/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/chl-file-item-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 13:03:00,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 13:03:00,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 13:03:00,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 13:03:00,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 13:03:00,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 13:03:00,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 13:03:00,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 13:03:00,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 13:03:00,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 13:03:00,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 13:03:00,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 13:03:00,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 13:03:00,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 13:03:00,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 13:03:00,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 13:03:00,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 13:03:00,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 13:03:00,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 13:03:00,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 13:03:00,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 13:03:00,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 13:03:00,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 13:03:00,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 13:03:00,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 13:03:00,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 13:03:00,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 13:03:00,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 13:03:00,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 13:03:00,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 13:03:00,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 13:03:00,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 13:03:00,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 13:03:00,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 13:03:00,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 13:03:00,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 13:03:00,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 13:03:00,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 13:03:00,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 13:03:00,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 13:03:00,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 13:03:00,333 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 13:03:00,364 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 13:03:00,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 13:03:00,366 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 13:03:00,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 13:03:00,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 13:03:00,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 13:03:00,366 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 13:03:00,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 13:03:00,367 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 13:03:00,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 13:03:00,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 13:03:00,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 13:03:00,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 13:03:00,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 13:03:00,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 13:03:00,368 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 13:03:00,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 13:03:00,368 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 13:03:00,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 13:03:00,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 13:03:00,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 13:03:00,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 13:03:00,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 13:03:00,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:03:00,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 13:03:00,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 13:03:00,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 13:03:00,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 13:03:00,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 13:03:00,370 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 13:03:00,370 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 13:03:00,370 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 13:03:00,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 13:03:00,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 13:03:00,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 13:03:00,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 13:03:00,623 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 13:03:00,627 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 13:03:00,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c [2022-01-19 13:03:00,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f4bec7d8/31c280e972fd40c6906b3167b41b6943/FLAG401975451 [2022-01-19 13:03:01,038 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 13:03:01,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c [2022-01-19 13:03:01,049 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f4bec7d8/31c280e972fd40c6906b3167b41b6943/FLAG401975451 [2022-01-19 13:03:01,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f4bec7d8/31c280e972fd40c6906b3167b41b6943 [2022-01-19 13:03:01,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 13:03:01,425 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 13:03:01,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 13:03:01,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 13:03:01,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 13:03:01,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:03:01" (1/1) ... [2022-01-19 13:03:01,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c54c95c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:03:01, skipping insertion in model container [2022-01-19 13:03:01,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:03:01" (1/1) ... [2022-01-19 13:03:01,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 13:03:01,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 13:03:01,609 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c[2495,2508] [2022-01-19 13:03:01,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:03:01,620 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 13:03:01,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c[2495,2508] [2022-01-19 13:03:01,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:03:01,659 INFO L208 MainTranslator]: Completed translation [2022-01-19 13:03:01,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:03:01 WrapperNode [2022-01-19 13:03:01,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 13:03:01,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 13:03:01,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 13:03:01,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 13:03:01,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:03:01" (1/1) ... [2022-01-19 13:03:01,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:03:01" (1/1) ... [2022-01-19 13:03:01,704 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 158 [2022-01-19 13:03:01,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 13:03:01,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 13:03:01,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 13:03:01,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 13:03:01,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:03:01" (1/1) ... [2022-01-19 13:03:01,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:03:01" (1/1) ... [2022-01-19 13:03:01,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:03:01" (1/1) ... [2022-01-19 13:03:01,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:03:01" (1/1) ... [2022-01-19 13:03:01,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:03:01" (1/1) ... [2022-01-19 13:03:01,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:03:01" (1/1) ... [2022-01-19 13:03:01,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:03:01" (1/1) ... [2022-01-19 13:03:01,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 13:03:01,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 13:03:01,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 13:03:01,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 13:03:01,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:03:01" (1/1) ... [2022-01-19 13:03:01,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:03:01,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:03:01,762 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 13:03:01,789 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 13:03:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 13:03:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 13:03:01,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 13:03:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 13:03:01,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 13:03:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 13:03:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 13:03:01,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 13:03:01,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 13:03:01,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 13:03:01,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 13:03:01,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 13:03:01,815 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 13:03:01,924 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 13:03:01,926 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 13:03:02,141 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 13:03:02,150 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 13:03:02,150 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 13:03:02,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:03:02 BoogieIcfgContainer [2022-01-19 13:03:02,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 13:03:02,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 13:03:02,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 13:03:02,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 13:03:02,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 01:03:01" (1/3) ... [2022-01-19 13:03:02,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1656e1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:03:02, skipping insertion in model container [2022-01-19 13:03:02,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:03:01" (2/3) ... [2022-01-19 13:03:02,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1656e1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:03:02, skipping insertion in model container [2022-01-19 13:03:02,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:03:02" (3/3) ... [2022-01-19 13:03:02,159 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-file-item-symm.wvr.c [2022-01-19 13:03:02,163 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 13:03:02,164 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 13:03:02,164 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 13:03:02,209 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,213 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,213 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,213 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,213 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,213 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,213 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,216 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,216 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,216 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,216 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,216 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,216 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,216 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,219 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,219 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,219 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,219 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,219 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,219 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,219 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,220 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,220 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,220 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,220 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,220 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,220 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,221 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,221 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,221 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,221 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,222 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,222 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,222 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,222 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,222 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,222 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,224 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,224 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,224 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,224 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,224 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,226 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,226 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,226 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,226 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,226 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,226 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,227 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,227 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,227 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,227 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,227 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,227 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,228 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,228 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,228 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,228 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,228 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,229 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,229 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,229 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,230 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,230 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,231 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,232 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,232 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,232 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,232 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,232 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,233 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,233 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,233 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,233 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,233 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,233 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,233 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,234 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,236 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,237 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,237 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,237 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,237 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,237 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,237 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,238 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,238 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,238 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,238 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,238 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,238 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,238 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,238 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,239 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,239 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,239 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,239 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,239 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,239 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,239 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,240 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,240 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,240 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,240 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,240 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,240 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,240 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,240 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,241 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,241 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,241 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,241 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,241 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,241 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,241 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,242 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,242 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,242 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,242 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,242 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,243 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,243 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,243 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,243 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,244 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,244 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,244 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,244 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,244 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,245 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,245 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,245 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,245 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,245 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,245 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,245 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,246 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,246 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,246 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,246 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,247 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,247 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,247 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,247 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,248 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,248 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,248 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,248 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,248 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,248 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,248 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,255 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,255 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,255 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,255 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,255 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,255 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,255 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,256 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,256 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,256 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,256 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,256 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,256 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,256 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,256 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,256 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,258 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,258 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,259 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,259 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,259 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,275 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,275 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,275 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:03:02,280 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 13:03:02,336 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 13:03:02,347 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 13:03:02,348 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 13:03:02,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 198 places, 210 transitions, 436 flow [2022-01-19 13:03:02,436 INFO L129 PetriNetUnfolder]: 19/208 cut-off events. [2022-01-19 13:03:02,436 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 13:03:02,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 208 events. 19/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 414 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2022-01-19 13:03:02,447 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 210 transitions, 436 flow [2022-01-19 13:03:02,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 199 transitions, 410 flow [2022-01-19 13:03:02,504 INFO L129 PetriNetUnfolder]: 19/198 cut-off events. [2022-01-19 13:03:02,504 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 13:03:02,505 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:02,505 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:02,506 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:02,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:02,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1054999512, now seen corresponding path program 1 times [2022-01-19 13:03:02,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:02,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243438081] [2022-01-19 13:03:02,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:02,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:03,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:03,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:03,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243438081] [2022-01-19 13:03:03,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243438081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:03,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:03,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:03,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919153614] [2022-01-19 13:03:03,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:03,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:03,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:03,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:03,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:03,068 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:03,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 199 transitions, 410 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:03,078 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:03,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:03,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:03,581 INFO L129 PetriNetUnfolder]: 113/576 cut-off events. [2022-01-19 13:03:03,582 INFO L130 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-01-19 13:03:03,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 576 events. 113/576 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2995 event pairs, 35 based on Foata normal form. 23/565 useless extension candidates. Maximal degree in co-relation 655. Up to 123 conditions per place. [2022-01-19 13:03:03,589 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 81 selfloop transitions, 5 changer transitions 44/287 dead transitions. [2022-01-19 13:03:03,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 287 transitions, 876 flow [2022-01-19 13:03:03,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-19 13:03:03,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-01-19 13:03:03,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4328 transitions. [2022-01-19 13:03:03,616 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8243809523809524 [2022-01-19 13:03:03,617 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4328 transitions. [2022-01-19 13:03:03,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4328 transitions. [2022-01-19 13:03:03,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:03,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4328 transitions. [2022-01-19 13:03:03,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 173.12) internal successors, (4328), 25 states have internal predecessors, (4328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:03,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 210.0) internal successors, (5460), 26 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:03,659 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 210.0) internal successors, (5460), 26 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:03,661 INFO L186 Difference]: Start difference. First operand has 187 places, 199 transitions, 410 flow. Second operand 25 states and 4328 transitions. [2022-01-19 13:03:03,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 287 transitions, 876 flow [2022-01-19 13:03:03,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 287 transitions, 848 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 13:03:03,671 INFO L242 Difference]: Finished difference. Result has 229 places, 193 transitions, 473 flow [2022-01-19 13:03:03,673 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=473, PETRI_PLACES=229, PETRI_TRANSITIONS=193} [2022-01-19 13:03:03,676 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 42 predicate places. [2022-01-19 13:03:03,676 INFO L470 AbstractCegarLoop]: Abstraction has has 229 places, 193 transitions, 473 flow [2022-01-19 13:03:03,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:03,678 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:03,678 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:03,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 13:03:03,678 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:03,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:03,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1250873480, now seen corresponding path program 1 times [2022-01-19 13:03:03,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:03,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664403300] [2022-01-19 13:03:03,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:03,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:03,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:03,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:03,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664403300] [2022-01-19 13:03:03,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664403300] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:03,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:03,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:03:03,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225192083] [2022-01-19 13:03:03,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:03,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:03:03,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:03,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:03:03,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:03:03,741 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 13:03:03,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 193 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:03,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:03,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 13:03:03,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:03,852 INFO L129 PetriNetUnfolder]: 67/631 cut-off events. [2022-01-19 13:03:03,853 INFO L130 PetriNetUnfolder]: For 623/632 co-relation queries the response was YES. [2022-01-19 13:03:03,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 631 events. 67/631 cut-off events. For 623/632 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3791 event pairs, 20 based on Foata normal form. 0/575 useless extension candidates. Maximal degree in co-relation 1026. Up to 32 conditions per place. [2022-01-19 13:03:03,860 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 15 selfloop transitions, 3 changer transitions 0/199 dead transitions. [2022-01-19 13:03:03,860 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 199 transitions, 524 flow [2022-01-19 13:03:03,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:03:03,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:03:03,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 13:03:03,862 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 13:03:03,862 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 13:03:03,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 13:03:03,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:03,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 13:03:03,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:03,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:03,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:03,866 INFO L186 Difference]: Start difference. First operand has 229 places, 193 transitions, 473 flow. Second operand 3 states and 591 transitions. [2022-01-19 13:03:03,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 199 transitions, 524 flow [2022-01-19 13:03:03,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 199 transitions, 505 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-01-19 13:03:03,875 INFO L242 Difference]: Finished difference. Result has 202 places, 196 transitions, 484 flow [2022-01-19 13:03:03,876 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=202, PETRI_TRANSITIONS=196} [2022-01-19 13:03:03,876 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 15 predicate places. [2022-01-19 13:03:03,877 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 196 transitions, 484 flow [2022-01-19 13:03:03,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:03,877 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:03,877 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:03,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 13:03:03,878 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:03,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:03,879 INFO L85 PathProgramCache]: Analyzing trace with hash 728210236, now seen corresponding path program 2 times [2022-01-19 13:03:03,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:03,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042573335] [2022-01-19 13:03:03,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:03,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:03,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:03,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042573335] [2022-01-19 13:03:03,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042573335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:03,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:03,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:03:03,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051994387] [2022-01-19 13:03:03,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:03,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:03:03,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:03,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:03:03,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:03:03,926 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 13:03:03,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 196 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:03,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:03,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 13:03:03,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:04,040 INFO L129 PetriNetUnfolder]: 53/565 cut-off events. [2022-01-19 13:03:04,040 INFO L130 PetriNetUnfolder]: For 363/386 co-relation queries the response was YES. [2022-01-19 13:03:04,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 892 conditions, 565 events. 53/565 cut-off events. For 363/386 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2971 event pairs, 24 based on Foata normal form. 8/533 useless extension candidates. Maximal degree in co-relation 798. Up to 23 conditions per place. [2022-01-19 13:03:04,045 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 16 selfloop transitions, 5 changer transitions 0/202 dead transitions. [2022-01-19 13:03:04,046 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 202 transitions, 547 flow [2022-01-19 13:03:04,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:03:04,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:03:04,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 13:03:04,048 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 13:03:04,048 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 13:03:04,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 13:03:04,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:04,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 13:03:04,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:04,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:04,052 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:04,052 INFO L186 Difference]: Start difference. First operand has 202 places, 196 transitions, 484 flow. Second operand 3 states and 591 transitions. [2022-01-19 13:03:04,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 202 transitions, 547 flow [2022-01-19 13:03:04,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 202 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 13:03:04,059 INFO L242 Difference]: Finished difference. Result has 205 places, 199 transitions, 525 flow [2022-01-19 13:03:04,059 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=525, PETRI_PLACES=205, PETRI_TRANSITIONS=199} [2022-01-19 13:03:04,061 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 18 predicate places. [2022-01-19 13:03:04,064 INFO L470 AbstractCegarLoop]: Abstraction has has 205 places, 199 transitions, 525 flow [2022-01-19 13:03:04,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:04,064 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:04,065 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:04,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 13:03:04,065 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:04,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:04,067 INFO L85 PathProgramCache]: Analyzing trace with hash 22916530, now seen corresponding path program 1 times [2022-01-19 13:03:04,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:04,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36188738] [2022-01-19 13:03:04,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:04,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:04,255 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 13:03:04,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:04,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36188738] [2022-01-19 13:03:04,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36188738] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:04,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:04,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:04,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885852069] [2022-01-19 13:03:04,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:04,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:04,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:04,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:04,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:04,259 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:04,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 199 transitions, 525 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:04,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:04,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:04,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:04,635 INFO L129 PetriNetUnfolder]: 190/1098 cut-off events. [2022-01-19 13:03:04,636 INFO L130 PetriNetUnfolder]: For 873/892 co-relation queries the response was YES. [2022-01-19 13:03:04,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 1098 events. 190/1098 cut-off events. For 873/892 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7984 event pairs, 101 based on Foata normal form. 6/1041 useless extension candidates. Maximal degree in co-relation 2021. Up to 271 conditions per place. [2022-01-19 13:03:04,646 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 80 selfloop transitions, 5 changer transitions 34/283 dead transitions. [2022-01-19 13:03:04,646 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 283 transitions, 1078 flow [2022-01-19 13:03:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 13:03:04,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 13:03:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4125 transitions. [2022-01-19 13:03:04,654 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8184523809523809 [2022-01-19 13:03:04,654 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4125 transitions. [2022-01-19 13:03:04,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4125 transitions. [2022-01-19 13:03:04,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:04,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4125 transitions. [2022-01-19 13:03:04,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.875) internal successors, (4125), 24 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:04,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:04,673 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:04,673 INFO L186 Difference]: Start difference. First operand has 205 places, 199 transitions, 525 flow. Second operand 24 states and 4125 transitions. [2022-01-19 13:03:04,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 283 transitions, 1078 flow [2022-01-19 13:03:04,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 283 transitions, 1062 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-01-19 13:03:04,683 INFO L242 Difference]: Finished difference. Result has 248 places, 203 transitions, 608 flow [2022-01-19 13:03:04,684 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=608, PETRI_PLACES=248, PETRI_TRANSITIONS=203} [2022-01-19 13:03:04,685 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 61 predicate places. [2022-01-19 13:03:04,685 INFO L470 AbstractCegarLoop]: Abstraction has has 248 places, 203 transitions, 608 flow [2022-01-19 13:03:04,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:04,686 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:04,686 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:04,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 13:03:04,686 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:04,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:04,687 INFO L85 PathProgramCache]: Analyzing trace with hash 356652588, now seen corresponding path program 2 times [2022-01-19 13:03:04,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:04,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204737679] [2022-01-19 13:03:04,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:04,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:04,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:04,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204737679] [2022-01-19 13:03:04,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204737679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:04,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:04,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:04,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628007333] [2022-01-19 13:03:04,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:04,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:04,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:04,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:04,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:04,829 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:04,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 203 transitions, 608 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:04,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:04,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:04,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:05,227 INFO L129 PetriNetUnfolder]: 197/1065 cut-off events. [2022-01-19 13:03:05,228 INFO L130 PetriNetUnfolder]: For 3326/3336 co-relation queries the response was YES. [2022-01-19 13:03:05,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3070 conditions, 1065 events. 197/1065 cut-off events. For 3326/3336 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7573 event pairs, 112 based on Foata normal form. 5/1005 useless extension candidates. Maximal degree in co-relation 2930. Up to 314 conditions per place. [2022-01-19 13:03:05,239 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 55 selfloop transitions, 12 changer transitions 25/256 dead transitions. [2022-01-19 13:03:05,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 256 transitions, 1253 flow [2022-01-19 13:03:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 13:03:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 13:03:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3430 transitions. [2022-01-19 13:03:05,247 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-01-19 13:03:05,247 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3430 transitions. [2022-01-19 13:03:05,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3430 transitions. [2022-01-19 13:03:05,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:05,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3430 transitions. [2022-01-19 13:03:05,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.5) internal successors, (3430), 20 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:05,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:05,264 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:05,264 INFO L186 Difference]: Start difference. First operand has 248 places, 203 transitions, 608 flow. Second operand 20 states and 3430 transitions. [2022-01-19 13:03:05,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 256 transitions, 1253 flow [2022-01-19 13:03:05,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 256 transitions, 1182 flow, removed 35 selfloop flow, removed 11 redundant places. [2022-01-19 13:03:05,280 INFO L242 Difference]: Finished difference. Result has 256 places, 213 transitions, 744 flow [2022-01-19 13:03:05,280 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=744, PETRI_PLACES=256, PETRI_TRANSITIONS=213} [2022-01-19 13:03:05,281 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 69 predicate places. [2022-01-19 13:03:05,281 INFO L470 AbstractCegarLoop]: Abstraction has has 256 places, 213 transitions, 744 flow [2022-01-19 13:03:05,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:05,282 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:05,283 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:05,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 13:03:05,283 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:05,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:05,284 INFO L85 PathProgramCache]: Analyzing trace with hash -33887738, now seen corresponding path program 1 times [2022-01-19 13:03:05,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:05,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889523055] [2022-01-19 13:03:05,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:05,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:05,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:05,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:05,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889523055] [2022-01-19 13:03:05,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889523055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:05,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:05,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:05,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214272835] [2022-01-19 13:03:05,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:05,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:05,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:05,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:05,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:05,399 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:05,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 213 transitions, 744 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:05,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:05,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:05,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:05,866 INFO L129 PetriNetUnfolder]: 293/1475 cut-off events. [2022-01-19 13:03:05,866 INFO L130 PetriNetUnfolder]: For 6248/6270 co-relation queries the response was YES. [2022-01-19 13:03:05,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4659 conditions, 1475 events. 293/1475 cut-off events. For 6248/6270 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11375 event pairs, 159 based on Foata normal form. 10/1401 useless extension candidates. Maximal degree in co-relation 4491. Up to 428 conditions per place. [2022-01-19 13:03:05,883 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 68 selfloop transitions, 13 changer transitions 36/287 dead transitions. [2022-01-19 13:03:05,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 287 transitions, 1685 flow [2022-01-19 13:03:05,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 13:03:05,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 13:03:05,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3612 transitions. [2022-01-19 13:03:05,892 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2022-01-19 13:03:05,892 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3612 transitions. [2022-01-19 13:03:05,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3612 transitions. [2022-01-19 13:03:05,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:05,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3612 transitions. [2022-01-19 13:03:05,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 172.0) internal successors, (3612), 21 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:05,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:05,915 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:05,915 INFO L186 Difference]: Start difference. First operand has 256 places, 213 transitions, 744 flow. Second operand 21 states and 3612 transitions. [2022-01-19 13:03:05,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 287 transitions, 1685 flow [2022-01-19 13:03:05,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 287 transitions, 1556 flow, removed 61 selfloop flow, removed 10 redundant places. [2022-01-19 13:03:05,943 INFO L242 Difference]: Finished difference. Result has 270 places, 226 transitions, 905 flow [2022-01-19 13:03:05,944 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=905, PETRI_PLACES=270, PETRI_TRANSITIONS=226} [2022-01-19 13:03:05,944 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 83 predicate places. [2022-01-19 13:03:05,944 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 226 transitions, 905 flow [2022-01-19 13:03:05,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:05,945 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:05,946 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:05,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 13:03:05,946 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:05,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:05,946 INFO L85 PathProgramCache]: Analyzing trace with hash 395916068, now seen corresponding path program 2 times [2022-01-19 13:03:05,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:05,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109374247] [2022-01-19 13:03:05,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:05,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:06,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:06,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:06,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109374247] [2022-01-19 13:03:06,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109374247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:06,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:06,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:06,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784609464] [2022-01-19 13:03:06,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:06,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:06,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:06,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:06,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:06,048 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:06,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 226 transitions, 905 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:06,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:06,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:06,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:06,501 INFO L129 PetriNetUnfolder]: 281/1413 cut-off events. [2022-01-19 13:03:06,502 INFO L130 PetriNetUnfolder]: For 8049/8079 co-relation queries the response was YES. [2022-01-19 13:03:06,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4996 conditions, 1413 events. 281/1413 cut-off events. For 8049/8079 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 10820 event pairs, 94 based on Foata normal form. 15/1364 useless extension candidates. Maximal degree in co-relation 4917. Up to 293 conditions per place. [2022-01-19 13:03:06,515 INFO L132 encePairwiseOnDemand]: 195/210 looper letters, 82 selfloop transitions, 25 changer transitions 50/327 dead transitions. [2022-01-19 13:03:06,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 327 transitions, 2063 flow [2022-01-19 13:03:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:03:06,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:03:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2794 transitions. [2022-01-19 13:03:06,521 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8315476190476191 [2022-01-19 13:03:06,521 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2794 transitions. [2022-01-19 13:03:06,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2794 transitions. [2022-01-19 13:03:06,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:06,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2794 transitions. [2022-01-19 13:03:06,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 174.625) internal successors, (2794), 16 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:06,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:06,531 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:06,532 INFO L186 Difference]: Start difference. First operand has 270 places, 226 transitions, 905 flow. Second operand 16 states and 2794 transitions. [2022-01-19 13:03:06,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 327 transitions, 2063 flow [2022-01-19 13:03:06,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 327 transitions, 1815 flow, removed 124 selfloop flow, removed 11 redundant places. [2022-01-19 13:03:06,561 INFO L242 Difference]: Finished difference. Result has 272 places, 236 transitions, 1049 flow [2022-01-19 13:03:06,561 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1049, PETRI_PLACES=272, PETRI_TRANSITIONS=236} [2022-01-19 13:03:06,562 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 85 predicate places. [2022-01-19 13:03:06,562 INFO L470 AbstractCegarLoop]: Abstraction has has 272 places, 236 transitions, 1049 flow [2022-01-19 13:03:06,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:06,563 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:06,563 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:06,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 13:03:06,563 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:06,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:06,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2081702646, now seen corresponding path program 1 times [2022-01-19 13:03:06,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:06,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971896296] [2022-01-19 13:03:06,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:06,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:06,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:06,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971896296] [2022-01-19 13:03:06,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971896296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:06,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:06,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:03:06,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839656607] [2022-01-19 13:03:06,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:06,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:03:06,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:06,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:03:06,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:03:06,594 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 13:03:06,595 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 236 transitions, 1049 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:06,595 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:06,595 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 13:03:06,595 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:06,779 INFO L129 PetriNetUnfolder]: 155/1472 cut-off events. [2022-01-19 13:03:06,780 INFO L130 PetriNetUnfolder]: For 5249/5285 co-relation queries the response was YES. [2022-01-19 13:03:06,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3840 conditions, 1472 events. 155/1472 cut-off events. For 5249/5285 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12102 event pairs, 74 based on Foata normal form. 19/1399 useless extension candidates. Maximal degree in co-relation 3761. Up to 78 conditions per place. [2022-01-19 13:03:06,796 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 13 selfloop transitions, 5 changer transitions 0/242 dead transitions. [2022-01-19 13:03:06,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 242 transitions, 1100 flow [2022-01-19 13:03:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:03:06,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:03:06,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 13:03:06,797 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 13:03:06,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 13:03:06,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 13:03:06,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:06,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 13:03:06,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:06,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:06,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:06,800 INFO L186 Difference]: Start difference. First operand has 272 places, 236 transitions, 1049 flow. Second operand 3 states and 591 transitions. [2022-01-19 13:03:06,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 242 transitions, 1100 flow [2022-01-19 13:03:06,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 242 transitions, 972 flow, removed 64 selfloop flow, removed 9 redundant places. [2022-01-19 13:03:06,825 INFO L242 Difference]: Finished difference. Result has 256 places, 239 transitions, 959 flow [2022-01-19 13:03:06,826 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=959, PETRI_PLACES=256, PETRI_TRANSITIONS=239} [2022-01-19 13:03:06,826 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 69 predicate places. [2022-01-19 13:03:06,826 INFO L470 AbstractCegarLoop]: Abstraction has has 256 places, 239 transitions, 959 flow [2022-01-19 13:03:06,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:06,827 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:06,827 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:06,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 13:03:06,827 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash -281237278, now seen corresponding path program 2 times [2022-01-19 13:03:06,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:06,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134153916] [2022-01-19 13:03:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:06,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:06,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:06,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134153916] [2022-01-19 13:03:06,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134153916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:06,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:06,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:03:06,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704494608] [2022-01-19 13:03:06,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:06,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:03:06,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:06,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:03:06,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:03:06,857 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 13:03:06,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 239 transitions, 959 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:06,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:06,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 13:03:06,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:06,979 INFO L129 PetriNetUnfolder]: 90/1008 cut-off events. [2022-01-19 13:03:06,979 INFO L130 PetriNetUnfolder]: For 2439/2461 co-relation queries the response was YES. [2022-01-19 13:03:06,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 1008 events. 90/1008 cut-off events. For 2439/2461 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7363 event pairs, 46 based on Foata normal form. 18/974 useless extension candidates. Maximal degree in co-relation 2113. Up to 52 conditions per place. [2022-01-19 13:03:06,989 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 17 selfloop transitions, 2 changer transitions 13/234 dead transitions. [2022-01-19 13:03:06,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 234 transitions, 950 flow [2022-01-19 13:03:06,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:03:06,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:03:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 13:03:06,990 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 13:03:06,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 13:03:06,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 13:03:06,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:06,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 13:03:06,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:06,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:06,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:06,993 INFO L186 Difference]: Start difference. First operand has 256 places, 239 transitions, 959 flow. Second operand 3 states and 591 transitions. [2022-01-19 13:03:06,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 234 transitions, 950 flow [2022-01-19 13:03:07,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 234 transitions, 922 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-01-19 13:03:07,010 INFO L242 Difference]: Finished difference. Result has 252 places, 218 transitions, 804 flow [2022-01-19 13:03:07,010 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=804, PETRI_PLACES=252, PETRI_TRANSITIONS=218} [2022-01-19 13:03:07,011 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 65 predicate places. [2022-01-19 13:03:07,011 INFO L470 AbstractCegarLoop]: Abstraction has has 252 places, 218 transitions, 804 flow [2022-01-19 13:03:07,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:07,011 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:07,012 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:07,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 13:03:07,012 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:07,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:07,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1395240836, now seen corresponding path program 2 times [2022-01-19 13:03:07,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:07,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921893320] [2022-01-19 13:03:07,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:07,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:07,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:07,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921893320] [2022-01-19 13:03:07,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921893320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:07,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:07,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:07,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030050257] [2022-01-19 13:03:07,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:07,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:07,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:07,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:07,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:07,130 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:07,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 218 transitions, 804 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:07,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:07,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:07,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:07,602 INFO L129 PetriNetUnfolder]: 155/1045 cut-off events. [2022-01-19 13:03:07,602 INFO L130 PetriNetUnfolder]: For 3335/3362 co-relation queries the response was YES. [2022-01-19 13:03:07,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2985 conditions, 1045 events. 155/1045 cut-off events. For 3335/3362 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7490 event pairs, 69 based on Foata normal form. 10/1008 useless extension candidates. Maximal degree in co-relation 2264. Up to 246 conditions per place. [2022-01-19 13:03:07,613 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 81 selfloop transitions, 6 changer transitions 41/300 dead transitions. [2022-01-19 13:03:07,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 300 transitions, 1524 flow [2022-01-19 13:03:07,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 13:03:07,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 13:03:07,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4122 transitions. [2022-01-19 13:03:07,618 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8178571428571428 [2022-01-19 13:03:07,618 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4122 transitions. [2022-01-19 13:03:07,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4122 transitions. [2022-01-19 13:03:07,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:07,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4122 transitions. [2022-01-19 13:03:07,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.75) internal successors, (4122), 24 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:07,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:07,632 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:07,632 INFO L186 Difference]: Start difference. First operand has 252 places, 218 transitions, 804 flow. Second operand 24 states and 4122 transitions. [2022-01-19 13:03:07,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 300 transitions, 1524 flow [2022-01-19 13:03:07,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 300 transitions, 1478 flow, removed 22 selfloop flow, removed 6 redundant places. [2022-01-19 13:03:07,650 INFO L242 Difference]: Finished difference. Result has 284 places, 222 transitions, 898 flow [2022-01-19 13:03:07,650 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=898, PETRI_PLACES=284, PETRI_TRANSITIONS=222} [2022-01-19 13:03:07,651 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 97 predicate places. [2022-01-19 13:03:07,651 INFO L470 AbstractCegarLoop]: Abstraction has has 284 places, 222 transitions, 898 flow [2022-01-19 13:03:07,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:07,651 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:07,652 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:07,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 13:03:07,652 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:07,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:07,652 INFO L85 PathProgramCache]: Analyzing trace with hash 386763716, now seen corresponding path program 3 times [2022-01-19 13:03:07,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:07,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377422554] [2022-01-19 13:03:07,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:07,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:07,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:07,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:07,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377422554] [2022-01-19 13:03:07,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377422554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:07,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:07,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:07,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400857988] [2022-01-19 13:03:07,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:07,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:07,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:07,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:07,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:07,775 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:07,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 222 transitions, 898 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:07,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:07,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:07,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:08,103 INFO L129 PetriNetUnfolder]: 160/1084 cut-off events. [2022-01-19 13:03:08,104 INFO L130 PetriNetUnfolder]: For 4946/4970 co-relation queries the response was YES. [2022-01-19 13:03:08,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3443 conditions, 1084 events. 160/1084 cut-off events. For 4946/4970 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7871 event pairs, 73 based on Foata normal form. 10/1039 useless extension candidates. Maximal degree in co-relation 3336. Up to 285 conditions per place. [2022-01-19 13:03:08,116 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 64 selfloop transitions, 16 changer transitions 25/277 dead transitions. [2022-01-19 13:03:08,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 277 transitions, 1685 flow [2022-01-19 13:03:08,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:03:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:03:08,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3091 transitions. [2022-01-19 13:03:08,120 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8177248677248677 [2022-01-19 13:03:08,120 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3091 transitions. [2022-01-19 13:03:08,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3091 transitions. [2022-01-19 13:03:08,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:08,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3091 transitions. [2022-01-19 13:03:08,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.72222222222223) internal successors, (3091), 18 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:08,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:08,130 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:08,130 INFO L186 Difference]: Start difference. First operand has 284 places, 222 transitions, 898 flow. Second operand 18 states and 3091 transitions. [2022-01-19 13:03:08,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 277 transitions, 1685 flow [2022-01-19 13:03:08,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 277 transitions, 1398 flow, removed 142 selfloop flow, removed 14 redundant places. [2022-01-19 13:03:08,155 INFO L242 Difference]: Finished difference. Result has 280 places, 236 transitions, 1023 flow [2022-01-19 13:03:08,155 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1023, PETRI_PLACES=280, PETRI_TRANSITIONS=236} [2022-01-19 13:03:08,156 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 93 predicate places. [2022-01-19 13:03:08,156 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 236 transitions, 1023 flow [2022-01-19 13:03:08,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:08,156 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:08,156 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:08,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 13:03:08,157 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:08,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:08,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1471582416, now seen corresponding path program 4 times [2022-01-19 13:03:08,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:08,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537631348] [2022-01-19 13:03:08,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:08,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:08,290 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 13:03:08,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:08,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537631348] [2022-01-19 13:03:08,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537631348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:08,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:08,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:08,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383814943] [2022-01-19 13:03:08,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:08,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:08,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:08,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:08,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:08,295 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:08,296 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 236 transitions, 1023 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:08,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:08,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:08,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:08,664 INFO L129 PetriNetUnfolder]: 166/1064 cut-off events. [2022-01-19 13:03:08,664 INFO L130 PetriNetUnfolder]: For 3669/3692 co-relation queries the response was YES. [2022-01-19 13:03:08,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3282 conditions, 1064 events. 166/1064 cut-off events. For 3669/3692 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7626 event pairs, 73 based on Foata normal form. 9/1015 useless extension candidates. Maximal degree in co-relation 3177. Up to 276 conditions per place. [2022-01-19 13:03:08,674 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 66 selfloop transitions, 23 changer transitions 26/287 dead transitions. [2022-01-19 13:03:08,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 287 transitions, 1668 flow [2022-01-19 13:03:08,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:03:08,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:03:08,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2756 transitions. [2022-01-19 13:03:08,677 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8202380952380952 [2022-01-19 13:03:08,677 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2756 transitions. [2022-01-19 13:03:08,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2756 transitions. [2022-01-19 13:03:08,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:08,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2756 transitions. [2022-01-19 13:03:08,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 172.25) internal successors, (2756), 16 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:08,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:08,687 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:08,687 INFO L186 Difference]: Start difference. First operand has 280 places, 236 transitions, 1023 flow. Second operand 16 states and 2756 transitions. [2022-01-19 13:03:08,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 287 transitions, 1668 flow [2022-01-19 13:03:08,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 287 transitions, 1596 flow, removed 32 selfloop flow, removed 14 redundant places. [2022-01-19 13:03:08,710 INFO L242 Difference]: Finished difference. Result has 283 places, 246 transitions, 1163 flow [2022-01-19 13:03:08,710 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1163, PETRI_PLACES=283, PETRI_TRANSITIONS=246} [2022-01-19 13:03:08,712 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 96 predicate places. [2022-01-19 13:03:08,712 INFO L470 AbstractCegarLoop]: Abstraction has has 283 places, 246 transitions, 1163 flow [2022-01-19 13:03:08,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:08,712 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:08,712 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:08,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 13:03:08,713 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:08,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:08,713 INFO L85 PathProgramCache]: Analyzing trace with hash -2116593152, now seen corresponding path program 5 times [2022-01-19 13:03:08,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:08,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102621216] [2022-01-19 13:03:08,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:08,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:08,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:08,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102621216] [2022-01-19 13:03:08,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102621216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:08,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:08,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:08,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462892305] [2022-01-19 13:03:08,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:08,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:08,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:08,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:08,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:08,838 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:08,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 246 transitions, 1163 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:08,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:08,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:08,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:09,221 INFO L129 PetriNetUnfolder]: 181/1158 cut-off events. [2022-01-19 13:03:09,221 INFO L130 PetriNetUnfolder]: For 3961/3984 co-relation queries the response was YES. [2022-01-19 13:03:09,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3648 conditions, 1158 events. 181/1158 cut-off events. For 3961/3984 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8538 event pairs, 82 based on Foata normal form. 10/1111 useless extension candidates. Maximal degree in co-relation 3545. Up to 297 conditions per place. [2022-01-19 13:03:09,237 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 82 selfloop transitions, 23 changer transitions 29/306 dead transitions. [2022-01-19 13:03:09,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 306 transitions, 2081 flow [2022-01-19 13:03:09,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 13:03:09,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 13:03:09,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3431 transitions. [2022-01-19 13:03:09,244 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8169047619047619 [2022-01-19 13:03:09,244 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3431 transitions. [2022-01-19 13:03:09,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3431 transitions. [2022-01-19 13:03:09,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:09,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3431 transitions. [2022-01-19 13:03:09,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.55) internal successors, (3431), 20 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:09,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:09,257 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:09,257 INFO L186 Difference]: Start difference. First operand has 283 places, 246 transitions, 1163 flow. Second operand 20 states and 3431 transitions. [2022-01-19 13:03:09,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 306 transitions, 2081 flow [2022-01-19 13:03:09,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 306 transitions, 1961 flow, removed 37 selfloop flow, removed 8 redundant places. [2022-01-19 13:03:09,282 INFO L242 Difference]: Finished difference. Result has 304 places, 258 transitions, 1368 flow [2022-01-19 13:03:09,283 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1368, PETRI_PLACES=304, PETRI_TRANSITIONS=258} [2022-01-19 13:03:09,284 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 117 predicate places. [2022-01-19 13:03:09,284 INFO L470 AbstractCegarLoop]: Abstraction has has 304 places, 258 transitions, 1368 flow [2022-01-19 13:03:09,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:09,285 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:09,285 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:09,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 13:03:09,285 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:09,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:09,285 INFO L85 PathProgramCache]: Analyzing trace with hash -105746794, now seen corresponding path program 6 times [2022-01-19 13:03:09,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:09,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961247264] [2022-01-19 13:03:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:09,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:09,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:09,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:09,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961247264] [2022-01-19 13:03:09,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961247264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:09,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:09,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:09,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328791156] [2022-01-19 13:03:09,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:09,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:09,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:09,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:09,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:09,405 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:09,407 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 258 transitions, 1368 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:09,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:09,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:09,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:09,852 INFO L129 PetriNetUnfolder]: 184/1172 cut-off events. [2022-01-19 13:03:09,853 INFO L130 PetriNetUnfolder]: For 4910/4938 co-relation queries the response was YES. [2022-01-19 13:03:09,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3935 conditions, 1172 events. 184/1172 cut-off events. For 4910/4938 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8770 event pairs, 81 based on Foata normal form. 9/1124 useless extension candidates. Maximal degree in co-relation 3821. Up to 285 conditions per place. [2022-01-19 13:03:09,865 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 90 selfloop transitions, 22 changer transitions 33/317 dead transitions. [2022-01-19 13:03:09,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 317 transitions, 2379 flow [2022-01-19 13:03:09,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 13:03:09,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 13:03:09,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3436 transitions. [2022-01-19 13:03:09,871 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8180952380952381 [2022-01-19 13:03:09,871 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3436 transitions. [2022-01-19 13:03:09,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3436 transitions. [2022-01-19 13:03:09,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:09,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3436 transitions. [2022-01-19 13:03:09,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.8) internal successors, (3436), 20 states have internal predecessors, (3436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:09,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:09,884 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:09,884 INFO L186 Difference]: Start difference. First operand has 304 places, 258 transitions, 1368 flow. Second operand 20 states and 3436 transitions. [2022-01-19 13:03:09,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 317 transitions, 2379 flow [2022-01-19 13:03:09,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 317 transitions, 2267 flow, removed 48 selfloop flow, removed 9 redundant places. [2022-01-19 13:03:09,914 INFO L242 Difference]: Finished difference. Result has 319 places, 269 transitions, 1602 flow [2022-01-19 13:03:09,915 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1602, PETRI_PLACES=319, PETRI_TRANSITIONS=269} [2022-01-19 13:03:09,916 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 132 predicate places. [2022-01-19 13:03:09,916 INFO L470 AbstractCegarLoop]: Abstraction has has 319 places, 269 transitions, 1602 flow [2022-01-19 13:03:09,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:09,916 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:09,917 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:09,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 13:03:09,917 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:09,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:09,917 INFO L85 PathProgramCache]: Analyzing trace with hash 889201550, now seen corresponding path program 7 times [2022-01-19 13:03:09,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:09,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047622607] [2022-01-19 13:03:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:09,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:10,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:10,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047622607] [2022-01-19 13:03:10,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047622607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:10,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:10,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:10,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735992504] [2022-01-19 13:03:10,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:10,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:10,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:10,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:10,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:10,065 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:10,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 269 transitions, 1602 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:10,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:10,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:10,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:10,544 INFO L129 PetriNetUnfolder]: 185/1224 cut-off events. [2022-01-19 13:03:10,545 INFO L130 PetriNetUnfolder]: For 5689/5720 co-relation queries the response was YES. [2022-01-19 13:03:10,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4158 conditions, 1224 events. 185/1224 cut-off events. For 5689/5720 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9376 event pairs, 80 based on Foata normal form. 14/1182 useless extension candidates. Maximal degree in co-relation 4035. Up to 306 conditions per place. [2022-01-19 13:03:10,561 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 86 selfloop transitions, 28 changer transitions 35/321 dead transitions. [2022-01-19 13:03:10,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 321 transitions, 2491 flow [2022-01-19 13:03:10,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 13:03:10,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 13:03:10,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3767 transitions. [2022-01-19 13:03:10,566 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8153679653679654 [2022-01-19 13:03:10,566 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3767 transitions. [2022-01-19 13:03:10,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3767 transitions. [2022-01-19 13:03:10,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:10,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3767 transitions. [2022-01-19 13:03:10,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.22727272727272) internal successors, (3767), 22 states have internal predecessors, (3767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:10,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:10,579 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:10,579 INFO L186 Difference]: Start difference. First operand has 319 places, 269 transitions, 1602 flow. Second operand 22 states and 3767 transitions. [2022-01-19 13:03:10,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 321 transitions, 2491 flow [2022-01-19 13:03:10,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 321 transitions, 2353 flow, removed 60 selfloop flow, removed 12 redundant places. [2022-01-19 13:03:10,617 INFO L242 Difference]: Finished difference. Result has 331 places, 273 transitions, 1677 flow [2022-01-19 13:03:10,618 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1677, PETRI_PLACES=331, PETRI_TRANSITIONS=273} [2022-01-19 13:03:10,618 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 144 predicate places. [2022-01-19 13:03:10,619 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 273 transitions, 1677 flow [2022-01-19 13:03:10,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:10,619 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:10,619 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:10,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 13:03:10,620 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:10,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1277585082, now seen corresponding path program 8 times [2022-01-19 13:03:10,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:10,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263407521] [2022-01-19 13:03:10,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:10,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:10,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:10,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263407521] [2022-01-19 13:03:10,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263407521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:10,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:10,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:10,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667905580] [2022-01-19 13:03:10,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:10,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:10,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:10,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:10,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:10,723 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:10,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 273 transitions, 1677 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:10,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:10,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:10,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:11,138 INFO L129 PetriNetUnfolder]: 180/1222 cut-off events. [2022-01-19 13:03:11,138 INFO L130 PetriNetUnfolder]: For 5544/5575 co-relation queries the response was YES. [2022-01-19 13:03:11,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4119 conditions, 1222 events. 180/1222 cut-off events. For 5544/5575 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 9402 event pairs, 79 based on Foata normal form. 12/1181 useless extension candidates. Maximal degree in co-relation 3992. Up to 298 conditions per place. [2022-01-19 13:03:11,154 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 92 selfloop transitions, 25 changer transitions 36/325 dead transitions. [2022-01-19 13:03:11,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 325 transitions, 2655 flow [2022-01-19 13:03:11,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 13:03:11,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 13:03:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3605 transitions. [2022-01-19 13:03:11,159 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8174603174603174 [2022-01-19 13:03:11,159 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3605 transitions. [2022-01-19 13:03:11,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3605 transitions. [2022-01-19 13:03:11,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:11,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3605 transitions. [2022-01-19 13:03:11,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.66666666666666) internal successors, (3605), 21 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:11,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:11,170 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:11,170 INFO L186 Difference]: Start difference. First operand has 331 places, 273 transitions, 1677 flow. Second operand 21 states and 3605 transitions. [2022-01-19 13:03:11,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 325 transitions, 2655 flow [2022-01-19 13:03:11,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 325 transitions, 2495 flow, removed 62 selfloop flow, removed 14 redundant places. [2022-01-19 13:03:11,212 INFO L242 Difference]: Finished difference. Result has 339 places, 278 transitions, 1799 flow [2022-01-19 13:03:11,213 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1799, PETRI_PLACES=339, PETRI_TRANSITIONS=278} [2022-01-19 13:03:11,213 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 152 predicate places. [2022-01-19 13:03:11,213 INFO L470 AbstractCegarLoop]: Abstraction has has 339 places, 278 transitions, 1799 flow [2022-01-19 13:03:11,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:11,214 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:11,214 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:11,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 13:03:11,214 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:11,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:11,215 INFO L85 PathProgramCache]: Analyzing trace with hash 588377888, now seen corresponding path program 9 times [2022-01-19 13:03:11,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:11,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090326577] [2022-01-19 13:03:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:11,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:11,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:11,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090326577] [2022-01-19 13:03:11,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090326577] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:11,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:11,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:11,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565985103] [2022-01-19 13:03:11,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:11,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:11,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:11,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:11,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:11,304 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:11,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 278 transitions, 1799 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:11,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:11,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:11,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:11,647 INFO L129 PetriNetUnfolder]: 162/1131 cut-off events. [2022-01-19 13:03:11,647 INFO L130 PetriNetUnfolder]: For 4992/5018 co-relation queries the response was YES. [2022-01-19 13:03:11,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3730 conditions, 1131 events. 162/1131 cut-off events. For 4992/5018 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8442 event pairs, 76 based on Foata normal form. 13/1089 useless extension candidates. Maximal degree in co-relation 3599. Up to 296 conditions per place. [2022-01-19 13:03:11,659 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 81 selfloop transitions, 18 changer transitions 31/302 dead transitions. [2022-01-19 13:03:11,659 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 302 transitions, 2300 flow [2022-01-19 13:03:11,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:03:11,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:03:11,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2745 transitions. [2022-01-19 13:03:11,663 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8169642857142857 [2022-01-19 13:03:11,663 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2745 transitions. [2022-01-19 13:03:11,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2745 transitions. [2022-01-19 13:03:11,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:11,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2745 transitions. [2022-01-19 13:03:11,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.5625) internal successors, (2745), 16 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:11,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:11,673 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:11,673 INFO L186 Difference]: Start difference. First operand has 339 places, 278 transitions, 1799 flow. Second operand 16 states and 2745 transitions. [2022-01-19 13:03:11,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 302 transitions, 2300 flow [2022-01-19 13:03:11,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 302 transitions, 2146 flow, removed 52 selfloop flow, removed 18 redundant places. [2022-01-19 13:03:11,709 INFO L242 Difference]: Finished difference. Result has 328 places, 262 transitions, 1486 flow [2022-01-19 13:03:11,710 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1486, PETRI_PLACES=328, PETRI_TRANSITIONS=262} [2022-01-19 13:03:11,710 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 141 predicate places. [2022-01-19 13:03:11,710 INFO L470 AbstractCegarLoop]: Abstraction has has 328 places, 262 transitions, 1486 flow [2022-01-19 13:03:11,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:11,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:11,711 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:11,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 13:03:11,711 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:11,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:11,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1044741156, now seen corresponding path program 10 times [2022-01-19 13:03:11,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:11,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256718614] [2022-01-19 13:03:11,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:11,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:11,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:11,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:11,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256718614] [2022-01-19 13:03:11,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256718614] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:11,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:11,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:11,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866183167] [2022-01-19 13:03:11,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:11,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:11,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:11,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:11,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:11,817 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:11,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 262 transitions, 1486 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:11,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:11,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:11,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:12,179 INFO L129 PetriNetUnfolder]: 166/1162 cut-off events. [2022-01-19 13:03:12,180 INFO L130 PetriNetUnfolder]: For 4414/4438 co-relation queries the response was YES. [2022-01-19 13:03:12,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3747 conditions, 1162 events. 166/1162 cut-off events. For 4414/4438 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8740 event pairs, 80 based on Foata normal form. 9/1117 useless extension candidates. Maximal degree in co-relation 3672. Up to 298 conditions per place. [2022-01-19 13:03:12,193 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 81 selfloop transitions, 25 changer transitions 28/306 dead transitions. [2022-01-19 13:03:12,193 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 306 transitions, 2268 flow [2022-01-19 13:03:12,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:03:12,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:03:12,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2925 transitions. [2022-01-19 13:03:12,197 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.819327731092437 [2022-01-19 13:03:12,198 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2925 transitions. [2022-01-19 13:03:12,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2925 transitions. [2022-01-19 13:03:12,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:12,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2925 transitions. [2022-01-19 13:03:12,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 172.05882352941177) internal successors, (2925), 17 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:12,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:12,207 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:12,207 INFO L186 Difference]: Start difference. First operand has 328 places, 262 transitions, 1486 flow. Second operand 17 states and 2925 transitions. [2022-01-19 13:03:12,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 306 transitions, 2268 flow [2022-01-19 13:03:12,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 306 transitions, 2147 flow, removed 17 selfloop flow, removed 12 redundant places. [2022-01-19 13:03:12,239 INFO L242 Difference]: Finished difference. Result has 321 places, 270 transitions, 1610 flow [2022-01-19 13:03:12,239 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1610, PETRI_PLACES=321, PETRI_TRANSITIONS=270} [2022-01-19 13:03:12,239 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 134 predicate places. [2022-01-19 13:03:12,240 INFO L470 AbstractCegarLoop]: Abstraction has has 321 places, 270 transitions, 1610 flow [2022-01-19 13:03:12,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:12,240 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:12,240 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:12,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 13:03:12,240 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:12,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:12,241 INFO L85 PathProgramCache]: Analyzing trace with hash 811606530, now seen corresponding path program 11 times [2022-01-19 13:03:12,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:12,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362509817] [2022-01-19 13:03:12,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:12,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:12,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:12,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362509817] [2022-01-19 13:03:12,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362509817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:12,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:12,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:12,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071268823] [2022-01-19 13:03:12,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:12,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:12,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:12,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:12,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:12,345 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:12,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 270 transitions, 1610 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:12,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:12,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:12,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:12,712 INFO L129 PetriNetUnfolder]: 165/1151 cut-off events. [2022-01-19 13:03:12,712 INFO L130 PetriNetUnfolder]: For 4451/4480 co-relation queries the response was YES. [2022-01-19 13:03:12,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3757 conditions, 1151 events. 165/1151 cut-off events. For 4451/4480 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8647 event pairs, 80 based on Foata normal form. 11/1106 useless extension candidates. Maximal degree in co-relation 3680. Up to 300 conditions per place. [2022-01-19 13:03:12,725 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 82 selfloop transitions, 27 changer transitions 28/309 dead transitions. [2022-01-19 13:03:12,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 309 transitions, 2388 flow [2022-01-19 13:03:12,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:03:12,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:03:12,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2923 transitions. [2022-01-19 13:03:12,729 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8187675070028011 [2022-01-19 13:03:12,729 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2923 transitions. [2022-01-19 13:03:12,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2923 transitions. [2022-01-19 13:03:12,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:12,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2923 transitions. [2022-01-19 13:03:12,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.94117647058823) internal successors, (2923), 17 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:12,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:12,738 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:12,738 INFO L186 Difference]: Start difference. First operand has 321 places, 270 transitions, 1610 flow. Second operand 17 states and 2923 transitions. [2022-01-19 13:03:12,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 309 transitions, 2388 flow [2022-01-19 13:03:12,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 309 transitions, 2286 flow, removed 25 selfloop flow, removed 9 redundant places. [2022-01-19 13:03:12,793 INFO L242 Difference]: Finished difference. Result has 329 places, 277 transitions, 1767 flow [2022-01-19 13:03:12,794 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1767, PETRI_PLACES=329, PETRI_TRANSITIONS=277} [2022-01-19 13:03:12,794 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 142 predicate places. [2022-01-19 13:03:12,794 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 277 transitions, 1767 flow [2022-01-19 13:03:12,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:12,795 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:12,795 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:12,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 13:03:12,795 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:12,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:12,795 INFO L85 PathProgramCache]: Analyzing trace with hash -247791936, now seen corresponding path program 12 times [2022-01-19 13:03:12,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:12,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197451729] [2022-01-19 13:03:12,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:12,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:12,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:12,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197451729] [2022-01-19 13:03:12,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197451729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:12,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:12,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:12,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356864198] [2022-01-19 13:03:12,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:12,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:12,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:12,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:12,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:12,915 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:12,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 277 transitions, 1767 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:12,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:12,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:12,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:13,301 INFO L129 PetriNetUnfolder]: 156/1130 cut-off events. [2022-01-19 13:03:13,301 INFO L130 PetriNetUnfolder]: For 4076/4105 co-relation queries the response was YES. [2022-01-19 13:03:13,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 1130 events. 156/1130 cut-off events. For 4076/4105 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8444 event pairs, 78 based on Foata normal form. 11/1088 useless extension candidates. Maximal degree in co-relation 3505. Up to 292 conditions per place. [2022-01-19 13:03:13,317 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 79 selfloop transitions, 16 changer transitions 34/301 dead transitions. [2022-01-19 13:03:13,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 301 transitions, 2223 flow [2022-01-19 13:03:13,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:03:13,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:03:13,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3088 transitions. [2022-01-19 13:03:13,321 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.816931216931217 [2022-01-19 13:03:13,321 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3088 transitions. [2022-01-19 13:03:13,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3088 transitions. [2022-01-19 13:03:13,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:13,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3088 transitions. [2022-01-19 13:03:13,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.55555555555554) internal successors, (3088), 18 states have internal predecessors, (3088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:13,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:13,331 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:13,331 INFO L186 Difference]: Start difference. First operand has 329 places, 277 transitions, 1767 flow. Second operand 18 states and 3088 transitions. [2022-01-19 13:03:13,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 301 transitions, 2223 flow [2022-01-19 13:03:13,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 301 transitions, 2131 flow, removed 29 selfloop flow, removed 8 redundant places. [2022-01-19 13:03:13,367 INFO L242 Difference]: Finished difference. Result has 335 places, 263 transitions, 1501 flow [2022-01-19 13:03:13,368 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1501, PETRI_PLACES=335, PETRI_TRANSITIONS=263} [2022-01-19 13:03:13,368 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 148 predicate places. [2022-01-19 13:03:13,368 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 263 transitions, 1501 flow [2022-01-19 13:03:13,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:13,369 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:13,369 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:13,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 13:03:13,369 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:13,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:13,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1057827110, now seen corresponding path program 13 times [2022-01-19 13:03:13,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:13,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070940200] [2022-01-19 13:03:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:13,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:13,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:13,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:13,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070940200] [2022-01-19 13:03:13,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070940200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:13,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:13,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:13,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751333830] [2022-01-19 13:03:13,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:13,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:13,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:13,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:13,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:13,509 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:13,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 263 transitions, 1501 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:13,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:13,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:13,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:13,829 INFO L129 PetriNetUnfolder]: 143/1038 cut-off events. [2022-01-19 13:03:13,830 INFO L130 PetriNetUnfolder]: For 3529/3553 co-relation queries the response was YES. [2022-01-19 13:03:13,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3209 conditions, 1038 events. 143/1038 cut-off events. For 3529/3553 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7469 event pairs, 75 based on Foata normal form. 9/996 useless extension candidates. Maximal degree in co-relation 3130. Up to 281 conditions per place. [2022-01-19 13:03:13,841 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 69 selfloop transitions, 5 changer transitions 33/279 dead transitions. [2022-01-19 13:03:13,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 279 transitions, 1835 flow [2022-01-19 13:03:13,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:03:13,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:03:13,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3077 transitions. [2022-01-19 13:03:13,845 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.814021164021164 [2022-01-19 13:03:13,845 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3077 transitions. [2022-01-19 13:03:13,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3077 transitions. [2022-01-19 13:03:13,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:13,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3077 transitions. [2022-01-19 13:03:13,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.94444444444446) internal successors, (3077), 18 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:13,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:13,853 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:13,853 INFO L186 Difference]: Start difference. First operand has 335 places, 263 transitions, 1501 flow. Second operand 18 states and 3077 transitions. [2022-01-19 13:03:13,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 279 transitions, 1835 flow [2022-01-19 13:03:13,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 279 transitions, 1735 flow, removed 19 selfloop flow, removed 17 redundant places. [2022-01-19 13:03:13,882 INFO L242 Difference]: Finished difference. Result has 323 places, 243 transitions, 1166 flow [2022-01-19 13:03:13,882 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1166, PETRI_PLACES=323, PETRI_TRANSITIONS=243} [2022-01-19 13:03:13,882 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 136 predicate places. [2022-01-19 13:03:13,883 INFO L470 AbstractCegarLoop]: Abstraction has has 323 places, 243 transitions, 1166 flow [2022-01-19 13:03:13,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:13,883 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:13,883 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:13,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 13:03:13,883 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:13,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:13,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1617177460, now seen corresponding path program 14 times [2022-01-19 13:03:13,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:13,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550268358] [2022-01-19 13:03:13,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:13,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:13,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:13,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550268358] [2022-01-19 13:03:13,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550268358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:13,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:13,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:13,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767043374] [2022-01-19 13:03:13,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:13,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:13,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:13,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:13,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:13,985 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:13,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 243 transitions, 1166 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:13,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:13,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:13,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:14,390 INFO L129 PetriNetUnfolder]: 146/1060 cut-off events. [2022-01-19 13:03:14,391 INFO L130 PetriNetUnfolder]: For 3335/3357 co-relation queries the response was YES. [2022-01-19 13:03:14,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3208 conditions, 1060 events. 146/1060 cut-off events. For 3335/3357 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7772 event pairs, 71 based on Foata normal form. 9/1017 useless extension candidates. Maximal degree in co-relation 3134. Up to 259 conditions per place. [2022-01-19 13:03:14,400 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 63 selfloop transitions, 23 changer transitions 34/292 dead transitions. [2022-01-19 13:03:14,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 292 transitions, 1942 flow [2022-01-19 13:03:14,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 13:03:14,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 13:03:14,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3765 transitions. [2022-01-19 13:03:14,405 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.814935064935065 [2022-01-19 13:03:14,405 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3765 transitions. [2022-01-19 13:03:14,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3765 transitions. [2022-01-19 13:03:14,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:14,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3765 transitions. [2022-01-19 13:03:14,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.13636363636363) internal successors, (3765), 22 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:14,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:14,413 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:14,414 INFO L186 Difference]: Start difference. First operand has 323 places, 243 transitions, 1166 flow. Second operand 22 states and 3765 transitions. [2022-01-19 13:03:14,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 292 transitions, 1942 flow [2022-01-19 13:03:14,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 292 transitions, 1796 flow, removed 34 selfloop flow, removed 21 redundant places. [2022-01-19 13:03:14,437 INFO L242 Difference]: Finished difference. Result has 309 places, 248 transitions, 1240 flow [2022-01-19 13:03:14,437 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1240, PETRI_PLACES=309, PETRI_TRANSITIONS=248} [2022-01-19 13:03:14,437 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 122 predicate places. [2022-01-19 13:03:14,438 INFO L470 AbstractCegarLoop]: Abstraction has has 309 places, 248 transitions, 1240 flow [2022-01-19 13:03:14,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:14,438 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:14,438 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:14,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 13:03:14,438 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:14,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:14,439 INFO L85 PathProgramCache]: Analyzing trace with hash 428836932, now seen corresponding path program 15 times [2022-01-19 13:03:14,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:14,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42846931] [2022-01-19 13:03:14,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:14,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:14,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:14,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42846931] [2022-01-19 13:03:14,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42846931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:14,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:14,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:14,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150792929] [2022-01-19 13:03:14,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:14,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:14,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:14,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:14,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:14,536 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:14,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 248 transitions, 1240 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:14,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:14,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:14,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:14,883 INFO L129 PetriNetUnfolder]: 148/1086 cut-off events. [2022-01-19 13:03:14,883 INFO L130 PetriNetUnfolder]: For 3621/3643 co-relation queries the response was YES. [2022-01-19 13:03:14,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3325 conditions, 1086 events. 148/1086 cut-off events. For 3621/3643 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8049 event pairs, 71 based on Foata normal form. 11/1047 useless extension candidates. Maximal degree in co-relation 3254. Up to 265 conditions per place. [2022-01-19 13:03:14,896 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 64 selfloop transitions, 27 changer transitions 27/290 dead transitions. [2022-01-19 13:03:14,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 290 transitions, 1954 flow [2022-01-19 13:03:14,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:03:14,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:03:14,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2920 transitions. [2022-01-19 13:03:14,899 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8179271708683473 [2022-01-19 13:03:14,899 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2920 transitions. [2022-01-19 13:03:14,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2920 transitions. [2022-01-19 13:03:14,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:14,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2920 transitions. [2022-01-19 13:03:14,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.76470588235293) internal successors, (2920), 17 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:14,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:14,906 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:14,907 INFO L186 Difference]: Start difference. First operand has 309 places, 248 transitions, 1240 flow. Second operand 17 states and 2920 transitions. [2022-01-19 13:03:14,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 290 transitions, 1954 flow [2022-01-19 13:03:14,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 290 transitions, 1866 flow, removed 31 selfloop flow, removed 13 redundant places. [2022-01-19 13:03:14,932 INFO L242 Difference]: Finished difference. Result has 308 places, 256 transitions, 1409 flow [2022-01-19 13:03:14,933 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1409, PETRI_PLACES=308, PETRI_TRANSITIONS=256} [2022-01-19 13:03:14,933 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 121 predicate places. [2022-01-19 13:03:14,933 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 256 transitions, 1409 flow [2022-01-19 13:03:14,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:14,933 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:14,934 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:14,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 13:03:14,934 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:14,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:14,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1915196226, now seen corresponding path program 16 times [2022-01-19 13:03:14,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:14,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616833171] [2022-01-19 13:03:14,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:14,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:15,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:15,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616833171] [2022-01-19 13:03:15,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616833171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:15,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:15,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:15,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609996441] [2022-01-19 13:03:15,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:15,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:15,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:15,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:15,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:15,030 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:15,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 256 transitions, 1409 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:15,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:15,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:15,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:15,358 INFO L129 PetriNetUnfolder]: 138/1037 cut-off events. [2022-01-19 13:03:15,358 INFO L130 PetriNetUnfolder]: For 3304/3326 co-relation queries the response was YES. [2022-01-19 13:03:15,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3131 conditions, 1037 events. 138/1037 cut-off events. For 3304/3326 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7508 event pairs, 71 based on Foata normal form. 9/995 useless extension candidates. Maximal degree in co-relation 3061. Up to 260 conditions per place. [2022-01-19 13:03:15,367 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 61 selfloop transitions, 14 changer transitions 33/280 dead transitions. [2022-01-19 13:03:15,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 280 transitions, 1849 flow [2022-01-19 13:03:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:03:15,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:03:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3083 transitions. [2022-01-19 13:03:15,370 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8156084656084656 [2022-01-19 13:03:15,370 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3083 transitions. [2022-01-19 13:03:15,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3083 transitions. [2022-01-19 13:03:15,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:15,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3083 transitions. [2022-01-19 13:03:15,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.27777777777777) internal successors, (3083), 18 states have internal predecessors, (3083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:15,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:15,377 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:15,377 INFO L186 Difference]: Start difference. First operand has 308 places, 256 transitions, 1409 flow. Second operand 18 states and 3083 transitions. [2022-01-19 13:03:15,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 280 transitions, 1849 flow [2022-01-19 13:03:15,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 280 transitions, 1745 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-01-19 13:03:15,401 INFO L242 Difference]: Finished difference. Result has 315 places, 241 transitions, 1164 flow [2022-01-19 13:03:15,402 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1164, PETRI_PLACES=315, PETRI_TRANSITIONS=241} [2022-01-19 13:03:15,402 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 128 predicate places. [2022-01-19 13:03:15,402 INFO L470 AbstractCegarLoop]: Abstraction has has 315 places, 241 transitions, 1164 flow [2022-01-19 13:03:15,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:15,403 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:15,403 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:15,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 13:03:15,403 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:15,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:15,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2072010770, now seen corresponding path program 17 times [2022-01-19 13:03:15,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:15,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952392434] [2022-01-19 13:03:15,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:15,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:15,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:15,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952392434] [2022-01-19 13:03:15,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952392434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:15,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:15,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:15,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331888070] [2022-01-19 13:03:15,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:15,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:15,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:15,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:15,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:15,507 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:15,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 241 transitions, 1164 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:15,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:15,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:15,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:15,869 INFO L129 PetriNetUnfolder]: 138/1033 cut-off events. [2022-01-19 13:03:15,869 INFO L130 PetriNetUnfolder]: For 3545/3565 co-relation queries the response was YES. [2022-01-19 13:03:15,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 1033 events. 138/1033 cut-off events. For 3545/3565 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7476 event pairs, 70 based on Foata normal form. 9/992 useless extension candidates. Maximal degree in co-relation 3041. Up to 251 conditions per place. [2022-01-19 13:03:15,877 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 57 selfloop transitions, 20 changer transitions 34/283 dead transitions. [2022-01-19 13:03:15,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 283 transitions, 1927 flow [2022-01-19 13:03:15,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 13:03:15,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 13:03:15,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3594 transitions. [2022-01-19 13:03:15,886 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8149659863945579 [2022-01-19 13:03:15,886 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3594 transitions. [2022-01-19 13:03:15,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3594 transitions. [2022-01-19 13:03:15,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:15,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3594 transitions. [2022-01-19 13:03:15,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.14285714285714) internal successors, (3594), 21 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:15,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:15,898 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:15,898 INFO L186 Difference]: Start difference. First operand has 315 places, 241 transitions, 1164 flow. Second operand 21 states and 3594 transitions. [2022-01-19 13:03:15,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 283 transitions, 1927 flow [2022-01-19 13:03:15,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 283 transitions, 1749 flow, removed 49 selfloop flow, removed 18 redundant places. [2022-01-19 13:03:15,920 INFO L242 Difference]: Finished difference. Result has 307 places, 244 transitions, 1229 flow [2022-01-19 13:03:15,920 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1229, PETRI_PLACES=307, PETRI_TRANSITIONS=244} [2022-01-19 13:03:15,921 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 120 predicate places. [2022-01-19 13:03:15,922 INFO L470 AbstractCegarLoop]: Abstraction has has 307 places, 244 transitions, 1229 flow [2022-01-19 13:03:15,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:15,922 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:15,922 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:15,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 13:03:15,923 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:15,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:15,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1943238090, now seen corresponding path program 18 times [2022-01-19 13:03:15,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:15,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094843942] [2022-01-19 13:03:15,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:15,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:16,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:16,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094843942] [2022-01-19 13:03:16,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094843942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:16,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:16,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:16,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340562310] [2022-01-19 13:03:16,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:16,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:16,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:16,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:16,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:16,043 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:16,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 244 transitions, 1229 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:16,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:16,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:16,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:16,358 INFO L129 PetriNetUnfolder]: 133/999 cut-off events. [2022-01-19 13:03:16,358 INFO L130 PetriNetUnfolder]: For 3165/3185 co-relation queries the response was YES. [2022-01-19 13:03:16,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2984 conditions, 999 events. 133/999 cut-off events. For 3165/3185 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7102 event pairs, 71 based on Foata normal form. 9/957 useless extension candidates. Maximal degree in co-relation 2913. Up to 255 conditions per place. [2022-01-19 13:03:16,370 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 53 selfloop transitions, 21 changer transitions 30/276 dead transitions. [2022-01-19 13:03:16,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 276 transitions, 1809 flow [2022-01-19 13:03:16,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:03:16,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:03:16,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3087 transitions. [2022-01-19 13:03:16,372 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-01-19 13:03:16,373 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3087 transitions. [2022-01-19 13:03:16,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3087 transitions. [2022-01-19 13:03:16,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:16,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3087 transitions. [2022-01-19 13:03:16,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.5) internal successors, (3087), 18 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:16,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:16,380 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:16,380 INFO L186 Difference]: Start difference. First operand has 307 places, 244 transitions, 1229 flow. Second operand 18 states and 3087 transitions. [2022-01-19 13:03:16,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 276 transitions, 1809 flow [2022-01-19 13:03:16,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 276 transitions, 1692 flow, removed 44 selfloop flow, removed 14 redundant places. [2022-01-19 13:03:16,404 INFO L242 Difference]: Finished difference. Result has 302 places, 244 transitions, 1239 flow [2022-01-19 13:03:16,405 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1239, PETRI_PLACES=302, PETRI_TRANSITIONS=244} [2022-01-19 13:03:16,405 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 115 predicate places. [2022-01-19 13:03:16,405 INFO L470 AbstractCegarLoop]: Abstraction has has 302 places, 244 transitions, 1239 flow [2022-01-19 13:03:16,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:16,406 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:16,406 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:16,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 13:03:16,406 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:16,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:16,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1724336444, now seen corresponding path program 19 times [2022-01-19 13:03:16,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:16,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744496543] [2022-01-19 13:03:16,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:16,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:16,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:16,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744496543] [2022-01-19 13:03:16,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744496543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:16,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:16,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:16,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183274081] [2022-01-19 13:03:16,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:16,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:16,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:16,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:16,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:16,517 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:16,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 244 transitions, 1239 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:16,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:16,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:16,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:16,855 INFO L129 PetriNetUnfolder]: 129/984 cut-off events. [2022-01-19 13:03:16,855 INFO L130 PetriNetUnfolder]: For 2820/2840 co-relation queries the response was YES. [2022-01-19 13:03:16,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2834 conditions, 984 events. 129/984 cut-off events. For 2820/2840 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6951 event pairs, 71 based on Foata normal form. 9/943 useless extension candidates. Maximal degree in co-relation 2769. Up to 254 conditions per place. [2022-01-19 13:03:16,866 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 51 selfloop transitions, 13 changer transitions 32/268 dead transitions. [2022-01-19 13:03:16,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 268 transitions, 1607 flow [2022-01-19 13:03:16,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:03:16,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:03:16,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3084 transitions. [2022-01-19 13:03:16,869 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8158730158730159 [2022-01-19 13:03:16,869 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3084 transitions. [2022-01-19 13:03:16,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3084 transitions. [2022-01-19 13:03:16,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:16,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3084 transitions. [2022-01-19 13:03:16,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.33333333333334) internal successors, (3084), 18 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:16,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:16,875 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:16,875 INFO L186 Difference]: Start difference. First operand has 302 places, 244 transitions, 1239 flow. Second operand 18 states and 3084 transitions. [2022-01-19 13:03:16,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 268 transitions, 1607 flow [2022-01-19 13:03:16,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 268 transitions, 1479 flow, removed 26 selfloop flow, removed 15 redundant places. [2022-01-19 13:03:16,896 INFO L242 Difference]: Finished difference. Result has 303 places, 235 transitions, 1062 flow [2022-01-19 13:03:16,896 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1062, PETRI_PLACES=303, PETRI_TRANSITIONS=235} [2022-01-19 13:03:16,897 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 116 predicate places. [2022-01-19 13:03:16,897 INFO L470 AbstractCegarLoop]: Abstraction has has 303 places, 235 transitions, 1062 flow [2022-01-19 13:03:16,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:16,897 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:16,897 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:16,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 13:03:16,897 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:16,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:16,898 INFO L85 PathProgramCache]: Analyzing trace with hash -577054250, now seen corresponding path program 20 times [2022-01-19 13:03:16,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:16,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993860161] [2022-01-19 13:03:16,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:16,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:17,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:17,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993860161] [2022-01-19 13:03:17,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993860161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:17,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:17,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:17,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803963501] [2022-01-19 13:03:17,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:17,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:17,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:17,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:17,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:17,004 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:17,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 235 transitions, 1062 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:17,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:17,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:17,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:17,312 INFO L129 PetriNetUnfolder]: 116/882 cut-off events. [2022-01-19 13:03:17,312 INFO L130 PetriNetUnfolder]: For 2289/2309 co-relation queries the response was YES. [2022-01-19 13:03:17,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 882 events. 116/882 cut-off events. For 2289/2309 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5971 event pairs, 68 based on Foata normal form. 9/843 useless extension candidates. Maximal degree in co-relation 2398. Up to 234 conditions per place. [2022-01-19 13:03:17,320 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 38 selfloop transitions, 0 changer transitions 44/248 dead transitions. [2022-01-19 13:03:17,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 248 transitions, 1258 flow [2022-01-19 13:03:17,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:03:17,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:03:17,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2905 transitions. [2022-01-19 13:03:17,322 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8137254901960784 [2022-01-19 13:03:17,322 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2905 transitions. [2022-01-19 13:03:17,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2905 transitions. [2022-01-19 13:03:17,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:17,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2905 transitions. [2022-01-19 13:03:17,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 170.88235294117646) internal successors, (2905), 17 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:17,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:17,328 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:17,328 INFO L186 Difference]: Start difference. First operand has 303 places, 235 transitions, 1062 flow. Second operand 17 states and 2905 transitions. [2022-01-19 13:03:17,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 248 transitions, 1258 flow [2022-01-19 13:03:17,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 248 transitions, 1171 flow, removed 17 selfloop flow, removed 18 redundant places. [2022-01-19 13:03:17,344 INFO L242 Difference]: Finished difference. Result has 287 places, 204 transitions, 701 flow [2022-01-19 13:03:17,344 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=701, PETRI_PLACES=287, PETRI_TRANSITIONS=204} [2022-01-19 13:03:17,344 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2022-01-19 13:03:17,344 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 204 transitions, 701 flow [2022-01-19 13:03:17,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:17,345 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:17,345 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:17,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 13:03:17,345 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:17,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:17,346 INFO L85 PathProgramCache]: Analyzing trace with hash 613911462, now seen corresponding path program 3 times [2022-01-19 13:03:17,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:17,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748568729] [2022-01-19 13:03:17,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:17,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:17,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:17,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748568729] [2022-01-19 13:03:17,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748568729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:17,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:17,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:17,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227108722] [2022-01-19 13:03:17,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:17,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:17,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:17,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:17,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:17,441 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:17,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 204 transitions, 701 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:17,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:17,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:17,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:17,745 INFO L129 PetriNetUnfolder]: 122/857 cut-off events. [2022-01-19 13:03:17,746 INFO L130 PetriNetUnfolder]: For 2280/2288 co-relation queries the response was YES. [2022-01-19 13:03:17,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2344 conditions, 857 events. 122/857 cut-off events. For 2280/2288 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5766 event pairs, 50 based on Foata normal form. 1/814 useless extension candidates. Maximal degree in co-relation 2291. Up to 156 conditions per place. [2022-01-19 13:03:17,752 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 65 selfloop transitions, 15 changer transitions 29/265 dead transitions. [2022-01-19 13:03:17,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 265 transitions, 1517 flow [2022-01-19 13:03:17,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 13:03:17,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 13:03:17,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3430 transitions. [2022-01-19 13:03:17,755 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-01-19 13:03:17,755 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3430 transitions. [2022-01-19 13:03:17,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3430 transitions. [2022-01-19 13:03:17,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:17,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3430 transitions. [2022-01-19 13:03:17,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.5) internal successors, (3430), 20 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:17,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:17,763 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:17,763 INFO L186 Difference]: Start difference. First operand has 287 places, 204 transitions, 701 flow. Second operand 20 states and 3430 transitions. [2022-01-19 13:03:17,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 265 transitions, 1517 flow [2022-01-19 13:03:17,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 265 transitions, 1440 flow, removed 34 selfloop flow, removed 12 redundant places. [2022-01-19 13:03:17,776 INFO L242 Difference]: Finished difference. Result has 266 places, 216 transitions, 910 flow [2022-01-19 13:03:17,776 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=910, PETRI_PLACES=266, PETRI_TRANSITIONS=216} [2022-01-19 13:03:17,777 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 79 predicate places. [2022-01-19 13:03:17,777 INFO L470 AbstractCegarLoop]: Abstraction has has 266 places, 216 transitions, 910 flow [2022-01-19 13:03:17,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:17,778 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:17,778 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:17,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 13:03:17,778 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:17,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:17,778 INFO L85 PathProgramCache]: Analyzing trace with hash -749731324, now seen corresponding path program 4 times [2022-01-19 13:03:17,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:17,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582184017] [2022-01-19 13:03:17,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:17,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:17,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:17,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:17,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582184017] [2022-01-19 13:03:17,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582184017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:17,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:17,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:17,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380353713] [2022-01-19 13:03:17,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:17,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:17,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:17,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:17,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:17,879 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:17,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 216 transitions, 910 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:17,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:17,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:17,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:18,239 INFO L129 PetriNetUnfolder]: 121/853 cut-off events. [2022-01-19 13:03:18,239 INFO L130 PetriNetUnfolder]: For 3579/3588 co-relation queries the response was YES. [2022-01-19 13:03:18,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2584 conditions, 853 events. 121/853 cut-off events. For 3579/3588 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5747 event pairs, 43 based on Foata normal form. 1/812 useless extension candidates. Maximal degree in co-relation 2525. Up to 114 conditions per place. [2022-01-19 13:03:18,248 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 83 selfloop transitions, 17 changer transitions 38/294 dead transitions. [2022-01-19 13:03:18,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 294 transitions, 2066 flow [2022-01-19 13:03:18,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 13:03:18,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 13:03:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4114 transitions. [2022-01-19 13:03:18,251 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8162698412698413 [2022-01-19 13:03:18,251 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4114 transitions. [2022-01-19 13:03:18,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4114 transitions. [2022-01-19 13:03:18,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:18,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4114 transitions. [2022-01-19 13:03:18,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.41666666666666) internal successors, (4114), 24 states have internal predecessors, (4114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:18,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:18,259 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:18,260 INFO L186 Difference]: Start difference. First operand has 266 places, 216 transitions, 910 flow. Second operand 24 states and 4114 transitions. [2022-01-19 13:03:18,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 294 transitions, 2066 flow [2022-01-19 13:03:18,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 294 transitions, 1782 flow, removed 142 selfloop flow, removed 8 redundant places. [2022-01-19 13:03:18,277 INFO L242 Difference]: Finished difference. Result has 289 places, 219 transitions, 959 flow [2022-01-19 13:03:18,277 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=959, PETRI_PLACES=289, PETRI_TRANSITIONS=219} [2022-01-19 13:03:18,278 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 102 predicate places. [2022-01-19 13:03:18,278 INFO L470 AbstractCegarLoop]: Abstraction has has 289 places, 219 transitions, 959 flow [2022-01-19 13:03:18,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:18,278 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:18,278 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:18,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 13:03:18,279 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:18,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:18,279 INFO L85 PathProgramCache]: Analyzing trace with hash 726672324, now seen corresponding path program 5 times [2022-01-19 13:03:18,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:18,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175709156] [2022-01-19 13:03:18,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:18,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:18,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:18,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:18,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175709156] [2022-01-19 13:03:18,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175709156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:18,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:18,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:18,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131730122] [2022-01-19 13:03:18,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:18,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:18,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:18,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:18,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:18,389 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:18,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 219 transitions, 959 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:18,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:18,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:18,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:18,738 INFO L129 PetriNetUnfolder]: 131/932 cut-off events. [2022-01-19 13:03:18,739 INFO L130 PetriNetUnfolder]: For 4052/4059 co-relation queries the response was YES. [2022-01-19 13:03:18,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2892 conditions, 932 events. 131/932 cut-off events. For 4052/4059 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6578 event pairs, 46 based on Foata normal form. 4/895 useless extension candidates. Maximal degree in co-relation 2820. Up to 165 conditions per place. [2022-01-19 13:03:18,746 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 74 selfloop transitions, 24 changer transitions 30/284 dead transitions. [2022-01-19 13:03:18,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 284 transitions, 1964 flow [2022-01-19 13:03:18,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 13:03:18,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 13:03:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3766 transitions. [2022-01-19 13:03:18,754 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8151515151515152 [2022-01-19 13:03:18,754 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3766 transitions. [2022-01-19 13:03:18,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3766 transitions. [2022-01-19 13:03:18,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:18,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3766 transitions. [2022-01-19 13:03:18,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.1818181818182) internal successors, (3766), 22 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:18,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:18,789 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:18,789 INFO L186 Difference]: Start difference. First operand has 289 places, 219 transitions, 959 flow. Second operand 22 states and 3766 transitions. [2022-01-19 13:03:18,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 284 transitions, 1964 flow [2022-01-19 13:03:18,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 284 transitions, 1841 flow, removed 54 selfloop flow, removed 19 redundant places. [2022-01-19 13:03:18,811 INFO L242 Difference]: Finished difference. Result has 289 places, 231 transitions, 1150 flow [2022-01-19 13:03:18,811 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1150, PETRI_PLACES=289, PETRI_TRANSITIONS=231} [2022-01-19 13:03:18,812 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 102 predicate places. [2022-01-19 13:03:18,812 INFO L470 AbstractCegarLoop]: Abstraction has has 289 places, 231 transitions, 1150 flow [2022-01-19 13:03:18,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:18,812 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:18,812 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:18,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 13:03:18,813 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:18,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:18,813 INFO L85 PathProgramCache]: Analyzing trace with hash 323320088, now seen corresponding path program 6 times [2022-01-19 13:03:18,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:18,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207877264] [2022-01-19 13:03:18,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:18,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:18,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:18,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207877264] [2022-01-19 13:03:18,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207877264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:18,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:18,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:18,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049579763] [2022-01-19 13:03:18,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:18,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:18,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:18,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:18,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:18,917 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:18,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 231 transitions, 1150 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:18,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:18,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:18,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:19,241 INFO L129 PetriNetUnfolder]: 128/911 cut-off events. [2022-01-19 13:03:19,242 INFO L130 PetriNetUnfolder]: For 3777/3794 co-relation queries the response was YES. [2022-01-19 13:03:19,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2855 conditions, 911 events. 128/911 cut-off events. For 3777/3794 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6383 event pairs, 48 based on Foata normal form. 5/874 useless extension candidates. Maximal degree in co-relation 2785. Up to 161 conditions per place. [2022-01-19 13:03:19,249 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 70 selfloop transitions, 24 changer transitions 31/281 dead transitions. [2022-01-19 13:03:19,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 281 transitions, 2044 flow [2022-01-19 13:03:19,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 13:03:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 13:03:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3601 transitions. [2022-01-19 13:03:19,252 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8165532879818594 [2022-01-19 13:03:19,253 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3601 transitions. [2022-01-19 13:03:19,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3601 transitions. [2022-01-19 13:03:19,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:19,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3601 transitions. [2022-01-19 13:03:19,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.47619047619048) internal successors, (3601), 21 states have internal predecessors, (3601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:19,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:19,260 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:19,260 INFO L186 Difference]: Start difference. First operand has 289 places, 231 transitions, 1150 flow. Second operand 21 states and 3601 transitions. [2022-01-19 13:03:19,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 281 transitions, 2044 flow [2022-01-19 13:03:19,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 281 transitions, 1908 flow, removed 61 selfloop flow, removed 14 redundant places. [2022-01-19 13:03:19,283 INFO L242 Difference]: Finished difference. Result has 297 places, 235 transitions, 1270 flow [2022-01-19 13:03:19,283 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1270, PETRI_PLACES=297, PETRI_TRANSITIONS=235} [2022-01-19 13:03:19,284 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 110 predicate places. [2022-01-19 13:03:19,284 INFO L470 AbstractCegarLoop]: Abstraction has has 297 places, 235 transitions, 1270 flow [2022-01-19 13:03:19,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:19,284 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:19,284 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:19,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 13:03:19,284 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:19,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:19,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2004422760, now seen corresponding path program 7 times [2022-01-19 13:03:19,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:19,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160136634] [2022-01-19 13:03:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:19,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:19,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:19,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:19,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160136634] [2022-01-19 13:03:19,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160136634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:19,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:19,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:19,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109124239] [2022-01-19 13:03:19,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:19,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:19,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:19,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:19,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:19,379 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:19,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 235 transitions, 1270 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:19,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:19,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:19,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:19,636 INFO L129 PetriNetUnfolder]: 120/860 cut-off events. [2022-01-19 13:03:19,636 INFO L130 PetriNetUnfolder]: For 3763/3775 co-relation queries the response was YES. [2022-01-19 13:03:19,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2715 conditions, 860 events. 120/860 cut-off events. For 3763/3775 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5790 event pairs, 41 based on Foata normal form. 6/828 useless extension candidates. Maximal degree in co-relation 2642. Up to 165 conditions per place. [2022-01-19 13:03:19,643 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 72 selfloop transitions, 27 changer transitions 25/280 dead transitions. [2022-01-19 13:03:19,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 280 transitions, 2105 flow [2022-01-19 13:03:19,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:03:19,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:03:19,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3086 transitions. [2022-01-19 13:03:19,647 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8164021164021164 [2022-01-19 13:03:19,647 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3086 transitions. [2022-01-19 13:03:19,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3086 transitions. [2022-01-19 13:03:19,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:19,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3086 transitions. [2022-01-19 13:03:19,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.44444444444446) internal successors, (3086), 18 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:19,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:19,653 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:19,653 INFO L186 Difference]: Start difference. First operand has 297 places, 235 transitions, 1270 flow. Second operand 18 states and 3086 transitions. [2022-01-19 13:03:19,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 280 transitions, 2105 flow [2022-01-19 13:03:19,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 280 transitions, 1921 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-01-19 13:03:19,674 INFO L242 Difference]: Finished difference. Result has 296 places, 241 transitions, 1350 flow [2022-01-19 13:03:19,675 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1350, PETRI_PLACES=296, PETRI_TRANSITIONS=241} [2022-01-19 13:03:19,675 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 109 predicate places. [2022-01-19 13:03:19,675 INFO L470 AbstractCegarLoop]: Abstraction has has 296 places, 241 transitions, 1350 flow [2022-01-19 13:03:19,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:19,675 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:19,676 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:19,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 13:03:19,676 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:19,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:19,676 INFO L85 PathProgramCache]: Analyzing trace with hash 754246134, now seen corresponding path program 8 times [2022-01-19 13:03:19,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:19,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051670658] [2022-01-19 13:03:19,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:19,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:19,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:19,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051670658] [2022-01-19 13:03:19,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051670658] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:19,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:19,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:19,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403574440] [2022-01-19 13:03:19,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:19,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:19,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:19,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:19,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:19,773 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:19,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 241 transitions, 1350 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:19,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:19,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:19,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:20,012 INFO L129 PetriNetUnfolder]: 108/811 cut-off events. [2022-01-19 13:03:20,013 INFO L130 PetriNetUnfolder]: For 2993/3016 co-relation queries the response was YES. [2022-01-19 13:03:20,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2456 conditions, 811 events. 108/811 cut-off events. For 2993/3016 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5311 event pairs, 42 based on Foata normal form. 10/783 useless extension candidates. Maximal degree in co-relation 2386. Up to 156 conditions per place. [2022-01-19 13:03:20,019 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 66 selfloop transitions, 14 changer transitions 27/263 dead transitions. [2022-01-19 13:03:20,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 263 transitions, 1805 flow [2022-01-19 13:03:20,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:03:20,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:03:20,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2741 transitions. [2022-01-19 13:03:20,021 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8157738095238095 [2022-01-19 13:03:20,021 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2741 transitions. [2022-01-19 13:03:20,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2741 transitions. [2022-01-19 13:03:20,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:20,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2741 transitions. [2022-01-19 13:03:20,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.3125) internal successors, (2741), 16 states have internal predecessors, (2741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:20,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:20,026 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:20,026 INFO L186 Difference]: Start difference. First operand has 296 places, 241 transitions, 1350 flow. Second operand 16 states and 2741 transitions. [2022-01-19 13:03:20,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 263 transitions, 1805 flow [2022-01-19 13:03:20,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 263 transitions, 1680 flow, removed 44 selfloop flow, removed 11 redundant places. [2022-01-19 13:03:20,046 INFO L242 Difference]: Finished difference. Result has 296 places, 225 transitions, 1071 flow [2022-01-19 13:03:20,046 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1071, PETRI_PLACES=296, PETRI_TRANSITIONS=225} [2022-01-19 13:03:20,047 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 109 predicate places. [2022-01-19 13:03:20,047 INFO L470 AbstractCegarLoop]: Abstraction has has 296 places, 225 transitions, 1071 flow [2022-01-19 13:03:20,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:20,047 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:20,047 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:20,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 13:03:20,048 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:20,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:20,048 INFO L85 PathProgramCache]: Analyzing trace with hash 260612428, now seen corresponding path program 9 times [2022-01-19 13:03:20,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:20,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419716425] [2022-01-19 13:03:20,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:20,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:20,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:20,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419716425] [2022-01-19 13:03:20,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419716425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:20,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:20,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:20,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359902961] [2022-01-19 13:03:20,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:20,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:20,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:20,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:20,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:20,149 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:20,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 225 transitions, 1071 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:20,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:20,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:20,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:20,418 INFO L129 PetriNetUnfolder]: 113/835 cut-off events. [2022-01-19 13:03:20,418 INFO L130 PetriNetUnfolder]: For 3036/3052 co-relation queries the response was YES. [2022-01-19 13:03:20,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2498 conditions, 835 events. 113/835 cut-off events. For 3036/3052 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5550 event pairs, 44 based on Foata normal form. 4/799 useless extension candidates. Maximal degree in co-relation 2432. Up to 158 conditions per place. [2022-01-19 13:03:20,424 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 63 selfloop transitions, 23 changer transitions 24/266 dead transitions. [2022-01-19 13:03:20,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 266 transitions, 1809 flow [2022-01-19 13:03:20,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:03:20,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:03:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2921 transitions. [2022-01-19 13:03:20,426 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8182072829131652 [2022-01-19 13:03:20,426 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2921 transitions. [2022-01-19 13:03:20,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2921 transitions. [2022-01-19 13:03:20,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:20,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2921 transitions. [2022-01-19 13:03:20,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.8235294117647) internal successors, (2921), 17 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:20,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:20,431 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:20,431 INFO L186 Difference]: Start difference. First operand has 296 places, 225 transitions, 1071 flow. Second operand 17 states and 2921 transitions. [2022-01-19 13:03:20,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 266 transitions, 1809 flow [2022-01-19 13:03:20,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 266 transitions, 1700 flow, removed 17 selfloop flow, removed 14 redundant places. [2022-01-19 13:03:20,448 INFO L242 Difference]: Finished difference. Result has 287 places, 233 transitions, 1223 flow [2022-01-19 13:03:20,448 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1223, PETRI_PLACES=287, PETRI_TRANSITIONS=233} [2022-01-19 13:03:20,448 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2022-01-19 13:03:20,448 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 233 transitions, 1223 flow [2022-01-19 13:03:20,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:20,449 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:20,449 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:20,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 13:03:20,449 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:20,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:20,450 INFO L85 PathProgramCache]: Analyzing trace with hash -695288172, now seen corresponding path program 10 times [2022-01-19 13:03:20,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:20,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145534361] [2022-01-19 13:03:20,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:20,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:20,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:20,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145534361] [2022-01-19 13:03:20,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145534361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:20,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:20,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:20,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692310780] [2022-01-19 13:03:20,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:20,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:20,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:20,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:20,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:20,543 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:20,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 233 transitions, 1223 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:20,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:20,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:20,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:20,814 INFO L129 PetriNetUnfolder]: 114/816 cut-off events. [2022-01-19 13:03:20,814 INFO L130 PetriNetUnfolder]: For 2994/3010 co-relation queries the response was YES. [2022-01-19 13:03:20,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 816 events. 114/816 cut-off events. For 2994/3010 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5336 event pairs, 46 based on Foata normal form. 4/779 useless extension candidates. Maximal degree in co-relation 2449. Up to 161 conditions per place. [2022-01-19 13:03:20,821 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 64 selfloop transitions, 25 changer transitions 24/269 dead transitions. [2022-01-19 13:03:20,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 269 transitions, 1939 flow [2022-01-19 13:03:20,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:03:20,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:03:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2919 transitions. [2022-01-19 13:03:20,823 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8176470588235294 [2022-01-19 13:03:20,823 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2919 transitions. [2022-01-19 13:03:20,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2919 transitions. [2022-01-19 13:03:20,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:20,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2919 transitions. [2022-01-19 13:03:20,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.7058823529412) internal successors, (2919), 17 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:20,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:20,827 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:20,827 INFO L186 Difference]: Start difference. First operand has 287 places, 233 transitions, 1223 flow. Second operand 17 states and 2919 transitions. [2022-01-19 13:03:20,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 269 transitions, 1939 flow [2022-01-19 13:03:20,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 269 transitions, 1819 flow, removed 36 selfloop flow, removed 9 redundant places. [2022-01-19 13:03:20,843 INFO L242 Difference]: Finished difference. Result has 295 places, 240 transitions, 1341 flow [2022-01-19 13:03:20,843 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1341, PETRI_PLACES=295, PETRI_TRANSITIONS=240} [2022-01-19 13:03:20,843 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-01-19 13:03:20,844 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 240 transitions, 1341 flow [2022-01-19 13:03:20,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:20,844 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:20,844 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:20,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 13:03:20,844 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:20,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:20,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1027010308, now seen corresponding path program 11 times [2022-01-19 13:03:20,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:20,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371378232] [2022-01-19 13:03:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:20,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:20,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:20,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371378232] [2022-01-19 13:03:20,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371378232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:20,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:20,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:20,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812374559] [2022-01-19 13:03:20,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:20,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:20,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:20,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:20,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:20,967 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:20,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 240 transitions, 1341 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:20,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:20,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:20,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:21,234 INFO L129 PetriNetUnfolder]: 103/800 cut-off events. [2022-01-19 13:03:21,234 INFO L130 PetriNetUnfolder]: For 2562/2578 co-relation queries the response was YES. [2022-01-19 13:03:21,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 800 events. 103/800 cut-off events. For 2562/2578 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5262 event pairs, 42 based on Foata normal form. 4/766 useless extension candidates. Maximal degree in co-relation 2244. Up to 154 conditions per place. [2022-01-19 13:03:21,239 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 61 selfloop transitions, 14 changer transitions 30/261 dead transitions. [2022-01-19 13:03:21,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 261 transitions, 1750 flow [2022-01-19 13:03:21,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:03:21,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:03:21,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3084 transitions. [2022-01-19 13:03:21,242 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8158730158730159 [2022-01-19 13:03:21,242 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3084 transitions. [2022-01-19 13:03:21,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3084 transitions. [2022-01-19 13:03:21,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:21,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3084 transitions. [2022-01-19 13:03:21,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.33333333333334) internal successors, (3084), 18 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:21,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:21,248 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:21,248 INFO L186 Difference]: Start difference. First operand has 295 places, 240 transitions, 1341 flow. Second operand 18 states and 3084 transitions. [2022-01-19 13:03:21,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 261 transitions, 1750 flow [2022-01-19 13:03:21,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 261 transitions, 1662 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-01-19 13:03:21,266 INFO L242 Difference]: Finished difference. Result has 301 places, 226 transitions, 1085 flow [2022-01-19 13:03:21,267 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1085, PETRI_PLACES=301, PETRI_TRANSITIONS=226} [2022-01-19 13:03:21,267 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 114 predicate places. [2022-01-19 13:03:21,267 INFO L470 AbstractCegarLoop]: Abstraction has has 301 places, 226 transitions, 1085 flow [2022-01-19 13:03:21,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:21,268 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:21,268 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:21,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 13:03:21,268 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:21,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:21,269 INFO L85 PathProgramCache]: Analyzing trace with hash 863813416, now seen corresponding path program 12 times [2022-01-19 13:03:21,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:21,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666914977] [2022-01-19 13:03:21,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:21,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:21,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:21,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666914977] [2022-01-19 13:03:21,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666914977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:21,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:21,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:21,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230074150] [2022-01-19 13:03:21,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:21,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:21,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:21,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:21,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:21,400 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:21,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 226 transitions, 1085 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:21,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:21,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:21,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:21,639 INFO L129 PetriNetUnfolder]: 89/716 cut-off events. [2022-01-19 13:03:21,639 INFO L130 PetriNetUnfolder]: For 2081/2097 co-relation queries the response was YES. [2022-01-19 13:03:21,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1964 conditions, 716 events. 89/716 cut-off events. For 2081/2097 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4429 event pairs, 42 based on Foata normal form. 4/683 useless extension candidates. Maximal degree in co-relation 1896. Up to 144 conditions per place. [2022-01-19 13:03:21,644 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 51 selfloop transitions, 3 changer transitions 29/239 dead transitions. [2022-01-19 13:03:21,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 239 transitions, 1372 flow [2022-01-19 13:03:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:03:21,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:03:21,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3073 transitions. [2022-01-19 13:03:21,653 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.812962962962963 [2022-01-19 13:03:21,653 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3073 transitions. [2022-01-19 13:03:21,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3073 transitions. [2022-01-19 13:03:21,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:21,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3073 transitions. [2022-01-19 13:03:21,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.72222222222223) internal successors, (3073), 18 states have internal predecessors, (3073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:21,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:21,658 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:21,658 INFO L186 Difference]: Start difference. First operand has 301 places, 226 transitions, 1085 flow. Second operand 18 states and 3073 transitions. [2022-01-19 13:03:21,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 239 transitions, 1372 flow [2022-01-19 13:03:21,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 239 transitions, 1255 flow, removed 19 selfloop flow, removed 19 redundant places. [2022-01-19 13:03:21,672 INFO L242 Difference]: Finished difference. Result has 287 places, 206 transitions, 762 flow [2022-01-19 13:03:21,672 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=762, PETRI_PLACES=287, PETRI_TRANSITIONS=206} [2022-01-19 13:03:21,672 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2022-01-19 13:03:21,672 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 206 transitions, 762 flow [2022-01-19 13:03:21,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:21,673 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:21,673 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:21,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 13:03:21,673 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:21,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:21,673 INFO L85 PathProgramCache]: Analyzing trace with hash -484428534, now seen corresponding path program 13 times [2022-01-19 13:03:21,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:21,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755210333] [2022-01-19 13:03:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:21,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:21,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:21,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:21,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755210333] [2022-01-19 13:03:21,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755210333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:21,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:21,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:21,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176573168] [2022-01-19 13:03:21,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:21,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:21,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:21,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:21,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:21,778 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:21,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 206 transitions, 762 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:21,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:21,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:21,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:22,060 INFO L129 PetriNetUnfolder]: 104/809 cut-off events. [2022-01-19 13:03:22,060 INFO L130 PetriNetUnfolder]: For 2107/2110 co-relation queries the response was YES. [2022-01-19 13:03:22,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2177 conditions, 809 events. 104/809 cut-off events. For 2107/2110 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5324 event pairs, 39 based on Foata normal form. 1/775 useless extension candidates. Maximal degree in co-relation 2114. Up to 129 conditions per place. [2022-01-19 13:03:22,065 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 56 selfloop transitions, 20 changer transitions 29/261 dead transitions. [2022-01-19 13:03:22,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 261 transitions, 1591 flow [2022-01-19 13:03:22,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 13:03:22,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 13:03:22,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3762 transitions. [2022-01-19 13:03:22,067 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8142857142857143 [2022-01-19 13:03:22,067 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3762 transitions. [2022-01-19 13:03:22,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3762 transitions. [2022-01-19 13:03:22,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:22,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3762 transitions. [2022-01-19 13:03:22,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.0) internal successors, (3762), 22 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:22,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:22,072 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:22,072 INFO L186 Difference]: Start difference. First operand has 287 places, 206 transitions, 762 flow. Second operand 22 states and 3762 transitions. [2022-01-19 13:03:22,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 261 transitions, 1591 flow [2022-01-19 13:03:22,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 261 transitions, 1442 flow, removed 33 selfloop flow, removed 20 redundant places. [2022-01-19 13:03:22,081 INFO L242 Difference]: Finished difference. Result has 274 places, 218 transitions, 916 flow [2022-01-19 13:03:22,081 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=916, PETRI_PLACES=274, PETRI_TRANSITIONS=218} [2022-01-19 13:03:22,082 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 87 predicate places. [2022-01-19 13:03:22,082 INFO L470 AbstractCegarLoop]: Abstraction has has 274 places, 218 transitions, 916 flow [2022-01-19 13:03:22,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:22,082 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:22,082 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:22,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 13:03:22,082 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:22,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:22,083 INFO L85 PathProgramCache]: Analyzing trace with hash 375959954, now seen corresponding path program 14 times [2022-01-19 13:03:22,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:22,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158039597] [2022-01-19 13:03:22,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:22,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:22,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:22,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158039597] [2022-01-19 13:03:22,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158039597] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:22,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:22,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:22,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655539898] [2022-01-19 13:03:22,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:22,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:22,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:22,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:22,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:22,179 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:22,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 218 transitions, 916 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:22,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:22,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:22,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:22,424 INFO L129 PetriNetUnfolder]: 106/799 cut-off events. [2022-01-19 13:03:22,424 INFO L130 PetriNetUnfolder]: For 2143/2146 co-relation queries the response was YES. [2022-01-19 13:03:22,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 799 events. 106/799 cut-off events. For 2143/2146 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5172 event pairs, 41 based on Foata normal form. 1/764 useless extension candidates. Maximal degree in co-relation 2195. Up to 139 conditions per place. [2022-01-19 13:03:22,430 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 54 selfloop transitions, 27 changer transitions 24/261 dead transitions. [2022-01-19 13:03:22,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 261 transitions, 1636 flow [2022-01-19 13:03:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:03:22,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:03:22,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2914 transitions. [2022-01-19 13:03:22,433 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8162464985994398 [2022-01-19 13:03:22,433 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2914 transitions. [2022-01-19 13:03:22,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2914 transitions. [2022-01-19 13:03:22,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:22,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2914 transitions. [2022-01-19 13:03:22,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.41176470588235) internal successors, (2914), 17 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:22,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:22,438 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:22,438 INFO L186 Difference]: Start difference. First operand has 274 places, 218 transitions, 916 flow. Second operand 17 states and 2914 transitions. [2022-01-19 13:03:22,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 261 transitions, 1636 flow [2022-01-19 13:03:22,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 261 transitions, 1553 flow, removed 35 selfloop flow, removed 11 redundant places. [2022-01-19 13:03:22,447 INFO L242 Difference]: Finished difference. Result has 275 places, 226 transitions, 1075 flow [2022-01-19 13:03:22,448 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1075, PETRI_PLACES=275, PETRI_TRANSITIONS=226} [2022-01-19 13:03:22,448 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 88 predicate places. [2022-01-19 13:03:22,448 INFO L470 AbstractCegarLoop]: Abstraction has has 275 places, 226 transitions, 1075 flow [2022-01-19 13:03:22,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:22,449 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:22,449 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:22,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 13:03:22,449 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:22,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:22,449 INFO L85 PathProgramCache]: Analyzing trace with hash -406108784, now seen corresponding path program 15 times [2022-01-19 13:03:22,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:22,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699534942] [2022-01-19 13:03:22,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:22,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:22,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:22,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:22,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699534942] [2022-01-19 13:03:22,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699534942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:22,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:22,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:22,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244447616] [2022-01-19 13:03:22,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:22,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:22,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:22,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:22,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:22,557 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:22,558 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 226 transitions, 1075 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:22,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:22,558 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:22,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:22,821 INFO L129 PetriNetUnfolder]: 104/816 cut-off events. [2022-01-19 13:03:22,821 INFO L130 PetriNetUnfolder]: For 2435/2438 co-relation queries the response was YES. [2022-01-19 13:03:22,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2318 conditions, 816 events. 104/816 cut-off events. For 2435/2438 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5412 event pairs, 39 based on Foata normal form. 1/781 useless extension candidates. Maximal degree in co-relation 2257. Up to 140 conditions per place. [2022-01-19 13:03:22,826 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 56 selfloop transitions, 24 changer transitions 27/263 dead transitions. [2022-01-19 13:03:22,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 263 transitions, 1729 flow [2022-01-19 13:03:22,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:03:22,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:03:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2749 transitions. [2022-01-19 13:03:22,828 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8181547619047619 [2022-01-19 13:03:22,828 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2749 transitions. [2022-01-19 13:03:22,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2749 transitions. [2022-01-19 13:03:22,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:22,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2749 transitions. [2022-01-19 13:03:22,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.8125) internal successors, (2749), 16 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:22,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:22,832 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:22,832 INFO L186 Difference]: Start difference. First operand has 275 places, 226 transitions, 1075 flow. Second operand 16 states and 2749 transitions. [2022-01-19 13:03:22,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 263 transitions, 1729 flow [2022-01-19 13:03:22,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 263 transitions, 1623 flow, removed 26 selfloop flow, removed 9 redundant places. [2022-01-19 13:03:22,843 INFO L242 Difference]: Finished difference. Result has 281 places, 230 transitions, 1147 flow [2022-01-19 13:03:22,843 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1147, PETRI_PLACES=281, PETRI_TRANSITIONS=230} [2022-01-19 13:03:22,844 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 94 predicate places. [2022-01-19 13:03:22,844 INFO L470 AbstractCegarLoop]: Abstraction has has 281 places, 230 transitions, 1147 flow [2022-01-19 13:03:22,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:22,844 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:22,844 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:22,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 13:03:22,844 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:22,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:22,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1088777360, now seen corresponding path program 16 times [2022-01-19 13:03:22,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:22,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932933521] [2022-01-19 13:03:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:22,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:22,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:22,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932933521] [2022-01-19 13:03:22,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932933521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:22,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:22,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:22,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947286257] [2022-01-19 13:03:22,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:22,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:22,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:22,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:22,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:22,948 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:22,949 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 230 transitions, 1147 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:22,949 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:22,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:22,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:23,219 INFO L129 PetriNetUnfolder]: 103/803 cut-off events. [2022-01-19 13:03:23,219 INFO L130 PetriNetUnfolder]: For 2500/2503 co-relation queries the response was YES. [2022-01-19 13:03:23,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 803 events. 103/803 cut-off events. For 2500/2503 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5272 event pairs, 38 based on Foata normal form. 1/768 useless extension candidates. Maximal degree in co-relation 2235. Up to 127 conditions per place. [2022-01-19 13:03:23,224 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 61 selfloop transitions, 25 changer transitions 29/271 dead transitions. [2022-01-19 13:03:23,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 271 transitions, 1937 flow [2022-01-19 13:03:23,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 13:03:23,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 13:03:23,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3592 transitions. [2022-01-19 13:03:23,226 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8145124716553288 [2022-01-19 13:03:23,226 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3592 transitions. [2022-01-19 13:03:23,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3592 transitions. [2022-01-19 13:03:23,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:23,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3592 transitions. [2022-01-19 13:03:23,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.04761904761904) internal successors, (3592), 21 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:23,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:23,231 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:23,231 INFO L186 Difference]: Start difference. First operand has 281 places, 230 transitions, 1147 flow. Second operand 21 states and 3592 transitions. [2022-01-19 13:03:23,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 271 transitions, 1937 flow [2022-01-19 13:03:23,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 271 transitions, 1810 flow, removed 37 selfloop flow, removed 8 redundant places. [2022-01-19 13:03:23,244 INFO L242 Difference]: Finished difference. Result has 300 places, 233 transitions, 1223 flow [2022-01-19 13:03:23,244 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1223, PETRI_PLACES=300, PETRI_TRANSITIONS=233} [2022-01-19 13:03:23,244 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 113 predicate places. [2022-01-19 13:03:23,245 INFO L470 AbstractCegarLoop]: Abstraction has has 300 places, 233 transitions, 1223 flow [2022-01-19 13:03:23,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:23,245 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:23,245 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:23,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 13:03:23,245 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:23,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:23,246 INFO L85 PathProgramCache]: Analyzing trace with hash -714938564, now seen corresponding path program 17 times [2022-01-19 13:03:23,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:23,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426991213] [2022-01-19 13:03:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:23,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:23,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:23,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426991213] [2022-01-19 13:03:23,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426991213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:23,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:23,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:23,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423696147] [2022-01-19 13:03:23,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:23,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:23,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:23,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:23,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:23,348 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:23,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 233 transitions, 1223 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:23,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:23,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:23,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:23,581 INFO L129 PetriNetUnfolder]: 88/727 cut-off events. [2022-01-19 13:03:23,581 INFO L130 PetriNetUnfolder]: For 2321/2324 co-relation queries the response was YES. [2022-01-19 13:03:23,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 727 events. 88/727 cut-off events. For 2321/2324 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4538 event pairs, 35 based on Foata normal form. 1/693 useless extension candidates. Maximal degree in co-relation 1965. Up to 129 conditions per place. [2022-01-19 13:03:23,586 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 54 selfloop transitions, 13 changer transitions 29/252 dead transitions. [2022-01-19 13:03:23,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 252 transitions, 1616 flow [2022-01-19 13:03:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:03:23,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:03:23,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3077 transitions. [2022-01-19 13:03:23,588 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.814021164021164 [2022-01-19 13:03:23,588 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3077 transitions. [2022-01-19 13:03:23,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3077 transitions. [2022-01-19 13:03:23,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:23,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3077 transitions. [2022-01-19 13:03:23,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.94444444444446) internal successors, (3077), 18 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:23,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:23,592 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:23,592 INFO L186 Difference]: Start difference. First operand has 300 places, 233 transitions, 1223 flow. Second operand 18 states and 3077 transitions. [2022-01-19 13:03:23,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 252 transitions, 1616 flow [2022-01-19 13:03:23,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 252 transitions, 1502 flow, removed 37 selfloop flow, removed 16 redundant places. [2022-01-19 13:03:23,604 INFO L242 Difference]: Finished difference. Result has 295 places, 218 transitions, 983 flow [2022-01-19 13:03:23,605 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=983, PETRI_PLACES=295, PETRI_TRANSITIONS=218} [2022-01-19 13:03:23,605 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-01-19 13:03:23,605 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 218 transitions, 983 flow [2022-01-19 13:03:23,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:23,605 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:23,606 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:23,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 13:03:23,606 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:23,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:23,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1676233364, now seen corresponding path program 18 times [2022-01-19 13:03:23,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:23,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17722429] [2022-01-19 13:03:23,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:23,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:23,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:23,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17722429] [2022-01-19 13:03:23,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17722429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:23,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:23,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:23,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543581758] [2022-01-19 13:03:23,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:23,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:23,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:23,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:23,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:23,702 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:23,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 218 transitions, 983 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:23,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:23,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:23,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:23,967 INFO L129 PetriNetUnfolder]: 84/702 cut-off events. [2022-01-19 13:03:23,967 INFO L130 PetriNetUnfolder]: For 2014/2017 co-relation queries the response was YES. [2022-01-19 13:03:23,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 702 events. 84/702 cut-off events. For 2014/2017 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4293 event pairs, 37 based on Foata normal form. 1/667 useless extension candidates. Maximal degree in co-relation 1840. Up to 125 conditions per place. [2022-01-19 13:03:23,973 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 44 selfloop transitions, 21 changer transitions 26/247 dead transitions. [2022-01-19 13:03:23,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 247 transitions, 1551 flow [2022-01-19 13:03:23,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:03:23,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:03:23,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3082 transitions. [2022-01-19 13:03:23,976 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8153439153439154 [2022-01-19 13:03:23,976 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3082 transitions. [2022-01-19 13:03:23,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3082 transitions. [2022-01-19 13:03:23,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:23,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3082 transitions. [2022-01-19 13:03:23,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.22222222222223) internal successors, (3082), 18 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:23,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:23,981 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:23,981 INFO L186 Difference]: Start difference. First operand has 295 places, 218 transitions, 983 flow. Second operand 18 states and 3082 transitions. [2022-01-19 13:03:23,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 247 transitions, 1551 flow [2022-01-19 13:03:23,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 247 transitions, 1403 flow, removed 34 selfloop flow, removed 19 redundant places. [2022-01-19 13:03:23,994 INFO L242 Difference]: Finished difference. Result has 275 places, 219 transitions, 987 flow [2022-01-19 13:03:23,995 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=987, PETRI_PLACES=275, PETRI_TRANSITIONS=219} [2022-01-19 13:03:23,995 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 88 predicate places. [2022-01-19 13:03:23,995 INFO L470 AbstractCegarLoop]: Abstraction has has 275 places, 219 transitions, 987 flow [2022-01-19 13:03:23,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:23,995 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:23,995 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:23,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 13:03:23,996 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:23,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:23,996 INFO L85 PathProgramCache]: Analyzing trace with hash -287046144, now seen corresponding path program 19 times [2022-01-19 13:03:23,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:23,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361032794] [2022-01-19 13:03:23,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:23,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:24,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:24,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361032794] [2022-01-19 13:03:24,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361032794] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:24,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:24,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:24,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142620809] [2022-01-19 13:03:24,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:24,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:24,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:24,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:24,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:24,092 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:24,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 219 transitions, 987 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:24,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:24,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:24,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:24,321 INFO L129 PetriNetUnfolder]: 80/674 cut-off events. [2022-01-19 13:03:24,321 INFO L130 PetriNetUnfolder]: For 1330/1333 co-relation queries the response was YES. [2022-01-19 13:03:24,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1714 conditions, 674 events. 80/674 cut-off events. For 1330/1333 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4077 event pairs, 36 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 1657. Up to 124 conditions per place. [2022-01-19 13:03:24,325 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 43 selfloop transitions, 12 changer transitions 29/240 dead transitions. [2022-01-19 13:03:24,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 240 transitions, 1340 flow [2022-01-19 13:03:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:03:24,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:03:24,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2911 transitions. [2022-01-19 13:03:24,327 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.815406162464986 [2022-01-19 13:03:24,327 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2911 transitions. [2022-01-19 13:03:24,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2911 transitions. [2022-01-19 13:03:24,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:24,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2911 transitions. [2022-01-19 13:03:24,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.23529411764707) internal successors, (2911), 17 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:24,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:24,332 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:24,332 INFO L186 Difference]: Start difference. First operand has 275 places, 219 transitions, 987 flow. Second operand 17 states and 2911 transitions. [2022-01-19 13:03:24,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 240 transitions, 1340 flow [2022-01-19 13:03:24,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 240 transitions, 1212 flow, removed 31 selfloop flow, removed 11 redundant places. [2022-01-19 13:03:24,341 INFO L242 Difference]: Finished difference. Result has 278 places, 210 transitions, 812 flow [2022-01-19 13:03:24,341 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=812, PETRI_PLACES=278, PETRI_TRANSITIONS=210} [2022-01-19 13:03:24,341 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 91 predicate places. [2022-01-19 13:03:24,341 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 210 transitions, 812 flow [2022-01-19 13:03:24,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:24,342 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:24,342 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:24,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-19 13:03:24,342 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:24,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:24,342 INFO L85 PathProgramCache]: Analyzing trace with hash -590390434, now seen corresponding path program 20 times [2022-01-19 13:03:24,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:24,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002365118] [2022-01-19 13:03:24,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:24,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:24,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:24,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002365118] [2022-01-19 13:03:24,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002365118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:24,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:24,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:03:24,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488038999] [2022-01-19 13:03:24,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:24,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:03:24,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:24,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:03:24,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:03:24,440 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 13:03:24,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 210 transitions, 812 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:24,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:24,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 13:03:24,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:24,666 INFO L129 PetriNetUnfolder]: 66/586 cut-off events. [2022-01-19 13:03:24,667 INFO L130 PetriNetUnfolder]: For 820/823 co-relation queries the response was YES. [2022-01-19 13:03:24,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 586 events. 66/586 cut-off events. For 820/823 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3388 event pairs, 33 based on Foata normal form. 1/552 useless extension candidates. Maximal degree in co-relation 1285. Up to 101 conditions per place. [2022-01-19 13:03:24,672 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 29 selfloop transitions, 0 changer transitions 41/220 dead transitions. [2022-01-19 13:03:24,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 220 transitions, 991 flow [2022-01-19 13:03:24,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:03:24,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:03:24,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3069 transitions. [2022-01-19 13:03:24,673 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8119047619047619 [2022-01-19 13:03:24,673 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3069 transitions. [2022-01-19 13:03:24,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3069 transitions. [2022-01-19 13:03:24,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:24,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3069 transitions. [2022-01-19 13:03:24,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.5) internal successors, (3069), 18 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:24,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:24,677 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:24,677 INFO L186 Difference]: Start difference. First operand has 278 places, 210 transitions, 812 flow. Second operand 18 states and 3069 transitions. [2022-01-19 13:03:24,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 220 transitions, 991 flow [2022-01-19 13:03:24,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 220 transitions, 914 flow, removed 16 selfloop flow, removed 17 redundant places. [2022-01-19 13:03:24,683 INFO L242 Difference]: Finished difference. Result has 265 places, 179 transitions, 472 flow [2022-01-19 13:03:24,683 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=472, PETRI_PLACES=265, PETRI_TRANSITIONS=179} [2022-01-19 13:03:24,683 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 78 predicate places. [2022-01-19 13:03:24,683 INFO L470 AbstractCegarLoop]: Abstraction has has 265 places, 179 transitions, 472 flow [2022-01-19 13:03:24,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:24,684 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:24,684 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:24,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-19 13:03:24,684 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:24,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:24,684 INFO L85 PathProgramCache]: Analyzing trace with hash 470272266, now seen corresponding path program 1 times [2022-01-19 13:03:24,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:24,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439354925] [2022-01-19 13:03:24,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:24,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:24,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:24,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439354925] [2022-01-19 13:03:24,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439354925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:24,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:24,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:24,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872246078] [2022-01-19 13:03:24,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:24,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:24,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:24,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:24,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:24,821 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:24,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 179 transitions, 472 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:24,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:24,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:24,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:25,404 INFO L129 PetriNetUnfolder]: 336/1137 cut-off events. [2022-01-19 13:03:25,404 INFO L130 PetriNetUnfolder]: For 2119/2120 co-relation queries the response was YES. [2022-01-19 13:03:25,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2965 conditions, 1137 events. 336/1137 cut-off events. For 2119/2120 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7293 event pairs, 109 based on Foata normal form. 1/1077 useless extension candidates. Maximal degree in co-relation 2915. Up to 309 conditions per place. [2022-01-19 13:03:25,412 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 102 selfloop transitions, 30 changer transitions 43/312 dead transitions. [2022-01-19 13:03:25,412 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 312 transitions, 1656 flow [2022-01-19 13:03:25,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:03:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:03:25,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4659 transitions. [2022-01-19 13:03:25,414 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765024630541872 [2022-01-19 13:03:25,414 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4659 transitions. [2022-01-19 13:03:25,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4659 transitions. [2022-01-19 13:03:25,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:25,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4659 transitions. [2022-01-19 13:03:25,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6551724137931) internal successors, (4659), 29 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:25,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:25,421 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:25,421 INFO L186 Difference]: Start difference. First operand has 265 places, 179 transitions, 472 flow. Second operand 29 states and 4659 transitions. [2022-01-19 13:03:25,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 312 transitions, 1656 flow [2022-01-19 13:03:25,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 312 transitions, 1502 flow, removed 77 selfloop flow, removed 11 redundant places. [2022-01-19 13:03:25,430 INFO L242 Difference]: Finished difference. Result has 259 places, 211 transitions, 826 flow [2022-01-19 13:03:25,430 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=826, PETRI_PLACES=259, PETRI_TRANSITIONS=211} [2022-01-19 13:03:25,431 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 72 predicate places. [2022-01-19 13:03:25,431 INFO L470 AbstractCegarLoop]: Abstraction has has 259 places, 211 transitions, 826 flow [2022-01-19 13:03:25,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:25,431 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:25,431 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:25,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-19 13:03:25,432 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:25,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:25,432 INFO L85 PathProgramCache]: Analyzing trace with hash 238501890, now seen corresponding path program 2 times [2022-01-19 13:03:25,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:25,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973887978] [2022-01-19 13:03:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:25,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:25,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:25,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973887978] [2022-01-19 13:03:25,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973887978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:25,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:25,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:25,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011137245] [2022-01-19 13:03:25,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:25,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:25,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:25,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:25,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:25,565 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:25,566 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 211 transitions, 826 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:25,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:25,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:25,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:26,148 INFO L129 PetriNetUnfolder]: 521/1512 cut-off events. [2022-01-19 13:03:26,149 INFO L130 PetriNetUnfolder]: For 5285/5285 co-relation queries the response was YES. [2022-01-19 13:03:26,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5360 conditions, 1512 events. 521/1512 cut-off events. For 5285/5285 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10267 event pairs, 172 based on Foata normal form. 1/1440 useless extension candidates. Maximal degree in co-relation 5300. Up to 503 conditions per place. [2022-01-19 13:03:26,160 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 137 selfloop transitions, 43 changer transitions 43/360 dead transitions. [2022-01-19 13:03:26,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 360 transitions, 2389 flow [2022-01-19 13:03:26,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 13:03:26,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 13:03:26,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4191 transitions. [2022-01-19 13:03:26,163 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7675824175824176 [2022-01-19 13:03:26,163 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4191 transitions. [2022-01-19 13:03:26,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4191 transitions. [2022-01-19 13:03:26,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:26,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4191 transitions. [2022-01-19 13:03:26,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 161.19230769230768) internal successors, (4191), 26 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:26,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:26,193 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:26,193 INFO L186 Difference]: Start difference. First operand has 259 places, 211 transitions, 826 flow. Second operand 26 states and 4191 transitions. [2022-01-19 13:03:26,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 360 transitions, 2389 flow [2022-01-19 13:03:26,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 360 transitions, 2014 flow, removed 182 selfloop flow, removed 13 redundant places. [2022-01-19 13:03:26,210 INFO L242 Difference]: Finished difference. Result has 280 places, 239 transitions, 1102 flow [2022-01-19 13:03:26,210 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1102, PETRI_PLACES=280, PETRI_TRANSITIONS=239} [2022-01-19 13:03:26,211 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 93 predicate places. [2022-01-19 13:03:26,211 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 239 transitions, 1102 flow [2022-01-19 13:03:26,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:26,211 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:26,211 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:26,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-19 13:03:26,212 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:26,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:26,212 INFO L85 PathProgramCache]: Analyzing trace with hash -750854726, now seen corresponding path program 3 times [2022-01-19 13:03:26,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:26,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650378472] [2022-01-19 13:03:26,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:26,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:26,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:26,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650378472] [2022-01-19 13:03:26,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650378472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:26,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:26,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:26,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168998980] [2022-01-19 13:03:26,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:26,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:26,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:26,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:26,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:26,335 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:26,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 239 transitions, 1102 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:26,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:26,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:26,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:27,327 INFO L129 PetriNetUnfolder]: 553/1727 cut-off events. [2022-01-19 13:03:27,327 INFO L130 PetriNetUnfolder]: For 7207/7207 co-relation queries the response was YES. [2022-01-19 13:03:27,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6575 conditions, 1727 events. 553/1727 cut-off events. For 7207/7207 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 12651 event pairs, 191 based on Foata normal form. 1/1657 useless extension candidates. Maximal degree in co-relation 6504. Up to 494 conditions per place. [2022-01-19 13:03:27,342 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 271 selfloop transitions, 29 changer transitions 94/531 dead transitions. [2022-01-19 13:03:27,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 531 transitions, 4332 flow [2022-01-19 13:03:27,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-19 13:03:27,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-01-19 13:03:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9250 transitions. [2022-01-19 13:03:27,346 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7594417077175698 [2022-01-19 13:03:27,346 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9250 transitions. [2022-01-19 13:03:27,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9250 transitions. [2022-01-19 13:03:27,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:27,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9250 transitions. [2022-01-19 13:03:27,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.48275862068965) internal successors, (9250), 58 states have internal predecessors, (9250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:27,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:27,358 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:27,358 INFO L186 Difference]: Start difference. First operand has 280 places, 239 transitions, 1102 flow. Second operand 58 states and 9250 transitions. [2022-01-19 13:03:27,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 531 transitions, 4332 flow [2022-01-19 13:03:27,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 531 transitions, 3980 flow, removed 175 selfloop flow, removed 11 redundant places. [2022-01-19 13:03:27,382 INFO L242 Difference]: Finished difference. Result has 366 places, 243 transitions, 1265 flow [2022-01-19 13:03:27,382 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1265, PETRI_PLACES=366, PETRI_TRANSITIONS=243} [2022-01-19 13:03:27,382 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 179 predicate places. [2022-01-19 13:03:27,383 INFO L470 AbstractCegarLoop]: Abstraction has has 366 places, 243 transitions, 1265 flow [2022-01-19 13:03:27,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:27,383 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:27,383 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:27,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-19 13:03:27,383 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:27,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:27,384 INFO L85 PathProgramCache]: Analyzing trace with hash 256393280, now seen corresponding path program 4 times [2022-01-19 13:03:27,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:27,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127419575] [2022-01-19 13:03:27,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:27,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:27,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:27,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127419575] [2022-01-19 13:03:27,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127419575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:27,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:27,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:27,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058558670] [2022-01-19 13:03:27,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:27,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:27,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:27,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:27,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:27,525 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:27,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 243 transitions, 1265 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:27,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:27,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:27,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:28,271 INFO L129 PetriNetUnfolder]: 583/1732 cut-off events. [2022-01-19 13:03:28,271 INFO L130 PetriNetUnfolder]: For 15135/15135 co-relation queries the response was YES. [2022-01-19 13:03:28,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8169 conditions, 1732 events. 583/1732 cut-off events. For 15135/15135 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 12341 event pairs, 202 based on Foata normal form. 1/1653 useless extension candidates. Maximal degree in co-relation 8057. Up to 548 conditions per place. [2022-01-19 13:03:28,289 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 181 selfloop transitions, 38 changer transitions 44/400 dead transitions. [2022-01-19 13:03:28,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 400 transitions, 3587 flow [2022-01-19 13:03:28,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 13:03:28,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 13:03:28,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4354 transitions. [2022-01-19 13:03:28,291 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7679012345679013 [2022-01-19 13:03:28,291 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4354 transitions. [2022-01-19 13:03:28,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4354 transitions. [2022-01-19 13:03:28,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:28,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4354 transitions. [2022-01-19 13:03:28,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 161.25925925925927) internal successors, (4354), 27 states have internal predecessors, (4354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:28,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:28,297 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:28,297 INFO L186 Difference]: Start difference. First operand has 366 places, 243 transitions, 1265 flow. Second operand 27 states and 4354 transitions. [2022-01-19 13:03:28,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 400 transitions, 3587 flow [2022-01-19 13:03:28,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 400 transitions, 3296 flow, removed 143 selfloop flow, removed 40 redundant places. [2022-01-19 13:03:28,338 INFO L242 Difference]: Finished difference. Result has 325 places, 267 transitions, 1629 flow [2022-01-19 13:03:28,338 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1629, PETRI_PLACES=325, PETRI_TRANSITIONS=267} [2022-01-19 13:03:28,338 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 138 predicate places. [2022-01-19 13:03:28,338 INFO L470 AbstractCegarLoop]: Abstraction has has 325 places, 267 transitions, 1629 flow [2022-01-19 13:03:28,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:28,339 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:28,339 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:28,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-19 13:03:28,339 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:28,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:28,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1779093400, now seen corresponding path program 1 times [2022-01-19 13:03:28,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:28,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305848417] [2022-01-19 13:03:28,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:28,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:28,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:28,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:28,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305848417] [2022-01-19 13:03:28,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305848417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:28,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:28,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:03:28,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428978559] [2022-01-19 13:03:28,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:28,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:03:28,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:28,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:03:28,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:03:28,366 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 13:03:28,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 267 transitions, 1629 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:28,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:28,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 13:03:28,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:28,590 INFO L129 PetriNetUnfolder]: 258/1465 cut-off events. [2022-01-19 13:03:28,590 INFO L130 PetriNetUnfolder]: For 9685/9778 co-relation queries the response was YES. [2022-01-19 13:03:28,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 1465 events. 258/1465 cut-off events. For 9685/9778 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 10711 event pairs, 107 based on Foata normal form. 6/1389 useless extension candidates. Maximal degree in co-relation 5305. Up to 118 conditions per place. [2022-01-19 13:03:28,604 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 15 selfloop transitions, 3 changer transitions 0/273 dead transitions. [2022-01-19 13:03:28,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 273 transitions, 1680 flow [2022-01-19 13:03:28,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:03:28,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:03:28,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 13:03:28,605 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 13:03:28,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 13:03:28,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 13:03:28,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:28,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 13:03:28,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:28,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:28,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:28,607 INFO L186 Difference]: Start difference. First operand has 325 places, 267 transitions, 1629 flow. Second operand 3 states and 591 transitions. [2022-01-19 13:03:28,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 273 transitions, 1680 flow [2022-01-19 13:03:28,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 273 transitions, 1545 flow, removed 57 selfloop flow, removed 17 redundant places. [2022-01-19 13:03:28,634 INFO L242 Difference]: Finished difference. Result has 300 places, 270 transitions, 1524 flow [2022-01-19 13:03:28,635 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1524, PETRI_PLACES=300, PETRI_TRANSITIONS=270} [2022-01-19 13:03:28,635 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 113 predicate places. [2022-01-19 13:03:28,635 INFO L470 AbstractCegarLoop]: Abstraction has has 300 places, 270 transitions, 1524 flow [2022-01-19 13:03:28,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:28,635 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:28,635 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:28,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-19 13:03:28,636 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:28,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:28,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1934595890, now seen corresponding path program 5 times [2022-01-19 13:03:28,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:28,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150377386] [2022-01-19 13:03:28,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:28,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:28,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:28,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150377386] [2022-01-19 13:03:28,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150377386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:28,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:28,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:28,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140379498] [2022-01-19 13:03:28,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:28,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:28,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:28,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:28,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:28,789 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:28,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 270 transitions, 1524 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:28,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:28,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:28,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:29,967 INFO L129 PetriNetUnfolder]: 964/2916 cut-off events. [2022-01-19 13:03:29,967 INFO L130 PetriNetUnfolder]: For 19450/19450 co-relation queries the response was YES. [2022-01-19 13:03:29,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12742 conditions, 2916 events. 964/2916 cut-off events. For 19450/19450 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 22377 event pairs, 402 based on Foata normal form. 1/2797 useless extension candidates. Maximal degree in co-relation 12662. Up to 1086 conditions per place. [2022-01-19 13:03:29,994 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 207 selfloop transitions, 43 changer transitions 84/474 dead transitions. [2022-01-19 13:03:29,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 474 transitions, 4619 flow [2022-01-19 13:03:29,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-19 13:03:29,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-01-19 13:03:29,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7971 transitions. [2022-01-19 13:03:29,998 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7591428571428571 [2022-01-19 13:03:29,998 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7971 transitions. [2022-01-19 13:03:29,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7971 transitions. [2022-01-19 13:03:29,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:29,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7971 transitions. [2022-01-19 13:03:30,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.42) internal successors, (7971), 50 states have internal predecessors, (7971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:30,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:30,010 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:30,010 INFO L186 Difference]: Start difference. First operand has 300 places, 270 transitions, 1524 flow. Second operand 50 states and 7971 transitions. [2022-01-19 13:03:30,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 474 transitions, 4619 flow [2022-01-19 13:03:30,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 474 transitions, 4616 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 13:03:30,066 INFO L242 Difference]: Finished difference. Result has 395 places, 289 transitions, 2040 flow [2022-01-19 13:03:30,067 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=2040, PETRI_PLACES=395, PETRI_TRANSITIONS=289} [2022-01-19 13:03:30,067 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 208 predicate places. [2022-01-19 13:03:30,067 INFO L470 AbstractCegarLoop]: Abstraction has has 395 places, 289 transitions, 2040 flow [2022-01-19 13:03:30,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:30,067 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:30,068 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:30,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-19 13:03:30,068 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:30,068 INFO L85 PathProgramCache]: Analyzing trace with hash 268855270, now seen corresponding path program 1 times [2022-01-19 13:03:30,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:30,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648848929] [2022-01-19 13:03:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:30,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:30,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:30,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648848929] [2022-01-19 13:03:30,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648848929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:30,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:30,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:03:30,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932695043] [2022-01-19 13:03:30,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:30,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:03:30,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:30,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:03:30,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:03:30,088 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 13:03:30,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 289 transitions, 2040 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:30,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:30,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 13:03:30,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:30,346 INFO L129 PetriNetUnfolder]: 254/1361 cut-off events. [2022-01-19 13:03:30,347 INFO L130 PetriNetUnfolder]: For 17416/17554 co-relation queries the response was YES. [2022-01-19 13:03:30,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6245 conditions, 1361 events. 254/1361 cut-off events. For 17416/17554 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9284 event pairs, 100 based on Foata normal form. 9/1307 useless extension candidates. Maximal degree in co-relation 6118. Up to 106 conditions per place. [2022-01-19 13:03:30,367 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 16 selfloop transitions, 5 changer transitions 0/295 dead transitions. [2022-01-19 13:03:30,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 295 transitions, 2103 flow [2022-01-19 13:03:30,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:03:30,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:03:30,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 13:03:30,369 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 13:03:30,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 13:03:30,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 13:03:30,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:30,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 13:03:30,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:30,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:30,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:30,370 INFO L186 Difference]: Start difference. First operand has 395 places, 289 transitions, 2040 flow. Second operand 3 states and 591 transitions. [2022-01-19 13:03:30,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 295 transitions, 2103 flow [2022-01-19 13:03:30,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 295 transitions, 1990 flow, removed 50 selfloop flow, removed 24 redundant places. [2022-01-19 13:03:30,435 INFO L242 Difference]: Finished difference. Result has 337 places, 292 transitions, 1971 flow [2022-01-19 13:03:30,436 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1971, PETRI_PLACES=337, PETRI_TRANSITIONS=292} [2022-01-19 13:03:30,436 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 150 predicate places. [2022-01-19 13:03:30,436 INFO L470 AbstractCegarLoop]: Abstraction has has 337 places, 292 transitions, 1971 flow [2022-01-19 13:03:30,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:30,436 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:30,436 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:30,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-19 13:03:30,437 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:30,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:30,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1698434106, now seen corresponding path program 6 times [2022-01-19 13:03:30,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:30,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625662972] [2022-01-19 13:03:30,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:30,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:30,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:30,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625662972] [2022-01-19 13:03:30,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625662972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:30,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:30,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:30,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008504976] [2022-01-19 13:03:30,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:30,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:30,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:30,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:30,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:30,577 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:30,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 292 transitions, 1971 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:30,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:30,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:30,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:31,893 INFO L129 PetriNetUnfolder]: 787/2591 cut-off events. [2022-01-19 13:03:31,893 INFO L130 PetriNetUnfolder]: For 30444/30466 co-relation queries the response was YES. [2022-01-19 13:03:31,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13366 conditions, 2591 events. 787/2591 cut-off events. For 30444/30466 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 19430 event pairs, 367 based on Foata normal form. 4/2507 useless extension candidates. Maximal degree in co-relation 13261. Up to 841 conditions per place. [2022-01-19 13:03:31,927 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 217 selfloop transitions, 40 changer transitions 84/484 dead transitions. [2022-01-19 13:03:31,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 484 transitions, 5777 flow [2022-01-19 13:03:31,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-19 13:03:31,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-01-19 13:03:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8287 transitions. [2022-01-19 13:03:31,932 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7588827838827839 [2022-01-19 13:03:31,932 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8287 transitions. [2022-01-19 13:03:31,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8287 transitions. [2022-01-19 13:03:31,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:31,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8287 transitions. [2022-01-19 13:03:31,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.3653846153846) internal successors, (8287), 52 states have internal predecessors, (8287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:31,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:31,944 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:31,944 INFO L186 Difference]: Start difference. First operand has 337 places, 292 transitions, 1971 flow. Second operand 52 states and 8287 transitions. [2022-01-19 13:03:31,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 484 transitions, 5777 flow [2022-01-19 13:03:32,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 484 transitions, 5761 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-01-19 13:03:32,016 INFO L242 Difference]: Finished difference. Result has 430 places, 312 transitions, 2485 flow [2022-01-19 13:03:32,016 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2485, PETRI_PLACES=430, PETRI_TRANSITIONS=312} [2022-01-19 13:03:32,017 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 243 predicate places. [2022-01-19 13:03:32,017 INFO L470 AbstractCegarLoop]: Abstraction has has 430 places, 312 transitions, 2485 flow [2022-01-19 13:03:32,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:32,017 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:32,017 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:32,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-19 13:03:32,017 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:32,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:32,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1987803174, now seen corresponding path program 7 times [2022-01-19 13:03:32,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:32,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368494820] [2022-01-19 13:03:32,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:32,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:32,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:32,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368494820] [2022-01-19 13:03:32,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368494820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:32,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:32,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:32,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274647175] [2022-01-19 13:03:32,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:32,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:32,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:32,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:32,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:32,149 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:32,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 312 transitions, 2485 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:32,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:32,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:32,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:33,402 INFO L129 PetriNetUnfolder]: 798/2638 cut-off events. [2022-01-19 13:03:33,402 INFO L130 PetriNetUnfolder]: For 59883/59905 co-relation queries the response was YES. [2022-01-19 13:03:33,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16409 conditions, 2638 events. 798/2638 cut-off events. For 59883/59905 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 19934 event pairs, 424 based on Foata normal form. 1/2538 useless extension candidates. Maximal degree in co-relation 16260. Up to 871 conditions per place. [2022-01-19 13:03:33,436 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 225 selfloop transitions, 42 changer transitions 84/494 dead transitions. [2022-01-19 13:03:33,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 494 transitions, 7503 flow [2022-01-19 13:03:33,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-19 13:03:33,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-01-19 13:03:33,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8132 transitions. [2022-01-19 13:03:33,439 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592903828197946 [2022-01-19 13:03:33,439 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8132 transitions. [2022-01-19 13:03:33,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8132 transitions. [2022-01-19 13:03:33,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:33,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8132 transitions. [2022-01-19 13:03:33,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 159.45098039215685) internal successors, (8132), 51 states have internal predecessors, (8132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:33,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:33,449 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:33,449 INFO L186 Difference]: Start difference. First operand has 430 places, 312 transitions, 2485 flow. Second operand 51 states and 8132 transitions. [2022-01-19 13:03:33,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 494 transitions, 7503 flow [2022-01-19 13:03:33,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 494 transitions, 6335 flow, removed 584 selfloop flow, removed 35 redundant places. [2022-01-19 13:03:33,584 INFO L242 Difference]: Finished difference. Result has 452 places, 330 transitions, 2951 flow [2022-01-19 13:03:33,585 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=2951, PETRI_PLACES=452, PETRI_TRANSITIONS=330} [2022-01-19 13:03:33,585 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 265 predicate places. [2022-01-19 13:03:33,585 INFO L470 AbstractCegarLoop]: Abstraction has has 452 places, 330 transitions, 2951 flow [2022-01-19 13:03:33,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:33,585 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:33,585 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:33,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-19 13:03:33,585 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:33,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:33,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1981189114, now seen corresponding path program 8 times [2022-01-19 13:03:33,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:33,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315820019] [2022-01-19 13:03:33,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:33,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:33,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:33,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315820019] [2022-01-19 13:03:33,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315820019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:33,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:33,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:33,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73609772] [2022-01-19 13:03:33,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:33,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:33,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:33,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:33,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:33,719 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:33,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 330 transitions, 2951 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:33,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:33,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:33,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:35,039 INFO L129 PetriNetUnfolder]: 789/2620 cut-off events. [2022-01-19 13:03:35,039 INFO L130 PetriNetUnfolder]: For 62265/62287 co-relation queries the response was YES. [2022-01-19 13:03:35,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16651 conditions, 2620 events. 789/2620 cut-off events. For 62265/62287 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 19913 event pairs, 391 based on Foata normal form. 1/2518 useless extension candidates. Maximal degree in co-relation 16489. Up to 900 conditions per place. [2022-01-19 13:03:35,078 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 74 changer transitions 87/578 dead transitions. [2022-01-19 13:03:35,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 578 transitions, 9606 flow [2022-01-19 13:03:35,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-19 13:03:35,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-01-19 13:03:35,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7962 transitions. [2022-01-19 13:03:35,081 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7582857142857143 [2022-01-19 13:03:35,082 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7962 transitions. [2022-01-19 13:03:35,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7962 transitions. [2022-01-19 13:03:35,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:35,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7962 transitions. [2022-01-19 13:03:35,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.24) internal successors, (7962), 50 states have internal predecessors, (7962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:35,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:35,092 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:35,092 INFO L186 Difference]: Start difference. First operand has 452 places, 330 transitions, 2951 flow. Second operand 50 states and 7962 transitions. [2022-01-19 13:03:35,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 578 transitions, 9606 flow [2022-01-19 13:03:35,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 578 transitions, 8511 flow, removed 532 selfloop flow, removed 38 redundant places. [2022-01-19 13:03:35,295 INFO L242 Difference]: Finished difference. Result has 469 places, 360 transitions, 3861 flow [2022-01-19 13:03:35,295 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2757, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=3861, PETRI_PLACES=469, PETRI_TRANSITIONS=360} [2022-01-19 13:03:35,296 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 282 predicate places. [2022-01-19 13:03:35,296 INFO L470 AbstractCegarLoop]: Abstraction has has 469 places, 360 transitions, 3861 flow [2022-01-19 13:03:35,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:35,296 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:35,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:35,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-19 13:03:35,296 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:35,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:35,297 INFO L85 PathProgramCache]: Analyzing trace with hash 254084890, now seen corresponding path program 9 times [2022-01-19 13:03:35,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:35,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698351813] [2022-01-19 13:03:35,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:35,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:35,442 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 13:03:35,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:35,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698351813] [2022-01-19 13:03:35,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698351813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:35,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:35,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:35,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820817763] [2022-01-19 13:03:35,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:35,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:35,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:35,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:35,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:35,444 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:35,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 360 transitions, 3861 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:35,445 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:35,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:35,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:36,987 INFO L129 PetriNetUnfolder]: 840/2761 cut-off events. [2022-01-19 13:03:36,987 INFO L130 PetriNetUnfolder]: For 58838/58868 co-relation queries the response was YES. [2022-01-19 13:03:37,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17523 conditions, 2761 events. 840/2761 cut-off events. For 58838/58868 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 21386 event pairs, 331 based on Foata normal form. 13/2679 useless extension candidates. Maximal degree in co-relation 17353. Up to 898 conditions per place. [2022-01-19 13:03:37,034 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 270 selfloop transitions, 100 changer transitions 86/599 dead transitions. [2022-01-19 13:03:37,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 599 transitions, 9427 flow [2022-01-19 13:03:37,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-19 13:03:37,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-01-19 13:03:37,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 8596 transitions. [2022-01-19 13:03:37,038 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7580246913580246 [2022-01-19 13:03:37,038 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 8596 transitions. [2022-01-19 13:03:37,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 8596 transitions. [2022-01-19 13:03:37,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:37,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 8596 transitions. [2022-01-19 13:03:37,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 159.1851851851852) internal successors, (8596), 54 states have internal predecessors, (8596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:37,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:37,049 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:37,049 INFO L186 Difference]: Start difference. First operand has 469 places, 360 transitions, 3861 flow. Second operand 54 states and 8596 transitions. [2022-01-19 13:03:37,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 599 transitions, 9427 flow [2022-01-19 13:03:37,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 599 transitions, 8355 flow, removed 486 selfloop flow, removed 33 redundant places. [2022-01-19 13:03:37,275 INFO L242 Difference]: Finished difference. Result has 494 places, 383 transitions, 4122 flow [2022-01-19 13:03:37,276 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3365, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=4122, PETRI_PLACES=494, PETRI_TRANSITIONS=383} [2022-01-19 13:03:37,276 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 307 predicate places. [2022-01-19 13:03:37,276 INFO L470 AbstractCegarLoop]: Abstraction has has 494 places, 383 transitions, 4122 flow [2022-01-19 13:03:37,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:37,277 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:37,277 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:37,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-19 13:03:37,277 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:37,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:37,277 INFO L85 PathProgramCache]: Analyzing trace with hash -38496598, now seen corresponding path program 10 times [2022-01-19 13:03:37,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:37,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61434572] [2022-01-19 13:03:37,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:37,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:37,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:37,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:37,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61434572] [2022-01-19 13:03:37,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61434572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:37,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:37,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:37,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243334053] [2022-01-19 13:03:37,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:37,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:37,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:37,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:37,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:37,447 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:37,447 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 383 transitions, 4122 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:37,447 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:37,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:37,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:38,858 INFO L129 PetriNetUnfolder]: 835/2749 cut-off events. [2022-01-19 13:03:38,858 INFO L130 PetriNetUnfolder]: For 55420/55459 co-relation queries the response was YES. [2022-01-19 13:03:38,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17415 conditions, 2749 events. 835/2749 cut-off events. For 55420/55459 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21226 event pairs, 352 based on Foata normal form. 13/2662 useless extension candidates. Maximal degree in co-relation 17233. Up to 890 conditions per place. [2022-01-19 13:03:38,992 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 252 selfloop transitions, 94 changer transitions 87/576 dead transitions. [2022-01-19 13:03:38,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 576 transitions, 8826 flow [2022-01-19 13:03:38,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 13:03:38,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 13:03:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 8442 transitions. [2022-01-19 13:03:38,997 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7584905660377359 [2022-01-19 13:03:38,997 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 8442 transitions. [2022-01-19 13:03:38,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 8442 transitions. [2022-01-19 13:03:38,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:38,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 8442 transitions. [2022-01-19 13:03:39,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 159.28301886792454) internal successors, (8442), 53 states have internal predecessors, (8442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:39,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:39,011 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:39,011 INFO L186 Difference]: Start difference. First operand has 494 places, 383 transitions, 4122 flow. Second operand 53 states and 8442 transitions. [2022-01-19 13:03:39,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 576 transitions, 8826 flow [2022-01-19 13:03:39,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 576 transitions, 8197 flow, removed 293 selfloop flow, removed 43 redundant places. [2022-01-19 13:03:39,303 INFO L242 Difference]: Finished difference. Result has 504 places, 390 transitions, 4463 flow [2022-01-19 13:03:39,303 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3951, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=4463, PETRI_PLACES=504, PETRI_TRANSITIONS=390} [2022-01-19 13:03:39,304 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 317 predicate places. [2022-01-19 13:03:39,304 INFO L470 AbstractCegarLoop]: Abstraction has has 504 places, 390 transitions, 4463 flow [2022-01-19 13:03:39,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:39,304 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:39,304 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:39,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-19 13:03:39,304 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:39,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:39,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1573113274, now seen corresponding path program 11 times [2022-01-19 13:03:39,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:39,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164472400] [2022-01-19 13:03:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:39,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:39,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:39,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164472400] [2022-01-19 13:03:39,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164472400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:39,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:39,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:39,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159548838] [2022-01-19 13:03:39,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:39,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:39,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:39,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:39,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:39,446 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:39,447 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 390 transitions, 4463 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:39,447 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:39,447 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:39,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:40,805 INFO L129 PetriNetUnfolder]: 818/2661 cut-off events. [2022-01-19 13:03:40,805 INFO L130 PetriNetUnfolder]: For 54849/54891 co-relation queries the response was YES. [2022-01-19 13:03:40,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17117 conditions, 2661 events. 818/2661 cut-off events. For 54849/54891 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20252 event pairs, 349 based on Foata normal form. 13/2570 useless extension candidates. Maximal degree in co-relation 16934. Up to 920 conditions per place. [2022-01-19 13:03:40,846 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 239 selfloop transitions, 101 changer transitions 65/548 dead transitions. [2022-01-19 13:03:40,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 548 transitions, 8380 flow [2022-01-19 13:03:40,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-19 13:03:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-01-19 13:03:40,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5442 transitions. [2022-01-19 13:03:40,850 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621848739495798 [2022-01-19 13:03:40,850 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5442 transitions. [2022-01-19 13:03:40,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5442 transitions. [2022-01-19 13:03:40,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:40,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5442 transitions. [2022-01-19 13:03:40,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 160.05882352941177) internal successors, (5442), 34 states have internal predecessors, (5442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:40,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:40,857 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:40,857 INFO L186 Difference]: Start difference. First operand has 504 places, 390 transitions, 4463 flow. Second operand 34 states and 5442 transitions. [2022-01-19 13:03:40,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 548 transitions, 8380 flow [2022-01-19 13:03:41,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 548 transitions, 7727 flow, removed 280 selfloop flow, removed 39 redundant places. [2022-01-19 13:03:41,095 INFO L242 Difference]: Finished difference. Result has 476 places, 398 transitions, 4664 flow [2022-01-19 13:03:41,096 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4231, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4664, PETRI_PLACES=476, PETRI_TRANSITIONS=398} [2022-01-19 13:03:41,096 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 289 predicate places. [2022-01-19 13:03:41,096 INFO L470 AbstractCegarLoop]: Abstraction has has 476 places, 398 transitions, 4664 flow [2022-01-19 13:03:41,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:41,096 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:41,097 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:41,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-19 13:03:41,097 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:41,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:41,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2080920916, now seen corresponding path program 12 times [2022-01-19 13:03:41,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:41,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785466526] [2022-01-19 13:03:41,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:41,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:41,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:41,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785466526] [2022-01-19 13:03:41,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785466526] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:41,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:41,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:41,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814593678] [2022-01-19 13:03:41,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:41,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:41,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:41,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:41,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:41,237 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:41,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 398 transitions, 4664 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:41,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:41,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:41,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:42,716 INFO L129 PetriNetUnfolder]: 816/2636 cut-off events. [2022-01-19 13:03:42,716 INFO L130 PetriNetUnfolder]: For 49346/49379 co-relation queries the response was YES. [2022-01-19 13:03:42,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16751 conditions, 2636 events. 816/2636 cut-off events. For 49346/49379 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 20184 event pairs, 360 based on Foata normal form. 9/2539 useless extension candidates. Maximal degree in co-relation 16586. Up to 920 conditions per place. [2022-01-19 13:03:42,753 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 263 selfloop transitions, 110 changer transitions 78/594 dead transitions. [2022-01-19 13:03:42,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 594 transitions, 9738 flow [2022-01-19 13:03:42,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-19 13:03:42,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-01-19 13:03:42,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6702 transitions. [2022-01-19 13:03:42,756 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598639455782313 [2022-01-19 13:03:42,756 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6702 transitions. [2022-01-19 13:03:42,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6702 transitions. [2022-01-19 13:03:42,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:42,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6702 transitions. [2022-01-19 13:03:42,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 159.57142857142858) internal successors, (6702), 42 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:42,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:42,765 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:42,765 INFO L186 Difference]: Start difference. First operand has 476 places, 398 transitions, 4664 flow. Second operand 42 states and 6702 transitions. [2022-01-19 13:03:42,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 594 transitions, 9738 flow [2022-01-19 13:03:42,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 594 transitions, 9249 flow, removed 101 selfloop flow, removed 25 redundant places. [2022-01-19 13:03:42,965 INFO L242 Difference]: Finished difference. Result has 507 places, 425 transitions, 5523 flow [2022-01-19 13:03:42,966 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4380, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5523, PETRI_PLACES=507, PETRI_TRANSITIONS=425} [2022-01-19 13:03:42,966 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 320 predicate places. [2022-01-19 13:03:42,966 INFO L470 AbstractCegarLoop]: Abstraction has has 507 places, 425 transitions, 5523 flow [2022-01-19 13:03:42,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:42,966 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:42,967 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:42,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-19 13:03:42,967 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:42,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:42,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1464945574, now seen corresponding path program 13 times [2022-01-19 13:03:42,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:42,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101304848] [2022-01-19 13:03:42,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:42,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:43,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:43,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101304848] [2022-01-19 13:03:43,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101304848] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:43,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:43,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:43,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120873860] [2022-01-19 13:03:43,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:43,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:43,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:43,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:43,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:43,101 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:43,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 425 transitions, 5523 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:43,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:43,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:43,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:44,739 INFO L129 PetriNetUnfolder]: 811/2813 cut-off events. [2022-01-19 13:03:44,739 INFO L130 PetriNetUnfolder]: For 54173/54203 co-relation queries the response was YES. [2022-01-19 13:03:44,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17423 conditions, 2813 events. 811/2813 cut-off events. For 54173/54203 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 21827 event pairs, 274 based on Foata normal form. 1/2736 useless extension candidates. Maximal degree in co-relation 17242. Up to 706 conditions per place. [2022-01-19 13:03:44,780 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 437 selfloop transitions, 108 changer transitions 108/794 dead transitions. [2022-01-19 13:03:44,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 794 transitions, 13148 flow [2022-01-19 13:03:44,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-19 13:03:44,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-01-19 13:03:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9236 transitions. [2022-01-19 13:03:44,784 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7582922824302135 [2022-01-19 13:03:44,784 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9236 transitions. [2022-01-19 13:03:44,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9236 transitions. [2022-01-19 13:03:44,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:44,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9236 transitions. [2022-01-19 13:03:44,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.24137931034483) internal successors, (9236), 58 states have internal predecessors, (9236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:44,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:44,796 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:44,796 INFO L186 Difference]: Start difference. First operand has 507 places, 425 transitions, 5523 flow. Second operand 58 states and 9236 transitions. [2022-01-19 13:03:44,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 794 transitions, 13148 flow [2022-01-19 13:03:45,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 794 transitions, 12239 flow, removed 295 selfloop flow, removed 29 redundant places. [2022-01-19 13:03:45,090 INFO L242 Difference]: Finished difference. Result has 555 places, 425 transitions, 5484 flow [2022-01-19 13:03:45,091 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4954, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=5484, PETRI_PLACES=555, PETRI_TRANSITIONS=425} [2022-01-19 13:03:45,092 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 368 predicate places. [2022-01-19 13:03:45,092 INFO L470 AbstractCegarLoop]: Abstraction has has 555 places, 425 transitions, 5484 flow [2022-01-19 13:03:45,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:45,092 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:45,093 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:45,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-19 13:03:45,093 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:45,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:45,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2053203194, now seen corresponding path program 14 times [2022-01-19 13:03:45,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:45,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357589442] [2022-01-19 13:03:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:45,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:45,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:45,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:45,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357589442] [2022-01-19 13:03:45,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357589442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:45,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:45,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:45,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638885481] [2022-01-19 13:03:45,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:45,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:45,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:45,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:45,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:45,325 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:45,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 425 transitions, 5484 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:45,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:45,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:45,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:46,885 INFO L129 PetriNetUnfolder]: 803/2774 cut-off events. [2022-01-19 13:03:46,886 INFO L130 PetriNetUnfolder]: For 57037/57067 co-relation queries the response was YES. [2022-01-19 13:03:46,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18037 conditions, 2774 events. 803/2774 cut-off events. For 57037/57067 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 21413 event pairs, 341 based on Foata normal form. 13/2695 useless extension candidates. Maximal degree in co-relation 17833. Up to 936 conditions per place. [2022-01-19 13:03:46,933 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 303 selfloop transitions, 128 changer transitions 80/652 dead transitions. [2022-01-19 13:03:46,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 652 transitions, 11076 flow [2022-01-19 13:03:46,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 13:03:46,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 13:03:46,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7334 transitions. [2022-01-19 13:03:46,936 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592132505175984 [2022-01-19 13:03:46,936 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7334 transitions. [2022-01-19 13:03:46,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7334 transitions. [2022-01-19 13:03:46,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:46,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7334 transitions. [2022-01-19 13:03:46,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.43478260869566) internal successors, (7334), 46 states have internal predecessors, (7334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:46,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:46,948 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:46,948 INFO L186 Difference]: Start difference. First operand has 555 places, 425 transitions, 5484 flow. Second operand 46 states and 7334 transitions. [2022-01-19 13:03:46,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 652 transitions, 11076 flow [2022-01-19 13:03:47,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 652 transitions, 10613 flow, removed 76 selfloop flow, removed 51 redundant places. [2022-01-19 13:03:47,337 INFO L242 Difference]: Finished difference. Result has 533 places, 432 transitions, 5805 flow [2022-01-19 13:03:47,338 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5264, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=5805, PETRI_PLACES=533, PETRI_TRANSITIONS=432} [2022-01-19 13:03:47,338 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 346 predicate places. [2022-01-19 13:03:47,338 INFO L470 AbstractCegarLoop]: Abstraction has has 533 places, 432 transitions, 5805 flow [2022-01-19 13:03:47,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:47,338 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:47,339 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:47,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-19 13:03:47,339 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:47,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:47,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1175875342, now seen corresponding path program 15 times [2022-01-19 13:03:47,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:47,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98405128] [2022-01-19 13:03:47,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:47,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:47,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:47,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98405128] [2022-01-19 13:03:47,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98405128] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:47,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:47,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:47,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125535144] [2022-01-19 13:03:47,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:47,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:47,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:47,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:47,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:47,486 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:47,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 432 transitions, 5805 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:47,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:47,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:47,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:48,649 INFO L129 PetriNetUnfolder]: 799/2722 cut-off events. [2022-01-19 13:03:48,649 INFO L130 PetriNetUnfolder]: For 57567/57597 co-relation queries the response was YES. [2022-01-19 13:03:48,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18013 conditions, 2722 events. 799/2722 cut-off events. For 57567/57597 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20765 event pairs, 346 based on Foata normal form. 13/2640 useless extension candidates. Maximal degree in co-relation 17823. Up to 956 conditions per place. [2022-01-19 13:03:48,694 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 287 selfloop transitions, 138 changer transitions 59/625 dead transitions. [2022-01-19 13:03:48,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 625 transitions, 10713 flow [2022-01-19 13:03:48,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:03:48,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:03:48,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4811 transitions. [2022-01-19 13:03:48,697 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636507936507937 [2022-01-19 13:03:48,697 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4811 transitions. [2022-01-19 13:03:48,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4811 transitions. [2022-01-19 13:03:48,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:48,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4811 transitions. [2022-01-19 13:03:48,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.36666666666667) internal successors, (4811), 30 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:48,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:48,703 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:48,703 INFO L186 Difference]: Start difference. First operand has 533 places, 432 transitions, 5805 flow. Second operand 30 states and 4811 transitions. [2022-01-19 13:03:48,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 625 transitions, 10713 flow [2022-01-19 13:03:48,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 625 transitions, 10281 flow, removed 166 selfloop flow, removed 30 redundant places. [2022-01-19 13:03:48,976 INFO L242 Difference]: Finished difference. Result has 514 places, 449 transitions, 6384 flow [2022-01-19 13:03:48,976 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5628, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6384, PETRI_PLACES=514, PETRI_TRANSITIONS=449} [2022-01-19 13:03:48,977 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 327 predicate places. [2022-01-19 13:03:48,977 INFO L470 AbstractCegarLoop]: Abstraction has has 514 places, 449 transitions, 6384 flow [2022-01-19 13:03:48,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:48,977 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:48,977 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:48,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-19 13:03:48,977 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:48,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:48,977 INFO L85 PathProgramCache]: Analyzing trace with hash -200612388, now seen corresponding path program 16 times [2022-01-19 13:03:48,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:48,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954620389] [2022-01-19 13:03:48,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:48,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:49,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:49,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:49,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954620389] [2022-01-19 13:03:49,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954620389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:49,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:49,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:49,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475463695] [2022-01-19 13:03:49,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:49,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:49,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:49,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:49,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:49,105 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:49,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 449 transitions, 6384 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:49,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:49,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:49,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:50,481 INFO L129 PetriNetUnfolder]: 786/2795 cut-off events. [2022-01-19 13:03:50,481 INFO L130 PetriNetUnfolder]: For 57686/57723 co-relation queries the response was YES. [2022-01-19 13:03:50,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17847 conditions, 2795 events. 786/2795 cut-off events. For 57686/57723 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 21651 event pairs, 343 based on Foata normal form. 17/2720 useless extension candidates. Maximal degree in co-relation 17670. Up to 940 conditions per place. [2022-01-19 13:03:50,635 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 291 selfloop transitions, 127 changer transitions 70/629 dead transitions. [2022-01-19 13:03:50,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 629 transitions, 10852 flow [2022-01-19 13:03:50,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:03:50,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:03:50,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6067 transitions. [2022-01-19 13:03:50,638 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602756892230577 [2022-01-19 13:03:50,639 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6067 transitions. [2022-01-19 13:03:50,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6067 transitions. [2022-01-19 13:03:50,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:50,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6067 transitions. [2022-01-19 13:03:50,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.6578947368421) internal successors, (6067), 38 states have internal predecessors, (6067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:50,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:50,646 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:50,646 INFO L186 Difference]: Start difference. First operand has 514 places, 449 transitions, 6384 flow. Second operand 38 states and 6067 transitions. [2022-01-19 13:03:50,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 629 transitions, 10852 flow [2022-01-19 13:03:50,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 629 transitions, 10594 flow, removed 99 selfloop flow, removed 11 redundant places. [2022-01-19 13:03:50,918 INFO L242 Difference]: Finished difference. Result has 548 places, 444 transitions, 6472 flow [2022-01-19 13:03:50,919 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6227, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6472, PETRI_PLACES=548, PETRI_TRANSITIONS=444} [2022-01-19 13:03:50,919 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 361 predicate places. [2022-01-19 13:03:50,919 INFO L470 AbstractCegarLoop]: Abstraction has has 548 places, 444 transitions, 6472 flow [2022-01-19 13:03:50,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:50,920 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:50,920 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:50,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-19 13:03:50,920 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:50,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:50,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1043493350, now seen corresponding path program 17 times [2022-01-19 13:03:50,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:50,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174280867] [2022-01-19 13:03:50,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:50,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:51,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:51,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174280867] [2022-01-19 13:03:51,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174280867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:51,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:51,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:51,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673967135] [2022-01-19 13:03:51,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:51,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:51,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:51,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:51,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:51,064 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:51,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 444 transitions, 6472 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:51,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:51,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:51,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:52,147 INFO L129 PetriNetUnfolder]: 750/2595 cut-off events. [2022-01-19 13:03:52,147 INFO L130 PetriNetUnfolder]: For 57894/57924 co-relation queries the response was YES. [2022-01-19 13:03:52,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17213 conditions, 2595 events. 750/2595 cut-off events. For 57894/57924 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 19476 event pairs, 338 based on Foata normal form. 13/2517 useless extension candidates. Maximal degree in co-relation 17022. Up to 930 conditions per place. [2022-01-19 13:03:52,188 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 272 selfloop transitions, 96 changer transitions 62/571 dead transitions. [2022-01-19 13:03:52,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 571 transitions, 9638 flow [2022-01-19 13:03:52,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 13:03:52,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 13:03:52,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4169 transitions. [2022-01-19 13:03:52,197 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635531135531135 [2022-01-19 13:03:52,197 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4169 transitions. [2022-01-19 13:03:52,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4169 transitions. [2022-01-19 13:03:52,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:52,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4169 transitions. [2022-01-19 13:03:52,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 160.34615384615384) internal successors, (4169), 26 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:52,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:52,202 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:52,202 INFO L186 Difference]: Start difference. First operand has 548 places, 444 transitions, 6472 flow. Second operand 26 states and 4169 transitions. [2022-01-19 13:03:52,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 571 transitions, 9638 flow [2022-01-19 13:03:52,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 571 transitions, 9370 flow, removed 89 selfloop flow, removed 24 redundant places. [2022-01-19 13:03:52,509 INFO L242 Difference]: Finished difference. Result has 530 places, 396 transitions, 5372 flow [2022-01-19 13:03:52,510 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6276, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5372, PETRI_PLACES=530, PETRI_TRANSITIONS=396} [2022-01-19 13:03:52,510 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 343 predicate places. [2022-01-19 13:03:52,511 INFO L470 AbstractCegarLoop]: Abstraction has has 530 places, 396 transitions, 5372 flow [2022-01-19 13:03:52,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:52,511 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:52,511 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:52,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-19 13:03:52,511 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:52,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:52,511 INFO L85 PathProgramCache]: Analyzing trace with hash -602702176, now seen corresponding path program 18 times [2022-01-19 13:03:52,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:52,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665387633] [2022-01-19 13:03:52,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:52,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:52,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:52,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665387633] [2022-01-19 13:03:52,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665387633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:52,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:52,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:52,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539659873] [2022-01-19 13:03:52,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:52,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:52,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:52,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:52,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:52,653 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:52,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 396 transitions, 5372 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:52,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:52,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:52,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:53,779 INFO L129 PetriNetUnfolder]: 779/2772 cut-off events. [2022-01-19 13:03:53,779 INFO L130 PetriNetUnfolder]: For 63636/63664 co-relation queries the response was YES. [2022-01-19 13:03:53,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18192 conditions, 2772 events. 779/2772 cut-off events. For 63636/63664 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 21310 event pairs, 361 based on Foata normal form. 11/2685 useless extension candidates. Maximal degree in co-relation 18016. Up to 928 conditions per place. [2022-01-19 13:03:53,828 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 254 selfloop transitions, 111 changer transitions 68/574 dead transitions. [2022-01-19 13:03:53,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 574 transitions, 9980 flow [2022-01-19 13:03:53,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:03:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:03:53,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5918 transitions. [2022-01-19 13:03:53,831 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616473616473617 [2022-01-19 13:03:53,831 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5918 transitions. [2022-01-19 13:03:53,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5918 transitions. [2022-01-19 13:03:53,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:53,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5918 transitions. [2022-01-19 13:03:53,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.94594594594594) internal successors, (5918), 37 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:53,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:53,839 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:53,839 INFO L186 Difference]: Start difference. First operand has 530 places, 396 transitions, 5372 flow. Second operand 37 states and 5918 transitions. [2022-01-19 13:03:53,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 574 transitions, 9980 flow [2022-01-19 13:03:54,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 574 transitions, 8876 flow, removed 65 selfloop flow, removed 35 redundant places. [2022-01-19 13:03:54,299 INFO L242 Difference]: Finished difference. Result has 508 places, 415 transitions, 5380 flow [2022-01-19 13:03:54,299 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4638, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5380, PETRI_PLACES=508, PETRI_TRANSITIONS=415} [2022-01-19 13:03:54,299 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 321 predicate places. [2022-01-19 13:03:54,300 INFO L470 AbstractCegarLoop]: Abstraction has has 508 places, 415 transitions, 5380 flow [2022-01-19 13:03:54,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:54,300 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:54,300 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:54,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-19 13:03:54,300 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:54,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:54,301 INFO L85 PathProgramCache]: Analyzing trace with hash 297519288, now seen corresponding path program 19 times [2022-01-19 13:03:54,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:54,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325907791] [2022-01-19 13:03:54,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:54,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:54,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:54,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:54,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325907791] [2022-01-19 13:03:54,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325907791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:54,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:54,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:54,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655085421] [2022-01-19 13:03:54,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:54,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:54,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:54,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:54,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:54,453 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:54,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 415 transitions, 5380 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:54,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:54,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:54,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:55,980 INFO L129 PetriNetUnfolder]: 819/2902 cut-off events. [2022-01-19 13:03:55,980 INFO L130 PetriNetUnfolder]: For 61114/61142 co-relation queries the response was YES. [2022-01-19 13:03:56,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18501 conditions, 2902 events. 819/2902 cut-off events. For 61114/61142 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 22684 event pairs, 376 based on Foata normal form. 11/2815 useless extension candidates. Maximal degree in co-relation 18321. Up to 944 conditions per place. [2022-01-19 13:03:56,032 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 276 selfloop transitions, 124 changer transitions 79/620 dead transitions. [2022-01-19 13:03:56,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 620 transitions, 10595 flow [2022-01-19 13:03:56,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 13:03:56,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 13:03:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7340 transitions. [2022-01-19 13:03:56,037 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598343685300207 [2022-01-19 13:03:56,037 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7340 transitions. [2022-01-19 13:03:56,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7340 transitions. [2022-01-19 13:03:56,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:56,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7340 transitions. [2022-01-19 13:03:56,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.56521739130434) internal successors, (7340), 46 states have internal predecessors, (7340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:56,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:56,048 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:56,048 INFO L186 Difference]: Start difference. First operand has 508 places, 415 transitions, 5380 flow. Second operand 46 states and 7340 transitions. [2022-01-19 13:03:56,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 620 transitions, 10595 flow [2022-01-19 13:03:56,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 620 transitions, 10209 flow, removed 137 selfloop flow, removed 21 redundant places. [2022-01-19 13:03:56,425 INFO L242 Difference]: Finished difference. Result has 543 places, 440 transitions, 6086 flow [2022-01-19 13:03:56,425 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5202, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6086, PETRI_PLACES=543, PETRI_TRANSITIONS=440} [2022-01-19 13:03:56,425 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 356 predicate places. [2022-01-19 13:03:56,425 INFO L470 AbstractCegarLoop]: Abstraction has has 543 places, 440 transitions, 6086 flow [2022-01-19 13:03:56,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:56,426 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:56,426 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:56,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-19 13:03:56,426 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:56,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:56,426 INFO L85 PathProgramCache]: Analyzing trace with hash -193100770, now seen corresponding path program 20 times [2022-01-19 13:03:56,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:56,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56869884] [2022-01-19 13:03:56,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:56,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:56,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:56,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:56,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56869884] [2022-01-19 13:03:56,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56869884] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:56,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:56,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:56,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991963331] [2022-01-19 13:03:56,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:56,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:56,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:56,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:56,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:56,560 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:56,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 440 transitions, 6086 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:56,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:56,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:56,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:03:58,045 INFO L129 PetriNetUnfolder]: 813/2914 cut-off events. [2022-01-19 13:03:58,046 INFO L130 PetriNetUnfolder]: For 64230/64258 co-relation queries the response was YES. [2022-01-19 13:03:58,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18840 conditions, 2914 events. 813/2914 cut-off events. For 64230/64258 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 22924 event pairs, 377 based on Foata normal form. 11/2828 useless extension candidates. Maximal degree in co-relation 18643. Up to 924 conditions per place. [2022-01-19 13:03:58,115 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 127 changer transitions 80/621 dead transitions. [2022-01-19 13:03:58,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 621 transitions, 10926 flow [2022-01-19 13:03:58,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 13:03:58,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 13:03:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7180 transitions. [2022-01-19 13:03:58,120 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7597883597883598 [2022-01-19 13:03:58,120 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7180 transitions. [2022-01-19 13:03:58,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7180 transitions. [2022-01-19 13:03:58,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:03:58,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7180 transitions. [2022-01-19 13:03:58,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.55555555555554) internal successors, (7180), 45 states have internal predecessors, (7180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:58,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:58,132 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:58,132 INFO L186 Difference]: Start difference. First operand has 543 places, 440 transitions, 6086 flow. Second operand 45 states and 7180 transitions. [2022-01-19 13:03:58,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 621 transitions, 10926 flow [2022-01-19 13:03:58,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 621 transitions, 10558 flow, removed 152 selfloop flow, removed 29 redundant places. [2022-01-19 13:03:58,534 INFO L242 Difference]: Finished difference. Result has 559 places, 444 transitions, 6474 flow [2022-01-19 13:03:58,534 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5932, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=6474, PETRI_PLACES=559, PETRI_TRANSITIONS=444} [2022-01-19 13:03:58,534 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 372 predicate places. [2022-01-19 13:03:58,535 INFO L470 AbstractCegarLoop]: Abstraction has has 559 places, 444 transitions, 6474 flow [2022-01-19 13:03:58,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:58,535 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:03:58,535 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:03:58,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-19 13:03:58,535 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:03:58,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:03:58,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1361915772, now seen corresponding path program 21 times [2022-01-19 13:03:58,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:03:58,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706077301] [2022-01-19 13:03:58,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:03:58,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:03:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:03:58,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:03:58,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:03:58,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706077301] [2022-01-19 13:03:58,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706077301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:03:58,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:03:58,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:03:58,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25197408] [2022-01-19 13:03:58,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:03:58,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:03:58,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:03:58,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:03:58,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:03:58,676 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:03:58,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 444 transitions, 6474 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:03:58,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:03:58,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:03:58,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:00,195 INFO L129 PetriNetUnfolder]: 804/2847 cut-off events. [2022-01-19 13:04:00,195 INFO L130 PetriNetUnfolder]: For 64950/64978 co-relation queries the response was YES. [2022-01-19 13:04:00,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18857 conditions, 2847 events. 804/2847 cut-off events. For 64950/64978 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 22108 event pairs, 366 based on Foata normal form. 11/2760 useless extension candidates. Maximal degree in co-relation 18653. Up to 945 conditions per place. [2022-01-19 13:04:00,243 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 124 changer transitions 69/608 dead transitions. [2022-01-19 13:04:00,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 608 transitions, 10998 flow [2022-01-19 13:04:00,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:04:00,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:04:00,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6078 transitions. [2022-01-19 13:04:00,247 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616541353383459 [2022-01-19 13:04:00,247 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6078 transitions. [2022-01-19 13:04:00,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6078 transitions. [2022-01-19 13:04:00,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:00,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6078 transitions. [2022-01-19 13:04:00,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.94736842105263) internal successors, (6078), 38 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:00,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:00,257 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:00,257 INFO L186 Difference]: Start difference. First operand has 559 places, 444 transitions, 6474 flow. Second operand 38 states and 6078 transitions. [2022-01-19 13:04:00,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 608 transitions, 10998 flow [2022-01-19 13:04:00,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 608 transitions, 10536 flow, removed 155 selfloop flow, removed 33 redundant places. [2022-01-19 13:04:00,595 INFO L242 Difference]: Finished difference. Result has 554 places, 451 transitions, 6799 flow [2022-01-19 13:04:00,595 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6236, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6799, PETRI_PLACES=554, PETRI_TRANSITIONS=451} [2022-01-19 13:04:00,596 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 367 predicate places. [2022-01-19 13:04:00,596 INFO L470 AbstractCegarLoop]: Abstraction has has 554 places, 451 transitions, 6799 flow [2022-01-19 13:04:00,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:00,596 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:00,596 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:00,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-19 13:04:00,596 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:00,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:00,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1406673902, now seen corresponding path program 22 times [2022-01-19 13:04:00,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:00,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335671544] [2022-01-19 13:04:00,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:00,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:00,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:00,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335671544] [2022-01-19 13:04:00,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335671544] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:00,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:00,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:00,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179729406] [2022-01-19 13:04:00,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:00,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:00,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:00,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:00,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:00,740 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:00,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 451 transitions, 6799 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:00,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:00,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:00,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:02,078 INFO L129 PetriNetUnfolder]: 792/2734 cut-off events. [2022-01-19 13:04:02,079 INFO L130 PetriNetUnfolder]: For 63558/63588 co-relation queries the response was YES. [2022-01-19 13:04:02,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18524 conditions, 2734 events. 792/2734 cut-off events. For 63558/63588 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20948 event pairs, 368 based on Foata normal form. 13/2648 useless extension candidates. Maximal degree in co-relation 18326. Up to 950 conditions per place. [2022-01-19 13:04:02,135 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 267 selfloop transitions, 124 changer transitions 59/591 dead transitions. [2022-01-19 13:04:02,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 591 transitions, 10643 flow [2022-01-19 13:04:02,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:04:02,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:04:02,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-01-19 13:04:02,139 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-01-19 13:04:02,139 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-01-19 13:04:02,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-01-19 13:04:02,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:02,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-01-19 13:04:02,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:02,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:02,146 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:02,146 INFO L186 Difference]: Start difference. First operand has 554 places, 451 transitions, 6799 flow. Second operand 30 states and 4816 transitions. [2022-01-19 13:04:02,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 591 transitions, 10643 flow [2022-01-19 13:04:02,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 591 transitions, 10168 flow, removed 155 selfloop flow, removed 22 redundant places. [2022-01-19 13:04:02,595 INFO L242 Difference]: Finished difference. Result has 551 places, 456 transitions, 6961 flow [2022-01-19 13:04:02,596 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6528, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6961, PETRI_PLACES=551, PETRI_TRANSITIONS=456} [2022-01-19 13:04:02,596 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 364 predicate places. [2022-01-19 13:04:02,596 INFO L470 AbstractCegarLoop]: Abstraction has has 551 places, 456 transitions, 6961 flow [2022-01-19 13:04:02,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:02,596 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:02,596 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:02,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-19 13:04:02,597 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:02,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:02,597 INFO L85 PathProgramCache]: Analyzing trace with hash 773785554, now seen corresponding path program 23 times [2022-01-19 13:04:02,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:02,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194089752] [2022-01-19 13:04:02,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:02,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:02,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:02,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:02,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194089752] [2022-01-19 13:04:02,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194089752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:02,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:02,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:02,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123488464] [2022-01-19 13:04:02,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:02,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:02,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:02,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:02,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:02,734 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:02,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 456 transitions, 6961 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:02,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:02,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:02,736 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:04,019 INFO L129 PetriNetUnfolder]: 785/2722 cut-off events. [2022-01-19 13:04:04,019 INFO L130 PetriNetUnfolder]: For 60860/60890 co-relation queries the response was YES. [2022-01-19 13:04:04,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18238 conditions, 2722 events. 785/2722 cut-off events. For 60860/60890 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 20803 event pairs, 370 based on Foata normal form. 13/2636 useless extension candidates. Maximal degree in co-relation 18044. Up to 948 conditions per place. [2022-01-19 13:04:04,060 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 269 selfloop transitions, 127 changer transitions 59/596 dead transitions. [2022-01-19 13:04:04,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 596 transitions, 10737 flow [2022-01-19 13:04:04,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:04:04,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:04:04,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4814 transitions. [2022-01-19 13:04:04,063 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641269841269841 [2022-01-19 13:04:04,063 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4814 transitions. [2022-01-19 13:04:04,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4814 transitions. [2022-01-19 13:04:04,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:04,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4814 transitions. [2022-01-19 13:04:04,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.46666666666667) internal successors, (4814), 30 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:04,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:04,069 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:04,069 INFO L186 Difference]: Start difference. First operand has 551 places, 456 transitions, 6961 flow. Second operand 30 states and 4814 transitions. [2022-01-19 13:04:04,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 596 transitions, 10737 flow [2022-01-19 13:04:04,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 596 transitions, 10468 flow, removed 93 selfloop flow, removed 13 redundant places. [2022-01-19 13:04:04,384 INFO L242 Difference]: Finished difference. Result has 566 places, 461 transitions, 7221 flow [2022-01-19 13:04:04,385 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6780, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7221, PETRI_PLACES=566, PETRI_TRANSITIONS=461} [2022-01-19 13:04:04,385 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 379 predicate places. [2022-01-19 13:04:04,385 INFO L470 AbstractCegarLoop]: Abstraction has has 566 places, 461 transitions, 7221 flow [2022-01-19 13:04:04,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:04,385 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:04,386 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:04,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-19 13:04:04,386 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:04,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:04,386 INFO L85 PathProgramCache]: Analyzing trace with hash 476356618, now seen corresponding path program 24 times [2022-01-19 13:04:04,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:04,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137459593] [2022-01-19 13:04:04,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:04,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:04,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:04,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137459593] [2022-01-19 13:04:04,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137459593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:04,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:04,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:04,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362461383] [2022-01-19 13:04:04,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:04,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:04,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:04,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:04,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:04,520 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:04,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 461 transitions, 7221 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:04,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:04,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:04,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:05,750 INFO L129 PetriNetUnfolder]: 760/2723 cut-off events. [2022-01-19 13:04:05,750 INFO L130 PetriNetUnfolder]: For 61002/61030 co-relation queries the response was YES. [2022-01-19 13:04:05,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17750 conditions, 2723 events. 760/2723 cut-off events. For 61002/61030 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 20854 event pairs, 375 based on Foata normal form. 11/2635 useless extension candidates. Maximal degree in co-relation 17552. Up to 936 conditions per place. [2022-01-19 13:04:05,802 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 262 selfloop transitions, 95 changer transitions 62/560 dead transitions. [2022-01-19 13:04:05,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 560 transitions, 9882 flow [2022-01-19 13:04:05,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 13:04:05,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 13:04:05,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4333 transitions. [2022-01-19 13:04:05,805 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641975308641975 [2022-01-19 13:04:05,805 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4333 transitions. [2022-01-19 13:04:05,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4333 transitions. [2022-01-19 13:04:05,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:05,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4333 transitions. [2022-01-19 13:04:05,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.4814814814815) internal successors, (4333), 27 states have internal predecessors, (4333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:05,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:05,811 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:05,811 INFO L186 Difference]: Start difference. First operand has 566 places, 461 transitions, 7221 flow. Second operand 27 states and 4333 transitions. [2022-01-19 13:04:05,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 560 transitions, 9882 flow [2022-01-19 13:04:06,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 560 transitions, 9638 flow, removed 55 selfloop flow, removed 14 redundant places. [2022-01-19 13:04:06,270 INFO L242 Difference]: Finished difference. Result has 570 places, 424 transitions, 6311 flow [2022-01-19 13:04:06,271 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7012, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6311, PETRI_PLACES=570, PETRI_TRANSITIONS=424} [2022-01-19 13:04:06,271 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 383 predicate places. [2022-01-19 13:04:06,271 INFO L470 AbstractCegarLoop]: Abstraction has has 570 places, 424 transitions, 6311 flow [2022-01-19 13:04:06,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:06,271 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:06,271 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:06,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-19 13:04:06,272 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:06,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:06,272 INFO L85 PathProgramCache]: Analyzing trace with hash -118413066, now seen corresponding path program 25 times [2022-01-19 13:04:06,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:06,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127820534] [2022-01-19 13:04:06,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:06,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:06,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:06,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127820534] [2022-01-19 13:04:06,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127820534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:06,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:06,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:06,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369334156] [2022-01-19 13:04:06,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:06,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:06,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:06,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:06,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:06,393 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:06,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 424 transitions, 6311 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:06,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:06,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:06,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:07,709 INFO L129 PetriNetUnfolder]: 759/2666 cut-off events. [2022-01-19 13:04:07,709 INFO L130 PetriNetUnfolder]: For 61442/61472 co-relation queries the response was YES. [2022-01-19 13:04:07,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17706 conditions, 2666 events. 759/2666 cut-off events. For 61442/61472 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 20210 event pairs, 354 based on Foata normal form. 13/2587 useless extension candidates. Maximal degree in co-relation 17510. Up to 922 conditions per place. [2022-01-19 13:04:07,747 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 264 selfloop transitions, 105 changer transitions 71/581 dead transitions. [2022-01-19 13:04:07,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 581 transitions, 10534 flow [2022-01-19 13:04:07,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:04:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:04:07,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6075 transitions. [2022-01-19 13:04:07,750 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612781954887218 [2022-01-19 13:04:07,750 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6075 transitions. [2022-01-19 13:04:07,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6075 transitions. [2022-01-19 13:04:07,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:07,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6075 transitions. [2022-01-19 13:04:07,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.8684210526316) internal successors, (6075), 38 states have internal predecessors, (6075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:07,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:07,759 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:07,759 INFO L186 Difference]: Start difference. First operand has 570 places, 424 transitions, 6311 flow. Second operand 38 states and 6075 transitions. [2022-01-19 13:04:07,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 581 transitions, 10534 flow [2022-01-19 13:04:08,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 581 transitions, 9689 flow, removed 57 selfloop flow, removed 37 redundant places. [2022-01-19 13:04:08,062 INFO L242 Difference]: Finished difference. Result has 553 places, 428 transitions, 6117 flow [2022-01-19 13:04:08,063 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5691, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6117, PETRI_PLACES=553, PETRI_TRANSITIONS=428} [2022-01-19 13:04:08,063 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 366 predicate places. [2022-01-19 13:04:08,063 INFO L470 AbstractCegarLoop]: Abstraction has has 553 places, 428 transitions, 6117 flow [2022-01-19 13:04:08,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:08,063 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:08,063 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:08,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-19 13:04:08,063 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:08,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:08,064 INFO L85 PathProgramCache]: Analyzing trace with hash 106408980, now seen corresponding path program 26 times [2022-01-19 13:04:08,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:08,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884672343] [2022-01-19 13:04:08,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:08,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:08,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:08,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:08,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884672343] [2022-01-19 13:04:08,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884672343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:08,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:08,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:08,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777300225] [2022-01-19 13:04:08,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:08,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:08,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:08,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:08,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:08,205 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:08,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 428 transitions, 6117 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:08,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:08,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:08,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:09,337 INFO L129 PetriNetUnfolder]: 749/2624 cut-off events. [2022-01-19 13:04:09,337 INFO L130 PetriNetUnfolder]: For 55718/55748 co-relation queries the response was YES. [2022-01-19 13:04:09,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16946 conditions, 2624 events. 749/2624 cut-off events. For 55718/55748 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 19828 event pairs, 359 based on Foata normal form. 13/2541 useless extension candidates. Maximal degree in co-relation 16749. Up to 928 conditions per place. [2022-01-19 13:04:09,398 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 105 changer transitions 60/563 dead transitions. [2022-01-19 13:04:09,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 563 transitions, 9714 flow [2022-01-19 13:04:09,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:04:09,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:04:09,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4813 transitions. [2022-01-19 13:04:09,401 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763968253968254 [2022-01-19 13:04:09,401 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4813 transitions. [2022-01-19 13:04:09,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4813 transitions. [2022-01-19 13:04:09,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:09,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4813 transitions. [2022-01-19 13:04:09,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:09,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:09,407 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:09,407 INFO L186 Difference]: Start difference. First operand has 553 places, 428 transitions, 6117 flow. Second operand 30 states and 4813 transitions. [2022-01-19 13:04:09,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 563 transitions, 9714 flow [2022-01-19 13:04:09,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 563 transitions, 9359 flow, removed 125 selfloop flow, removed 21 redundant places. [2022-01-19 13:04:09,718 INFO L242 Difference]: Finished difference. Result has 548 places, 430 transitions, 6217 flow [2022-01-19 13:04:09,718 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5923, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6217, PETRI_PLACES=548, PETRI_TRANSITIONS=430} [2022-01-19 13:04:09,719 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 361 predicate places. [2022-01-19 13:04:09,719 INFO L470 AbstractCegarLoop]: Abstraction has has 548 places, 430 transitions, 6217 flow [2022-01-19 13:04:09,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:09,719 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:09,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:09,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-19 13:04:09,720 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:09,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:09,720 INFO L85 PathProgramCache]: Analyzing trace with hash -837207342, now seen corresponding path program 27 times [2022-01-19 13:04:09,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:09,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077927658] [2022-01-19 13:04:09,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:09,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:09,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:09,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077927658] [2022-01-19 13:04:09,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077927658] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:09,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:09,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:09,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960726037] [2022-01-19 13:04:09,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:09,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:09,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:09,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:09,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:09,851 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:09,852 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 430 transitions, 6217 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:09,852 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:09,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:09,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:10,910 INFO L129 PetriNetUnfolder]: 740/2597 cut-off events. [2022-01-19 13:04:10,910 INFO L130 PetriNetUnfolder]: For 53562/53592 co-relation queries the response was YES. [2022-01-19 13:04:10,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16677 conditions, 2597 events. 740/2597 cut-off events. For 53562/53592 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 19592 event pairs, 361 based on Foata normal form. 13/2515 useless extension candidates. Maximal degree in co-relation 16487. Up to 926 conditions per place. [2022-01-19 13:04:10,952 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 255 selfloop transitions, 93 changer transitions 59/548 dead transitions. [2022-01-19 13:04:10,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 548 transitions, 9257 flow [2022-01-19 13:04:10,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:04:10,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:04:10,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4648 transitions. [2022-01-19 13:04:10,954 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2022-01-19 13:04:10,954 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4648 transitions. [2022-01-19 13:04:10,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4648 transitions. [2022-01-19 13:04:10,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:10,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4648 transitions. [2022-01-19 13:04:10,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.27586206896552) internal successors, (4648), 29 states have internal predecessors, (4648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:10,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:10,960 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:10,960 INFO L186 Difference]: Start difference. First operand has 548 places, 430 transitions, 6217 flow. Second operand 29 states and 4648 transitions. [2022-01-19 13:04:10,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 548 transitions, 9257 flow [2022-01-19 13:04:11,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 548 transitions, 8963 flow, removed 64 selfloop flow, removed 16 redundant places. [2022-01-19 13:04:11,240 INFO L242 Difference]: Finished difference. Result has 556 places, 417 transitions, 5872 flow [2022-01-19 13:04:11,240 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5984, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5872, PETRI_PLACES=556, PETRI_TRANSITIONS=417} [2022-01-19 13:04:11,240 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 369 predicate places. [2022-01-19 13:04:11,240 INFO L470 AbstractCegarLoop]: Abstraction has has 556 places, 417 transitions, 5872 flow [2022-01-19 13:04:11,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:11,241 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:11,241 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:11,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-19 13:04:11,241 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:11,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:11,241 INFO L85 PathProgramCache]: Analyzing trace with hash 714491584, now seen corresponding path program 28 times [2022-01-19 13:04:11,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:11,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490687792] [2022-01-19 13:04:11,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:11,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:11,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:11,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:11,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490687792] [2022-01-19 13:04:11,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490687792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:11,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:11,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:11,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785486931] [2022-01-19 13:04:11,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:11,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:11,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:11,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:11,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:11,376 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:11,377 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 417 transitions, 5872 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:11,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:11,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:11,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:12,376 INFO L129 PetriNetUnfolder]: 722/2536 cut-off events. [2022-01-19 13:04:12,376 INFO L130 PetriNetUnfolder]: For 52625/52655 co-relation queries the response was YES. [2022-01-19 13:04:12,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16235 conditions, 2536 events. 722/2536 cut-off events. For 52625/52655 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 18911 event pairs, 358 based on Foata normal form. 13/2454 useless extension candidates. Maximal degree in co-relation 16044. Up to 916 conditions per place. [2022-01-19 13:04:12,416 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 242 selfloop transitions, 80 changer transitions 61/524 dead transitions. [2022-01-19 13:04:12,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 524 transitions, 8586 flow [2022-01-19 13:04:12,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:04:12,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:04:12,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4488 transitions. [2022-01-19 13:04:12,419 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763265306122449 [2022-01-19 13:04:12,419 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4488 transitions. [2022-01-19 13:04:12,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4488 transitions. [2022-01-19 13:04:12,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:12,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4488 transitions. [2022-01-19 13:04:12,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.28571428571428) internal successors, (4488), 28 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:12,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:12,424 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:12,424 INFO L186 Difference]: Start difference. First operand has 556 places, 417 transitions, 5872 flow. Second operand 28 states and 4488 transitions. [2022-01-19 13:04:12,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 524 transitions, 8586 flow [2022-01-19 13:04:12,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 524 transitions, 8104 flow, removed 33 selfloop flow, removed 31 redundant places. [2022-01-19 13:04:12,696 INFO L242 Difference]: Finished difference. Result has 535 places, 392 transitions, 5065 flow [2022-01-19 13:04:12,697 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5468, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=5065, PETRI_PLACES=535, PETRI_TRANSITIONS=392} [2022-01-19 13:04:12,697 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 348 predicate places. [2022-01-19 13:04:12,697 INFO L470 AbstractCegarLoop]: Abstraction has has 535 places, 392 transitions, 5065 flow [2022-01-19 13:04:12,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:12,698 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:12,698 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:12,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-19 13:04:12,698 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:12,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:12,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1693959950, now seen corresponding path program 29 times [2022-01-19 13:04:12,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:12,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817490227] [2022-01-19 13:04:12,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:12,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:12,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:12,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817490227] [2022-01-19 13:04:12,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817490227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:12,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:12,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:12,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495172641] [2022-01-19 13:04:12,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:12,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:12,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:12,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:12,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:12,841 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:12,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 392 transitions, 5065 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:12,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:12,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:12,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:13,928 INFO L129 PetriNetUnfolder]: 691/2512 cut-off events. [2022-01-19 13:04:13,929 INFO L130 PetriNetUnfolder]: For 48483/48511 co-relation queries the response was YES. [2022-01-19 13:04:13,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15126 conditions, 2512 events. 691/2512 cut-off events. For 48483/48511 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 18663 event pairs, 352 based on Foata normal form. 11/2429 useless extension candidates. Maximal degree in co-relation 14942. Up to 898 conditions per place. [2022-01-19 13:04:13,970 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 216 selfloop transitions, 55 changer transitions 63/475 dead transitions. [2022-01-19 13:04:13,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 475 transitions, 7119 flow [2022-01-19 13:04:13,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:04:13,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:04:13,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4784 transitions. [2022-01-19 13:04:13,973 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593650793650794 [2022-01-19 13:04:13,973 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4784 transitions. [2022-01-19 13:04:13,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4784 transitions. [2022-01-19 13:04:13,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:13,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4784 transitions. [2022-01-19 13:04:13,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.46666666666667) internal successors, (4784), 30 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:13,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:13,979 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:13,979 INFO L186 Difference]: Start difference. First operand has 535 places, 392 transitions, 5065 flow. Second operand 30 states and 4784 transitions. [2022-01-19 13:04:13,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 475 transitions, 7119 flow [2022-01-19 13:04:14,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 475 transitions, 6675 flow, removed 30 selfloop flow, removed 34 redundant places. [2022-01-19 13:04:14,196 INFO L242 Difference]: Finished difference. Result has 502 places, 341 transitions, 3736 flow [2022-01-19 13:04:14,197 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4653, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3736, PETRI_PLACES=502, PETRI_TRANSITIONS=341} [2022-01-19 13:04:14,197 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 315 predicate places. [2022-01-19 13:04:14,197 INFO L470 AbstractCegarLoop]: Abstraction has has 502 places, 341 transitions, 3736 flow [2022-01-19 13:04:14,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:14,198 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:14,198 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:14,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-19 13:04:14,198 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:14,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:14,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1689709140, now seen corresponding path program 30 times [2022-01-19 13:04:14,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:14,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790011700] [2022-01-19 13:04:14,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:14,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:14,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:14,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790011700] [2022-01-19 13:04:14,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790011700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:14,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:14,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:14,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864135070] [2022-01-19 13:04:14,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:14,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:14,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:14,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:14,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:14,344 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:14,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 341 transitions, 3736 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:14,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:14,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:14,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:15,550 INFO L129 PetriNetUnfolder]: 715/2503 cut-off events. [2022-01-19 13:04:15,551 INFO L130 PetriNetUnfolder]: For 46874/46898 co-relation queries the response was YES. [2022-01-19 13:04:15,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15320 conditions, 2503 events. 715/2503 cut-off events. For 46874/46898 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 18503 event pairs, 370 based on Foata normal form. 7/2416 useless extension candidates. Maximal degree in co-relation 15150. Up to 898 conditions per place. [2022-01-19 13:04:15,601 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 213 selfloop transitions, 71 changer transitions 62/487 dead transitions. [2022-01-19 13:04:15,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 487 transitions, 7449 flow [2022-01-19 13:04:15,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:04:15,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:04:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6072 transitions. [2022-01-19 13:04:15,606 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609022556390977 [2022-01-19 13:04:15,606 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6072 transitions. [2022-01-19 13:04:15,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6072 transitions. [2022-01-19 13:04:15,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:15,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6072 transitions. [2022-01-19 13:04:15,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.78947368421052) internal successors, (6072), 38 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:15,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:15,615 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:15,615 INFO L186 Difference]: Start difference. First operand has 502 places, 341 transitions, 3736 flow. Second operand 38 states and 6072 transitions. [2022-01-19 13:04:15,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 487 transitions, 7449 flow [2022-01-19 13:04:15,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 487 transitions, 6592 flow, removed 137 selfloop flow, removed 34 redundant places. [2022-01-19 13:04:15,820 INFO L242 Difference]: Finished difference. Result has 467 places, 359 transitions, 3958 flow [2022-01-19 13:04:15,820 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3267, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3958, PETRI_PLACES=467, PETRI_TRANSITIONS=359} [2022-01-19 13:04:15,820 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 280 predicate places. [2022-01-19 13:04:15,821 INFO L470 AbstractCegarLoop]: Abstraction has has 467 places, 359 transitions, 3958 flow [2022-01-19 13:04:15,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:15,821 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:15,821 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:15,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-19 13:04:15,821 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:15,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:15,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1085254400, now seen corresponding path program 31 times [2022-01-19 13:04:15,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:15,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520234995] [2022-01-19 13:04:15,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:15,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:15,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:15,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520234995] [2022-01-19 13:04:15,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520234995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:15,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:15,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:15,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594936250] [2022-01-19 13:04:15,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:15,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:15,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:15,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:15,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:15,952 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:15,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 359 transitions, 3958 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:15,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:15,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:15,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:16,992 INFO L129 PetriNetUnfolder]: 745/2571 cut-off events. [2022-01-19 13:04:16,992 INFO L130 PetriNetUnfolder]: For 42544/42568 co-relation queries the response was YES. [2022-01-19 13:04:17,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15251 conditions, 2571 events. 745/2571 cut-off events. For 42544/42568 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 19146 event pairs, 384 based on Foata normal form. 7/2483 useless extension candidates. Maximal degree in co-relation 15083. Up to 898 conditions per place. [2022-01-19 13:04:17,035 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 219 selfloop transitions, 82 changer transitions 62/504 dead transitions. [2022-01-19 13:04:17,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 504 transitions, 7670 flow [2022-01-19 13:04:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:04:17,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:04:17,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5604 transitions. [2022-01-19 13:04:17,039 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624489795918368 [2022-01-19 13:04:17,039 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5604 transitions. [2022-01-19 13:04:17,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5604 transitions. [2022-01-19 13:04:17,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:17,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5604 transitions. [2022-01-19 13:04:17,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.11428571428573) internal successors, (5604), 35 states have internal predecessors, (5604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:17,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:17,046 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:17,046 INFO L186 Difference]: Start difference. First operand has 467 places, 359 transitions, 3958 flow. Second operand 35 states and 5604 transitions. [2022-01-19 13:04:17,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 504 transitions, 7670 flow [2022-01-19 13:04:17,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 504 transitions, 7021 flow, removed 283 selfloop flow, removed 16 redundant places. [2022-01-19 13:04:17,247 INFO L242 Difference]: Finished difference. Result has 487 places, 378 transitions, 4374 flow [2022-01-19 13:04:17,248 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3678, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4374, PETRI_PLACES=487, PETRI_TRANSITIONS=378} [2022-01-19 13:04:17,248 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 300 predicate places. [2022-01-19 13:04:17,248 INFO L470 AbstractCegarLoop]: Abstraction has has 487 places, 378 transitions, 4374 flow [2022-01-19 13:04:17,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:17,249 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:17,249 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:17,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-19 13:04:17,249 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:17,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:17,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1540722402, now seen corresponding path program 32 times [2022-01-19 13:04:17,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:17,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066840635] [2022-01-19 13:04:17,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:17,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:17,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:17,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066840635] [2022-01-19 13:04:17,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066840635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:17,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:17,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:17,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506468451] [2022-01-19 13:04:17,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:17,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:17,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:17,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:17,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:17,395 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:17,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 378 transitions, 4374 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:17,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:17,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:17,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:18,654 INFO L129 PetriNetUnfolder]: 767/2649 cut-off events. [2022-01-19 13:04:18,654 INFO L130 PetriNetUnfolder]: For 46385/46409 co-relation queries the response was YES. [2022-01-19 13:04:18,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16125 conditions, 2649 events. 767/2649 cut-off events. For 46385/46409 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 19902 event pairs, 375 based on Foata normal form. 7/2560 useless extension candidates. Maximal degree in co-relation 15945. Up to 898 conditions per place. [2022-01-19 13:04:18,702 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 233 selfloop transitions, 86 changer transitions 62/522 dead transitions. [2022-01-19 13:04:18,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 522 transitions, 8175 flow [2022-01-19 13:04:18,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:04:18,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:04:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5918 transitions. [2022-01-19 13:04:18,706 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616473616473617 [2022-01-19 13:04:18,706 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5918 transitions. [2022-01-19 13:04:18,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5918 transitions. [2022-01-19 13:04:18,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:18,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5918 transitions. [2022-01-19 13:04:18,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.94594594594594) internal successors, (5918), 37 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:18,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:18,714 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:18,715 INFO L186 Difference]: Start difference. First operand has 487 places, 378 transitions, 4374 flow. Second operand 37 states and 5918 transitions. [2022-01-19 13:04:18,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 522 transitions, 8175 flow [2022-01-19 13:04:18,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 522 transitions, 7684 flow, removed 182 selfloop flow, removed 19 redundant places. [2022-01-19 13:04:18,940 INFO L242 Difference]: Finished difference. Result has 508 places, 395 transitions, 4872 flow [2022-01-19 13:04:18,940 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4169, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4872, PETRI_PLACES=508, PETRI_TRANSITIONS=395} [2022-01-19 13:04:18,941 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 321 predicate places. [2022-01-19 13:04:18,941 INFO L470 AbstractCegarLoop]: Abstraction has has 508 places, 395 transitions, 4872 flow [2022-01-19 13:04:18,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:18,941 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:18,941 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:18,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-19 13:04:18,941 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:18,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:18,942 INFO L85 PathProgramCache]: Analyzing trace with hash 957886028, now seen corresponding path program 33 times [2022-01-19 13:04:18,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:18,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104286895] [2022-01-19 13:04:18,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:18,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:19,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:19,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104286895] [2022-01-19 13:04:19,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104286895] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:19,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:19,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:19,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209744494] [2022-01-19 13:04:19,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:19,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:19,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:19,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:19,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:19,076 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:19,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 395 transitions, 4872 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:19,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:19,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:19,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:20,292 INFO L129 PetriNetUnfolder]: 765/2652 cut-off events. [2022-01-19 13:04:20,292 INFO L130 PetriNetUnfolder]: For 47906/47930 co-relation queries the response was YES. [2022-01-19 13:04:20,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16310 conditions, 2652 events. 765/2652 cut-off events. For 47906/47930 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 19936 event pairs, 393 based on Foata normal form. 7/2562 useless extension candidates. Maximal degree in co-relation 16121. Up to 898 conditions per place. [2022-01-19 13:04:20,348 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 236 selfloop transitions, 90 changer transitions 64/531 dead transitions. [2022-01-19 13:04:20,349 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 531 transitions, 8581 flow [2022-01-19 13:04:20,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:04:20,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:04:20,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5763 transitions. [2022-01-19 13:04:20,351 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623015873015873 [2022-01-19 13:04:20,351 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5763 transitions. [2022-01-19 13:04:20,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5763 transitions. [2022-01-19 13:04:20,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:20,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5763 transitions. [2022-01-19 13:04:20,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.08333333333334) internal successors, (5763), 36 states have internal predecessors, (5763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:20,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:20,359 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:20,359 INFO L186 Difference]: Start difference. First operand has 508 places, 395 transitions, 4872 flow. Second operand 36 states and 5763 transitions. [2022-01-19 13:04:20,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 531 transitions, 8581 flow [2022-01-19 13:04:20,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 531 transitions, 8162 flow, removed 168 selfloop flow, removed 19 redundant places. [2022-01-19 13:04:20,605 INFO L242 Difference]: Finished difference. Result has 525 places, 404 transitions, 5233 flow [2022-01-19 13:04:20,606 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4688, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5233, PETRI_PLACES=525, PETRI_TRANSITIONS=404} [2022-01-19 13:04:20,606 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 338 predicate places. [2022-01-19 13:04:20,606 INFO L470 AbstractCegarLoop]: Abstraction has has 525 places, 404 transitions, 5233 flow [2022-01-19 13:04:20,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:20,606 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:20,606 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:20,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-19 13:04:20,607 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:20,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:20,607 INFO L85 PathProgramCache]: Analyzing trace with hash -127130082, now seen corresponding path program 34 times [2022-01-19 13:04:20,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:20,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151671352] [2022-01-19 13:04:20,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:20,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:20,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:20,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151671352] [2022-01-19 13:04:20,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151671352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:20,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:20,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:20,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100534838] [2022-01-19 13:04:20,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:20,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:20,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:20,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:20,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:20,748 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:20,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 404 transitions, 5233 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:20,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:20,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:20,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:22,123 INFO L129 PetriNetUnfolder]: 799/2737 cut-off events. [2022-01-19 13:04:22,123 INFO L130 PetriNetUnfolder]: For 53089/53113 co-relation queries the response was YES. [2022-01-19 13:04:22,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17357 conditions, 2737 events. 799/2737 cut-off events. For 53089/53113 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20893 event pairs, 369 based on Foata normal form. 7/2652 useless extension candidates. Maximal degree in co-relation 17161. Up to 900 conditions per place. [2022-01-19 13:04:22,174 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 253 selfloop transitions, 111 changer transitions 70/575 dead transitions. [2022-01-19 13:04:22,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 575 transitions, 9709 flow [2022-01-19 13:04:22,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:04:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:04:22,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-01-19 13:04:22,178 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-01-19 13:04:22,178 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-01-19 13:04:22,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-01-19 13:04:22,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:22,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-01-19 13:04:22,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:22,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:22,187 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:22,187 INFO L186 Difference]: Start difference. First operand has 525 places, 404 transitions, 5233 flow. Second operand 38 states and 6079 transitions. [2022-01-19 13:04:22,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 575 transitions, 9709 flow [2022-01-19 13:04:22,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 575 transitions, 9226 flow, removed 151 selfloop flow, removed 19 redundant places. [2022-01-19 13:04:22,482 INFO L242 Difference]: Finished difference. Result has 546 places, 428 transitions, 5834 flow [2022-01-19 13:04:22,483 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4949, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5834, PETRI_PLACES=546, PETRI_TRANSITIONS=428} [2022-01-19 13:04:22,483 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 359 predicate places. [2022-01-19 13:04:22,483 INFO L470 AbstractCegarLoop]: Abstraction has has 546 places, 428 transitions, 5834 flow [2022-01-19 13:04:22,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:22,484 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:22,484 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:22,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-19 13:04:22,484 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:22,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:22,485 INFO L85 PathProgramCache]: Analyzing trace with hash 835890076, now seen corresponding path program 35 times [2022-01-19 13:04:22,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:22,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926836400] [2022-01-19 13:04:22,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:22,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:22,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:22,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926836400] [2022-01-19 13:04:22,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926836400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:22,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:22,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:22,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759889091] [2022-01-19 13:04:22,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:22,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:22,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:22,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:22,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:22,639 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:22,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 428 transitions, 5834 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:22,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:22,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:22,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:23,978 INFO L129 PetriNetUnfolder]: 802/2744 cut-off events. [2022-01-19 13:04:23,979 INFO L130 PetriNetUnfolder]: For 52872/52896 co-relation queries the response was YES. [2022-01-19 13:04:24,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17475 conditions, 2744 events. 802/2744 cut-off events. For 52872/52896 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20790 event pairs, 394 based on Foata normal form. 7/2654 useless extension candidates. Maximal degree in co-relation 17271. Up to 912 conditions per place. [2022-01-19 13:04:24,036 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 249 selfloop transitions, 106 changer transitions 55/551 dead transitions. [2022-01-19 13:04:24,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 551 transitions, 9089 flow [2022-01-19 13:04:24,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:04:24,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:04:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2022-01-19 13:04:24,039 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2022-01-19 13:04:24,039 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2022-01-19 13:04:24,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2022-01-19 13:04:24,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:24,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2022-01-19 13:04:24,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:24,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:24,047 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:24,047 INFO L186 Difference]: Start difference. First operand has 546 places, 428 transitions, 5834 flow. Second operand 29 states and 4664 transitions. [2022-01-19 13:04:24,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 551 transitions, 9089 flow [2022-01-19 13:04:24,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 551 transitions, 8839 flow, removed 94 selfloop flow, removed 19 redundant places. [2022-01-19 13:04:24,374 INFO L242 Difference]: Finished difference. Result has 545 places, 440 transitions, 6215 flow [2022-01-19 13:04:24,374 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5647, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6215, PETRI_PLACES=545, PETRI_TRANSITIONS=440} [2022-01-19 13:04:24,374 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 358 predicate places. [2022-01-19 13:04:24,374 INFO L470 AbstractCegarLoop]: Abstraction has has 545 places, 440 transitions, 6215 flow [2022-01-19 13:04:24,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:24,375 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:24,375 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:24,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-19 13:04:24,375 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:24,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:24,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1351209000, now seen corresponding path program 36 times [2022-01-19 13:04:24,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:24,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724527643] [2022-01-19 13:04:24,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:24,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:24,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:24,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724527643] [2022-01-19 13:04:24,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724527643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:24,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:24,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:24,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108957345] [2022-01-19 13:04:24,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:24,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:24,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:24,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:24,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:24,529 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:24,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 440 transitions, 6215 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:24,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:24,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:24,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:26,043 INFO L129 PetriNetUnfolder]: 821/2920 cut-off events. [2022-01-19 13:04:26,043 INFO L130 PetriNetUnfolder]: For 56594/56615 co-relation queries the response was YES. [2022-01-19 13:04:26,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18257 conditions, 2920 events. 821/2920 cut-off events. For 56594/56615 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 22951 event pairs, 370 based on Foata normal form. 7/2831 useless extension candidates. Maximal degree in co-relation 18056. Up to 912 conditions per place. [2022-01-19 13:04:26,101 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 281 selfloop transitions, 118 changer transitions 90/630 dead transitions. [2022-01-19 13:04:26,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 630 transitions, 11404 flow [2022-01-19 13:04:26,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 13:04:26,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 13:04:26,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7025 transitions. [2022-01-19 13:04:26,105 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602813852813853 [2022-01-19 13:04:26,105 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7025 transitions. [2022-01-19 13:04:26,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7025 transitions. [2022-01-19 13:04:26,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:26,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7025 transitions. [2022-01-19 13:04:26,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6590909090909) internal successors, (7025), 44 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:26,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:26,115 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:26,115 INFO L186 Difference]: Start difference. First operand has 545 places, 440 transitions, 6215 flow. Second operand 44 states and 7025 transitions. [2022-01-19 13:04:26,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 630 transitions, 11404 flow [2022-01-19 13:04:26,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 630 transitions, 11006 flow, removed 81 selfloop flow, removed 14 redundant places. [2022-01-19 13:04:26,447 INFO L242 Difference]: Finished difference. Result has 593 places, 462 transitions, 6878 flow [2022-01-19 13:04:26,447 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5965, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=6878, PETRI_PLACES=593, PETRI_TRANSITIONS=462} [2022-01-19 13:04:26,447 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 406 predicate places. [2022-01-19 13:04:26,448 INFO L470 AbstractCegarLoop]: Abstraction has has 593 places, 462 transitions, 6878 flow [2022-01-19 13:04:26,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:26,448 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:26,448 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:26,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-19 13:04:26,448 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:26,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:26,449 INFO L85 PathProgramCache]: Analyzing trace with hash -700806868, now seen corresponding path program 37 times [2022-01-19 13:04:26,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:26,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587985085] [2022-01-19 13:04:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:26,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:26,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:26,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587985085] [2022-01-19 13:04:26,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587985085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:26,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:26,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:26,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550586549] [2022-01-19 13:04:26,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:26,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:26,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:26,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:26,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:26,605 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:26,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 462 transitions, 6878 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:26,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:26,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:26,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:27,954 INFO L129 PetriNetUnfolder]: 827/2892 cut-off events. [2022-01-19 13:04:27,955 INFO L130 PetriNetUnfolder]: For 62456/62477 co-relation queries the response was YES. [2022-01-19 13:04:27,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18931 conditions, 2892 events. 827/2892 cut-off events. For 62456/62477 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 22525 event pairs, 395 based on Foata normal form. 7/2795 useless extension candidates. Maximal degree in co-relation 18705. Up to 936 conditions per place. [2022-01-19 13:04:28,006 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 260 selfloop transitions, 129 changer transitions 57/587 dead transitions. [2022-01-19 13:04:28,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 587 transitions, 10557 flow [2022-01-19 13:04:28,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:04:28,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:04:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4823 transitions. [2022-01-19 13:04:28,009 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655555555555555 [2022-01-19 13:04:28,009 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4823 transitions. [2022-01-19 13:04:28,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4823 transitions. [2022-01-19 13:04:28,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:28,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4823 transitions. [2022-01-19 13:04:28,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.76666666666668) internal successors, (4823), 30 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:28,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:28,015 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:28,015 INFO L186 Difference]: Start difference. First operand has 593 places, 462 transitions, 6878 flow. Second operand 30 states and 4823 transitions. [2022-01-19 13:04:28,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 587 transitions, 10557 flow [2022-01-19 13:04:28,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 587 transitions, 10021 flow, removed 189 selfloop flow, removed 33 redundant places. [2022-01-19 13:04:28,370 INFO L242 Difference]: Finished difference. Result has 572 places, 479 transitions, 7405 flow [2022-01-19 13:04:28,371 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6598, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7405, PETRI_PLACES=572, PETRI_TRANSITIONS=479} [2022-01-19 13:04:28,371 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 385 predicate places. [2022-01-19 13:04:28,371 INFO L470 AbstractCegarLoop]: Abstraction has has 572 places, 479 transitions, 7405 flow [2022-01-19 13:04:28,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:28,371 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:28,372 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:28,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-19 13:04:28,372 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:28,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:28,372 INFO L85 PathProgramCache]: Analyzing trace with hash 62022254, now seen corresponding path program 38 times [2022-01-19 13:04:28,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:28,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260865901] [2022-01-19 13:04:28,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:28,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:28,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:28,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260865901] [2022-01-19 13:04:28,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260865901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:28,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:28,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:28,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558830550] [2022-01-19 13:04:28,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:28,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:28,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:28,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:28,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:28,514 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:28,515 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 479 transitions, 7405 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:28,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:28,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:28,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:29,687 INFO L129 PetriNetUnfolder]: 834/2924 cut-off events. [2022-01-19 13:04:29,687 INFO L130 PetriNetUnfolder]: For 60697/60718 co-relation queries the response was YES. [2022-01-19 13:04:29,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18876 conditions, 2924 events. 834/2924 cut-off events. For 60697/60718 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 22818 event pairs, 411 based on Foata normal form. 7/2828 useless extension candidates. Maximal degree in co-relation 18666. Up to 940 conditions per place. [2022-01-19 13:04:29,744 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 136 changer transitions 60/610 dead transitions. [2022-01-19 13:04:29,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 610 transitions, 11180 flow [2022-01-19 13:04:29,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:04:29,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:04:29,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 13:04:29,747 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 13:04:29,747 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 13:04:29,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 13:04:29,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:29,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 13:04:29,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:29,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:29,754 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:29,754 INFO L186 Difference]: Start difference. First operand has 572 places, 479 transitions, 7405 flow. Second operand 30 states and 4819 transitions. [2022-01-19 13:04:29,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 610 transitions, 11180 flow [2022-01-19 13:04:30,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 610 transitions, 10853 flow, removed 106 selfloop flow, removed 11 redundant places. [2022-01-19 13:04:30,122 INFO L242 Difference]: Finished difference. Result has 590 places, 494 transitions, 7948 flow [2022-01-19 13:04:30,122 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7178, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7948, PETRI_PLACES=590, PETRI_TRANSITIONS=494} [2022-01-19 13:04:30,123 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 403 predicate places. [2022-01-19 13:04:30,123 INFO L470 AbstractCegarLoop]: Abstraction has has 590 places, 494 transitions, 7948 flow [2022-01-19 13:04:30,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:30,123 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:30,123 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:30,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-19 13:04:30,123 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:30,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:30,124 INFO L85 PathProgramCache]: Analyzing trace with hash -843806286, now seen corresponding path program 39 times [2022-01-19 13:04:30,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:30,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206073770] [2022-01-19 13:04:30,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:30,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:30,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:30,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:30,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206073770] [2022-01-19 13:04:30,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206073770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:30,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:30,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:30,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323374299] [2022-01-19 13:04:30,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:30,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:30,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:30,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:30,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:30,254 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:30,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 494 transitions, 7948 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:30,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:30,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:30,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:31,684 INFO L129 PetriNetUnfolder]: 839/2959 cut-off events. [2022-01-19 13:04:31,684 INFO L130 PetriNetUnfolder]: For 62363/62384 co-relation queries the response was YES. [2022-01-19 13:04:31,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19136 conditions, 2959 events. 839/2959 cut-off events. For 62363/62384 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 23261 event pairs, 372 based on Foata normal form. 7/2868 useless extension candidates. Maximal degree in co-relation 18919. Up to 932 conditions per place. [2022-01-19 13:04:31,740 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 287 selfloop transitions, 141 changer transitions 82/651 dead transitions. [2022-01-19 13:04:31,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 651 transitions, 12242 flow [2022-01-19 13:04:31,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 13:04:31,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 13:04:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7335 transitions. [2022-01-19 13:04:31,744 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593167701863354 [2022-01-19 13:04:31,744 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7335 transitions. [2022-01-19 13:04:31,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7335 transitions. [2022-01-19 13:04:31,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:31,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7335 transitions. [2022-01-19 13:04:31,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.45652173913044) internal successors, (7335), 46 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:31,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:31,753 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:31,753 INFO L186 Difference]: Start difference. First operand has 590 places, 494 transitions, 7948 flow. Second operand 46 states and 7335 transitions. [2022-01-19 13:04:31,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 651 transitions, 12242 flow [2022-01-19 13:04:32,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 651 transitions, 11966 flow, removed 77 selfloop flow, removed 13 redundant places. [2022-01-19 13:04:32,135 INFO L242 Difference]: Finished difference. Result has 640 places, 502 transitions, 8332 flow [2022-01-19 13:04:32,136 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7738, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=8332, PETRI_PLACES=640, PETRI_TRANSITIONS=502} [2022-01-19 13:04:32,136 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 453 predicate places. [2022-01-19 13:04:32,136 INFO L470 AbstractCegarLoop]: Abstraction has has 640 places, 502 transitions, 8332 flow [2022-01-19 13:04:32,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:32,136 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:32,136 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:32,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-19 13:04:32,136 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:32,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:32,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1801851900, now seen corresponding path program 40 times [2022-01-19 13:04:32,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:32,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853480927] [2022-01-19 13:04:32,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:32,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:32,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:32,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:32,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853480927] [2022-01-19 13:04:32,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853480927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:32,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:32,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:32,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815475070] [2022-01-19 13:04:32,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:32,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:32,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:32,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:32,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:32,290 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:32,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 502 transitions, 8332 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:32,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:32,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:32,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:33,766 INFO L129 PetriNetUnfolder]: 839/2965 cut-off events. [2022-01-19 13:04:33,766 INFO L130 PetriNetUnfolder]: For 68344/68365 co-relation queries the response was YES. [2022-01-19 13:04:33,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19609 conditions, 2965 events. 839/2965 cut-off events. For 68344/68365 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 23282 event pairs, 416 based on Foata normal form. 7/2870 useless extension candidates. Maximal degree in co-relation 19369. Up to 944 conditions per place. [2022-01-19 13:04:33,825 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 280 selfloop transitions, 142 changer transitions 71/634 dead transitions. [2022-01-19 13:04:33,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 634 transitions, 12218 flow [2022-01-19 13:04:33,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:04:33,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:04:33,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6075 transitions. [2022-01-19 13:04:33,828 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612781954887218 [2022-01-19 13:04:33,828 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6075 transitions. [2022-01-19 13:04:33,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6075 transitions. [2022-01-19 13:04:33,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:33,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6075 transitions. [2022-01-19 13:04:33,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.8684210526316) internal successors, (6075), 38 states have internal predecessors, (6075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:33,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:33,836 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:33,836 INFO L186 Difference]: Start difference. First operand has 640 places, 502 transitions, 8332 flow. Second operand 38 states and 6075 transitions. [2022-01-19 13:04:33,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 634 transitions, 12218 flow [2022-01-19 13:04:34,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 634 transitions, 11934 flow, removed 88 selfloop flow, removed 31 redundant places. [2022-01-19 13:04:34,286 INFO L242 Difference]: Finished difference. Result has 636 places, 510 transitions, 8751 flow [2022-01-19 13:04:34,286 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8139, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8751, PETRI_PLACES=636, PETRI_TRANSITIONS=510} [2022-01-19 13:04:34,286 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 449 predicate places. [2022-01-19 13:04:34,286 INFO L470 AbstractCegarLoop]: Abstraction has has 636 places, 510 transitions, 8751 flow [2022-01-19 13:04:34,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:34,287 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:34,287 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:34,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-19 13:04:34,287 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:34,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:34,287 INFO L85 PathProgramCache]: Analyzing trace with hash 571628762, now seen corresponding path program 41 times [2022-01-19 13:04:34,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:34,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058144959] [2022-01-19 13:04:34,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:34,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:34,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:34,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:34,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058144959] [2022-01-19 13:04:34,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058144959] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:34,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:34,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:34,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353008343] [2022-01-19 13:04:34,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:34,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:34,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:34,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:34,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:34,429 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:34,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 510 transitions, 8751 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:34,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:34,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:34,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:35,648 INFO L129 PetriNetUnfolder]: 816/2798 cut-off events. [2022-01-19 13:04:35,648 INFO L130 PetriNetUnfolder]: For 65271/65295 co-relation queries the response was YES. [2022-01-19 13:04:35,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18914 conditions, 2798 events. 816/2798 cut-off events. For 65271/65295 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 21588 event pairs, 397 based on Foata normal form. 7/2704 useless extension candidates. Maximal degree in co-relation 18679. Up to 942 conditions per place. [2022-01-19 13:04:35,705 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 271 selfloop transitions, 125 changer transitions 62/599 dead transitions. [2022-01-19 13:04:35,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 599 transitions, 11408 flow [2022-01-19 13:04:35,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:04:35,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:04:35,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4494 transitions. [2022-01-19 13:04:35,707 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 13:04:35,708 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4494 transitions. [2022-01-19 13:04:35,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4494 transitions. [2022-01-19 13:04:35,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:35,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4494 transitions. [2022-01-19 13:04:35,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.5) internal successors, (4494), 28 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:35,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:35,713 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:35,713 INFO L186 Difference]: Start difference. First operand has 636 places, 510 transitions, 8751 flow. Second operand 28 states and 4494 transitions. [2022-01-19 13:04:35,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 599 transitions, 11408 flow [2022-01-19 13:04:36,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 599 transitions, 11138 flow, removed 66 selfloop flow, removed 22 redundant places. [2022-01-19 13:04:36,152 INFO L242 Difference]: Finished difference. Result has 626 places, 486 transitions, 8139 flow [2022-01-19 13:04:36,152 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8529, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8139, PETRI_PLACES=626, PETRI_TRANSITIONS=486} [2022-01-19 13:04:36,153 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 439 predicate places. [2022-01-19 13:04:36,153 INFO L470 AbstractCegarLoop]: Abstraction has has 626 places, 486 transitions, 8139 flow [2022-01-19 13:04:36,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:36,153 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:36,153 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:36,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-19 13:04:36,153 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:36,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:36,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1369805108, now seen corresponding path program 42 times [2022-01-19 13:04:36,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:36,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978110419] [2022-01-19 13:04:36,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:36,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:36,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:36,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:36,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978110419] [2022-01-19 13:04:36,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978110419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:36,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:36,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:36,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588558001] [2022-01-19 13:04:36,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:36,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:36,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:36,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:36,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:36,282 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:36,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 486 transitions, 8139 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:36,283 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:36,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:36,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:37,484 INFO L129 PetriNetUnfolder]: 810/2790 cut-off events. [2022-01-19 13:04:37,484 INFO L130 PetriNetUnfolder]: For 65006/65030 co-relation queries the response was YES. [2022-01-19 13:04:37,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18656 conditions, 2790 events. 810/2790 cut-off events. For 65006/65030 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21411 event pairs, 382 based on Foata normal form. 7/2700 useless extension candidates. Maximal degree in co-relation 18430. Up to 938 conditions per place. [2022-01-19 13:04:37,540 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 137 changer transitions 61/607 dead transitions. [2022-01-19 13:04:37,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 607 transitions, 11598 flow [2022-01-19 13:04:37,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:04:37,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:04:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-01-19 13:04:37,542 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-01-19 13:04:37,542 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-01-19 13:04:37,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-01-19 13:04:37,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:37,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-01-19 13:04:37,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:37,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:37,549 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:37,549 INFO L186 Difference]: Start difference. First operand has 626 places, 486 transitions, 8139 flow. Second operand 30 states and 4816 transitions. [2022-01-19 13:04:37,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 607 transitions, 11598 flow [2022-01-19 13:04:37,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 607 transitions, 10942 flow, removed 36 selfloop flow, removed 31 redundant places. [2022-01-19 13:04:37,937 INFO L242 Difference]: Finished difference. Result has 604 places, 492 transitions, 8074 flow [2022-01-19 13:04:37,937 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7579, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8074, PETRI_PLACES=604, PETRI_TRANSITIONS=492} [2022-01-19 13:04:37,937 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 417 predicate places. [2022-01-19 13:04:37,937 INFO L470 AbstractCegarLoop]: Abstraction has has 604 places, 492 transitions, 8074 flow [2022-01-19 13:04:37,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:37,938 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:37,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:37,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-19 13:04:37,938 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:37,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:37,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1122114580, now seen corresponding path program 43 times [2022-01-19 13:04:37,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:37,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686730428] [2022-01-19 13:04:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:37,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:38,064 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 13:04:38,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:38,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686730428] [2022-01-19 13:04:38,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686730428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:38,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:38,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:38,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870042373] [2022-01-19 13:04:38,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:38,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:38,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:38,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:38,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:38,066 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:38,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 492 transitions, 8074 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:38,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:38,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:38,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:39,252 INFO L129 PetriNetUnfolder]: 816/2882 cut-off events. [2022-01-19 13:04:39,252 INFO L130 PetriNetUnfolder]: For 62522/62543 co-relation queries the response was YES. [2022-01-19 13:04:39,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18751 conditions, 2882 events. 816/2882 cut-off events. For 62522/62543 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 22459 event pairs, 385 based on Foata normal form. 7/2786 useless extension candidates. Maximal degree in co-relation 18530. Up to 942 conditions per place. [2022-01-19 13:04:39,307 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 142 changer transitions 56/612 dead transitions. [2022-01-19 13:04:39,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 612 transitions, 11604 flow [2022-01-19 13:04:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:04:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:04:39,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2022-01-19 13:04:39,309 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 13:04:39,309 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2022-01-19 13:04:39,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2022-01-19 13:04:39,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:39,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2022-01-19 13:04:39,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:39,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:39,315 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:39,315 INFO L186 Difference]: Start difference. First operand has 604 places, 492 transitions, 8074 flow. Second operand 29 states and 4662 transitions. [2022-01-19 13:04:39,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 612 transitions, 11604 flow [2022-01-19 13:04:39,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 612 transitions, 11361 flow, removed 63 selfloop flow, removed 13 redundant places. [2022-01-19 13:04:39,705 INFO L242 Difference]: Finished difference. Result has 618 places, 504 transitions, 8570 flow [2022-01-19 13:04:39,705 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7878, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8570, PETRI_PLACES=618, PETRI_TRANSITIONS=504} [2022-01-19 13:04:39,705 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 431 predicate places. [2022-01-19 13:04:39,705 INFO L470 AbstractCegarLoop]: Abstraction has has 618 places, 504 transitions, 8570 flow [2022-01-19 13:04:39,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:39,706 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:39,706 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:39,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-19 13:04:39,706 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:39,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:39,706 INFO L85 PathProgramCache]: Analyzing trace with hash -745564998, now seen corresponding path program 44 times [2022-01-19 13:04:39,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:39,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410212446] [2022-01-19 13:04:39,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:39,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:39,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:39,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:39,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410212446] [2022-01-19 13:04:39,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410212446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:39,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:39,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:39,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690574688] [2022-01-19 13:04:39,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:39,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:39,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:39,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:39,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:39,864 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:39,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 504 transitions, 8570 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:39,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:39,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:39,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:41,406 INFO L129 PetriNetUnfolder]: 816/2919 cut-off events. [2022-01-19 13:04:41,406 INFO L130 PetriNetUnfolder]: For 65829/65850 co-relation queries the response was YES. [2022-01-19 13:04:41,443 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18953 conditions, 2919 events. 816/2919 cut-off events. For 65829/65850 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 22882 event pairs, 416 based on Foata normal form. 7/2823 useless extension candidates. Maximal degree in co-relation 18728. Up to 938 conditions per place. [2022-01-19 13:04:41,453 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 277 selfloop transitions, 131 changer transitions 71/620 dead transitions. [2022-01-19 13:04:41,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 640 places, 620 transitions, 11986 flow [2022-01-19 13:04:41,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:04:41,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:04:41,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5918 transitions. [2022-01-19 13:04:41,456 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616473616473617 [2022-01-19 13:04:41,456 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5918 transitions. [2022-01-19 13:04:41,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5918 transitions. [2022-01-19 13:04:41,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:41,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5918 transitions. [2022-01-19 13:04:41,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.94594594594594) internal successors, (5918), 37 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:41,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:41,463 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:41,463 INFO L186 Difference]: Start difference. First operand has 618 places, 504 transitions, 8570 flow. Second operand 37 states and 5918 transitions. [2022-01-19 13:04:41,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 640 places, 620 transitions, 11986 flow [2022-01-19 13:04:41,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 620 transitions, 11665 flow, removed 81 selfloop flow, removed 13 redundant places. [2022-01-19 13:04:41,851 INFO L242 Difference]: Finished difference. Result has 646 places, 505 transitions, 8655 flow [2022-01-19 13:04:41,851 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8292, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8655, PETRI_PLACES=646, PETRI_TRANSITIONS=505} [2022-01-19 13:04:41,852 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 459 predicate places. [2022-01-19 13:04:41,852 INFO L470 AbstractCegarLoop]: Abstraction has has 646 places, 505 transitions, 8655 flow [2022-01-19 13:04:41,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:41,852 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:41,852 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:41,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-19 13:04:41,852 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:41,853 INFO L85 PathProgramCache]: Analyzing trace with hash 608513532, now seen corresponding path program 45 times [2022-01-19 13:04:41,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:41,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631511640] [2022-01-19 13:04:41,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:41,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:42,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:42,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631511640] [2022-01-19 13:04:42,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631511640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:42,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:42,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:42,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085971639] [2022-01-19 13:04:42,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:42,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:42,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:42,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:42,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:42,010 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:42,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 505 transitions, 8655 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:42,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:42,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:42,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:43,215 INFO L129 PetriNetUnfolder]: 801/2861 cut-off events. [2022-01-19 13:04:43,215 INFO L130 PetriNetUnfolder]: For 66232/66253 co-relation queries the response was YES. [2022-01-19 13:04:43,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18747 conditions, 2861 events. 801/2861 cut-off events. For 66232/66253 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 22404 event pairs, 391 based on Foata normal form. 7/2765 useless extension candidates. Maximal degree in co-relation 18511. Up to 946 conditions per place. [2022-01-19 13:04:43,273 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 120 changer transitions 60/595 dead transitions. [2022-01-19 13:04:43,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 595 transitions, 11432 flow [2022-01-19 13:04:43,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:04:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:04:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4655 transitions. [2022-01-19 13:04:43,276 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-01-19 13:04:43,276 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4655 transitions. [2022-01-19 13:04:43,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4655 transitions. [2022-01-19 13:04:43,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:43,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4655 transitions. [2022-01-19 13:04:43,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.51724137931035) internal successors, (4655), 29 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:43,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:43,281 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:43,282 INFO L186 Difference]: Start difference. First operand has 646 places, 505 transitions, 8655 flow. Second operand 29 states and 4655 transitions. [2022-01-19 13:04:43,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 595 transitions, 11432 flow [2022-01-19 13:04:43,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 595 transitions, 11060 flow, removed 94 selfloop flow, removed 21 redundant places. [2022-01-19 13:04:43,716 INFO L242 Difference]: Finished difference. Result has 641 places, 492 transitions, 8314 flow [2022-01-19 13:04:43,716 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8405, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8314, PETRI_PLACES=641, PETRI_TRANSITIONS=492} [2022-01-19 13:04:43,717 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 454 predicate places. [2022-01-19 13:04:43,717 INFO L470 AbstractCegarLoop]: Abstraction has has 641 places, 492 transitions, 8314 flow [2022-01-19 13:04:43,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:43,717 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:43,717 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:43,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-19 13:04:43,717 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:43,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:43,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1167543244, now seen corresponding path program 46 times [2022-01-19 13:04:43,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:43,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89069313] [2022-01-19 13:04:43,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:43,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:43,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:43,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89069313] [2022-01-19 13:04:43,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89069313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:43,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:43,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:43,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100683250] [2022-01-19 13:04:43,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:43,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:43,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:43,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:43,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:43,844 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:43,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 492 transitions, 8314 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:43,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:43,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:43,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:45,036 INFO L129 PetriNetUnfolder]: 809/2812 cut-off events. [2022-01-19 13:04:45,037 INFO L130 PetriNetUnfolder]: For 66775/66799 co-relation queries the response was YES. [2022-01-19 13:04:45,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18867 conditions, 2812 events. 809/2812 cut-off events. For 66775/66799 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 21839 event pairs, 373 based on Foata normal form. 7/2719 useless extension candidates. Maximal degree in co-relation 18637. Up to 948 conditions per place. [2022-01-19 13:04:45,092 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 281 selfloop transitions, 141 changer transitions 61/624 dead transitions. [2022-01-19 13:04:45,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 624 transitions, 12328 flow [2022-01-19 13:04:45,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:04:45,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:04:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 13:04:45,095 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 13:04:45,095 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 13:04:45,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 13:04:45,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:45,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 13:04:45,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:45,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:45,101 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:45,101 INFO L186 Difference]: Start difference. First operand has 641 places, 492 transitions, 8314 flow. Second operand 30 states and 4817 transitions. [2022-01-19 13:04:45,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 624 transitions, 12328 flow [2022-01-19 13:04:45,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 624 transitions, 11805 flow, removed 41 selfloop flow, removed 29 redundant places. [2022-01-19 13:04:45,524 INFO L242 Difference]: Finished difference. Result has 628 places, 509 transitions, 8757 flow [2022-01-19 13:04:45,524 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7914, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8757, PETRI_PLACES=628, PETRI_TRANSITIONS=509} [2022-01-19 13:04:45,524 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 441 predicate places. [2022-01-19 13:04:45,524 INFO L470 AbstractCegarLoop]: Abstraction has has 628 places, 509 transitions, 8757 flow [2022-01-19 13:04:45,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:45,525 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:45,525 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:45,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-19 13:04:45,525 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:45,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:45,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1913108916, now seen corresponding path program 47 times [2022-01-19 13:04:45,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:45,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079021636] [2022-01-19 13:04:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:45,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:45,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:45,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:45,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079021636] [2022-01-19 13:04:45,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079021636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:45,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:45,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:45,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549631378] [2022-01-19 13:04:45,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:45,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:45,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:45,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:45,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:45,660 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:45,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 509 transitions, 8757 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:45,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:45,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:45,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:47,116 INFO L129 PetriNetUnfolder]: 815/2940 cut-off events. [2022-01-19 13:04:47,116 INFO L130 PetriNetUnfolder]: For 67056/67077 co-relation queries the response was YES. [2022-01-19 13:04:47,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19083 conditions, 2940 events. 815/2940 cut-off events. For 67056/67077 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 23318 event pairs, 373 based on Foata normal form. 7/2851 useless extension candidates. Maximal degree in co-relation 18856. Up to 924 conditions per place. [2022-01-19 13:04:47,175 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 306 selfloop transitions, 127 changer transitions 81/655 dead transitions. [2022-01-19 13:04:47,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 655 transitions, 13114 flow [2022-01-19 13:04:47,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 13:04:47,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 13:04:47,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7186 transitions. [2022-01-19 13:04:47,179 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604232804232804 [2022-01-19 13:04:47,179 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7186 transitions. [2022-01-19 13:04:47,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7186 transitions. [2022-01-19 13:04:47,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:47,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7186 transitions. [2022-01-19 13:04:47,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.6888888888889) internal successors, (7186), 45 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:47,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:47,188 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:47,188 INFO L186 Difference]: Start difference. First operand has 628 places, 509 transitions, 8757 flow. Second operand 45 states and 7186 transitions. [2022-01-19 13:04:47,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 655 transitions, 13114 flow [2022-01-19 13:04:47,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 655 transitions, 12721 flow, removed 86 selfloop flow, removed 16 redundant places. [2022-01-19 13:04:47,617 INFO L242 Difference]: Finished difference. Result has 674 places, 513 transitions, 8966 flow [2022-01-19 13:04:47,617 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8433, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=8966, PETRI_PLACES=674, PETRI_TRANSITIONS=513} [2022-01-19 13:04:47,618 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 487 predicate places. [2022-01-19 13:04:47,618 INFO L470 AbstractCegarLoop]: Abstraction has has 674 places, 513 transitions, 8966 flow [2022-01-19 13:04:47,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:47,618 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:47,618 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:47,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-19 13:04:47,618 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:47,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:47,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2129658, now seen corresponding path program 48 times [2022-01-19 13:04:47,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:47,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164531699] [2022-01-19 13:04:47,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:47,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:47,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:47,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:47,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164531699] [2022-01-19 13:04:47,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164531699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:47,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:47,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:47,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964242817] [2022-01-19 13:04:47,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:47,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:47,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:47,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:47,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:47,744 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:47,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 513 transitions, 8966 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:47,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:47,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:47,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:48,944 INFO L129 PetriNetUnfolder]: 779/2793 cut-off events. [2022-01-19 13:04:48,944 INFO L130 PetriNetUnfolder]: For 65646/65667 co-relation queries the response was YES. [2022-01-19 13:04:48,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18235 conditions, 2793 events. 779/2793 cut-off events. For 65646/65667 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 21657 event pairs, 370 based on Foata normal form. 7/2701 useless extension candidates. Maximal degree in co-relation 17987. Up to 932 conditions per place. [2022-01-19 13:04:49,003 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 113 changer transitions 64/586 dead transitions. [2022-01-19 13:04:49,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 586 transitions, 11220 flow [2022-01-19 13:04:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 13:04:49,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 13:04:49,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4333 transitions. [2022-01-19 13:04:49,006 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641975308641975 [2022-01-19 13:04:49,006 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4333 transitions. [2022-01-19 13:04:49,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4333 transitions. [2022-01-19 13:04:49,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:49,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4333 transitions. [2022-01-19 13:04:49,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.4814814814815) internal successors, (4333), 27 states have internal predecessors, (4333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:49,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:49,011 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:49,011 INFO L186 Difference]: Start difference. First operand has 674 places, 513 transitions, 8966 flow. Second operand 27 states and 4333 transitions. [2022-01-19 13:04:49,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 586 transitions, 11220 flow [2022-01-19 13:04:49,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 586 transitions, 10815 flow, removed 128 selfloop flow, removed 33 redundant places. [2022-01-19 13:04:49,472 INFO L242 Difference]: Finished difference. Result has 642 places, 476 transitions, 7901 flow [2022-01-19 13:04:49,472 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8646, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7901, PETRI_PLACES=642, PETRI_TRANSITIONS=476} [2022-01-19 13:04:49,473 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 455 predicate places. [2022-01-19 13:04:49,473 INFO L470 AbstractCegarLoop]: Abstraction has has 642 places, 476 transitions, 7901 flow [2022-01-19 13:04:49,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:49,473 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:49,473 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:49,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-19 13:04:49,473 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:49,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:49,473 INFO L85 PathProgramCache]: Analyzing trace with hash -694843082, now seen corresponding path program 49 times [2022-01-19 13:04:49,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:49,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066071301] [2022-01-19 13:04:49,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:49,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:49,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:49,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:49,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066071301] [2022-01-19 13:04:49,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066071301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:49,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:49,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:49,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470218471] [2022-01-19 13:04:49,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:49,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:49,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:49,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:49,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:49,615 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:49,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 476 transitions, 7901 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:49,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:49,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:49,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:50,739 INFO L129 PetriNetUnfolder]: 780/2789 cut-off events. [2022-01-19 13:04:50,739 INFO L130 PetriNetUnfolder]: For 63789/63810 co-relation queries the response was YES. [2022-01-19 13:04:50,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17930 conditions, 2789 events. 780/2789 cut-off events. For 63789/63810 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 21627 event pairs, 367 based on Foata normal form. 7/2697 useless extension candidates. Maximal degree in co-relation 17705. Up to 934 conditions per place. [2022-01-19 13:04:50,793 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 138 changer transitions 59/595 dead transitions. [2022-01-19 13:04:50,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 595 transitions, 11423 flow [2022-01-19 13:04:50,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:04:50,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:04:50,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4500 transitions. [2022-01-19 13:04:50,795 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653061224489796 [2022-01-19 13:04:50,795 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4500 transitions. [2022-01-19 13:04:50,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4500 transitions. [2022-01-19 13:04:50,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:50,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4500 transitions. [2022-01-19 13:04:50,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.71428571428572) internal successors, (4500), 28 states have internal predecessors, (4500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:50,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:50,801 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:50,801 INFO L186 Difference]: Start difference. First operand has 642 places, 476 transitions, 7901 flow. Second operand 28 states and 4500 transitions. [2022-01-19 13:04:50,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 595 transitions, 11423 flow [2022-01-19 13:04:51,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 595 transitions, 10527 flow, removed 45 selfloop flow, removed 37 redundant places. [2022-01-19 13:04:51,167 INFO L242 Difference]: Finished difference. Result has 603 places, 484 transitions, 7746 flow [2022-01-19 13:04:51,167 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7223, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7746, PETRI_PLACES=603, PETRI_TRANSITIONS=484} [2022-01-19 13:04:51,168 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 416 predicate places. [2022-01-19 13:04:51,168 INFO L470 AbstractCegarLoop]: Abstraction has has 603 places, 484 transitions, 7746 flow [2022-01-19 13:04:51,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:51,168 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:51,168 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:51,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-19 13:04:51,168 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:51,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:51,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1403431284, now seen corresponding path program 50 times [2022-01-19 13:04:51,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:51,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528873414] [2022-01-19 13:04:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:51,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:51,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:51,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:51,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528873414] [2022-01-19 13:04:51,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528873414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:51,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:51,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:51,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154117823] [2022-01-19 13:04:51,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:51,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:51,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:51,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:51,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:51,297 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:51,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 484 transitions, 7746 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:51,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:51,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:51,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:52,600 INFO L129 PetriNetUnfolder]: 809/2824 cut-off events. [2022-01-19 13:04:52,600 INFO L130 PetriNetUnfolder]: For 60327/60351 co-relation queries the response was YES. [2022-01-19 13:04:52,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18269 conditions, 2824 events. 809/2824 cut-off events. For 60327/60351 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 21962 event pairs, 381 based on Foata normal form. 7/2733 useless extension candidates. Maximal degree in co-relation 18055. Up to 938 conditions per place. [2022-01-19 13:04:52,650 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 290 selfloop transitions, 128 changer transitions 67/626 dead transitions. [2022-01-19 13:04:52,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 626 transitions, 11851 flow [2022-01-19 13:04:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:04:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:04:52,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6082 transitions. [2022-01-19 13:04:52,654 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621553884711779 [2022-01-19 13:04:52,654 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6082 transitions. [2022-01-19 13:04:52,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6082 transitions. [2022-01-19 13:04:52,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:52,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6082 transitions. [2022-01-19 13:04:52,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.05263157894737) internal successors, (6082), 38 states have internal predecessors, (6082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:52,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:52,661 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:52,661 INFO L186 Difference]: Start difference. First operand has 603 places, 484 transitions, 7746 flow. Second operand 38 states and 6082 transitions. [2022-01-19 13:04:52,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 626 transitions, 11851 flow [2022-01-19 13:04:52,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 626 transitions, 11442 flow, removed 63 selfloop flow, removed 15 redundant places. [2022-01-19 13:04:52,996 INFO L242 Difference]: Finished difference. Result has 636 places, 503 transitions, 8315 flow [2022-01-19 13:04:52,996 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7443, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8315, PETRI_PLACES=636, PETRI_TRANSITIONS=503} [2022-01-19 13:04:52,996 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 449 predicate places. [2022-01-19 13:04:52,996 INFO L470 AbstractCegarLoop]: Abstraction has has 636 places, 503 transitions, 8315 flow [2022-01-19 13:04:52,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:52,997 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:52,997 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:52,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-19 13:04:52,997 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:52,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:52,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1968117948, now seen corresponding path program 51 times [2022-01-19 13:04:52,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:52,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133550660] [2022-01-19 13:04:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:52,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:53,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:53,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133550660] [2022-01-19 13:04:53,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133550660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:53,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:53,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:53,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947638155] [2022-01-19 13:04:53,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:53,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:53,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:53,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:53,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:53,117 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:53,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 503 transitions, 8315 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:53,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:53,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:53,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:54,284 INFO L129 PetriNetUnfolder]: 779/2778 cut-off events. [2022-01-19 13:04:54,284 INFO L130 PetriNetUnfolder]: For 59813/59834 co-relation queries the response was YES. [2022-01-19 13:04:54,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17616 conditions, 2778 events. 779/2778 cut-off events. For 59813/59834 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21483 event pairs, 376 based on Foata normal form. 7/2683 useless extension candidates. Maximal degree in co-relation 17387. Up to 938 conditions per place. [2022-01-19 13:04:54,342 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 98 changer transitions 61/568 dead transitions. [2022-01-19 13:04:54,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 568 transitions, 10237 flow [2022-01-19 13:04:54,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:04:54,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:04:54,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4801 transitions. [2022-01-19 13:04:54,345 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620634920634921 [2022-01-19 13:04:54,345 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4801 transitions. [2022-01-19 13:04:54,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4801 transitions. [2022-01-19 13:04:54,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:54,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4801 transitions. [2022-01-19 13:04:54,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.03333333333333) internal successors, (4801), 30 states have internal predecessors, (4801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:54,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:54,351 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:54,351 INFO L186 Difference]: Start difference. First operand has 636 places, 503 transitions, 8315 flow. Second operand 30 states and 4801 transitions. [2022-01-19 13:04:54,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 568 transitions, 10237 flow [2022-01-19 13:04:54,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 568 transitions, 10004 flow, removed 66 selfloop flow, removed 20 redundant places. [2022-01-19 13:04:54,725 INFO L242 Difference]: Finished difference. Result has 630 places, 467 transitions, 7413 flow [2022-01-19 13:04:54,725 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8109, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7413, PETRI_PLACES=630, PETRI_TRANSITIONS=467} [2022-01-19 13:04:54,725 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 443 predicate places. [2022-01-19 13:04:54,725 INFO L470 AbstractCegarLoop]: Abstraction has has 630 places, 467 transitions, 7413 flow [2022-01-19 13:04:54,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:54,726 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:54,726 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:54,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-19 13:04:54,726 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:54,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:54,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1835249110, now seen corresponding path program 52 times [2022-01-19 13:04:54,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:54,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80342736] [2022-01-19 13:04:54,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:54,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:54,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:54,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:54,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80342736] [2022-01-19 13:04:54,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80342736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:54,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:54,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:54,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660850000] [2022-01-19 13:04:54,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:54,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:54,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:54,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:54,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:54,866 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:54,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 467 transitions, 7413 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:54,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:54,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:54,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:56,156 INFO L129 PetriNetUnfolder]: 778/2799 cut-off events. [2022-01-19 13:04:56,156 INFO L130 PetriNetUnfolder]: For 60349/60370 co-relation queries the response was YES. [2022-01-19 13:04:56,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17551 conditions, 2799 events. 778/2799 cut-off events. For 60349/60370 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21751 event pairs, 367 based on Foata normal form. 7/2709 useless extension candidates. Maximal degree in co-relation 17330. Up to 920 conditions per place. [2022-01-19 13:04:56,206 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 267 selfloop transitions, 117 changer transitions 68/593 dead transitions. [2022-01-19 13:04:56,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 593 transitions, 11052 flow [2022-01-19 13:04:56,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:04:56,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:04:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5923 transitions. [2022-01-19 13:04:56,209 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622908622908623 [2022-01-19 13:04:56,209 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5923 transitions. [2022-01-19 13:04:56,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5923 transitions. [2022-01-19 13:04:56,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:56,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5923 transitions. [2022-01-19 13:04:56,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.0810810810811) internal successors, (5923), 37 states have internal predecessors, (5923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:56,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:56,217 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:56,217 INFO L186 Difference]: Start difference. First operand has 630 places, 467 transitions, 7413 flow. Second operand 37 states and 5923 transitions. [2022-01-19 13:04:56,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 593 transitions, 11052 flow [2022-01-19 13:04:56,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 593 transitions, 10272 flow, removed 69 selfloop flow, removed 36 redundant places. [2022-01-19 13:04:56,543 INFO L242 Difference]: Finished difference. Result has 611 places, 471 transitions, 7275 flow [2022-01-19 13:04:56,543 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6811, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7275, PETRI_PLACES=611, PETRI_TRANSITIONS=471} [2022-01-19 13:04:56,544 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 424 predicate places. [2022-01-19 13:04:56,544 INFO L470 AbstractCegarLoop]: Abstraction has has 611 places, 471 transitions, 7275 flow [2022-01-19 13:04:56,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:56,544 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:56,544 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:56,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-19 13:04:56,545 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:56,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:56,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1627569222, now seen corresponding path program 53 times [2022-01-19 13:04:56,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:56,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122547596] [2022-01-19 13:04:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:56,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:56,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:56,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:56,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122547596] [2022-01-19 13:04:56,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122547596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:56,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:56,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:56,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100317646] [2022-01-19 13:04:56,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:56,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:56,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:56,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:56,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:56,685 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:56,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 471 transitions, 7275 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:56,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:56,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:56,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:57,827 INFO L129 PetriNetUnfolder]: 769/2693 cut-off events. [2022-01-19 13:04:57,827 INFO L130 PetriNetUnfolder]: For 54266/54290 co-relation queries the response was YES. [2022-01-19 13:04:57,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16994 conditions, 2693 events. 769/2693 cut-off events. For 54266/54290 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20545 event pairs, 379 based on Foata normal form. 7/2604 useless extension candidates. Maximal degree in co-relation 16770. Up to 931 conditions per place. [2022-01-19 13:04:57,879 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 264 selfloop transitions, 115 changer transitions 58/578 dead transitions. [2022-01-19 13:04:57,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 578 transitions, 10352 flow [2022-01-19 13:04:57,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:04:57,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:04:57,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 13:04:57,883 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 13:04:57,883 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 13:04:57,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 13:04:57,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:57,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 13:04:57,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:57,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:57,889 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:57,889 INFO L186 Difference]: Start difference. First operand has 611 places, 471 transitions, 7275 flow. Second operand 30 states and 4819 transitions. [2022-01-19 13:04:57,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 578 transitions, 10352 flow [2022-01-19 13:04:58,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 578 transitions, 10015 flow, removed 94 selfloop flow, removed 23 redundant places. [2022-01-19 13:04:58,212 INFO L242 Difference]: Finished difference. Result has 608 places, 476 transitions, 7470 flow [2022-01-19 13:04:58,212 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7042, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7470, PETRI_PLACES=608, PETRI_TRANSITIONS=476} [2022-01-19 13:04:58,212 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 421 predicate places. [2022-01-19 13:04:58,212 INFO L470 AbstractCegarLoop]: Abstraction has has 608 places, 476 transitions, 7470 flow [2022-01-19 13:04:58,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:58,213 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:58,213 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:58,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-19 13:04:58,213 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:58,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:58,213 INFO L85 PathProgramCache]: Analyzing trace with hash 24850180, now seen corresponding path program 54 times [2022-01-19 13:04:58,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:58,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424567113] [2022-01-19 13:04:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:58,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:58,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:58,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:58,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424567113] [2022-01-19 13:04:58,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424567113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:58,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:58,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:58,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237287807] [2022-01-19 13:04:58,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:58,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:58,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:58,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:58,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:58,330 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:58,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 476 transitions, 7470 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:58,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:58,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:58,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:04:59,463 INFO L129 PetriNetUnfolder]: 760/2661 cut-off events. [2022-01-19 13:04:59,463 INFO L130 PetriNetUnfolder]: For 52746/52770 co-relation queries the response was YES. [2022-01-19 13:04:59,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16674 conditions, 2661 events. 760/2661 cut-off events. For 52746/52770 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 20206 event pairs, 379 based on Foata normal form. 7/2571 useless extension candidates. Maximal degree in co-relation 16455. Up to 928 conditions per place. [2022-01-19 13:04:59,513 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 108 changer transitions 58/564 dead transitions. [2022-01-19 13:04:59,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 564 transitions, 9971 flow [2022-01-19 13:04:59,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:04:59,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:04:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4808 transitions. [2022-01-19 13:04:59,516 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631746031746032 [2022-01-19 13:04:59,516 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4808 transitions. [2022-01-19 13:04:59,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4808 transitions. [2022-01-19 13:04:59,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:04:59,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4808 transitions. [2022-01-19 13:04:59,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.26666666666668) internal successors, (4808), 30 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:59,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:59,522 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:59,522 INFO L186 Difference]: Start difference. First operand has 608 places, 476 transitions, 7470 flow. Second operand 30 states and 4808 transitions. [2022-01-19 13:04:59,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 564 transitions, 9971 flow [2022-01-19 13:04:59,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 564 transitions, 9678 flow, removed 58 selfloop flow, removed 15 redundant places. [2022-01-19 13:04:59,844 INFO L242 Difference]: Finished difference. Result has 619 places, 464 transitions, 7156 flow [2022-01-19 13:04:59,844 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7218, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7156, PETRI_PLACES=619, PETRI_TRANSITIONS=464} [2022-01-19 13:04:59,845 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 432 predicate places. [2022-01-19 13:04:59,845 INFO L470 AbstractCegarLoop]: Abstraction has has 619 places, 464 transitions, 7156 flow [2022-01-19 13:04:59,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:59,845 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:04:59,845 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:04:59,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-19 13:04:59,845 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:04:59,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:04:59,845 INFO L85 PathProgramCache]: Analyzing trace with hash -616680000, now seen corresponding path program 55 times [2022-01-19 13:04:59,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:04:59,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188321568] [2022-01-19 13:04:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:04:59,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:04:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:04:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:04:59,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:04:59,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188321568] [2022-01-19 13:04:59,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188321568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:04:59,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:04:59,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:04:59,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153496144] [2022-01-19 13:04:59,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:04:59,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:04:59,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:04:59,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:04:59,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:04:59,974 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:04:59,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 464 transitions, 7156 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:04:59,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:04:59,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:04:59,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:01,076 INFO L129 PetriNetUnfolder]: 759/2663 cut-off events. [2022-01-19 13:05:01,076 INFO L130 PetriNetUnfolder]: For 53404/53428 co-relation queries the response was YES. [2022-01-19 13:05:01,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16714 conditions, 2663 events. 759/2663 cut-off events. For 53404/53428 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20321 event pairs, 379 based on Foata normal form. 7/2573 useless extension candidates. Maximal degree in co-relation 16493. Up to 928 conditions per place. [2022-01-19 13:05:01,134 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 112 changer transitions 58/568 dead transitions. [2022-01-19 13:05:01,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 568 transitions, 10179 flow [2022-01-19 13:05:01,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:05:01,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:05:01,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4658 transitions. [2022-01-19 13:05:01,136 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7648604269293925 [2022-01-19 13:05:01,136 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4658 transitions. [2022-01-19 13:05:01,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4658 transitions. [2022-01-19 13:05:01,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:01,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4658 transitions. [2022-01-19 13:05:01,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6206896551724) internal successors, (4658), 29 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:01,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:01,142 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:01,142 INFO L186 Difference]: Start difference. First operand has 619 places, 464 transitions, 7156 flow. Second operand 29 states and 4658 transitions. [2022-01-19 13:05:01,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 568 transitions, 10179 flow [2022-01-19 13:05:01,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 568 transitions, 9620 flow, removed 57 selfloop flow, removed 30 redundant places. [2022-01-19 13:05:01,480 INFO L242 Difference]: Finished difference. Result has 600 places, 470 transitions, 7178 flow [2022-01-19 13:05:01,481 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6759, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7178, PETRI_PLACES=600, PETRI_TRANSITIONS=470} [2022-01-19 13:05:01,481 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 413 predicate places. [2022-01-19 13:05:01,481 INFO L470 AbstractCegarLoop]: Abstraction has has 600 places, 470 transitions, 7178 flow [2022-01-19 13:05:01,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:01,481 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:01,481 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:01,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-19 13:05:01,482 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:01,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:01,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1319380294, now seen corresponding path program 56 times [2022-01-19 13:05:01,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:01,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096644129] [2022-01-19 13:05:01,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:01,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:01,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:01,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096644129] [2022-01-19 13:05:01,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096644129] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:01,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:01,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:01,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895794598] [2022-01-19 13:05:01,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:01,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:01,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:01,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:01,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:01,610 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:01,611 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 470 transitions, 7178 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:01,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:01,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:01,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:02,708 INFO L129 PetriNetUnfolder]: 736/2673 cut-off events. [2022-01-19 13:05:02,708 INFO L130 PetriNetUnfolder]: For 49962/49983 co-relation queries the response was YES. [2022-01-19 13:05:02,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15909 conditions, 2673 events. 736/2673 cut-off events. For 49962/49983 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 20335 event pairs, 396 based on Foata normal form. 7/2582 useless extension candidates. Maximal degree in co-relation 15696. Up to 918 conditions per place. [2022-01-19 13:05:02,759 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 247 selfloop transitions, 90 changer transitions 59/537 dead transitions. [2022-01-19 13:05:02,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 537 transitions, 9064 flow [2022-01-19 13:05:02,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:05:02,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:05:02,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4494 transitions. [2022-01-19 13:05:02,761 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 13:05:02,761 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4494 transitions. [2022-01-19 13:05:02,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4494 transitions. [2022-01-19 13:05:02,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:02,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4494 transitions. [2022-01-19 13:05:02,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.5) internal successors, (4494), 28 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:02,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:02,767 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:02,767 INFO L186 Difference]: Start difference. First operand has 600 places, 470 transitions, 7178 flow. Second operand 28 states and 4494 transitions. [2022-01-19 13:05:02,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 537 transitions, 9064 flow [2022-01-19 13:05:03,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 537 transitions, 8747 flow, removed 55 selfloop flow, removed 15 redundant places. [2022-01-19 13:05:03,045 INFO L242 Difference]: Finished difference. Result has 605 places, 438 transitions, 6281 flow [2022-01-19 13:05:03,045 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6890, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6281, PETRI_PLACES=605, PETRI_TRANSITIONS=438} [2022-01-19 13:05:03,045 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 418 predicate places. [2022-01-19 13:05:03,045 INFO L470 AbstractCegarLoop]: Abstraction has has 605 places, 438 transitions, 6281 flow [2022-01-19 13:05:03,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:03,045 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:03,046 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:03,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-19 13:05:03,046 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:03,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:03,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1341491040, now seen corresponding path program 57 times [2022-01-19 13:05:03,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:03,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711987170] [2022-01-19 13:05:03,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:03,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:03,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:03,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711987170] [2022-01-19 13:05:03,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711987170] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:03,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:03,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:03,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656778254] [2022-01-19 13:05:03,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:03,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:03,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:03,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:03,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:03,169 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:03,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 438 transitions, 6281 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:03,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:03,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:03,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:04,247 INFO L129 PetriNetUnfolder]: 740/2678 cut-off events. [2022-01-19 13:05:04,247 INFO L130 PetriNetUnfolder]: For 50712/50733 co-relation queries the response was YES. [2022-01-19 13:05:04,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15926 conditions, 2678 events. 740/2678 cut-off events. For 50712/50733 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 20342 event pairs, 392 based on Foata normal form. 7/2587 useless extension candidates. Maximal degree in co-relation 15716. Up to 920 conditions per place. [2022-01-19 13:05:04,297 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 239 selfloop transitions, 112 changer transitions 56/548 dead transitions. [2022-01-19 13:05:04,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 548 transitions, 9296 flow [2022-01-19 13:05:04,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:05:04,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:05:04,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4659 transitions. [2022-01-19 13:05:04,300 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765024630541872 [2022-01-19 13:05:04,300 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4659 transitions. [2022-01-19 13:05:04,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4659 transitions. [2022-01-19 13:05:04,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:04,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4659 transitions. [2022-01-19 13:05:04,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6551724137931) internal successors, (4659), 29 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:04,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:04,306 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:04,306 INFO L186 Difference]: Start difference. First operand has 605 places, 438 transitions, 6281 flow. Second operand 29 states and 4659 transitions. [2022-01-19 13:05:04,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 548 transitions, 9296 flow [2022-01-19 13:05:04,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 548 transitions, 8711 flow, removed 40 selfloop flow, removed 36 redundant places. [2022-01-19 13:05:04,566 INFO L242 Difference]: Finished difference. Result has 578 places, 449 transitions, 6391 flow [2022-01-19 13:05:04,567 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5834, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6391, PETRI_PLACES=578, PETRI_TRANSITIONS=449} [2022-01-19 13:05:04,567 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 391 predicate places. [2022-01-19 13:05:04,567 INFO L470 AbstractCegarLoop]: Abstraction has has 578 places, 449 transitions, 6391 flow [2022-01-19 13:05:04,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:04,567 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:04,567 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:04,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-19 13:05:04,567 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:04,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:04,568 INFO L85 PathProgramCache]: Analyzing trace with hash 940176230, now seen corresponding path program 58 times [2022-01-19 13:05:04,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:04,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810312139] [2022-01-19 13:05:04,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:04,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:04,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:04,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810312139] [2022-01-19 13:05:04,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810312139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:04,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:04,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:04,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864287556] [2022-01-19 13:05:04,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:04,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:04,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:04,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:04,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:04,686 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:04,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 449 transitions, 6391 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:04,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:04,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:04,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:05,848 INFO L129 PetriNetUnfolder]: 727/2664 cut-off events. [2022-01-19 13:05:05,848 INFO L130 PetriNetUnfolder]: For 46108/46129 co-relation queries the response was YES. [2022-01-19 13:05:05,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15480 conditions, 2664 events. 727/2664 cut-off events. For 46108/46129 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 20407 event pairs, 358 based on Foata normal form. 7/2578 useless extension candidates. Maximal degree in co-relation 15274. Up to 896 conditions per place. [2022-01-19 13:05:05,895 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 238 selfloop transitions, 103 changer transitions 71/553 dead transitions. [2022-01-19 13:05:05,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 553 transitions, 9178 flow [2022-01-19 13:05:05,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:05:05,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:05:05,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5755 transitions. [2022-01-19 13:05:05,898 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612433862433863 [2022-01-19 13:05:05,898 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5755 transitions. [2022-01-19 13:05:05,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5755 transitions. [2022-01-19 13:05:05,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:05,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5755 transitions. [2022-01-19 13:05:05,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 159.86111111111111) internal successors, (5755), 36 states have internal predecessors, (5755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:05,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:05,905 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:05,905 INFO L186 Difference]: Start difference. First operand has 578 places, 449 transitions, 6391 flow. Second operand 36 states and 5755 transitions. [2022-01-19 13:05:05,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 553 transitions, 9178 flow [2022-01-19 13:05:06,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 553 transitions, 8906 flow, removed 58 selfloop flow, removed 13 redundant places. [2022-01-19 13:05:06,171 INFO L242 Difference]: Finished difference. Result has 604 places, 441 transitions, 6279 flow [2022-01-19 13:05:06,171 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6186, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6279, PETRI_PLACES=604, PETRI_TRANSITIONS=441} [2022-01-19 13:05:06,172 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 417 predicate places. [2022-01-19 13:05:06,172 INFO L470 AbstractCegarLoop]: Abstraction has has 604 places, 441 transitions, 6279 flow [2022-01-19 13:05:06,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:06,172 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:06,172 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:06,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-19 13:05:06,172 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:06,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:06,173 INFO L85 PathProgramCache]: Analyzing trace with hash -771603968, now seen corresponding path program 59 times [2022-01-19 13:05:06,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:06,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4130065] [2022-01-19 13:05:06,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:06,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:06,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:06,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4130065] [2022-01-19 13:05:06,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4130065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:06,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:06,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:06,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227146130] [2022-01-19 13:05:06,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:06,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:06,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:06,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:06,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:06,302 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:06,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 441 transitions, 6279 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:06,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:06,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:06,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:07,364 INFO L129 PetriNetUnfolder]: 699/2574 cut-off events. [2022-01-19 13:05:07,364 INFO L130 PetriNetUnfolder]: For 45769/45790 co-relation queries the response was YES. [2022-01-19 13:05:07,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14864 conditions, 2574 events. 699/2574 cut-off events. For 45769/45790 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 19464 event pairs, 359 based on Foata normal form. 7/2487 useless extension candidates. Maximal degree in co-relation 14648. Up to 908 conditions per place. [2022-01-19 13:05:07,410 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 226 selfloop transitions, 86 changer transitions 61/514 dead transitions. [2022-01-19 13:05:07,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 514 transitions, 8284 flow [2022-01-19 13:05:07,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:05:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:05:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4800 transitions. [2022-01-19 13:05:07,412 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 13:05:07,412 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4800 transitions. [2022-01-19 13:05:07,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4800 transitions. [2022-01-19 13:05:07,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:07,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4800 transitions. [2022-01-19 13:05:07,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.0) internal successors, (4800), 30 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:07,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:07,418 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:07,418 INFO L186 Difference]: Start difference. First operand has 604 places, 441 transitions, 6279 flow. Second operand 30 states and 4800 transitions. [2022-01-19 13:05:07,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 514 transitions, 8284 flow [2022-01-19 13:05:07,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 514 transitions, 7924 flow, removed 88 selfloop flow, removed 25 redundant places. [2022-01-19 13:05:07,667 INFO L242 Difference]: Finished difference. Result has 597 places, 413 transitions, 5526 flow [2022-01-19 13:05:07,667 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6010, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5526, PETRI_PLACES=597, PETRI_TRANSITIONS=413} [2022-01-19 13:05:07,667 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 410 predicate places. [2022-01-19 13:05:07,667 INFO L470 AbstractCegarLoop]: Abstraction has has 597 places, 413 transitions, 5526 flow [2022-01-19 13:05:07,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:07,668 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:07,668 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:07,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-19 13:05:07,668 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:07,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:07,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1027088626, now seen corresponding path program 60 times [2022-01-19 13:05:07,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:07,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846950007] [2022-01-19 13:05:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:07,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:07,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:07,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846950007] [2022-01-19 13:05:07,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846950007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:07,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:07,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:07,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831615692] [2022-01-19 13:05:07,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:07,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:07,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:07,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:07,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:07,788 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:07,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 413 transitions, 5526 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:07,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:07,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:07,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:08,861 INFO L129 PetriNetUnfolder]: 691/2544 cut-off events. [2022-01-19 13:05:08,861 INFO L130 PetriNetUnfolder]: For 44573/44594 co-relation queries the response was YES. [2022-01-19 13:05:08,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14462 conditions, 2544 events. 691/2544 cut-off events. For 44573/44594 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 19112 event pairs, 355 based on Foata normal form. 7/2459 useless extension candidates. Maximal degree in co-relation 14254. Up to 904 conditions per place. [2022-01-19 13:05:08,898 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 222 selfloop transitions, 77 changer transitions 58/498 dead transitions. [2022-01-19 13:05:08,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 498 transitions, 7772 flow [2022-01-19 13:05:08,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:05:08,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:05:08,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4804 transitions. [2022-01-19 13:05:08,900 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625396825396825 [2022-01-19 13:05:08,900 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4804 transitions. [2022-01-19 13:05:08,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4804 transitions. [2022-01-19 13:05:08,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:08,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4804 transitions. [2022-01-19 13:05:08,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.13333333333333) internal successors, (4804), 30 states have internal predecessors, (4804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:08,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:08,906 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:08,906 INFO L186 Difference]: Start difference. First operand has 597 places, 413 transitions, 5526 flow. Second operand 30 states and 4804 transitions. [2022-01-19 13:05:08,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 498 transitions, 7772 flow [2022-01-19 13:05:09,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 498 transitions, 7279 flow, removed 36 selfloop flow, removed 35 redundant places. [2022-01-19 13:05:09,122 INFO L242 Difference]: Finished difference. Result has 568 places, 400 transitions, 5022 flow [2022-01-19 13:05:09,122 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5137, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5022, PETRI_PLACES=568, PETRI_TRANSITIONS=400} [2022-01-19 13:05:09,123 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 381 predicate places. [2022-01-19 13:05:09,123 INFO L470 AbstractCegarLoop]: Abstraction has has 568 places, 400 transitions, 5022 flow [2022-01-19 13:05:09,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:09,123 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:09,123 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:09,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-19 13:05:09,123 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:09,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:09,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1112404892, now seen corresponding path program 61 times [2022-01-19 13:05:09,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:09,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625292490] [2022-01-19 13:05:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:09,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:09,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:09,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625292490] [2022-01-19 13:05:09,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625292490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:09,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:09,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:09,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390520667] [2022-01-19 13:05:09,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:09,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:09,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:09,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:09,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:09,238 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:09,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 400 transitions, 5022 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:09,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:09,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:09,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:10,193 INFO L129 PetriNetUnfolder]: 663/2462 cut-off events. [2022-01-19 13:05:10,193 INFO L130 PetriNetUnfolder]: For 39146/39167 co-relation queries the response was YES. [2022-01-19 13:05:10,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13488 conditions, 2462 events. 663/2462 cut-off events. For 39146/39167 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18463 event pairs, 355 based on Foata normal form. 7/2377 useless extension candidates. Maximal degree in co-relation 13289. Up to 890 conditions per place. [2022-01-19 13:05:10,233 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 202 selfloop transitions, 51 changer transitions 61/455 dead transitions. [2022-01-19 13:05:10,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 455 transitions, 6463 flow [2022-01-19 13:05:10,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:05:10,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:05:10,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4636 transitions. [2022-01-19 13:05:10,236 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.761247947454844 [2022-01-19 13:05:10,236 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4636 transitions. [2022-01-19 13:05:10,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4636 transitions. [2022-01-19 13:05:10,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:10,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4636 transitions. [2022-01-19 13:05:10,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.86206896551724) internal successors, (4636), 29 states have internal predecessors, (4636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:10,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:10,242 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:10,242 INFO L186 Difference]: Start difference. First operand has 568 places, 400 transitions, 5022 flow. Second operand 29 states and 4636 transitions. [2022-01-19 13:05:10,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 455 transitions, 6463 flow [2022-01-19 13:05:10,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 455 transitions, 6168 flow, removed 23 selfloop flow, removed 31 redundant places. [2022-01-19 13:05:10,444 INFO L242 Difference]: Finished difference. Result has 543 places, 354 transitions, 3905 flow [2022-01-19 13:05:10,444 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4749, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3905, PETRI_PLACES=543, PETRI_TRANSITIONS=354} [2022-01-19 13:05:10,445 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 356 predicate places. [2022-01-19 13:05:10,445 INFO L470 AbstractCegarLoop]: Abstraction has has 543 places, 354 transitions, 3905 flow [2022-01-19 13:05:10,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:10,445 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:10,445 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:10,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-19 13:05:10,445 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:10,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:10,445 INFO L85 PathProgramCache]: Analyzing trace with hash 711864822, now seen corresponding path program 62 times [2022-01-19 13:05:10,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:10,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237361565] [2022-01-19 13:05:10,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:10,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:10,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:10,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237361565] [2022-01-19 13:05:10,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237361565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:10,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:10,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:10,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672043405] [2022-01-19 13:05:10,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:10,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:10,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:10,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:10,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:10,591 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:10,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 354 transitions, 3905 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:10,592 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:10,592 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:10,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:11,512 INFO L129 PetriNetUnfolder]: 632/2349 cut-off events. [2022-01-19 13:05:11,512 INFO L130 PetriNetUnfolder]: For 35266/35287 co-relation queries the response was YES. [2022-01-19 13:05:11,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12498 conditions, 2349 events. 632/2349 cut-off events. For 35266/35287 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17227 event pairs, 347 based on Foata normal form. 7/2265 useless extension candidates. Maximal degree in co-relation 12314. Up to 870 conditions per place. [2022-01-19 13:05:11,548 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 174 selfloop transitions, 28 changer transitions 65/408 dead transitions. [2022-01-19 13:05:11,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 408 transitions, 5190 flow [2022-01-19 13:05:11,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:05:11,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:05:11,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4777 transitions. [2022-01-19 13:05:11,553 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7582539682539683 [2022-01-19 13:05:11,553 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4777 transitions. [2022-01-19 13:05:11,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4777 transitions. [2022-01-19 13:05:11,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:11,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4777 transitions. [2022-01-19 13:05:11,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.23333333333332) internal successors, (4777), 30 states have internal predecessors, (4777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:11,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:11,561 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:11,561 INFO L186 Difference]: Start difference. First operand has 543 places, 354 transitions, 3905 flow. Second operand 30 states and 4777 transitions. [2022-01-19 13:05:11,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 408 transitions, 5190 flow [2022-01-19 13:05:11,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 408 transitions, 4823 flow, removed 25 selfloop flow, removed 37 redundant places. [2022-01-19 13:05:11,715 INFO L242 Difference]: Finished difference. Result has 492 places, 303 transitions, 2710 flow [2022-01-19 13:05:11,716 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3566, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2710, PETRI_PLACES=492, PETRI_TRANSITIONS=303} [2022-01-19 13:05:11,716 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 305 predicate places. [2022-01-19 13:05:11,716 INFO L470 AbstractCegarLoop]: Abstraction has has 492 places, 303 transitions, 2710 flow [2022-01-19 13:05:11,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:11,716 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:11,716 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:11,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-19 13:05:11,716 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:11,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:11,717 INFO L85 PathProgramCache]: Analyzing trace with hash -59226848, now seen corresponding path program 63 times [2022-01-19 13:05:11,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:11,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399026028] [2022-01-19 13:05:11,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:11,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:11,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:11,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:11,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399026028] [2022-01-19 13:05:11,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399026028] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:11,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:11,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:11,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731556876] [2022-01-19 13:05:11,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:11,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:11,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:11,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:11,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:11,859 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:11,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 303 transitions, 2710 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:11,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:11,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:11,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:13,048 INFO L129 PetriNetUnfolder]: 669/2386 cut-off events. [2022-01-19 13:05:13,048 INFO L130 PetriNetUnfolder]: For 35382/35400 co-relation queries the response was YES. [2022-01-19 13:05:13,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13077 conditions, 2386 events. 669/2386 cut-off events. For 35382/35400 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 17371 event pairs, 365 based on Foata normal form. 3/2299 useless extension candidates. Maximal degree in co-relation 12904. Up to 870 conditions per place. [2022-01-19 13:05:13,083 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 191 selfloop transitions, 52 changer transitions 70/454 dead transitions. [2022-01-19 13:05:13,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 454 transitions, 6324 flow [2022-01-19 13:05:13,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 13:05:13,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 13:05:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7334 transitions. [2022-01-19 13:05:13,087 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592132505175984 [2022-01-19 13:05:13,088 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7334 transitions. [2022-01-19 13:05:13,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7334 transitions. [2022-01-19 13:05:13,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:13,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7334 transitions. [2022-01-19 13:05:13,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.43478260869566) internal successors, (7334), 46 states have internal predecessors, (7334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:13,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:13,097 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:13,097 INFO L186 Difference]: Start difference. First operand has 492 places, 303 transitions, 2710 flow. Second operand 46 states and 7334 transitions. [2022-01-19 13:05:13,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 454 transitions, 6324 flow [2022-01-19 13:05:13,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 454 transitions, 5771 flow, removed 89 selfloop flow, removed 35 redundant places. [2022-01-19 13:05:13,232 INFO L242 Difference]: Finished difference. Result has 465 places, 324 transitions, 3136 flow [2022-01-19 13:05:13,232 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2468, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3136, PETRI_PLACES=465, PETRI_TRANSITIONS=324} [2022-01-19 13:05:13,233 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 278 predicate places. [2022-01-19 13:05:13,233 INFO L470 AbstractCegarLoop]: Abstraction has has 465 places, 324 transitions, 3136 flow [2022-01-19 13:05:13,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:13,233 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:13,233 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:13,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-19 13:05:13,233 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:13,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:13,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1612633054, now seen corresponding path program 64 times [2022-01-19 13:05:13,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:13,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026055001] [2022-01-19 13:05:13,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:13,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:13,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:13,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:13,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026055001] [2022-01-19 13:05:13,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026055001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:13,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:13,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:13,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616046273] [2022-01-19 13:05:13,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:13,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:13,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:13,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:13,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:13,357 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:13,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 324 transitions, 3136 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:13,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:13,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:13,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:14,475 INFO L129 PetriNetUnfolder]: 713/2489 cut-off events. [2022-01-19 13:05:14,475 INFO L130 PetriNetUnfolder]: For 37447/37467 co-relation queries the response was YES. [2022-01-19 13:05:14,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14129 conditions, 2489 events. 713/2489 cut-off events. For 37447/37467 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 18196 event pairs, 396 based on Foata normal form. 3/2399 useless extension candidates. Maximal degree in co-relation 13952. Up to 870 conditions per place. [2022-01-19 13:05:14,513 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 197 selfloop transitions, 64 changer transitions 70/472 dead transitions. [2022-01-19 13:05:14,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 472 transitions, 6973 flow [2022-01-19 13:05:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 13:05:14,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 13:05:14,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6864 transitions. [2022-01-19 13:05:14,516 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7601328903654485 [2022-01-19 13:05:14,516 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6864 transitions. [2022-01-19 13:05:14,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6864 transitions. [2022-01-19 13:05:14,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:14,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6864 transitions. [2022-01-19 13:05:14,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.62790697674419) internal successors, (6864), 43 states have internal predecessors, (6864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:14,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:14,525 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:14,525 INFO L186 Difference]: Start difference. First operand has 465 places, 324 transitions, 3136 flow. Second operand 43 states and 6864 transitions. [2022-01-19 13:05:14,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 472 transitions, 6973 flow [2022-01-19 13:05:14,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 472 transitions, 6244 flow, removed 353 selfloop flow, removed 25 redundant places. [2022-01-19 13:05:14,671 INFO L242 Difference]: Finished difference. Result has 485 places, 346 transitions, 3642 flow [2022-01-19 13:05:14,671 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=3642, PETRI_PLACES=485, PETRI_TRANSITIONS=346} [2022-01-19 13:05:14,671 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 298 predicate places. [2022-01-19 13:05:14,671 INFO L470 AbstractCegarLoop]: Abstraction has has 485 places, 346 transitions, 3642 flow [2022-01-19 13:05:14,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:14,672 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:14,672 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:14,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-19 13:05:14,672 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:14,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:14,672 INFO L85 PathProgramCache]: Analyzing trace with hash 58890488, now seen corresponding path program 65 times [2022-01-19 13:05:14,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:14,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441124288] [2022-01-19 13:05:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:14,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:14,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:14,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:14,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441124288] [2022-01-19 13:05:14,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441124288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:14,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:14,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:14,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510545623] [2022-01-19 13:05:14,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:14,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:14,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:14,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:14,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:14,794 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:14,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 346 transitions, 3642 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:14,795 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:14,795 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:14,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:16,086 INFO L129 PetriNetUnfolder]: 747/2589 cut-off events. [2022-01-19 13:05:16,086 INFO L130 PetriNetUnfolder]: For 45367/45387 co-relation queries the response was YES. [2022-01-19 13:05:16,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15583 conditions, 2589 events. 747/2589 cut-off events. For 45367/45387 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 19306 event pairs, 384 based on Foata normal form. 3/2497 useless extension candidates. Maximal degree in co-relation 15394. Up to 870 conditions per place. [2022-01-19 13:05:16,128 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 214 selfloop transitions, 70 changer transitions 70/495 dead transitions. [2022-01-19 13:05:16,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 495 transitions, 7798 flow [2022-01-19 13:05:16,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 13:05:16,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 13:05:16,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7180 transitions. [2022-01-19 13:05:16,132 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7597883597883598 [2022-01-19 13:05:16,132 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7180 transitions. [2022-01-19 13:05:16,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7180 transitions. [2022-01-19 13:05:16,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:16,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7180 transitions. [2022-01-19 13:05:16,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.55555555555554) internal successors, (7180), 45 states have internal predecessors, (7180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:16,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:16,141 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:16,141 INFO L186 Difference]: Start difference. First operand has 485 places, 346 transitions, 3642 flow. Second operand 45 states and 7180 transitions. [2022-01-19 13:05:16,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 495 transitions, 7798 flow [2022-01-19 13:05:16,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 495 transitions, 7157 flow, removed 287 selfloop flow, removed 25 redundant places. [2022-01-19 13:05:16,341 INFO L242 Difference]: Finished difference. Result has 509 places, 366 transitions, 4207 flow [2022-01-19 13:05:16,341 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3475, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4207, PETRI_PLACES=509, PETRI_TRANSITIONS=366} [2022-01-19 13:05:16,342 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 322 predicate places. [2022-01-19 13:05:16,342 INFO L470 AbstractCegarLoop]: Abstraction has has 509 places, 366 transitions, 4207 flow [2022-01-19 13:05:16,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:16,342 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:16,342 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:16,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-19 13:05:16,342 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:16,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:16,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1538926772, now seen corresponding path program 66 times [2022-01-19 13:05:16,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:16,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362672727] [2022-01-19 13:05:16,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:16,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:16,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:16,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:16,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362672727] [2022-01-19 13:05:16,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362672727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:16,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:16,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:16,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748054255] [2022-01-19 13:05:16,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:16,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:16,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:16,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:16,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:16,462 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:16,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 366 transitions, 4207 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:16,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:16,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:16,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:17,720 INFO L129 PetriNetUnfolder]: 743/2673 cut-off events. [2022-01-19 13:05:17,720 INFO L130 PetriNetUnfolder]: For 46832/46838 co-relation queries the response was YES. [2022-01-19 13:05:17,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15765 conditions, 2673 events. 743/2673 cut-off events. For 46832/46838 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 20246 event pairs, 445 based on Foata normal form. 1/2577 useless extension candidates. Maximal degree in co-relation 15564. Up to 870 conditions per place. [2022-01-19 13:05:17,767 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 217 selfloop transitions, 74 changer transitions 72/504 dead transitions. [2022-01-19 13:05:17,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 504 transitions, 8271 flow [2022-01-19 13:05:17,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 13:05:17,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 13:05:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7025 transitions. [2022-01-19 13:05:17,771 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602813852813853 [2022-01-19 13:05:17,771 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7025 transitions. [2022-01-19 13:05:17,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7025 transitions. [2022-01-19 13:05:17,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:17,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7025 transitions. [2022-01-19 13:05:17,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6590909090909) internal successors, (7025), 44 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:17,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:17,779 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:17,780 INFO L186 Difference]: Start difference. First operand has 509 places, 366 transitions, 4207 flow. Second operand 44 states and 7025 transitions. [2022-01-19 13:05:17,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 504 transitions, 8271 flow [2022-01-19 13:05:17,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 504 transitions, 7660 flow, removed 294 selfloop flow, removed 32 redundant places. [2022-01-19 13:05:17,990 INFO L242 Difference]: Finished difference. Result has 522 places, 375 transitions, 4584 flow [2022-01-19 13:05:17,990 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4053, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4584, PETRI_PLACES=522, PETRI_TRANSITIONS=375} [2022-01-19 13:05:17,990 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 335 predicate places. [2022-01-19 13:05:17,991 INFO L470 AbstractCegarLoop]: Abstraction has has 522 places, 375 transitions, 4584 flow [2022-01-19 13:05:17,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:17,991 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:17,991 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:17,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-19 13:05:17,991 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:17,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:17,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1707985558, now seen corresponding path program 67 times [2022-01-19 13:05:17,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:17,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671414528] [2022-01-19 13:05:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:17,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:18,117 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 13:05:18,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:18,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671414528] [2022-01-19 13:05:18,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671414528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:18,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:18,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:18,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539705572] [2022-01-19 13:05:18,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:18,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:18,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:18,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:18,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:18,119 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:18,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 375 transitions, 4584 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:18,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:18,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:18,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:19,299 INFO L129 PetriNetUnfolder]: 733/2639 cut-off events. [2022-01-19 13:05:19,299 INFO L130 PetriNetUnfolder]: For 46684/46690 co-relation queries the response was YES. [2022-01-19 13:05:19,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15534 conditions, 2639 events. 733/2639 cut-off events. For 46684/46690 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 19827 event pairs, 412 based on Foata normal form. 1/2546 useless extension candidates. Maximal degree in co-relation 15330. Up to 870 conditions per place. [2022-01-19 13:05:19,345 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 208 selfloop transitions, 81 changer transitions 62/492 dead transitions. [2022-01-19 13:05:19,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 492 transitions, 8064 flow [2022-01-19 13:05:19,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:05:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:05:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6074 transitions. [2022-01-19 13:05:19,348 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7611528822055138 [2022-01-19 13:05:19,348 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6074 transitions. [2022-01-19 13:05:19,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6074 transitions. [2022-01-19 13:05:19,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:19,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6074 transitions. [2022-01-19 13:05:19,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.8421052631579) internal successors, (6074), 38 states have internal predecessors, (6074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:19,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:19,356 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:19,356 INFO L186 Difference]: Start difference. First operand has 522 places, 375 transitions, 4584 flow. Second operand 38 states and 6074 transitions. [2022-01-19 13:05:19,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 492 transitions, 8064 flow [2022-01-19 13:05:19,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 492 transitions, 7420 flow, removed 270 selfloop flow, removed 28 redundant places. [2022-01-19 13:05:19,569 INFO L242 Difference]: Finished difference. Result has 521 places, 387 transitions, 4924 flow [2022-01-19 13:05:19,569 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4340, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4924, PETRI_PLACES=521, PETRI_TRANSITIONS=387} [2022-01-19 13:05:19,569 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 334 predicate places. [2022-01-19 13:05:19,569 INFO L470 AbstractCegarLoop]: Abstraction has has 521 places, 387 transitions, 4924 flow [2022-01-19 13:05:19,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:19,570 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:19,570 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:19,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-19 13:05:19,570 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:19,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:19,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1714333308, now seen corresponding path program 68 times [2022-01-19 13:05:19,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:19,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684001775] [2022-01-19 13:05:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:19,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:19,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:19,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684001775] [2022-01-19 13:05:19,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684001775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:19,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:19,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:19,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752815499] [2022-01-19 13:05:19,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:19,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:19,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:19,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:19,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:19,692 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:19,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 387 transitions, 4924 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:19,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:19,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:19,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:20,856 INFO L129 PetriNetUnfolder]: 766/2715 cut-off events. [2022-01-19 13:05:20,856 INFO L130 PetriNetUnfolder]: For 48166/48172 co-relation queries the response was YES. [2022-01-19 13:05:20,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16474 conditions, 2715 events. 766/2715 cut-off events. For 48166/48172 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 20487 event pairs, 448 based on Foata normal form. 1/2617 useless extension candidates. Maximal degree in co-relation 16276. Up to 870 conditions per place. [2022-01-19 13:05:20,902 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 216 selfloop transitions, 98 changer transitions 63/518 dead transitions. [2022-01-19 13:05:20,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 518 transitions, 8714 flow [2022-01-19 13:05:20,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:05:20,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:05:20,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5604 transitions. [2022-01-19 13:05:20,905 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624489795918368 [2022-01-19 13:05:20,905 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5604 transitions. [2022-01-19 13:05:20,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5604 transitions. [2022-01-19 13:05:20,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:20,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5604 transitions. [2022-01-19 13:05:20,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.11428571428573) internal successors, (5604), 35 states have internal predecessors, (5604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:20,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:20,912 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:20,912 INFO L186 Difference]: Start difference. First operand has 521 places, 387 transitions, 4924 flow. Second operand 35 states and 5604 transitions. [2022-01-19 13:05:20,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 518 transitions, 8714 flow [2022-01-19 13:05:21,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 518 transitions, 7959 flow, removed 324 selfloop flow, removed 20 redundant places. [2022-01-19 13:05:21,154 INFO L242 Difference]: Finished difference. Result has 537 places, 406 transitions, 5312 flow [2022-01-19 13:05:21,155 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4567, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5312, PETRI_PLACES=537, PETRI_TRANSITIONS=406} [2022-01-19 13:05:21,155 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 350 predicate places. [2022-01-19 13:05:21,155 INFO L470 AbstractCegarLoop]: Abstraction has has 537 places, 406 transitions, 5312 flow [2022-01-19 13:05:21,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:21,155 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:21,155 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:21,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-19 13:05:21,156 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:21,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:21,156 INFO L85 PathProgramCache]: Analyzing trace with hash -838985778, now seen corresponding path program 69 times [2022-01-19 13:05:21,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:21,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742979646] [2022-01-19 13:05:21,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:21,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:21,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:21,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742979646] [2022-01-19 13:05:21,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742979646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:21,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:21,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:21,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643719517] [2022-01-19 13:05:21,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:21,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:21,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:21,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:21,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:21,288 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:21,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 406 transitions, 5312 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:21,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:21,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:21,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:22,564 INFO L129 PetriNetUnfolder]: 785/2772 cut-off events. [2022-01-19 13:05:22,564 INFO L130 PetriNetUnfolder]: For 50993/50999 co-relation queries the response was YES. [2022-01-19 13:05:22,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17102 conditions, 2772 events. 785/2772 cut-off events. For 50993/50999 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 21116 event pairs, 451 based on Foata normal form. 1/2677 useless extension candidates. Maximal degree in co-relation 16895. Up to 870 conditions per place. [2022-01-19 13:05:22,618 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 227 selfloop transitions, 99 changer transitions 60/527 dead transitions. [2022-01-19 13:05:22,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 527 transitions, 8945 flow [2022-01-19 13:05:22,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:05:22,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:05:22,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6078 transitions. [2022-01-19 13:05:22,621 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616541353383459 [2022-01-19 13:05:22,621 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6078 transitions. [2022-01-19 13:05:22,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6078 transitions. [2022-01-19 13:05:22,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:22,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6078 transitions. [2022-01-19 13:05:22,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.94736842105263) internal successors, (6078), 38 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:22,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:22,724 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:22,724 INFO L186 Difference]: Start difference. First operand has 537 places, 406 transitions, 5312 flow. Second operand 38 states and 6078 transitions. [2022-01-19 13:05:22,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 527 transitions, 8945 flow [2022-01-19 13:05:22,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 527 transitions, 8371 flow, removed 192 selfloop flow, removed 21 redundant places. [2022-01-19 13:05:22,961 INFO L242 Difference]: Finished difference. Result has 557 places, 421 transitions, 5728 flow [2022-01-19 13:05:22,961 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5048, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5728, PETRI_PLACES=557, PETRI_TRANSITIONS=421} [2022-01-19 13:05:22,961 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 370 predicate places. [2022-01-19 13:05:22,961 INFO L470 AbstractCegarLoop]: Abstraction has has 557 places, 421 transitions, 5728 flow [2022-01-19 13:05:22,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:22,962 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:22,962 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:22,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-19 13:05:22,962 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:22,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:22,963 INFO L85 PathProgramCache]: Analyzing trace with hash -624649196, now seen corresponding path program 70 times [2022-01-19 13:05:22,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:22,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499990151] [2022-01-19 13:05:22,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:22,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:23,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:23,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499990151] [2022-01-19 13:05:23,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499990151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:23,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:23,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:23,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838266248] [2022-01-19 13:05:23,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:23,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:23,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:23,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:23,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:23,097 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:23,098 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 421 transitions, 5728 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:23,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:23,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:23,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:24,353 INFO L129 PetriNetUnfolder]: 812/2845 cut-off events. [2022-01-19 13:05:24,354 INFO L130 PetriNetUnfolder]: For 56654/56660 co-relation queries the response was YES. [2022-01-19 13:05:24,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18058 conditions, 2845 events. 812/2845 cut-off events. For 56654/56660 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 21808 event pairs, 475 based on Foata normal form. 1/2747 useless extension candidates. Maximal degree in co-relation 17843. Up to 870 conditions per place. [2022-01-19 13:05:24,406 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 239 selfloop transitions, 106 changer transitions 61/547 dead transitions. [2022-01-19 13:05:24,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 547 transitions, 9610 flow [2022-01-19 13:05:24,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:05:24,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:05:24,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5769 transitions. [2022-01-19 13:05:24,409 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763095238095238 [2022-01-19 13:05:24,409 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5769 transitions. [2022-01-19 13:05:24,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5769 transitions. [2022-01-19 13:05:24,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:24,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5769 transitions. [2022-01-19 13:05:24,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.25) internal successors, (5769), 36 states have internal predecessors, (5769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:24,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:24,416 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:24,416 INFO L186 Difference]: Start difference. First operand has 557 places, 421 transitions, 5728 flow. Second operand 36 states and 5769 transitions. [2022-01-19 13:05:24,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 547 transitions, 9610 flow [2022-01-19 13:05:24,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 547 transitions, 9124 flow, removed 185 selfloop flow, removed 25 redundant places. [2022-01-19 13:05:24,706 INFO L242 Difference]: Finished difference. Result has 569 places, 443 transitions, 6429 flow [2022-01-19 13:05:24,706 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5502, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6429, PETRI_PLACES=569, PETRI_TRANSITIONS=443} [2022-01-19 13:05:24,706 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 382 predicate places. [2022-01-19 13:05:24,706 INFO L470 AbstractCegarLoop]: Abstraction has has 569 places, 443 transitions, 6429 flow [2022-01-19 13:05:24,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:24,707 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:24,707 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:24,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-19 13:05:24,707 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:24,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:24,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1759232538, now seen corresponding path program 71 times [2022-01-19 13:05:24,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:24,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063062127] [2022-01-19 13:05:24,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:24,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:24,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:24,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:24,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063062127] [2022-01-19 13:05:24,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063062127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:24,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:24,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:24,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888884038] [2022-01-19 13:05:24,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:24,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:24,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:24,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:24,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:24,825 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:24,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 443 transitions, 6429 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:24,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:24,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:24,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:26,083 INFO L129 PetriNetUnfolder]: 804/2835 cut-off events. [2022-01-19 13:05:26,084 INFO L130 PetriNetUnfolder]: For 59440/59446 co-relation queries the response was YES. [2022-01-19 13:05:26,132 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18147 conditions, 2835 events. 804/2835 cut-off events. For 59440/59446 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 21714 event pairs, 457 based on Foata normal form. 1/2737 useless extension candidates. Maximal degree in co-relation 17928. Up to 870 conditions per place. [2022-01-19 13:05:26,142 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 244 selfloop transitions, 107 changer transitions 61/553 dead transitions. [2022-01-19 13:05:26,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 553 transitions, 10040 flow [2022-01-19 13:05:26,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:05:26,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:05:26,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5924 transitions. [2022-01-19 13:05:26,145 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624195624195624 [2022-01-19 13:05:26,145 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5924 transitions. [2022-01-19 13:05:26,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5924 transitions. [2022-01-19 13:05:26,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:26,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5924 transitions. [2022-01-19 13:05:26,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1081081081081) internal successors, (5924), 37 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:26,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:26,153 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:26,153 INFO L186 Difference]: Start difference. First operand has 569 places, 443 transitions, 6429 flow. Second operand 37 states and 5924 transitions. [2022-01-19 13:05:26,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 553 transitions, 10040 flow [2022-01-19 13:05:26,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 553 transitions, 9503 flow, removed 211 selfloop flow, removed 20 redundant places. [2022-01-19 13:05:26,474 INFO L242 Difference]: Finished difference. Result has 587 places, 451 transitions, 6717 flow [2022-01-19 13:05:26,474 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6186, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6717, PETRI_PLACES=587, PETRI_TRANSITIONS=451} [2022-01-19 13:05:26,474 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 400 predicate places. [2022-01-19 13:05:26,475 INFO L470 AbstractCegarLoop]: Abstraction has has 587 places, 451 transitions, 6717 flow [2022-01-19 13:05:26,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:26,475 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:26,475 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:26,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-19 13:05:26,475 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:26,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:26,475 INFO L85 PathProgramCache]: Analyzing trace with hash -730277562, now seen corresponding path program 72 times [2022-01-19 13:05:26,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:26,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557025553] [2022-01-19 13:05:26,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:26,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:26,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:26,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:26,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557025553] [2022-01-19 13:05:26,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557025553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:26,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:26,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:26,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717157105] [2022-01-19 13:05:26,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:26,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:26,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:26,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:26,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:26,596 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:26,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 451 transitions, 6717 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:26,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:26,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:26,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:27,889 INFO L129 PetriNetUnfolder]: 832/2914 cut-off events. [2022-01-19 13:05:27,890 INFO L130 PetriNetUnfolder]: For 65873/65879 co-relation queries the response was YES. [2022-01-19 13:05:27,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19058 conditions, 2914 events. 832/2914 cut-off events. For 65873/65879 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 22599 event pairs, 472 based on Foata normal form. 1/2814 useless extension candidates. Maximal degree in co-relation 18832. Up to 870 conditions per place. [2022-01-19 13:05:27,946 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 269 selfloop transitions, 106 changer transitions 63/579 dead transitions. [2022-01-19 13:05:27,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 579 transitions, 10802 flow [2022-01-19 13:05:27,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:05:27,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:05:27,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5765 transitions. [2022-01-19 13:05:27,949 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625661375661376 [2022-01-19 13:05:27,949 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5765 transitions. [2022-01-19 13:05:27,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5765 transitions. [2022-01-19 13:05:27,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:27,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5765 transitions. [2022-01-19 13:05:27,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.13888888888889) internal successors, (5765), 36 states have internal predecessors, (5765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:27,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:27,956 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:27,956 INFO L186 Difference]: Start difference. First operand has 587 places, 451 transitions, 6717 flow. Second operand 36 states and 5765 transitions. [2022-01-19 13:05:27,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 579 transitions, 10802 flow [2022-01-19 13:05:28,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 579 transitions, 10313 flow, removed 176 selfloop flow, removed 20 redundant places. [2022-01-19 13:05:28,318 INFO L242 Difference]: Finished difference. Result has 605 places, 471 transitions, 7343 flow [2022-01-19 13:05:28,318 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6458, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=7343, PETRI_PLACES=605, PETRI_TRANSITIONS=471} [2022-01-19 13:05:28,319 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 418 predicate places. [2022-01-19 13:05:28,319 INFO L470 AbstractCegarLoop]: Abstraction has has 605 places, 471 transitions, 7343 flow [2022-01-19 13:05:28,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:28,319 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:28,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:28,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-19 13:05:28,319 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:28,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:28,319 INFO L85 PathProgramCache]: Analyzing trace with hash -199673802, now seen corresponding path program 73 times [2022-01-19 13:05:28,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:28,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629284142] [2022-01-19 13:05:28,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:28,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:28,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:28,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629284142] [2022-01-19 13:05:28,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629284142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:28,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:28,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:28,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499355448] [2022-01-19 13:05:28,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:28,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:28,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:28,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:28,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:28,434 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:28,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 471 transitions, 7343 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:28,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:28,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:28,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:29,808 INFO L129 PetriNetUnfolder]: 851/2879 cut-off events. [2022-01-19 13:05:29,808 INFO L130 PetriNetUnfolder]: For 75335/75355 co-relation queries the response was YES. [2022-01-19 13:05:29,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20009 conditions, 2879 events. 851/2879 cut-off events. For 75335/75355 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 22080 event pairs, 433 based on Foata normal form. 3/2785 useless extension candidates. Maximal degree in co-relation 19774. Up to 870 conditions per place. [2022-01-19 13:05:29,864 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 284 selfloop transitions, 108 changer transitions 61/594 dead transitions. [2022-01-19 13:05:29,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 594 transitions, 11601 flow [2022-01-19 13:05:29,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:05:29,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:05:29,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6082 transitions. [2022-01-19 13:05:29,867 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621553884711779 [2022-01-19 13:05:29,867 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6082 transitions. [2022-01-19 13:05:29,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6082 transitions. [2022-01-19 13:05:29,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:29,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6082 transitions. [2022-01-19 13:05:29,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.05263157894737) internal successors, (6082), 38 states have internal predecessors, (6082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:29,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:29,875 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:29,875 INFO L186 Difference]: Start difference. First operand has 605 places, 471 transitions, 7343 flow. Second operand 38 states and 6082 transitions. [2022-01-19 13:05:29,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 594 transitions, 11601 flow [2022-01-19 13:05:30,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 594 transitions, 11032 flow, removed 240 selfloop flow, removed 20 redundant places. [2022-01-19 13:05:30,308 INFO L242 Difference]: Finished difference. Result has 625 places, 486 transitions, 7846 flow [2022-01-19 13:05:30,308 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7105, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7846, PETRI_PLACES=625, PETRI_TRANSITIONS=486} [2022-01-19 13:05:30,308 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 438 predicate places. [2022-01-19 13:05:30,309 INFO L470 AbstractCegarLoop]: Abstraction has has 625 places, 486 transitions, 7846 flow [2022-01-19 13:05:30,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:30,309 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:30,309 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:30,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-19 13:05:30,309 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:30,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:30,309 INFO L85 PathProgramCache]: Analyzing trace with hash 301173134, now seen corresponding path program 74 times [2022-01-19 13:05:30,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:30,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948563258] [2022-01-19 13:05:30,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:30,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:30,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:30,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:30,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948563258] [2022-01-19 13:05:30,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948563258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:30,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:30,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:30,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692581828] [2022-01-19 13:05:30,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:30,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:30,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:30,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:30,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:30,424 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:30,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 486 transitions, 7846 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:30,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:30,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:30,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:31,795 INFO L129 PetriNetUnfolder]: 846/2966 cut-off events. [2022-01-19 13:05:31,795 INFO L130 PetriNetUnfolder]: For 77303/77309 co-relation queries the response was YES. [2022-01-19 13:05:31,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20089 conditions, 2966 events. 846/2966 cut-off events. For 77303/77309 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 23085 event pairs, 471 based on Foata normal form. 1/2866 useless extension candidates. Maximal degree in co-relation 19847. Up to 870 conditions per place. [2022-01-19 13:05:31,856 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 290 selfloop transitions, 109 changer transitions 62/602 dead transitions. [2022-01-19 13:05:31,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 602 transitions, 11967 flow [2022-01-19 13:05:31,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:05:31,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:05:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5928 transitions. [2022-01-19 13:05:31,859 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629343629343629 [2022-01-19 13:05:31,859 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5928 transitions. [2022-01-19 13:05:31,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5928 transitions. [2022-01-19 13:05:31,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:31,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5928 transitions. [2022-01-19 13:05:31,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.21621621621622) internal successors, (5928), 37 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:31,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:31,866 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:31,866 INFO L186 Difference]: Start difference. First operand has 625 places, 486 transitions, 7846 flow. Second operand 37 states and 5928 transitions. [2022-01-19 13:05:31,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 602 transitions, 11967 flow [2022-01-19 13:05:32,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 602 transitions, 11444 flow, removed 185 selfloop flow, removed 22 redundant places. [2022-01-19 13:05:32,313 INFO L242 Difference]: Finished difference. Result has 639 places, 496 transitions, 8197 flow [2022-01-19 13:05:32,313 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7586, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8197, PETRI_PLACES=639, PETRI_TRANSITIONS=496} [2022-01-19 13:05:32,314 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 452 predicate places. [2022-01-19 13:05:32,314 INFO L470 AbstractCegarLoop]: Abstraction has has 639 places, 496 transitions, 8197 flow [2022-01-19 13:05:32,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:32,314 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:32,314 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:32,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-19 13:05:32,314 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:32,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:32,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1062180916, now seen corresponding path program 75 times [2022-01-19 13:05:32,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:32,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577078160] [2022-01-19 13:05:32,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:32,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:32,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:32,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577078160] [2022-01-19 13:05:32,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577078160] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:32,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:32,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:32,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415971274] [2022-01-19 13:05:32,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:32,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:32,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:32,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:32,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:32,461 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:32,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 496 transitions, 8197 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:32,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:32,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:32,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:33,946 INFO L129 PetriNetUnfolder]: 860/3006 cut-off events. [2022-01-19 13:05:33,946 INFO L130 PetriNetUnfolder]: For 85929/85935 co-relation queries the response was YES. [2022-01-19 13:05:33,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20788 conditions, 3006 events. 860/3006 cut-off events. For 85929/85935 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 23610 event pairs, 450 based on Foata normal form. 1/2906 useless extension candidates. Maximal degree in co-relation 20540. Up to 870 conditions per place. [2022-01-19 13:05:34,008 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 293 selfloop transitions, 120 changer transitions 62/616 dead transitions. [2022-01-19 13:05:34,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 616 transitions, 12495 flow [2022-01-19 13:05:34,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:05:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:05:34,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5920 transitions. [2022-01-19 13:05:34,011 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 13:05:34,011 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5920 transitions. [2022-01-19 13:05:34,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5920 transitions. [2022-01-19 13:05:34,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:34,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5920 transitions. [2022-01-19 13:05:34,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.0) internal successors, (5920), 37 states have internal predecessors, (5920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:34,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:34,018 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:34,018 INFO L186 Difference]: Start difference. First operand has 639 places, 496 transitions, 8197 flow. Second operand 37 states and 5920 transitions. [2022-01-19 13:05:34,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 652 places, 616 transitions, 12495 flow [2022-01-19 13:05:34,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 616 transitions, 11963 flow, removed 196 selfloop flow, removed 21 redundant places. [2022-01-19 13:05:34,522 INFO L242 Difference]: Finished difference. Result has 656 places, 513 transitions, 8769 flow [2022-01-19 13:05:34,522 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7909, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8769, PETRI_PLACES=656, PETRI_TRANSITIONS=513} [2022-01-19 13:05:34,523 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 469 predicate places. [2022-01-19 13:05:34,523 INFO L470 AbstractCegarLoop]: Abstraction has has 656 places, 513 transitions, 8769 flow [2022-01-19 13:05:34,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:34,523 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:34,523 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:34,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-19 13:05:34,523 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:34,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:34,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1303378814, now seen corresponding path program 76 times [2022-01-19 13:05:34,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:34,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541696702] [2022-01-19 13:05:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:34,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:34,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:34,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541696702] [2022-01-19 13:05:34,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541696702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:34,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:34,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:34,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392650379] [2022-01-19 13:05:34,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:34,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:34,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:34,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:34,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:34,660 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:34,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 513 transitions, 8769 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:34,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:34,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:34,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:36,052 INFO L129 PetriNetUnfolder]: 855/2929 cut-off events. [2022-01-19 13:05:36,052 INFO L130 PetriNetUnfolder]: For 86763/86783 co-relation queries the response was YES. [2022-01-19 13:05:36,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20828 conditions, 2929 events. 855/2929 cut-off events. For 86763/86783 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 22811 event pairs, 415 based on Foata normal form. 3/2832 useless extension candidates. Maximal degree in co-relation 20573. Up to 870 conditions per place. [2022-01-19 13:05:36,112 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 305 selfloop transitions, 116 changer transitions 63/625 dead transitions. [2022-01-19 13:05:36,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 625 transitions, 13023 flow [2022-01-19 13:05:36,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:05:36,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:05:36,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6080 transitions. [2022-01-19 13:05:36,116 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 13:05:36,116 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6080 transitions. [2022-01-19 13:05:36,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6080 transitions. [2022-01-19 13:05:36,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:36,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6080 transitions. [2022-01-19 13:05:36,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.0) internal successors, (6080), 38 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:36,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:36,123 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:36,123 INFO L186 Difference]: Start difference. First operand has 656 places, 513 transitions, 8769 flow. Second operand 38 states and 6080 transitions. [2022-01-19 13:05:36,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 625 transitions, 13023 flow [2022-01-19 13:05:36,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 625 transitions, 12440 flow, removed 231 selfloop flow, removed 22 redundant places. [2022-01-19 13:05:36,667 INFO L242 Difference]: Finished difference. Result has 671 places, 518 transitions, 8954 flow [2022-01-19 13:05:36,668 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8492, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8954, PETRI_PLACES=671, PETRI_TRANSITIONS=518} [2022-01-19 13:05:36,668 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 484 predicate places. [2022-01-19 13:05:36,668 INFO L470 AbstractCegarLoop]: Abstraction has has 671 places, 518 transitions, 8954 flow [2022-01-19 13:05:36,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:36,668 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:36,668 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:36,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-19 13:05:36,668 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:36,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:36,669 INFO L85 PathProgramCache]: Analyzing trace with hash -2142244812, now seen corresponding path program 77 times [2022-01-19 13:05:36,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:36,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706090493] [2022-01-19 13:05:36,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:36,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:36,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:36,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:36,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706090493] [2022-01-19 13:05:36,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706090493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:36,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:36,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:36,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600885440] [2022-01-19 13:05:36,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:36,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:36,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:36,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:36,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:36,792 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:36,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 518 transitions, 8954 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:36,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:36,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:36,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:38,304 INFO L129 PetriNetUnfolder]: 881/3016 cut-off events. [2022-01-19 13:05:38,304 INFO L130 PetriNetUnfolder]: For 87078/87098 co-relation queries the response was YES. [2022-01-19 13:05:38,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21486 conditions, 3016 events. 881/3016 cut-off events. For 87078/87098 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 23666 event pairs, 439 based on Foata normal form. 3/2922 useless extension candidates. Maximal degree in co-relation 21227. Up to 872 conditions per place. [2022-01-19 13:05:38,368 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 324 selfloop transitions, 130 changer transitions 88/683 dead transitions. [2022-01-19 13:05:38,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 683 transitions, 14305 flow [2022-01-19 13:05:38,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 13:05:38,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 13:05:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7031 transitions. [2022-01-19 13:05:38,372 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609307359307359 [2022-01-19 13:05:38,372 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7031 transitions. [2022-01-19 13:05:38,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7031 transitions. [2022-01-19 13:05:38,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:38,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7031 transitions. [2022-01-19 13:05:38,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.79545454545453) internal successors, (7031), 44 states have internal predecessors, (7031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:38,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:38,382 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:38,382 INFO L186 Difference]: Start difference. First operand has 671 places, 518 transitions, 8954 flow. Second operand 44 states and 7031 transitions. [2022-01-19 13:05:38,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 683 transitions, 14305 flow [2022-01-19 13:05:38,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 670 places, 683 transitions, 13942 flow, removed 132 selfloop flow, removed 20 redundant places. [2022-01-19 13:05:39,006 INFO L242 Difference]: Finished difference. Result has 703 places, 540 transitions, 9799 flow [2022-01-19 13:05:39,006 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8705, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=9799, PETRI_PLACES=703, PETRI_TRANSITIONS=540} [2022-01-19 13:05:39,006 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 516 predicate places. [2022-01-19 13:05:39,006 INFO L470 AbstractCegarLoop]: Abstraction has has 703 places, 540 transitions, 9799 flow [2022-01-19 13:05:39,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:39,007 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:39,007 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:39,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-19 13:05:39,007 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:39,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:39,007 INFO L85 PathProgramCache]: Analyzing trace with hash 950289242, now seen corresponding path program 78 times [2022-01-19 13:05:39,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:39,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218712534] [2022-01-19 13:05:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:39,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:39,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:39,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218712534] [2022-01-19 13:05:39,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218712534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:39,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:39,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:39,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172318513] [2022-01-19 13:05:39,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:39,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:39,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:39,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:39,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:39,122 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:39,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 703 places, 540 transitions, 9799 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:39,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:39,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:39,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:40,590 INFO L129 PetriNetUnfolder]: 911/3083 cut-off events. [2022-01-19 13:05:40,590 INFO L130 PetriNetUnfolder]: For 94382/94402 co-relation queries the response was YES. [2022-01-19 13:05:40,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22643 conditions, 3083 events. 911/3083 cut-off events. For 94382/94402 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24291 event pairs, 407 based on Foata normal form. 3/2993 useless extension candidates. Maximal degree in co-relation 22369. Up to 892 conditions per place. [2022-01-19 13:05:40,659 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 313 selfloop transitions, 188 changer transitions 75/717 dead transitions. [2022-01-19 13:05:40,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 717 transitions, 15509 flow [2022-01-19 13:05:40,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:05:40,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:05:40,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-01-19 13:05:40,662 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-01-19 13:05:40,662 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-01-19 13:05:40,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-01-19 13:05:40,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:40,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-01-19 13:05:40,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:40,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:40,672 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:40,672 INFO L186 Difference]: Start difference. First operand has 703 places, 540 transitions, 9799 flow. Second operand 38 states and 6079 transitions. [2022-01-19 13:05:40,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 717 transitions, 15509 flow [2022-01-19 13:05:41,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 717 transitions, 14862 flow, removed 191 selfloop flow, removed 37 redundant places. [2022-01-19 13:05:41,343 INFO L242 Difference]: Finished difference. Result has 697 places, 564 transitions, 10551 flow [2022-01-19 13:05:41,343 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9365, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10551, PETRI_PLACES=697, PETRI_TRANSITIONS=564} [2022-01-19 13:05:41,344 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 510 predicate places. [2022-01-19 13:05:41,344 INFO L470 AbstractCegarLoop]: Abstraction has has 697 places, 564 transitions, 10551 flow [2022-01-19 13:05:41,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:41,344 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:41,344 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:41,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-19 13:05:41,344 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:41,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:41,344 INFO L85 PathProgramCache]: Analyzing trace with hash 835811594, now seen corresponding path program 79 times [2022-01-19 13:05:41,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:41,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568860225] [2022-01-19 13:05:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:41,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:41,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:41,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568860225] [2022-01-19 13:05:41,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568860225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:41,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:41,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:41,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187697663] [2022-01-19 13:05:41,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:41,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:41,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:41,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:41,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:41,460 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:41,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 564 transitions, 10551 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:41,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:41,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:41,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:42,829 INFO L129 PetriNetUnfolder]: 911/3074 cut-off events. [2022-01-19 13:05:42,829 INFO L130 PetriNetUnfolder]: For 84417/84437 co-relation queries the response was YES. [2022-01-19 13:05:42,895 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22216 conditions, 3074 events. 911/3074 cut-off events. For 84417/84437 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 24176 event pairs, 450 based on Foata normal form. 3/2973 useless extension candidates. Maximal degree in co-relation 21950. Up to 905 conditions per place. [2022-01-19 13:05:42,908 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 334 selfloop transitions, 137 changer transitions 54/666 dead transitions. [2022-01-19 13:05:42,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 701 places, 666 transitions, 14178 flow [2022-01-19 13:05:42,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:05:42,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:05:42,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4672 transitions. [2022-01-19 13:05:42,911 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7671592775041051 [2022-01-19 13:05:42,911 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4672 transitions. [2022-01-19 13:05:42,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4672 transitions. [2022-01-19 13:05:42,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:42,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4672 transitions. [2022-01-19 13:05:42,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.10344827586206) internal successors, (4672), 29 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:42,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:42,917 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:42,917 INFO L186 Difference]: Start difference. First operand has 697 places, 564 transitions, 10551 flow. Second operand 29 states and 4672 transitions. [2022-01-19 13:05:42,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 701 places, 666 transitions, 14178 flow [2022-01-19 13:05:43,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 681 places, 666 transitions, 13867 flow, removed 89 selfloop flow, removed 20 redundant places. [2022-01-19 13:05:43,491 INFO L242 Difference]: Finished difference. Result has 695 places, 576 transitions, 11009 flow [2022-01-19 13:05:43,491 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10297, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11009, PETRI_PLACES=695, PETRI_TRANSITIONS=576} [2022-01-19 13:05:43,492 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 508 predicate places. [2022-01-19 13:05:43,492 INFO L470 AbstractCegarLoop]: Abstraction has has 695 places, 576 transitions, 11009 flow [2022-01-19 13:05:43,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:43,492 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:43,492 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:43,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-19 13:05:43,493 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:43,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:43,493 INFO L85 PathProgramCache]: Analyzing trace with hash -2111767564, now seen corresponding path program 80 times [2022-01-19 13:05:43,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:43,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124820189] [2022-01-19 13:05:43,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:43,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:43,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:43,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:43,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124820189] [2022-01-19 13:05:43,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124820189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:43,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:43,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:43,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977980547] [2022-01-19 13:05:43,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:43,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:43,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:43,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:43,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:43,613 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:43,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 695 places, 576 transitions, 11009 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:43,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:43,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:43,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:45,008 INFO L129 PetriNetUnfolder]: 914/3093 cut-off events. [2022-01-19 13:05:45,008 INFO L130 PetriNetUnfolder]: For 86249/86269 co-relation queries the response was YES. [2022-01-19 13:05:45,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22427 conditions, 3093 events. 914/3093 cut-off events. For 86249/86269 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 24507 event pairs, 419 based on Foata normal form. 3/2993 useless extension candidates. Maximal degree in co-relation 22164. Up to 909 conditions per place. [2022-01-19 13:05:45,077 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 331 selfloop transitions, 159 changer transitions 59/690 dead transitions. [2022-01-19 13:05:45,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 690 transitions, 14970 flow [2022-01-19 13:05:45,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:05:45,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:05:45,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 13:05:45,080 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 13:05:45,080 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 13:05:45,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 13:05:45,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:45,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 13:05:45,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:45,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:45,087 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:45,087 INFO L186 Difference]: Start difference. First operand has 695 places, 576 transitions, 11009 flow. Second operand 30 states and 4819 transitions. [2022-01-19 13:05:45,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 690 transitions, 14970 flow [2022-01-19 13:05:45,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 690 transitions, 14479 flow, removed 98 selfloop flow, removed 16 redundant places. [2022-01-19 13:05:45,725 INFO L242 Difference]: Finished difference. Result has 710 places, 595 transitions, 11622 flow [2022-01-19 13:05:45,725 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10592, PETRI_DIFFERENCE_MINUEND_PLACES=665, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11622, PETRI_PLACES=710, PETRI_TRANSITIONS=595} [2022-01-19 13:05:45,726 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 523 predicate places. [2022-01-19 13:05:45,726 INFO L470 AbstractCegarLoop]: Abstraction has has 710 places, 595 transitions, 11622 flow [2022-01-19 13:05:45,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:45,726 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:45,726 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:45,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-01-19 13:05:45,727 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:45,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:45,727 INFO L85 PathProgramCache]: Analyzing trace with hash -361630990, now seen corresponding path program 81 times [2022-01-19 13:05:45,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:45,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880890139] [2022-01-19 13:05:45,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:45,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:45,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:45,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:45,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880890139] [2022-01-19 13:05:45,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880890139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:45,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:45,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:45,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600129475] [2022-01-19 13:05:45,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:45,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:45,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:45,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:45,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:45,852 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:45,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 710 places, 595 transitions, 11622 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:45,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:45,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:45,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:47,331 INFO L129 PetriNetUnfolder]: 934/3213 cut-off events. [2022-01-19 13:05:47,331 INFO L130 PetriNetUnfolder]: For 90486/90492 co-relation queries the response was YES. [2022-01-19 13:05:47,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23415 conditions, 3213 events. 934/3213 cut-off events. For 90486/90492 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25549 event pairs, 483 based on Foata normal form. 1/3109 useless extension candidates. Maximal degree in co-relation 23145. Up to 913 conditions per place. [2022-01-19 13:05:47,403 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 352 selfloop transitions, 154 changer transitions 58/705 dead transitions. [2022-01-19 13:05:47,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 705 transitions, 15440 flow [2022-01-19 13:05:47,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:05:47,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:05:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4825 transitions. [2022-01-19 13:05:47,405 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658730158730159 [2022-01-19 13:05:47,405 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4825 transitions. [2022-01-19 13:05:47,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4825 transitions. [2022-01-19 13:05:47,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:47,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4825 transitions. [2022-01-19 13:05:47,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.83333333333334) internal successors, (4825), 30 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:47,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:47,413 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:47,413 INFO L186 Difference]: Start difference. First operand has 710 places, 595 transitions, 11622 flow. Second operand 30 states and 4825 transitions. [2022-01-19 13:05:47,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 705 transitions, 15440 flow [2022-01-19 13:05:48,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 705 transitions, 14865 flow, removed 125 selfloop flow, removed 15 redundant places. [2022-01-19 13:05:48,110 INFO L242 Difference]: Finished difference. Result has 724 places, 612 transitions, 11993 flow [2022-01-19 13:05:48,111 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11121, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11993, PETRI_PLACES=724, PETRI_TRANSITIONS=612} [2022-01-19 13:05:48,111 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 537 predicate places. [2022-01-19 13:05:48,111 INFO L470 AbstractCegarLoop]: Abstraction has has 724 places, 612 transitions, 11993 flow [2022-01-19 13:05:48,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:48,111 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:48,111 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:48,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-01-19 13:05:48,112 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:48,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:48,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1199248144, now seen corresponding path program 82 times [2022-01-19 13:05:48,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:48,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041992916] [2022-01-19 13:05:48,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:48,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:48,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:48,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041992916] [2022-01-19 13:05:48,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041992916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:48,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:48,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:48,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253373790] [2022-01-19 13:05:48,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:48,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:48,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:48,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:48,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:48,224 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:48,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 724 places, 612 transitions, 11993 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:48,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:48,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:48,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:49,760 INFO L129 PetriNetUnfolder]: 942/3186 cut-off events. [2022-01-19 13:05:49,760 INFO L130 PetriNetUnfolder]: For 87852/87872 co-relation queries the response was YES. [2022-01-19 13:05:49,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23354 conditions, 3186 events. 942/3186 cut-off events. For 87852/87872 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25472 event pairs, 431 based on Foata normal form. 3/3086 useless extension candidates. Maximal degree in co-relation 23078. Up to 913 conditions per place. [2022-01-19 13:05:49,832 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 380 selfloop transitions, 148 changer transitions 71/740 dead transitions. [2022-01-19 13:05:49,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 740 transitions, 16649 flow [2022-01-19 13:05:49,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:05:49,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:05:49,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5773 transitions. [2022-01-19 13:05:49,835 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636243386243386 [2022-01-19 13:05:49,835 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5773 transitions. [2022-01-19 13:05:49,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5773 transitions. [2022-01-19 13:05:49,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:49,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5773 transitions. [2022-01-19 13:05:49,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.36111111111111) internal successors, (5773), 36 states have internal predecessors, (5773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:49,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:49,842 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:49,842 INFO L186 Difference]: Start difference. First operand has 724 places, 612 transitions, 11993 flow. Second operand 36 states and 5773 transitions. [2022-01-19 13:05:49,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 744 places, 740 transitions, 16649 flow [2022-01-19 13:05:50,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 732 places, 740 transitions, 16335 flow, removed 65 selfloop flow, removed 12 redundant places. [2022-01-19 13:05:50,548 INFO L242 Difference]: Finished difference. Result has 755 places, 628 transitions, 12696 flow [2022-01-19 13:05:50,548 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11728, PETRI_DIFFERENCE_MINUEND_PLACES=697, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=12696, PETRI_PLACES=755, PETRI_TRANSITIONS=628} [2022-01-19 13:05:50,548 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 568 predicate places. [2022-01-19 13:05:50,549 INFO L470 AbstractCegarLoop]: Abstraction has has 755 places, 628 transitions, 12696 flow [2022-01-19 13:05:50,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:50,549 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:50,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:50,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-01-19 13:05:50,549 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:50,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:50,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1474874722, now seen corresponding path program 83 times [2022-01-19 13:05:50,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:50,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789315828] [2022-01-19 13:05:50,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:50,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:50,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:50,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789315828] [2022-01-19 13:05:50,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789315828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:50,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:50,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:50,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406624304] [2022-01-19 13:05:50,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:50,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:50,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:50,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:50,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:50,662 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:50,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 755 places, 628 transitions, 12696 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:50,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:50,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:50,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:52,170 INFO L129 PetriNetUnfolder]: 929/3218 cut-off events. [2022-01-19 13:05:52,170 INFO L130 PetriNetUnfolder]: For 91226/91232 co-relation queries the response was YES. [2022-01-19 13:05:52,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23398 conditions, 3218 events. 929/3218 cut-off events. For 91226/91232 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 25677 event pairs, 466 based on Foata normal form. 1/3111 useless extension candidates. Maximal degree in co-relation 23108. Up to 924 conditions per place. [2022-01-19 13:05:52,243 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 367 selfloop transitions, 138 changer transitions 57/703 dead transitions. [2022-01-19 13:05:52,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 762 places, 703 transitions, 15883 flow [2022-01-19 13:05:52,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:05:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:05:52,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 13:05:52,246 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 13:05:52,246 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 13:05:52,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 13:05:52,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:52,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 13:05:52,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:52,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:52,252 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:52,252 INFO L186 Difference]: Start difference. First operand has 755 places, 628 transitions, 12696 flow. Second operand 30 states and 4819 transitions. [2022-01-19 13:05:52,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 762 places, 703 transitions, 15883 flow [2022-01-19 13:05:53,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 703 transitions, 15241 flow, removed 202 selfloop flow, removed 23 redundant places. [2022-01-19 13:05:53,046 INFO L242 Difference]: Finished difference. Result has 751 places, 616 transitions, 12277 flow [2022-01-19 13:05:53,046 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12278, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=12277, PETRI_PLACES=751, PETRI_TRANSITIONS=616} [2022-01-19 13:05:53,047 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 564 predicate places. [2022-01-19 13:05:53,047 INFO L470 AbstractCegarLoop]: Abstraction has has 751 places, 616 transitions, 12277 flow [2022-01-19 13:05:53,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:53,047 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:53,047 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:53,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-01-19 13:05:53,047 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:53,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:53,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1718307320, now seen corresponding path program 84 times [2022-01-19 13:05:53,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:53,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913064070] [2022-01-19 13:05:53,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:53,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:53,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:53,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:53,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913064070] [2022-01-19 13:05:53,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913064070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:53,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:53,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:53,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899621257] [2022-01-19 13:05:53,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:53,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:53,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:53,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:53,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:53,177 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:53,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 751 places, 616 transitions, 12277 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:53,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:53,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:53,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:54,631 INFO L129 PetriNetUnfolder]: 939/3241 cut-off events. [2022-01-19 13:05:54,631 INFO L130 PetriNetUnfolder]: For 85672/85678 co-relation queries the response was YES. [2022-01-19 13:05:54,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23374 conditions, 3241 events. 939/3241 cut-off events. For 85672/85678 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 26046 event pairs, 484 based on Foata normal form. 1/3134 useless extension candidates. Maximal degree in co-relation 23091. Up to 926 conditions per place. [2022-01-19 13:05:54,705 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 357 selfloop transitions, 163 changer transitions 55/716 dead transitions. [2022-01-19 13:05:54,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 716 transitions, 15870 flow [2022-01-19 13:05:54,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:05:54,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:05:54,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4829 transitions. [2022-01-19 13:05:54,708 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7665079365079365 [2022-01-19 13:05:54,708 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4829 transitions. [2022-01-19 13:05:54,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4829 transitions. [2022-01-19 13:05:54,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:54,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4829 transitions. [2022-01-19 13:05:54,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.96666666666667) internal successors, (4829), 30 states have internal predecessors, (4829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:54,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:54,714 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:54,714 INFO L186 Difference]: Start difference. First operand has 751 places, 616 transitions, 12277 flow. Second operand 30 states and 4829 transitions. [2022-01-19 13:05:54,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 753 places, 716 transitions, 15870 flow [2022-01-19 13:05:55,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 716 transitions, 15389 flow, removed 39 selfloop flow, removed 29 redundant places. [2022-01-19 13:05:55,407 INFO L242 Difference]: Finished difference. Result has 739 places, 632 transitions, 12755 flow [2022-01-19 13:05:55,407 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11867, PETRI_DIFFERENCE_MINUEND_PLACES=695, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=12755, PETRI_PLACES=739, PETRI_TRANSITIONS=632} [2022-01-19 13:05:55,407 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 552 predicate places. [2022-01-19 13:05:55,408 INFO L470 AbstractCegarLoop]: Abstraction has has 739 places, 632 transitions, 12755 flow [2022-01-19 13:05:55,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:55,408 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:55,408 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:55,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-01-19 13:05:55,408 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:55,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:55,409 INFO L85 PathProgramCache]: Analyzing trace with hash -748239972, now seen corresponding path program 85 times [2022-01-19 13:05:55,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:55,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430046291] [2022-01-19 13:05:55,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:55,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:55,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:55,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430046291] [2022-01-19 13:05:55,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430046291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:55,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:55,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:55,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595009295] [2022-01-19 13:05:55,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:55,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:55,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:55,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:55,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:55,560 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:55,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 739 places, 632 transitions, 12755 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:55,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:55,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:55,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:57,167 INFO L129 PetriNetUnfolder]: 943/3177 cut-off events. [2022-01-19 13:05:57,167 INFO L130 PetriNetUnfolder]: For 83522/83542 co-relation queries the response was YES. [2022-01-19 13:05:57,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23388 conditions, 3177 events. 943/3177 cut-off events. For 83522/83542 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25343 event pairs, 448 based on Foata normal form. 3/3072 useless extension candidates. Maximal degree in co-relation 23108. Up to 930 conditions per place. [2022-01-19 13:05:57,242 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 353 selfloop transitions, 173 changer transitions 55/722 dead transitions. [2022-01-19 13:05:57,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 752 places, 722 transitions, 16154 flow [2022-01-19 13:05:57,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:05:57,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:05:57,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4670 transitions. [2022-01-19 13:05:57,245 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7668308702791461 [2022-01-19 13:05:57,245 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4670 transitions. [2022-01-19 13:05:57,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4670 transitions. [2022-01-19 13:05:57,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:57,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4670 transitions. [2022-01-19 13:05:57,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.0344827586207) internal successors, (4670), 29 states have internal predecessors, (4670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:57,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:57,251 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:57,251 INFO L186 Difference]: Start difference. First operand has 739 places, 632 transitions, 12755 flow. Second operand 29 states and 4670 transitions. [2022-01-19 13:05:57,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 752 places, 722 transitions, 16154 flow [2022-01-19 13:05:57,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 741 places, 722 transitions, 15748 flow, removed 114 selfloop flow, removed 11 redundant places. [2022-01-19 13:05:57,926 INFO L242 Difference]: Finished difference. Result has 755 places, 643 transitions, 13183 flow [2022-01-19 13:05:57,927 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12458, PETRI_DIFFERENCE_MINUEND_PLACES=713, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=13183, PETRI_PLACES=755, PETRI_TRANSITIONS=643} [2022-01-19 13:05:57,927 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 568 predicate places. [2022-01-19 13:05:57,927 INFO L470 AbstractCegarLoop]: Abstraction has has 755 places, 643 transitions, 13183 flow [2022-01-19 13:05:57,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:57,927 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:05:57,927 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:05:57,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-01-19 13:05:57,927 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:05:57,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:05:57,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1659146500, now seen corresponding path program 86 times [2022-01-19 13:05:57,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:05:57,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051438836] [2022-01-19 13:05:57,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:05:57,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:05:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:05:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:05:58,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:05:58,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051438836] [2022-01-19 13:05:58,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051438836] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:05:58,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:05:58,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:05:58,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502511961] [2022-01-19 13:05:58,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:05:58,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:05:58,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:05:58,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:05:58,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:05:58,049 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:05:58,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 755 places, 643 transitions, 13183 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:58,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:05:58,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:05:58,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:05:59,555 INFO L129 PetriNetUnfolder]: 936/3169 cut-off events. [2022-01-19 13:05:59,556 INFO L130 PetriNetUnfolder]: For 84331/84351 co-relation queries the response was YES. [2022-01-19 13:05:59,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23245 conditions, 3169 events. 936/3169 cut-off events. For 84331/84351 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 25329 event pairs, 429 based on Foata normal form. 3/3065 useless extension candidates. Maximal degree in co-relation 22959. Up to 932 conditions per place. [2022-01-19 13:05:59,630 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 390 selfloop transitions, 148 changer transitions 57/736 dead transitions. [2022-01-19 13:05:59,630 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 769 places, 736 transitions, 16710 flow [2022-01-19 13:05:59,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:05:59,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:05:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4668 transitions. [2022-01-19 13:05:59,632 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7665024630541872 [2022-01-19 13:05:59,632 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4668 transitions. [2022-01-19 13:05:59,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4668 transitions. [2022-01-19 13:05:59,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:05:59,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4668 transitions. [2022-01-19 13:05:59,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.9655172413793) internal successors, (4668), 29 states have internal predecessors, (4668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:59,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:59,638 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:05:59,638 INFO L186 Difference]: Start difference. First operand has 755 places, 643 transitions, 13183 flow. Second operand 29 states and 4668 transitions. [2022-01-19 13:05:59,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 769 places, 736 transitions, 16710 flow [2022-01-19 13:06:00,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 756 places, 736 transitions, 16380 flow, removed 53 selfloop flow, removed 13 redundant places. [2022-01-19 13:06:00,398 INFO L242 Difference]: Finished difference. Result has 769 places, 649 transitions, 13397 flow [2022-01-19 13:06:00,398 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12880, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=13397, PETRI_PLACES=769, PETRI_TRANSITIONS=649} [2022-01-19 13:06:00,398 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 582 predicate places. [2022-01-19 13:06:00,398 INFO L470 AbstractCegarLoop]: Abstraction has has 769 places, 649 transitions, 13397 flow [2022-01-19 13:06:00,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:00,399 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:00,399 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:00,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-01-19 13:06:00,399 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:00,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:00,399 INFO L85 PathProgramCache]: Analyzing trace with hash -809966992, now seen corresponding path program 87 times [2022-01-19 13:06:00,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:00,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944606988] [2022-01-19 13:06:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:00,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:00,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:00,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944606988] [2022-01-19 13:06:00,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944606988] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:00,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:00,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:00,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128693399] [2022-01-19 13:06:00,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:00,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:00,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:00,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:00,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:00,534 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:00,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 769 places, 649 transitions, 13397 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:00,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:00,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:00,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:02,047 INFO L129 PetriNetUnfolder]: 939/3266 cut-off events. [2022-01-19 13:06:02,047 INFO L130 PetriNetUnfolder]: For 88164/88170 co-relation queries the response was YES. [2022-01-19 13:06:02,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23607 conditions, 3266 events. 939/3266 cut-off events. For 88164/88170 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 26308 event pairs, 458 based on Foata normal form. 1/3156 useless extension candidates. Maximal degree in co-relation 23316. Up to 934 conditions per place. [2022-01-19 13:06:02,125 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 371 selfloop transitions, 178 changer transitions 56/746 dead transitions. [2022-01-19 13:06:02,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 783 places, 746 transitions, 17071 flow [2022-01-19 13:06:02,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:06:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:06:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2022-01-19 13:06:02,128 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2022-01-19 13:06:02,128 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2022-01-19 13:06:02,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2022-01-19 13:06:02,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:02,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2022-01-19 13:06:02,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:02,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:02,134 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:02,134 INFO L186 Difference]: Start difference. First operand has 769 places, 649 transitions, 13397 flow. Second operand 29 states and 4664 transitions. [2022-01-19 13:06:02,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 783 places, 746 transitions, 17071 flow [2022-01-19 13:06:02,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 766 places, 746 transitions, 16646 flow, removed 96 selfloop flow, removed 17 redundant places. [2022-01-19 13:06:02,915 INFO L242 Difference]: Finished difference. Result has 780 places, 660 transitions, 13779 flow [2022-01-19 13:06:02,916 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13041, PETRI_DIFFERENCE_MINUEND_PLACES=738, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=13779, PETRI_PLACES=780, PETRI_TRANSITIONS=660} [2022-01-19 13:06:02,916 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 593 predicate places. [2022-01-19 13:06:02,916 INFO L470 AbstractCegarLoop]: Abstraction has has 780 places, 660 transitions, 13779 flow [2022-01-19 13:06:02,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:02,916 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:02,916 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:02,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-01-19 13:06:02,916 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:02,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:02,917 INFO L85 PathProgramCache]: Analyzing trace with hash 145920860, now seen corresponding path program 88 times [2022-01-19 13:06:02,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:02,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858604062] [2022-01-19 13:06:02,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:02,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:03,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:03,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:03,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858604062] [2022-01-19 13:06:03,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858604062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:03,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:03,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:03,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816507026] [2022-01-19 13:06:03,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:03,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:03,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:03,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:03,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:03,040 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:03,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 660 transitions, 13779 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:03,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:03,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:03,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:04,528 INFO L129 PetriNetUnfolder]: 940/3189 cut-off events. [2022-01-19 13:06:04,528 INFO L130 PetriNetUnfolder]: For 88570/88590 co-relation queries the response was YES. [2022-01-19 13:06:04,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23614 conditions, 3189 events. 940/3189 cut-off events. For 88570/88590 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25433 event pairs, 432 based on Foata normal form. 3/3085 useless extension candidates. Maximal degree in co-relation 23320. Up to 937 conditions per place. [2022-01-19 13:06:04,603 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 408 selfloop transitions, 151 changer transitions 58/758 dead transitions. [2022-01-19 13:06:04,603 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 793 places, 758 transitions, 17570 flow [2022-01-19 13:06:04,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:06:04,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:06:04,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4511 transitions. [2022-01-19 13:06:04,606 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7671768707482993 [2022-01-19 13:06:04,606 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4511 transitions. [2022-01-19 13:06:04,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4511 transitions. [2022-01-19 13:06:04,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:04,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4511 transitions. [2022-01-19 13:06:04,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.10714285714286) internal successors, (4511), 28 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:04,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:04,611 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:04,611 INFO L186 Difference]: Start difference. First operand has 780 places, 660 transitions, 13779 flow. Second operand 28 states and 4511 transitions. [2022-01-19 13:06:04,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 793 places, 758 transitions, 17570 flow [2022-01-19 13:06:05,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 780 places, 758 transitions, 17157 flow, removed 70 selfloop flow, removed 13 redundant places. [2022-01-19 13:06:05,544 INFO L242 Difference]: Finished difference. Result has 792 places, 668 transitions, 13980 flow [2022-01-19 13:06:05,545 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13412, PETRI_DIFFERENCE_MINUEND_PLACES=753, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=13980, PETRI_PLACES=792, PETRI_TRANSITIONS=668} [2022-01-19 13:06:05,545 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 605 predicate places. [2022-01-19 13:06:05,545 INFO L470 AbstractCegarLoop]: Abstraction has has 792 places, 668 transitions, 13980 flow [2022-01-19 13:06:05,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:05,546 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:05,546 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:05,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-01-19 13:06:05,546 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:05,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:05,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1583574768, now seen corresponding path program 89 times [2022-01-19 13:06:05,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:05,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303512080] [2022-01-19 13:06:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:05,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:05,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:05,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303512080] [2022-01-19 13:06:05,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303512080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:05,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:05,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:05,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091531932] [2022-01-19 13:06:05,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:05,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:05,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:05,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:05,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:05,665 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:05,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 668 transitions, 13980 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:05,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:05,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:05,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:07,216 INFO L129 PetriNetUnfolder]: 960/3234 cut-off events. [2022-01-19 13:06:07,216 INFO L130 PetriNetUnfolder]: For 92213/92233 co-relation queries the response was YES. [2022-01-19 13:06:07,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24328 conditions, 3234 events. 960/3234 cut-off events. For 92213/92233 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25903 event pairs, 437 based on Foata normal form. 3/3131 useless extension candidates. Maximal degree in co-relation 24030. Up to 942 conditions per place. [2022-01-19 13:06:07,294 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 357 selfloop transitions, 217 changer transitions 54/769 dead transitions. [2022-01-19 13:06:07,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 769 transitions, 17881 flow [2022-01-19 13:06:07,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:06:07,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:06:07,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4821 transitions. [2022-01-19 13:06:07,297 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652380952380953 [2022-01-19 13:06:07,297 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4821 transitions. [2022-01-19 13:06:07,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4821 transitions. [2022-01-19 13:06:07,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:07,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4821 transitions. [2022-01-19 13:06:07,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.7) internal successors, (4821), 30 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:07,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:07,303 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:07,303 INFO L186 Difference]: Start difference. First operand has 792 places, 668 transitions, 13980 flow. Second operand 30 states and 4821 transitions. [2022-01-19 13:06:07,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 808 places, 769 transitions, 17881 flow [2022-01-19 13:06:08,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 793 places, 769 transitions, 17516 flow, removed 56 selfloop flow, removed 15 redundant places. [2022-01-19 13:06:08,124 INFO L242 Difference]: Finished difference. Result has 809 places, 685 transitions, 14790 flow [2022-01-19 13:06:08,124 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13657, PETRI_DIFFERENCE_MINUEND_PLACES=764, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=14790, PETRI_PLACES=809, PETRI_TRANSITIONS=685} [2022-01-19 13:06:08,124 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 622 predicate places. [2022-01-19 13:06:08,125 INFO L470 AbstractCegarLoop]: Abstraction has has 809 places, 685 transitions, 14790 flow [2022-01-19 13:06:08,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:08,125 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:08,125 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:08,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-01-19 13:06:08,125 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:08,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:08,126 INFO L85 PathProgramCache]: Analyzing trace with hash -993283182, now seen corresponding path program 90 times [2022-01-19 13:06:08,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:08,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560058322] [2022-01-19 13:06:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:08,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:08,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:08,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560058322] [2022-01-19 13:06:08,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560058322] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:08,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:08,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:08,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974942895] [2022-01-19 13:06:08,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:08,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:08,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:08,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:08,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:08,246 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:08,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 685 transitions, 14790 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:08,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:08,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:08,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:09,748 INFO L129 PetriNetUnfolder]: 955/3323 cut-off events. [2022-01-19 13:06:09,748 INFO L130 PetriNetUnfolder]: For 99254/99260 co-relation queries the response was YES. [2022-01-19 13:06:09,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24619 conditions, 3323 events. 955/3323 cut-off events. For 99254/99260 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 27026 event pairs, 439 based on Foata normal form. 1/3218 useless extension candidates. Maximal degree in co-relation 24314. Up to 946 conditions per place. [2022-01-19 13:06:09,829 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 373 selfloop transitions, 217 changer transitions 60/791 dead transitions. [2022-01-19 13:06:09,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 820 places, 791 transitions, 18989 flow [2022-01-19 13:06:09,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 13:06:09,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 13:06:09,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4344 transitions. [2022-01-19 13:06:09,831 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7661375661375661 [2022-01-19 13:06:09,831 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4344 transitions. [2022-01-19 13:06:09,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4344 transitions. [2022-01-19 13:06:09,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:09,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4344 transitions. [2022-01-19 13:06:09,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.88888888888889) internal successors, (4344), 27 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:09,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:09,837 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:09,837 INFO L186 Difference]: Start difference. First operand has 809 places, 685 transitions, 14790 flow. Second operand 27 states and 4344 transitions. [2022-01-19 13:06:09,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 820 places, 791 transitions, 18989 flow [2022-01-19 13:06:10,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 807 places, 791 transitions, 18392 flow, removed 191 selfloop flow, removed 13 redundant places. [2022-01-19 13:06:10,711 INFO L242 Difference]: Finished difference. Result has 817 places, 689 transitions, 14909 flow [2022-01-19 13:06:10,711 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14333, PETRI_DIFFERENCE_MINUEND_PLACES=781, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=14909, PETRI_PLACES=817, PETRI_TRANSITIONS=689} [2022-01-19 13:06:10,711 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 630 predicate places. [2022-01-19 13:06:10,711 INFO L470 AbstractCegarLoop]: Abstraction has has 817 places, 689 transitions, 14909 flow [2022-01-19 13:06:10,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:10,712 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:10,712 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:10,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-01-19 13:06:10,712 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:10,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:10,712 INFO L85 PathProgramCache]: Analyzing trace with hash 292811292, now seen corresponding path program 91 times [2022-01-19 13:06:10,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:10,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380237115] [2022-01-19 13:06:10,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:10,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:10,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:10,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:10,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380237115] [2022-01-19 13:06:10,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380237115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:10,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:10,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:10,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441973227] [2022-01-19 13:06:10,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:10,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:10,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:10,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:10,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:10,831 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:10,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 817 places, 689 transitions, 14909 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:10,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:10,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:10,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:12,330 INFO L129 PetriNetUnfolder]: 934/3163 cut-off events. [2022-01-19 13:06:12,330 INFO L130 PetriNetUnfolder]: For 92427/92447 co-relation queries the response was YES. [2022-01-19 13:06:12,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23809 conditions, 3163 events. 934/3163 cut-off events. For 92427/92447 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 25150 event pairs, 419 based on Foata normal form. 3/3060 useless extension candidates. Maximal degree in co-relation 23503. Up to 943 conditions per place. [2022-01-19 13:06:12,410 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 420 selfloop transitions, 132 changer transitions 61/754 dead transitions. [2022-01-19 13:06:12,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 834 places, 754 transitions, 17895 flow [2022-01-19 13:06:12,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:06:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:06:12,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4813 transitions. [2022-01-19 13:06:12,413 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763968253968254 [2022-01-19 13:06:12,413 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4813 transitions. [2022-01-19 13:06:12,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4813 transitions. [2022-01-19 13:06:12,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:12,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4813 transitions. [2022-01-19 13:06:12,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:12,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:12,418 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:12,419 INFO L186 Difference]: Start difference. First operand has 817 places, 689 transitions, 14909 flow. Second operand 30 states and 4813 transitions. [2022-01-19 13:06:12,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 834 places, 754 transitions, 17895 flow [2022-01-19 13:06:13,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 814 places, 754 transitions, 17270 flow, removed 75 selfloop flow, removed 20 redundant places. [2022-01-19 13:06:13,272 INFO L242 Difference]: Finished difference. Result has 823 places, 662 transitions, 13894 flow [2022-01-19 13:06:13,273 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14338, PETRI_DIFFERENCE_MINUEND_PLACES=785, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13894, PETRI_PLACES=823, PETRI_TRANSITIONS=662} [2022-01-19 13:06:13,273 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 636 predicate places. [2022-01-19 13:06:13,273 INFO L470 AbstractCegarLoop]: Abstraction has has 823 places, 662 transitions, 13894 flow [2022-01-19 13:06:13,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:13,274 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:13,274 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:13,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-01-19 13:06:13,274 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:13,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:13,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1500848246, now seen corresponding path program 92 times [2022-01-19 13:06:13,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:13,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215449482] [2022-01-19 13:06:13,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:13,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:13,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:13,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215449482] [2022-01-19 13:06:13,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215449482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:13,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:13,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:13,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583118601] [2022-01-19 13:06:13,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:13,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:13,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:13,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:13,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:13,412 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:13,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 823 places, 662 transitions, 13894 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:13,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:13,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:13,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:15,262 INFO L129 PetriNetUnfolder]: 951/3245 cut-off events. [2022-01-19 13:06:15,263 INFO L130 PetriNetUnfolder]: For 96091/96111 co-relation queries the response was YES. [2022-01-19 13:06:15,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24174 conditions, 3245 events. 951/3245 cut-off events. For 96091/96111 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 26104 event pairs, 416 based on Foata normal form. 3/3145 useless extension candidates. Maximal degree in co-relation 23870. Up to 921 conditions per place. [2022-01-19 13:06:15,343 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 405 selfloop transitions, 181 changer transitions 91/818 dead transitions. [2022-01-19 13:06:15,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 830 places, 818 transitions, 19702 flow [2022-01-19 13:06:15,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 13:06:15,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 13:06:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6866 transitions. [2022-01-19 13:06:15,347 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7603543743078627 [2022-01-19 13:06:15,347 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6866 transitions. [2022-01-19 13:06:15,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6866 transitions. [2022-01-19 13:06:15,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:15,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6866 transitions. [2022-01-19 13:06:15,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.67441860465115) internal successors, (6866), 43 states have internal predecessors, (6866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:15,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:15,355 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:15,356 INFO L186 Difference]: Start difference. First operand has 823 places, 662 transitions, 13894 flow. Second operand 43 states and 6866 transitions. [2022-01-19 13:06:15,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 830 places, 818 transitions, 19702 flow [2022-01-19 13:06:16,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 802 places, 818 transitions, 18929 flow, removed 49 selfloop flow, removed 28 redundant places. [2022-01-19 13:06:16,195 INFO L242 Difference]: Finished difference. Result has 834 places, 679 transitions, 14604 flow [2022-01-19 13:06:16,196 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13409, PETRI_DIFFERENCE_MINUEND_PLACES=760, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=14604, PETRI_PLACES=834, PETRI_TRANSITIONS=679} [2022-01-19 13:06:16,196 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 647 predicate places. [2022-01-19 13:06:16,196 INFO L470 AbstractCegarLoop]: Abstraction has has 834 places, 679 transitions, 14604 flow [2022-01-19 13:06:16,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:16,196 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:16,196 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:16,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-01-19 13:06:16,196 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:16,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:16,197 INFO L85 PathProgramCache]: Analyzing trace with hash 544131094, now seen corresponding path program 93 times [2022-01-19 13:06:16,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:16,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050752634] [2022-01-19 13:06:16,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:16,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:16,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:16,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:16,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050752634] [2022-01-19 13:06:16,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050752634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:16,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:16,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:16,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056700367] [2022-01-19 13:06:16,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:16,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:16,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:16,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:16,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:16,333 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:16,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 834 places, 679 transitions, 14604 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:16,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:16,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:16,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:18,118 INFO L129 PetriNetUnfolder]: 949/3302 cut-off events. [2022-01-19 13:06:18,119 INFO L130 PetriNetUnfolder]: For 98131/98137 co-relation queries the response was YES. [2022-01-19 13:06:18,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24497 conditions, 3302 events. 949/3302 cut-off events. For 98131/98137 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 26688 event pairs, 461 based on Foata normal form. 1/3195 useless extension candidates. Maximal degree in co-relation 24177. Up to 966 conditions per place. [2022-01-19 13:06:18,209 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 403 selfloop transitions, 175 changer transitions 55/774 dead transitions. [2022-01-19 13:06:18,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 832 places, 774 transitions, 18615 flow [2022-01-19 13:06:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:06:18,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:06:18,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4666 transitions. [2022-01-19 13:06:18,211 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7661740558292283 [2022-01-19 13:06:18,211 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4666 transitions. [2022-01-19 13:06:18,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4666 transitions. [2022-01-19 13:06:18,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:18,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4666 transitions. [2022-01-19 13:06:18,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.89655172413794) internal successors, (4666), 29 states have internal predecessors, (4666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:18,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:18,217 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:18,217 INFO L186 Difference]: Start difference. First operand has 834 places, 679 transitions, 14604 flow. Second operand 29 states and 4666 transitions. [2022-01-19 13:06:18,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 832 places, 774 transitions, 18615 flow [2022-01-19 13:06:19,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 796 places, 774 transitions, 17703 flow, removed 274 selfloop flow, removed 36 redundant places. [2022-01-19 13:06:19,125 INFO L242 Difference]: Finished difference. Result has 810 places, 691 transitions, 14867 flow [2022-01-19 13:06:19,125 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14085, PETRI_DIFFERENCE_MINUEND_PLACES=768, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=14867, PETRI_PLACES=810, PETRI_TRANSITIONS=691} [2022-01-19 13:06:19,125 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 623 predicate places. [2022-01-19 13:06:19,125 INFO L470 AbstractCegarLoop]: Abstraction has has 810 places, 691 transitions, 14867 flow [2022-01-19 13:06:19,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:19,126 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:19,126 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:19,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-01-19 13:06:19,126 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:19,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:19,126 INFO L85 PathProgramCache]: Analyzing trace with hash 480670358, now seen corresponding path program 94 times [2022-01-19 13:06:19,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:19,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810762413] [2022-01-19 13:06:19,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:19,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:19,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:19,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810762413] [2022-01-19 13:06:19,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810762413] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:19,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:19,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:19,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856424217] [2022-01-19 13:06:19,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:19,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:19,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:19,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:19,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:19,236 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:19,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 691 transitions, 14867 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:19,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:19,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:19,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:20,720 INFO L129 PetriNetUnfolder]: 921/3139 cut-off events. [2022-01-19 13:06:20,720 INFO L130 PetriNetUnfolder]: For 85585/85605 co-relation queries the response was YES. [2022-01-19 13:06:20,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22952 conditions, 3139 events. 921/3139 cut-off events. For 85585/85605 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 25024 event pairs, 402 based on Foata normal form. 3/3037 useless extension candidates. Maximal degree in co-relation 22650. Up to 964 conditions per place. [2022-01-19 13:06:20,798 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 362 selfloop transitions, 199 changer transitions 64/766 dead transitions. [2022-01-19 13:06:20,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 825 places, 766 transitions, 17906 flow [2022-01-19 13:06:20,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:06:20,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:06:20,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4802 transitions. [2022-01-19 13:06:20,800 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622222222222222 [2022-01-19 13:06:20,800 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4802 transitions. [2022-01-19 13:06:20,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4802 transitions. [2022-01-19 13:06:20,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:20,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4802 transitions. [2022-01-19 13:06:20,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.06666666666666) internal successors, (4802), 30 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:20,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:20,806 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:20,806 INFO L186 Difference]: Start difference. First operand has 810 places, 691 transitions, 14867 flow. Second operand 30 states and 4802 transitions. [2022-01-19 13:06:20,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 825 places, 766 transitions, 17906 flow [2022-01-19 13:06:21,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 766 transitions, 17532 flow, removed 79 selfloop flow, removed 13 redundant places. [2022-01-19 13:06:21,648 INFO L242 Difference]: Finished difference. Result has 823 places, 657 transitions, 13962 flow [2022-01-19 13:06:21,648 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14522, PETRI_DIFFERENCE_MINUEND_PLACES=783, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13962, PETRI_PLACES=823, PETRI_TRANSITIONS=657} [2022-01-19 13:06:21,649 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 636 predicate places. [2022-01-19 13:06:21,649 INFO L470 AbstractCegarLoop]: Abstraction has has 823 places, 657 transitions, 13962 flow [2022-01-19 13:06:21,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:21,649 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:21,649 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:21,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-01-19 13:06:21,649 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:21,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:21,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1195198250, now seen corresponding path program 95 times [2022-01-19 13:06:21,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:21,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319447528] [2022-01-19 13:06:21,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:21,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:21,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:21,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319447528] [2022-01-19 13:06:21,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319447528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:21,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:21,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:21,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817327318] [2022-01-19 13:06:21,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:21,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:21,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:21,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:21,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:21,762 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:21,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 823 places, 657 transitions, 13962 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:21,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:21,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:21,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:23,440 INFO L129 PetriNetUnfolder]: 953/3241 cut-off events. [2022-01-19 13:06:23,440 INFO L130 PetriNetUnfolder]: For 93708/93728 co-relation queries the response was YES. [2022-01-19 13:06:23,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24195 conditions, 3241 events. 953/3241 cut-off events. For 93708/93728 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 26056 event pairs, 423 based on Foata normal form. 3/3138 useless extension candidates. Maximal degree in co-relation 23890. Up to 966 conditions per place. [2022-01-19 13:06:23,521 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 396 selfloop transitions, 179 changer transitions 69/785 dead transitions. [2022-01-19 13:06:23,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 819 places, 785 transitions, 18694 flow [2022-01-19 13:06:23,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:06:23,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:06:23,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6082 transitions. [2022-01-19 13:06:23,524 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621553884711779 [2022-01-19 13:06:23,524 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6082 transitions. [2022-01-19 13:06:23,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6082 transitions. [2022-01-19 13:06:23,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:23,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6082 transitions. [2022-01-19 13:06:23,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.05263157894737) internal successors, (6082), 38 states have internal predecessors, (6082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:23,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:23,532 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:23,532 INFO L186 Difference]: Start difference. First operand has 823 places, 657 transitions, 13962 flow. Second operand 38 states and 6082 transitions. [2022-01-19 13:06:23,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 819 places, 785 transitions, 18694 flow [2022-01-19 13:06:24,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 787 places, 785 transitions, 17659 flow, removed 42 selfloop flow, removed 32 redundant places. [2022-01-19 13:06:24,329 INFO L242 Difference]: Finished difference. Result has 810 places, 677 transitions, 14260 flow [2022-01-19 13:06:24,329 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13131, PETRI_DIFFERENCE_MINUEND_PLACES=750, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14260, PETRI_PLACES=810, PETRI_TRANSITIONS=677} [2022-01-19 13:06:24,329 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 623 predicate places. [2022-01-19 13:06:24,330 INFO L470 AbstractCegarLoop]: Abstraction has has 810 places, 677 transitions, 14260 flow [2022-01-19 13:06:24,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:24,330 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:24,330 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:24,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-01-19 13:06:24,330 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:24,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:24,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1704849108, now seen corresponding path program 96 times [2022-01-19 13:06:24,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:24,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019177951] [2022-01-19 13:06:24,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:24,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:24,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:24,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019177951] [2022-01-19 13:06:24,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019177951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:24,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:24,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:24,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124498367] [2022-01-19 13:06:24,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:24,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:24,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:24,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:24,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:24,451 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:24,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 677 transitions, 14260 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:24,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:24,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:24,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:26,160 INFO L129 PetriNetUnfolder]: 954/3253 cut-off events. [2022-01-19 13:06:26,161 INFO L130 PetriNetUnfolder]: For 90401/90421 co-relation queries the response was YES. [2022-01-19 13:06:26,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23962 conditions, 3253 events. 954/3253 cut-off events. For 90401/90421 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 26265 event pairs, 424 based on Foata normal form. 3/3147 useless extension candidates. Maximal degree in co-relation 23654. Up to 974 conditions per place. [2022-01-19 13:06:26,241 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 403 selfloop transitions, 173 changer transitions 68/785 dead transitions. [2022-01-19 13:06:26,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 785 transitions, 18405 flow [2022-01-19 13:06:26,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:06:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:06:26,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5928 transitions. [2022-01-19 13:06:26,244 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629343629343629 [2022-01-19 13:06:26,244 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5928 transitions. [2022-01-19 13:06:26,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5928 transitions. [2022-01-19 13:06:26,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:26,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5928 transitions. [2022-01-19 13:06:26,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.21621621621622) internal successors, (5928), 37 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:26,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:26,252 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:26,252 INFO L186 Difference]: Start difference. First operand has 810 places, 677 transitions, 14260 flow. Second operand 37 states and 5928 transitions. [2022-01-19 13:06:26,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 785 transitions, 18405 flow [2022-01-19 13:06:27,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 802 places, 785 transitions, 17859 flow, removed 121 selfloop flow, removed 20 redundant places. [2022-01-19 13:06:27,083 INFO L242 Difference]: Finished difference. Result has 824 places, 684 transitions, 14561 flow [2022-01-19 13:06:27,083 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13874, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=14561, PETRI_PLACES=824, PETRI_TRANSITIONS=684} [2022-01-19 13:06:27,083 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 637 predicate places. [2022-01-19 13:06:27,083 INFO L470 AbstractCegarLoop]: Abstraction has has 824 places, 684 transitions, 14561 flow [2022-01-19 13:06:27,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:27,084 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:27,084 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:27,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-01-19 13:06:27,084 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:27,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:27,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1787118898, now seen corresponding path program 97 times [2022-01-19 13:06:27,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:27,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754126484] [2022-01-19 13:06:27,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:27,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:27,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:27,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754126484] [2022-01-19 13:06:27,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754126484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:27,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:27,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:27,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707787818] [2022-01-19 13:06:27,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:27,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:27,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:27,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:27,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:27,225 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:27,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 684 transitions, 14561 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:27,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:27,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:27,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:28,742 INFO L129 PetriNetUnfolder]: 949/3246 cut-off events. [2022-01-19 13:06:28,742 INFO L130 PetriNetUnfolder]: For 90892/90912 co-relation queries the response was YES. [2022-01-19 13:06:28,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23831 conditions, 3246 events. 949/3246 cut-off events. For 90892/90912 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 26201 event pairs, 422 based on Foata normal form. 3/3138 useless extension candidates. Maximal degree in co-relation 23517. Up to 992 conditions per place. [2022-01-19 13:06:28,836 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 394 selfloop transitions, 184 changer transitions 60/779 dead transitions. [2022-01-19 13:06:28,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 828 places, 779 transitions, 18312 flow [2022-01-19 13:06:28,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:06:28,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:06:28,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4507 transitions. [2022-01-19 13:06:28,838 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7664965986394557 [2022-01-19 13:06:28,838 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4507 transitions. [2022-01-19 13:06:28,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4507 transitions. [2022-01-19 13:06:28,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:28,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4507 transitions. [2022-01-19 13:06:28,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.96428571428572) internal successors, (4507), 28 states have internal predecessors, (4507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:28,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:28,844 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:28,844 INFO L186 Difference]: Start difference. First operand has 824 places, 684 transitions, 14561 flow. Second operand 28 states and 4507 transitions. [2022-01-19 13:06:28,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 828 places, 779 transitions, 18312 flow [2022-01-19 13:06:29,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 802 places, 779 transitions, 17864 flow, removed 97 selfloop flow, removed 26 redundant places. [2022-01-19 13:06:29,687 INFO L242 Difference]: Finished difference. Result has 814 places, 692 transitions, 14858 flow [2022-01-19 13:06:29,687 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14183, PETRI_DIFFERENCE_MINUEND_PLACES=775, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=14858, PETRI_PLACES=814, PETRI_TRANSITIONS=692} [2022-01-19 13:06:29,687 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 627 predicate places. [2022-01-19 13:06:29,687 INFO L470 AbstractCegarLoop]: Abstraction has has 814 places, 692 transitions, 14858 flow [2022-01-19 13:06:29,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:29,688 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:29,688 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:29,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-01-19 13:06:29,688 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:29,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:29,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1770312740, now seen corresponding path program 98 times [2022-01-19 13:06:29,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:29,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793860758] [2022-01-19 13:06:29,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:29,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:29,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:29,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:29,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793860758] [2022-01-19 13:06:29,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793860758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:29,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:29,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:29,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189366431] [2022-01-19 13:06:29,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:29,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:29,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:29,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:29,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:29,822 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:29,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 814 places, 692 transitions, 14858 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:29,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:29,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:29,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:31,317 INFO L129 PetriNetUnfolder]: 943/3232 cut-off events. [2022-01-19 13:06:31,317 INFO L130 PetriNetUnfolder]: For 88901/88921 co-relation queries the response was YES. [2022-01-19 13:06:31,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23512 conditions, 3232 events. 943/3232 cut-off events. For 88901/88921 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 26042 event pairs, 421 based on Foata normal form. 3/3127 useless extension candidates. Maximal degree in co-relation 23207. Up to 988 conditions per place. [2022-01-19 13:06:31,398 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 396 selfloop transitions, 185 changer transitions 60/782 dead transitions. [2022-01-19 13:06:31,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 830 places, 782 transitions, 18313 flow [2022-01-19 13:06:31,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:06:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:06:31,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-01-19 13:06:31,400 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-01-19 13:06:31,400 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-01-19 13:06:31,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-01-19 13:06:31,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:31,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-01-19 13:06:31,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:31,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:31,406 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:31,406 INFO L186 Difference]: Start difference. First operand has 814 places, 692 transitions, 14858 flow. Second operand 30 states and 4820 transitions. [2022-01-19 13:06:31,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 830 places, 782 transitions, 18313 flow [2022-01-19 13:06:32,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 815 places, 782 transitions, 17844 flow, removed 77 selfloop flow, removed 15 redundant places. [2022-01-19 13:06:32,207 INFO L242 Difference]: Finished difference. Result has 828 places, 698 transitions, 15035 flow [2022-01-19 13:06:32,207 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14444, PETRI_DIFFERENCE_MINUEND_PLACES=786, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15035, PETRI_PLACES=828, PETRI_TRANSITIONS=698} [2022-01-19 13:06:32,207 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 641 predicate places. [2022-01-19 13:06:32,208 INFO L470 AbstractCegarLoop]: Abstraction has has 828 places, 698 transitions, 15035 flow [2022-01-19 13:06:32,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:32,208 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:32,209 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:32,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-01-19 13:06:32,209 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:32,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:32,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1002110748, now seen corresponding path program 99 times [2022-01-19 13:06:32,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:32,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832828990] [2022-01-19 13:06:32,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:32,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:32,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:32,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:32,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832828990] [2022-01-19 13:06:32,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832828990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:32,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:32,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:32,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006054907] [2022-01-19 13:06:32,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:32,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:32,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:32,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:32,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:32,352 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:32,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 828 places, 698 transitions, 15035 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:32,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:32,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:32,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:33,961 INFO L129 PetriNetUnfolder]: 933/3203 cut-off events. [2022-01-19 13:06:33,961 INFO L130 PetriNetUnfolder]: For 89243/89263 co-relation queries the response was YES. [2022-01-19 13:06:34,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23185 conditions, 3203 events. 933/3203 cut-off events. For 89243/89263 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 25788 event pairs, 416 based on Foata normal form. 3/3095 useless extension candidates. Maximal degree in co-relation 22876. Up to 987 conditions per place. [2022-01-19 13:06:34,035 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 399 selfloop transitions, 172 changer transitions 59/771 dead transitions. [2022-01-19 13:06:34,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 842 places, 771 transitions, 18079 flow [2022-01-19 13:06:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:06:34,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:06:34,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4811 transitions. [2022-01-19 13:06:34,038 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636507936507937 [2022-01-19 13:06:34,038 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4811 transitions. [2022-01-19 13:06:34,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4811 transitions. [2022-01-19 13:06:34,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:34,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4811 transitions. [2022-01-19 13:06:34,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.36666666666667) internal successors, (4811), 30 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:34,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:34,043 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:34,044 INFO L186 Difference]: Start difference. First operand has 828 places, 698 transitions, 15035 flow. Second operand 30 states and 4811 transitions. [2022-01-19 13:06:34,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 842 places, 771 transitions, 18079 flow [2022-01-19 13:06:34,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 828 places, 771 transitions, 17719 flow, removed 71 selfloop flow, removed 14 redundant places. [2022-01-19 13:06:34,846 INFO L242 Difference]: Finished difference. Result has 840 places, 686 transitions, 14740 flow [2022-01-19 13:06:34,847 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14710, PETRI_DIFFERENCE_MINUEND_PLACES=799, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=14740, PETRI_PLACES=840, PETRI_TRANSITIONS=686} [2022-01-19 13:06:34,847 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 653 predicate places. [2022-01-19 13:06:34,847 INFO L470 AbstractCegarLoop]: Abstraction has has 840 places, 686 transitions, 14740 flow [2022-01-19 13:06:34,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:34,847 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:34,847 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:34,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-01-19 13:06:34,848 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:34,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:34,848 INFO L85 PathProgramCache]: Analyzing trace with hash -885874594, now seen corresponding path program 100 times [2022-01-19 13:06:34,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:34,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523257219] [2022-01-19 13:06:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:34,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:34,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:34,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523257219] [2022-01-19 13:06:34,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523257219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:34,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:34,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:34,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801794994] [2022-01-19 13:06:34,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:34,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:34,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:34,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:34,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:34,962 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:34,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 840 places, 686 transitions, 14740 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:34,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:34,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:34,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:36,439 INFO L129 PetriNetUnfolder]: 917/3238 cut-off events. [2022-01-19 13:06:36,440 INFO L130 PetriNetUnfolder]: For 89073/89079 co-relation queries the response was YES. [2022-01-19 13:06:36,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22714 conditions, 3238 events. 917/3238 cut-off events. For 89073/89079 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 26146 event pairs, 456 based on Foata normal form. 1/3130 useless extension candidates. Maximal degree in co-relation 22403. Up to 977 conditions per place. [2022-01-19 13:06:36,520 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 382 selfloop transitions, 160 changer transitions 62/745 dead transitions. [2022-01-19 13:06:36,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 840 places, 745 transitions, 17242 flow [2022-01-19 13:06:36,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:06:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:06:36,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4496 transitions. [2022-01-19 13:06:36,523 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646258503401361 [2022-01-19 13:06:36,523 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4496 transitions. [2022-01-19 13:06:36,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4496 transitions. [2022-01-19 13:06:36,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:36,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4496 transitions. [2022-01-19 13:06:36,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.57142857142858) internal successors, (4496), 28 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:36,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:36,529 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:36,529 INFO L186 Difference]: Start difference. First operand has 840 places, 686 transitions, 14740 flow. Second operand 28 states and 4496 transitions. [2022-01-19 13:06:36,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 840 places, 745 transitions, 17242 flow [2022-01-19 13:06:37,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 745 transitions, 16707 flow, removed 32 selfloop flow, removed 28 redundant places. [2022-01-19 13:06:37,348 INFO L242 Difference]: Finished difference. Result has 821 places, 661 transitions, 13861 flow [2022-01-19 13:06:37,349 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14257, PETRI_DIFFERENCE_MINUEND_PLACES=785, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=13861, PETRI_PLACES=821, PETRI_TRANSITIONS=661} [2022-01-19 13:06:37,349 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 634 predicate places. [2022-01-19 13:06:37,349 INFO L470 AbstractCegarLoop]: Abstraction has has 821 places, 661 transitions, 13861 flow [2022-01-19 13:06:37,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:37,350 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:37,350 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:37,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-01-19 13:06:37,350 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:37,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:37,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1036209490, now seen corresponding path program 101 times [2022-01-19 13:06:37,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:37,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006883452] [2022-01-19 13:06:37,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:37,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:37,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:37,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006883452] [2022-01-19 13:06:37,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006883452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:37,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:37,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:37,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237265517] [2022-01-19 13:06:37,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:37,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:37,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:37,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:37,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:37,494 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:37,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 821 places, 661 transitions, 13861 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:37,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:37,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:37,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:38,941 INFO L129 PetriNetUnfolder]: 912/3134 cut-off events. [2022-01-19 13:06:38,941 INFO L130 PetriNetUnfolder]: For 84221/84241 co-relation queries the response was YES. [2022-01-19 13:06:39,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22316 conditions, 3134 events. 912/3134 cut-off events. For 84221/84241 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 25034 event pairs, 424 based on Foata normal form. 3/3030 useless extension candidates. Maximal degree in co-relation 22013. Up to 971 conditions per place. [2022-01-19 13:06:39,017 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 385 selfloop transitions, 158 changer transitions 59/743 dead transitions. [2022-01-19 13:06:39,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 817 places, 743 transitions, 17049 flow [2022-01-19 13:06:39,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:06:39,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:06:39,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4822 transitions. [2022-01-19 13:06:39,020 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653968253968254 [2022-01-19 13:06:39,020 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4822 transitions. [2022-01-19 13:06:39,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4822 transitions. [2022-01-19 13:06:39,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:39,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4822 transitions. [2022-01-19 13:06:39,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.73333333333332) internal successors, (4822), 30 states have internal predecessors, (4822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:39,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:39,026 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:39,026 INFO L186 Difference]: Start difference. First operand has 821 places, 661 transitions, 13861 flow. Second operand 30 states and 4822 transitions. [2022-01-19 13:06:39,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 817 places, 743 transitions, 17049 flow [2022-01-19 13:06:39,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 785 places, 743 transitions, 16241 flow, removed 35 selfloop flow, removed 32 redundant places. [2022-01-19 13:06:39,731 INFO L242 Difference]: Finished difference. Result has 796 places, 663 transitions, 13586 flow [2022-01-19 13:06:39,732 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13180, PETRI_DIFFERENCE_MINUEND_PLACES=756, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13586, PETRI_PLACES=796, PETRI_TRANSITIONS=663} [2022-01-19 13:06:39,732 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 609 predicate places. [2022-01-19 13:06:39,732 INFO L470 AbstractCegarLoop]: Abstraction has has 796 places, 663 transitions, 13586 flow [2022-01-19 13:06:39,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:39,732 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:39,732 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:39,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-01-19 13:06:39,732 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:39,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:39,733 INFO L85 PathProgramCache]: Analyzing trace with hash -207531584, now seen corresponding path program 102 times [2022-01-19 13:06:39,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:39,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076689306] [2022-01-19 13:06:39,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:39,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:39,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:39,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:39,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076689306] [2022-01-19 13:06:39,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076689306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:39,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:39,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:39,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835421012] [2022-01-19 13:06:39,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:39,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:39,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:39,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:39,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:39,848 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:39,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 663 transitions, 13586 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:39,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:39,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:39,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:41,334 INFO L129 PetriNetUnfolder]: 902/3188 cut-off events. [2022-01-19 13:06:41,334 INFO L130 PetriNetUnfolder]: For 78832/78838 co-relation queries the response was YES. [2022-01-19 13:06:41,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21861 conditions, 3188 events. 902/3188 cut-off events. For 78832/78838 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 25626 event pairs, 459 based on Foata normal form. 1/3079 useless extension candidates. Maximal degree in co-relation 21567. Up to 969 conditions per place. [2022-01-19 13:06:41,413 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 374 selfloop transitions, 157 changer transitions 57/729 dead transitions. [2022-01-19 13:06:41,413 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 810 places, 729 transitions, 16336 flow [2022-01-19 13:06:41,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:06:41,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:06:41,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 13:06:41,415 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 13:06:41,415 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 13:06:41,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 13:06:41,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:41,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 13:06:41,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:41,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:41,421 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:41,421 INFO L186 Difference]: Start difference. First operand has 796 places, 663 transitions, 13586 flow. Second operand 30 states and 4817 transitions. [2022-01-19 13:06:41,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 810 places, 729 transitions, 16336 flow [2022-01-19 13:06:42,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 797 places, 729 transitions, 16002 flow, removed 58 selfloop flow, removed 13 redundant places. [2022-01-19 13:06:42,125 INFO L242 Difference]: Finished difference. Result has 809 places, 651 transitions, 13308 flow [2022-01-19 13:06:42,125 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13281, PETRI_DIFFERENCE_MINUEND_PLACES=768, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13308, PETRI_PLACES=809, PETRI_TRANSITIONS=651} [2022-01-19 13:06:42,125 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 622 predicate places. [2022-01-19 13:06:42,125 INFO L470 AbstractCegarLoop]: Abstraction has has 809 places, 651 transitions, 13308 flow [2022-01-19 13:06:42,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:42,126 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:42,126 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:42,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-01-19 13:06:42,126 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:42,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:42,127 INFO L85 PathProgramCache]: Analyzing trace with hash 81257722, now seen corresponding path program 103 times [2022-01-19 13:06:42,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:42,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34787644] [2022-01-19 13:06:42,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:42,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:42,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:42,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:42,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34787644] [2022-01-19 13:06:42,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34787644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:42,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:42,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:42,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446293491] [2022-01-19 13:06:42,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:42,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:42,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:42,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:42,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:42,260 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:42,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 651 transitions, 13308 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:42,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:42,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:42,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:43,644 INFO L129 PetriNetUnfolder]: 878/3028 cut-off events. [2022-01-19 13:06:43,644 INFO L130 PetriNetUnfolder]: For 77835/77855 co-relation queries the response was YES. [2022-01-19 13:06:43,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21025 conditions, 3028 events. 878/3028 cut-off events. For 77835/77855 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 23968 event pairs, 404 based on Foata normal form. 3/2925 useless extension candidates. Maximal degree in co-relation 20728. Up to 965 conditions per place. [2022-01-19 13:06:43,714 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 364 selfloop transitions, 146 changer transitions 60/711 dead transitions. [2022-01-19 13:06:43,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 811 places, 711 transitions, 15814 flow [2022-01-19 13:06:43,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:06:43,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:06:43,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4808 transitions. [2022-01-19 13:06:43,717 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631746031746032 [2022-01-19 13:06:43,717 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4808 transitions. [2022-01-19 13:06:43,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4808 transitions. [2022-01-19 13:06:43,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:43,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4808 transitions. [2022-01-19 13:06:43,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.26666666666668) internal successors, (4808), 30 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:43,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:43,723 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:43,723 INFO L186 Difference]: Start difference. First operand has 809 places, 651 transitions, 13308 flow. Second operand 30 states and 4808 transitions. [2022-01-19 13:06:43,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 811 places, 711 transitions, 15814 flow [2022-01-19 13:06:44,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 781 places, 711 transitions, 15202 flow, removed 38 selfloop flow, removed 30 redundant places. [2022-01-19 13:06:44,395 INFO L242 Difference]: Finished difference. Result has 792 places, 625 transitions, 12375 flow [2022-01-19 13:06:44,396 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12761, PETRI_DIFFERENCE_MINUEND_PLACES=752, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=12375, PETRI_PLACES=792, PETRI_TRANSITIONS=625} [2022-01-19 13:06:44,396 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 605 predicate places. [2022-01-19 13:06:44,396 INFO L470 AbstractCegarLoop]: Abstraction has has 792 places, 625 transitions, 12375 flow [2022-01-19 13:06:44,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:44,396 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:44,396 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:44,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-01-19 13:06:44,397 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:44,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:44,397 INFO L85 PathProgramCache]: Analyzing trace with hash -340669678, now seen corresponding path program 104 times [2022-01-19 13:06:44,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:44,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185116550] [2022-01-19 13:06:44,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:44,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:44,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:44,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185116550] [2022-01-19 13:06:44,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185116550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:44,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:44,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:44,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463119124] [2022-01-19 13:06:44,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:44,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:44,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:44,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:44,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:44,505 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:44,506 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 625 transitions, 12375 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:44,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:44,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:44,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:45,891 INFO L129 PetriNetUnfolder]: 873/3013 cut-off events. [2022-01-19 13:06:45,891 INFO L130 PetriNetUnfolder]: For 73017/73037 co-relation queries the response was YES. [2022-01-19 13:06:45,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20713 conditions, 3013 events. 873/3013 cut-off events. For 73017/73037 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 23813 event pairs, 420 based on Foata normal form. 3/2909 useless extension candidates. Maximal degree in co-relation 20422. Up to 961 conditions per place. [2022-01-19 13:06:45,964 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 357 selfloop transitions, 133 changer transitions 58/689 dead transitions. [2022-01-19 13:06:45,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 786 places, 689 transitions, 14920 flow [2022-01-19 13:06:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:06:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:06:45,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4813 transitions. [2022-01-19 13:06:45,966 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763968253968254 [2022-01-19 13:06:45,966 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4813 transitions. [2022-01-19 13:06:45,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4813 transitions. [2022-01-19 13:06:45,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:45,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4813 transitions. [2022-01-19 13:06:45,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:45,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:45,972 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:45,972 INFO L186 Difference]: Start difference. First operand has 792 places, 625 transitions, 12375 flow. Second operand 30 states and 4813 transitions. [2022-01-19 13:06:45,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 786 places, 689 transitions, 14920 flow [2022-01-19 13:06:46,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 755 places, 689 transitions, 14275 flow, removed 36 selfloop flow, removed 31 redundant places. [2022-01-19 13:06:46,603 INFO L242 Difference]: Finished difference. Result has 767 places, 612 transitions, 11786 flow [2022-01-19 13:06:46,603 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11822, PETRI_DIFFERENCE_MINUEND_PLACES=726, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11786, PETRI_PLACES=767, PETRI_TRANSITIONS=612} [2022-01-19 13:06:46,604 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 580 predicate places. [2022-01-19 13:06:46,604 INFO L470 AbstractCegarLoop]: Abstraction has has 767 places, 612 transitions, 11786 flow [2022-01-19 13:06:46,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:46,604 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:46,604 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:46,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-01-19 13:06:46,604 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:46,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:46,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1466982394, now seen corresponding path program 105 times [2022-01-19 13:06:46,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:46,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187322941] [2022-01-19 13:06:46,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:46,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:46,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:46,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187322941] [2022-01-19 13:06:46,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187322941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:46,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:46,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:46,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145416507] [2022-01-19 13:06:46,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:46,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:46,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:46,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:46,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:46,724 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:46,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 767 places, 612 transitions, 11786 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:46,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:46,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:46,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:48,097 INFO L129 PetriNetUnfolder]: 860/3086 cut-off events. [2022-01-19 13:06:48,097 INFO L130 PetriNetUnfolder]: For 69378/69384 co-relation queries the response was YES. [2022-01-19 13:06:48,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20215 conditions, 3086 events. 860/3086 cut-off events. For 69378/69384 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 24760 event pairs, 440 based on Foata normal form. 1/2983 useless extension candidates. Maximal degree in co-relation 19931. Up to 943 conditions per place. [2022-01-19 13:06:48,166 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 343 selfloop transitions, 141 changer transitions 73/698 dead transitions. [2022-01-19 13:06:48,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 774 places, 698 transitions, 14824 flow [2022-01-19 13:06:48,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:06:48,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:06:48,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5600 transitions. [2022-01-19 13:06:48,169 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 13:06:48,169 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5600 transitions. [2022-01-19 13:06:48,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5600 transitions. [2022-01-19 13:06:48,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:48,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5600 transitions. [2022-01-19 13:06:48,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.0) internal successors, (5600), 35 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:48,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:48,176 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:48,176 INFO L186 Difference]: Start difference. First operand has 767 places, 612 transitions, 11786 flow. Second operand 35 states and 5600 transitions. [2022-01-19 13:06:48,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 774 places, 698 transitions, 14824 flow [2022-01-19 13:06:48,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 743 places, 698 transitions, 14334 flow, removed 33 selfloop flow, removed 31 redundant places. [2022-01-19 13:06:48,774 INFO L242 Difference]: Finished difference. Result has 756 places, 599 transitions, 11299 flow [2022-01-19 13:06:48,775 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11364, PETRI_DIFFERENCE_MINUEND_PLACES=709, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=11299, PETRI_PLACES=756, PETRI_TRANSITIONS=599} [2022-01-19 13:06:48,775 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 569 predicate places. [2022-01-19 13:06:48,775 INFO L470 AbstractCegarLoop]: Abstraction has has 756 places, 599 transitions, 11299 flow [2022-01-19 13:06:48,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:48,776 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:48,776 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:48,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-01-19 13:06:48,776 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:48,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:48,776 INFO L85 PathProgramCache]: Analyzing trace with hash -646566524, now seen corresponding path program 106 times [2022-01-19 13:06:48,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:48,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704412876] [2022-01-19 13:06:48,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:48,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:48,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:48,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704412876] [2022-01-19 13:06:48,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704412876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:48,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:48,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:48,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646471972] [2022-01-19 13:06:48,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:48,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:48,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:48,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:48,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:48,885 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:48,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 756 places, 599 transitions, 11299 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:48,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:48,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:48,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:50,196 INFO L129 PetriNetUnfolder]: 827/2965 cut-off events. [2022-01-19 13:06:50,196 INFO L130 PetriNetUnfolder]: For 63634/63640 co-relation queries the response was YES. [2022-01-19 13:06:50,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19154 conditions, 2965 events. 827/2965 cut-off events. For 63634/63640 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 23320 event pairs, 439 based on Foata normal form. 1/2861 useless extension candidates. Maximal degree in co-relation 18877. Up to 941 conditions per place. [2022-01-19 13:06:50,260 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 328 selfloop transitions, 114 changer transitions 61/644 dead transitions. [2022-01-19 13:06:50,260 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 763 places, 644 transitions, 13195 flow [2022-01-19 13:06:50,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:06:50,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:06:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4638 transitions. [2022-01-19 13:06:50,262 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.761576354679803 [2022-01-19 13:06:50,262 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4638 transitions. [2022-01-19 13:06:50,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4638 transitions. [2022-01-19 13:06:50,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:50,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4638 transitions. [2022-01-19 13:06:50,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.93103448275863) internal successors, (4638), 29 states have internal predecessors, (4638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:50,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:50,268 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:50,268 INFO L186 Difference]: Start difference. First operand has 756 places, 599 transitions, 11299 flow. Second operand 29 states and 4638 transitions. [2022-01-19 13:06:50,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 763 places, 644 transitions, 13195 flow [2022-01-19 13:06:50,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 734 places, 644 transitions, 12803 flow, removed 58 selfloop flow, removed 29 redundant places. [2022-01-19 13:06:50,780 INFO L242 Difference]: Finished difference. Result has 743 places, 558 transitions, 10135 flow [2022-01-19 13:06:50,781 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10945, PETRI_DIFFERENCE_MINUEND_PLACES=706, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=10135, PETRI_PLACES=743, PETRI_TRANSITIONS=558} [2022-01-19 13:06:50,781 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 556 predicate places. [2022-01-19 13:06:50,781 INFO L470 AbstractCegarLoop]: Abstraction has has 743 places, 558 transitions, 10135 flow [2022-01-19 13:06:50,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:50,781 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:50,781 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:50,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-01-19 13:06:50,781 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:50,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:50,782 INFO L85 PathProgramCache]: Analyzing trace with hash -915891424, now seen corresponding path program 107 times [2022-01-19 13:06:50,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:50,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680396901] [2022-01-19 13:06:50,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:50,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:50,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:50,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680396901] [2022-01-19 13:06:50,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680396901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:50,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:50,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:50,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087217426] [2022-01-19 13:06:50,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:50,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:50,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:50,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:50,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:50,899 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:50,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 558 transitions, 10135 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:50,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:50,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:50,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:52,287 INFO L129 PetriNetUnfolder]: 838/2912 cut-off events. [2022-01-19 13:06:52,288 INFO L130 PetriNetUnfolder]: For 65834/65854 co-relation queries the response was YES. [2022-01-19 13:06:52,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19258 conditions, 2912 events. 838/2912 cut-off events. For 65834/65854 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 22763 event pairs, 403 based on Foata normal form. 3/2815 useless extension candidates. Maximal degree in co-relation 18993. Up to 939 conditions per place. [2022-01-19 13:06:52,354 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 316 selfloop transitions, 138 changer transitions 70/665 dead transitions. [2022-01-19 13:06:52,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 665 transitions, 13797 flow [2022-01-19 13:06:52,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:06:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:06:52,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6081 transitions. [2022-01-19 13:06:52,357 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76203007518797 [2022-01-19 13:06:52,357 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6081 transitions. [2022-01-19 13:06:52,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6081 transitions. [2022-01-19 13:06:52,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:52,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6081 transitions. [2022-01-19 13:06:52,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.02631578947367) internal successors, (6081), 38 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:52,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:52,364 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:52,364 INFO L186 Difference]: Start difference. First operand has 743 places, 558 transitions, 10135 flow. Second operand 38 states and 6081 transitions. [2022-01-19 13:06:52,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 665 transitions, 13797 flow [2022-01-19 13:06:52,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 695 places, 665 transitions, 12925 flow, removed 45 selfloop flow, removed 34 redundant places. [2022-01-19 13:06:52,862 INFO L242 Difference]: Finished difference. Result has 718 places, 566 transitions, 10062 flow [2022-01-19 13:06:52,862 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9445, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10062, PETRI_PLACES=718, PETRI_TRANSITIONS=566} [2022-01-19 13:06:52,863 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 531 predicate places. [2022-01-19 13:06:52,863 INFO L470 AbstractCegarLoop]: Abstraction has has 718 places, 566 transitions, 10062 flow [2022-01-19 13:06:52,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:52,863 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:52,863 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:52,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-01-19 13:06:52,864 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:52,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:52,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1163121618, now seen corresponding path program 108 times [2022-01-19 13:06:52,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:52,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915218754] [2022-01-19 13:06:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:52,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:52,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:52,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915218754] [2022-01-19 13:06:52,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915218754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:52,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:52,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:52,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425745566] [2022-01-19 13:06:52,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:52,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:52,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:52,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:52,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:52,986 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:52,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 718 places, 566 transitions, 10062 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:52,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:52,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:52,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:54,239 INFO L129 PetriNetUnfolder]: 807/2820 cut-off events. [2022-01-19 13:06:54,239 INFO L130 PetriNetUnfolder]: For 58009/58029 co-relation queries the response was YES. [2022-01-19 13:06:54,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18039 conditions, 2820 events. 807/2820 cut-off events. For 58009/58029 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 21834 event pairs, 413 based on Foata normal form. 3/2721 useless extension candidates. Maximal degree in co-relation 17773. Up to 937 conditions per place. [2022-01-19 13:06:54,300 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 321 selfloop transitions, 85 changer transitions 60/607 dead transitions. [2022-01-19 13:06:54,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 722 places, 607 transitions, 11717 flow [2022-01-19 13:06:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:06:54,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:06:54,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4646 transitions. [2022-01-19 13:06:54,302 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628899835796388 [2022-01-19 13:06:54,302 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4646 transitions. [2022-01-19 13:06:54,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4646 transitions. [2022-01-19 13:06:54,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:54,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4646 transitions. [2022-01-19 13:06:54,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.20689655172413) internal successors, (4646), 29 states have internal predecessors, (4646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:54,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:54,308 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:54,308 INFO L186 Difference]: Start difference. First operand has 718 places, 566 transitions, 10062 flow. Second operand 29 states and 4646 transitions. [2022-01-19 13:06:54,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 722 places, 607 transitions, 11717 flow [2022-01-19 13:06:54,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 700 places, 607 transitions, 11462 flow, removed 57 selfloop flow, removed 22 redundant places. [2022-01-19 13:06:54,773 INFO L242 Difference]: Finished difference. Result has 707 places, 528 transitions, 9109 flow [2022-01-19 13:06:54,773 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9826, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9109, PETRI_PLACES=707, PETRI_TRANSITIONS=528} [2022-01-19 13:06:54,774 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 520 predicate places. [2022-01-19 13:06:54,774 INFO L470 AbstractCegarLoop]: Abstraction has has 707 places, 528 transitions, 9109 flow [2022-01-19 13:06:54,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:54,774 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:54,774 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:54,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-01-19 13:06:54,775 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:54,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:54,775 INFO L85 PathProgramCache]: Analyzing trace with hash 740238738, now seen corresponding path program 109 times [2022-01-19 13:06:54,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:54,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829140139] [2022-01-19 13:06:54,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:54,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:54,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:54,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829140139] [2022-01-19 13:06:54,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829140139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:54,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:54,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:54,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081933934] [2022-01-19 13:06:54,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:54,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:54,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:54,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:54,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:54,903 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:54,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 707 places, 528 transitions, 9109 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:54,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:54,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:54,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:56,249 INFO L129 PetriNetUnfolder]: 807/2845 cut-off events. [2022-01-19 13:06:56,249 INFO L130 PetriNetUnfolder]: For 58503/58523 co-relation queries the response was YES. [2022-01-19 13:06:56,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18018 conditions, 2845 events. 807/2845 cut-off events. For 58503/58523 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 22136 event pairs, 410 based on Foata normal form. 3/2747 useless extension candidates. Maximal degree in co-relation 17763. Up to 935 conditions per place. [2022-01-19 13:06:56,310 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 279 selfloop transitions, 129 changer transitions 70/619 dead transitions. [2022-01-19 13:06:56,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 619 transitions, 12177 flow [2022-01-19 13:06:56,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:06:56,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:06:56,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5927 transitions. [2022-01-19 13:06:56,313 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628056628056628 [2022-01-19 13:06:56,313 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5927 transitions. [2022-01-19 13:06:56,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5927 transitions. [2022-01-19 13:06:56,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:56,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5927 transitions. [2022-01-19 13:06:56,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1891891891892) internal successors, (5927), 37 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:56,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:56,321 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:56,321 INFO L186 Difference]: Start difference. First operand has 707 places, 528 transitions, 9109 flow. Second operand 37 states and 5927 transitions. [2022-01-19 13:06:56,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 619 transitions, 12177 flow [2022-01-19 13:06:56,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 619 transitions, 11688 flow, removed 32 selfloop flow, removed 31 redundant places. [2022-01-19 13:06:56,731 INFO L242 Difference]: Finished difference. Result has 686 places, 528 transitions, 9050 flow [2022-01-19 13:06:56,731 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8713, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9050, PETRI_PLACES=686, PETRI_TRANSITIONS=528} [2022-01-19 13:06:56,731 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 499 predicate places. [2022-01-19 13:06:56,731 INFO L470 AbstractCegarLoop]: Abstraction has has 686 places, 528 transitions, 9050 flow [2022-01-19 13:06:56,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:56,732 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:56,732 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:56,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-01-19 13:06:56,732 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:56,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:56,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1682277394, now seen corresponding path program 110 times [2022-01-19 13:06:56,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:56,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140930347] [2022-01-19 13:06:56,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:56,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:56,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:56,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140930347] [2022-01-19 13:06:56,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140930347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:56,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:56,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:56,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018590060] [2022-01-19 13:06:56,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:56,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:56,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:56,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:56,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:56,843 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:56,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 528 transitions, 9050 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:56,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:56,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:56,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:06:58,118 INFO L129 PetriNetUnfolder]: 807/2840 cut-off events. [2022-01-19 13:06:58,119 INFO L130 PetriNetUnfolder]: For 58296/58316 co-relation queries the response was YES. [2022-01-19 13:06:58,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18067 conditions, 2840 events. 807/2840 cut-off events. For 58296/58316 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 22086 event pairs, 406 based on Foata normal form. 3/2742 useless extension candidates. Maximal degree in co-relation 17810. Up to 945 conditions per place. [2022-01-19 13:06:58,182 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 286 selfloop transitions, 145 changer transitions 56/628 dead transitions. [2022-01-19 13:06:58,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 628 transitions, 12432 flow [2022-01-19 13:06:58,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:06:58,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:06:58,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4823 transitions. [2022-01-19 13:06:58,184 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655555555555555 [2022-01-19 13:06:58,184 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4823 transitions. [2022-01-19 13:06:58,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4823 transitions. [2022-01-19 13:06:58,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:06:58,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4823 transitions. [2022-01-19 13:06:58,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.76666666666668) internal successors, (4823), 30 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:58,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:58,190 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:58,190 INFO L186 Difference]: Start difference. First operand has 686 places, 528 transitions, 9050 flow. Second operand 30 states and 4823 transitions. [2022-01-19 13:06:58,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 628 transitions, 12432 flow [2022-01-19 13:06:58,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 628 transitions, 12062 flow, removed 79 selfloop flow, removed 26 redundant places. [2022-01-19 13:06:58,620 INFO L242 Difference]: Finished difference. Result has 681 places, 546 transitions, 9710 flow [2022-01-19 13:06:58,620 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8742, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9710, PETRI_PLACES=681, PETRI_TRANSITIONS=546} [2022-01-19 13:06:58,620 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 494 predicate places. [2022-01-19 13:06:58,620 INFO L470 AbstractCegarLoop]: Abstraction has has 681 places, 546 transitions, 9710 flow [2022-01-19 13:06:58,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:58,621 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:06:58,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:06:58,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-01-19 13:06:58,621 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:06:58,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:06:58,621 INFO L85 PathProgramCache]: Analyzing trace with hash -361675340, now seen corresponding path program 111 times [2022-01-19 13:06:58,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:06:58,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622781225] [2022-01-19 13:06:58,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:06:58,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:06:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:06:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:06:58,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:06:58,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622781225] [2022-01-19 13:06:58,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622781225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:06:58,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:06:58,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:06:58,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447626673] [2022-01-19 13:06:58,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:06:58,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:06:58,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:06:58,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:06:58,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:06:58,734 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:06:58,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 546 transitions, 9710 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:06:58,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:06:58,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:06:58,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:00,004 INFO L129 PetriNetUnfolder]: 788/2773 cut-off events. [2022-01-19 13:07:00,004 INFO L130 PetriNetUnfolder]: For 55093/55113 co-relation queries the response was YES. [2022-01-19 13:07:00,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17482 conditions, 2773 events. 788/2773 cut-off events. For 55093/55113 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 21351 event pairs, 404 based on Foata normal form. 3/2674 useless extension candidates. Maximal degree in co-relation 17232. Up to 937 conditions per place. [2022-01-19 13:07:00,049 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 283 selfloop transitions, 114 changer transitions 59/597 dead transitions. [2022-01-19 13:07:00,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 597 transitions, 11588 flow [2022-01-19 13:07:00,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:07:00,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:07:00,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4658 transitions. [2022-01-19 13:07:00,052 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7648604269293925 [2022-01-19 13:07:00,052 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4658 transitions. [2022-01-19 13:07:00,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4658 transitions. [2022-01-19 13:07:00,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:00,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4658 transitions. [2022-01-19 13:07:00,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6206896551724) internal successors, (4658), 29 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:00,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:00,058 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:00,058 INFO L186 Difference]: Start difference. First operand has 681 places, 546 transitions, 9710 flow. Second operand 29 states and 4658 transitions. [2022-01-19 13:07:00,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 597 transitions, 11588 flow [2022-01-19 13:07:00,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 597 transitions, 11260 flow, removed 124 selfloop flow, removed 10 redundant places. [2022-01-19 13:07:00,449 INFO L242 Difference]: Finished difference. Result has 694 places, 521 transitions, 8968 flow [2022-01-19 13:07:00,449 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9405, PETRI_DIFFERENCE_MINUEND_PLACES=656, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8968, PETRI_PLACES=694, PETRI_TRANSITIONS=521} [2022-01-19 13:07:00,450 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 507 predicate places. [2022-01-19 13:07:00,450 INFO L470 AbstractCegarLoop]: Abstraction has has 694 places, 521 transitions, 8968 flow [2022-01-19 13:07:00,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:00,450 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:00,450 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:00,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-01-19 13:07:00,451 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:00,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:00,451 INFO L85 PathProgramCache]: Analyzing trace with hash 281739238, now seen corresponding path program 112 times [2022-01-19 13:07:00,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:00,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788372921] [2022-01-19 13:07:00,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:00,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:00,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:00,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:00,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788372921] [2022-01-19 13:07:00,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788372921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:00,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:00,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:00,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983684855] [2022-01-19 13:07:00,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:00,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:00,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:00,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:00,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:00,585 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:00,586 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 694 places, 521 transitions, 8968 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:00,586 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:00,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:00,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:01,703 INFO L129 PetriNetUnfolder]: 764/2686 cut-off events. [2022-01-19 13:07:01,703 INFO L130 PetriNetUnfolder]: For 50889/50909 co-relation queries the response was YES. [2022-01-19 13:07:01,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16561 conditions, 2686 events. 764/2686 cut-off events. For 50889/50909 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 20406 event pairs, 391 based on Foata normal form. 3/2590 useless extension candidates. Maximal degree in co-relation 16309. Up to 927 conditions per place. [2022-01-19 13:07:01,760 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 271 selfloop transitions, 98 changer transitions 61/571 dead transitions. [2022-01-19 13:07:01,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 571 transitions, 10774 flow [2022-01-19 13:07:01,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:07:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:07:01,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4499 transitions. [2022-01-19 13:07:01,763 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651360544217687 [2022-01-19 13:07:01,763 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4499 transitions. [2022-01-19 13:07:01,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4499 transitions. [2022-01-19 13:07:01,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:01,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4499 transitions. [2022-01-19 13:07:01,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.67857142857142) internal successors, (4499), 28 states have internal predecessors, (4499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:01,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:01,769 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:01,769 INFO L186 Difference]: Start difference. First operand has 694 places, 521 transitions, 8968 flow. Second operand 28 states and 4499 transitions. [2022-01-19 13:07:01,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 571 transitions, 10774 flow [2022-01-19 13:07:02,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 571 transitions, 10171 flow, removed 43 selfloop flow, removed 34 redundant places. [2022-01-19 13:07:02,134 INFO L242 Difference]: Finished difference. Result has 661 places, 486 transitions, 7732 flow [2022-01-19 13:07:02,134 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8425, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7732, PETRI_PLACES=661, PETRI_TRANSITIONS=486} [2022-01-19 13:07:02,135 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 474 predicate places. [2022-01-19 13:07:02,135 INFO L470 AbstractCegarLoop]: Abstraction has has 661 places, 486 transitions, 7732 flow [2022-01-19 13:07:02,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:02,135 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:02,135 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:02,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-01-19 13:07:02,135 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:02,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:02,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1668264364, now seen corresponding path program 113 times [2022-01-19 13:07:02,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:02,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260895858] [2022-01-19 13:07:02,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:02,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:02,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:02,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:02,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260895858] [2022-01-19 13:07:02,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260895858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:02,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:02,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:02,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966322861] [2022-01-19 13:07:02,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:02,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:02,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:02,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:02,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:02,275 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:02,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 486 transitions, 7732 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:02,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:02,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:02,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:03,396 INFO L129 PetriNetUnfolder]: 772/2706 cut-off events. [2022-01-19 13:07:03,396 INFO L130 PetriNetUnfolder]: For 48691/48711 co-relation queries the response was YES. [2022-01-19 13:07:03,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16456 conditions, 2706 events. 772/2706 cut-off events. For 48691/48711 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20575 event pairs, 389 based on Foata normal form. 3/2611 useless extension candidates. Maximal degree in co-relation 16216. Up to 929 conditions per place. [2022-01-19 13:07:03,449 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 261 selfloop transitions, 122 changer transitions 55/579 dead transitions. [2022-01-19 13:07:03,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 579 transitions, 10733 flow [2022-01-19 13:07:03,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:07:03,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:07:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4667 transitions. [2022-01-19 13:07:03,452 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7663382594417077 [2022-01-19 13:07:03,452 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4667 transitions. [2022-01-19 13:07:03,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4667 transitions. [2022-01-19 13:07:03,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:03,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4667 transitions. [2022-01-19 13:07:03,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.93103448275863) internal successors, (4667), 29 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:03,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:03,458 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:03,458 INFO L186 Difference]: Start difference. First operand has 661 places, 486 transitions, 7732 flow. Second operand 29 states and 4667 transitions. [2022-01-19 13:07:03,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 649 places, 579 transitions, 10733 flow [2022-01-19 13:07:03,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 579 transitions, 9960 flow, removed 49 selfloop flow, removed 38 redundant places. [2022-01-19 13:07:03,779 INFO L242 Difference]: Finished difference. Result has 625 places, 498 transitions, 7804 flow [2022-01-19 13:07:03,780 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7189, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7804, PETRI_PLACES=625, PETRI_TRANSITIONS=498} [2022-01-19 13:07:03,780 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 438 predicate places. [2022-01-19 13:07:03,780 INFO L470 AbstractCegarLoop]: Abstraction has has 625 places, 498 transitions, 7804 flow [2022-01-19 13:07:03,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:03,780 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:03,780 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:03,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-01-19 13:07:03,781 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:03,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:03,781 INFO L85 PathProgramCache]: Analyzing trace with hash -877186112, now seen corresponding path program 114 times [2022-01-19 13:07:03,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:03,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047239018] [2022-01-19 13:07:03,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:03,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:03,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:03,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047239018] [2022-01-19 13:07:03,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047239018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:03,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:03,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:03,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041684993] [2022-01-19 13:07:03,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:03,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:03,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:03,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:03,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:03,911 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:03,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 498 transitions, 7804 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:03,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:03,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:03,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:05,033 INFO L129 PetriNetUnfolder]: 773/2708 cut-off events. [2022-01-19 13:07:05,033 INFO L130 PetriNetUnfolder]: For 45058/45078 co-relation queries the response was YES. [2022-01-19 13:07:05,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16323 conditions, 2708 events. 773/2708 cut-off events. For 45058/45078 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20677 event pairs, 389 based on Foata normal form. 3/2609 useless extension candidates. Maximal degree in co-relation 16091. Up to 931 conditions per place. [2022-01-19 13:07:05,084 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 266 selfloop transitions, 129 changer transitions 56/592 dead transitions. [2022-01-19 13:07:05,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 592 transitions, 10832 flow [2022-01-19 13:07:05,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:07:05,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:07:05,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4663 transitions. [2022-01-19 13:07:05,087 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7656814449917898 [2022-01-19 13:07:05,087 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4663 transitions. [2022-01-19 13:07:05,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4663 transitions. [2022-01-19 13:07:05,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:05,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4663 transitions. [2022-01-19 13:07:05,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.79310344827587) internal successors, (4663), 29 states have internal predecessors, (4663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:05,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:05,093 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:05,093 INFO L186 Difference]: Start difference. First operand has 625 places, 498 transitions, 7804 flow. Second operand 29 states and 4663 transitions. [2022-01-19 13:07:05,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 592 transitions, 10832 flow [2022-01-19 13:07:05,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 592 transitions, 10482 flow, removed 61 selfloop flow, removed 14 redundant places. [2022-01-19 13:07:05,407 INFO L242 Difference]: Finished difference. Result has 638 places, 513 transitions, 8296 flow [2022-01-19 13:07:05,407 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7534, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8296, PETRI_PLACES=638, PETRI_TRANSITIONS=513} [2022-01-19 13:07:05,408 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 451 predicate places. [2022-01-19 13:07:05,408 INFO L470 AbstractCegarLoop]: Abstraction has has 638 places, 513 transitions, 8296 flow [2022-01-19 13:07:05,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:05,408 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:05,408 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:05,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-01-19 13:07:05,408 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:05,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:05,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2076835798, now seen corresponding path program 115 times [2022-01-19 13:07:05,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:05,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113176798] [2022-01-19 13:07:05,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:05,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:05,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:05,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113176798] [2022-01-19 13:07:05,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113176798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:05,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:05,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:05,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027223912] [2022-01-19 13:07:05,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:05,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:05,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:05,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:05,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:05,528 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:05,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 513 transitions, 8296 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:05,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:05,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:05,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:06,670 INFO L129 PetriNetUnfolder]: 774/2808 cut-off events. [2022-01-19 13:07:06,670 INFO L130 PetriNetUnfolder]: For 46418/46424 co-relation queries the response was YES. [2022-01-19 13:07:06,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16484 conditions, 2808 events. 774/2808 cut-off events. For 46418/46424 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21711 event pairs, 422 based on Foata normal form. 1/2707 useless extension candidates. Maximal degree in co-relation 16247. Up to 933 conditions per place. [2022-01-19 13:07:06,725 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 267 selfloop transitions, 142 changer transitions 59/609 dead transitions. [2022-01-19 13:07:06,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 609 transitions, 11317 flow [2022-01-19 13:07:06,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:07:06,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:07:06,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4506 transitions. [2022-01-19 13:07:06,728 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7663265306122449 [2022-01-19 13:07:06,728 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4506 transitions. [2022-01-19 13:07:06,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4506 transitions. [2022-01-19 13:07:06,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:06,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4506 transitions. [2022-01-19 13:07:06,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.92857142857142) internal successors, (4506), 28 states have internal predecessors, (4506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:06,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:06,733 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:06,733 INFO L186 Difference]: Start difference. First operand has 638 places, 513 transitions, 8296 flow. Second operand 28 states and 4506 transitions. [2022-01-19 13:07:06,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 609 transitions, 11317 flow [2022-01-19 13:07:07,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 609 transitions, 10904 flow, removed 115 selfloop flow, removed 12 redundant places. [2022-01-19 13:07:07,071 INFO L242 Difference]: Finished difference. Result has 651 places, 521 transitions, 8514 flow [2022-01-19 13:07:07,071 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7973, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8514, PETRI_PLACES=651, PETRI_TRANSITIONS=521} [2022-01-19 13:07:07,072 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 464 predicate places. [2022-01-19 13:07:07,072 INFO L470 AbstractCegarLoop]: Abstraction has has 651 places, 521 transitions, 8514 flow [2022-01-19 13:07:07,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:07,072 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:07,072 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:07,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-01-19 13:07:07,072 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:07,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:07,073 INFO L85 PathProgramCache]: Analyzing trace with hash 163131482, now seen corresponding path program 116 times [2022-01-19 13:07:07,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:07,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616975546] [2022-01-19 13:07:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:07,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:07,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:07,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616975546] [2022-01-19 13:07:07,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616975546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:07,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:07,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:07,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384798917] [2022-01-19 13:07:07,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:07,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:07,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:07,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:07,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:07,184 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:07,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 521 transitions, 8514 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:07,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:07,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:07,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:08,581 INFO L129 PetriNetUnfolder]: 780/2746 cut-off events. [2022-01-19 13:07:08,581 INFO L130 PetriNetUnfolder]: For 46774/46794 co-relation queries the response was YES. [2022-01-19 13:07:08,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16576 conditions, 2746 events. 780/2746 cut-off events. For 46774/46794 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 21110 event pairs, 384 based on Foata normal form. 3/2651 useless extension candidates. Maximal degree in co-relation 16335. Up to 924 conditions per place. [2022-01-19 13:07:08,636 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 267 selfloop transitions, 152 changer transitions 80/640 dead transitions. [2022-01-19 13:07:08,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 640 transitions, 12156 flow [2022-01-19 13:07:08,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 13:07:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 13:07:08,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7335 transitions. [2022-01-19 13:07:08,639 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593167701863354 [2022-01-19 13:07:08,639 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7335 transitions. [2022-01-19 13:07:08,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7335 transitions. [2022-01-19 13:07:08,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:08,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7335 transitions. [2022-01-19 13:07:08,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.45652173913044) internal successors, (7335), 46 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:08,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:08,648 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:08,648 INFO L186 Difference]: Start difference. First operand has 651 places, 521 transitions, 8514 flow. Second operand 46 states and 7335 transitions. [2022-01-19 13:07:08,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 640 transitions, 12156 flow [2022-01-19 13:07:08,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 640 transitions, 11693 flow, removed 81 selfloop flow, removed 15 redundant places. [2022-01-19 13:07:08,999 INFO L242 Difference]: Finished difference. Result has 701 places, 529 transitions, 8796 flow [2022-01-19 13:07:08,999 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8161, PETRI_DIFFERENCE_MINUEND_PLACES=623, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=8796, PETRI_PLACES=701, PETRI_TRANSITIONS=529} [2022-01-19 13:07:08,999 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 514 predicate places. [2022-01-19 13:07:08,999 INFO L470 AbstractCegarLoop]: Abstraction has has 701 places, 529 transitions, 8796 flow [2022-01-19 13:07:09,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:09,000 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:09,000 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:09,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-01-19 13:07:09,000 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:09,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:09,000 INFO L85 PathProgramCache]: Analyzing trace with hash -70186094, now seen corresponding path program 117 times [2022-01-19 13:07:09,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:09,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633932713] [2022-01-19 13:07:09,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:09,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:09,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:09,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633932713] [2022-01-19 13:07:09,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633932713] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:09,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:09,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:09,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752020062] [2022-01-19 13:07:09,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:09,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:09,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:09,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:09,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:09,118 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:09,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 701 places, 529 transitions, 8796 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:09,119 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:09,119 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:09,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:10,341 INFO L129 PetriNetUnfolder]: 755/2758 cut-off events. [2022-01-19 13:07:10,341 INFO L130 PetriNetUnfolder]: For 45920/45926 co-relation queries the response was YES. [2022-01-19 13:07:10,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16174 conditions, 2758 events. 755/2758 cut-off events. For 45920/45926 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21322 event pairs, 427 based on Foata normal form. 1/2656 useless extension candidates. Maximal degree in co-relation 15909. Up to 935 conditions per place. [2022-01-19 13:07:10,398 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 118 changer transitions 58/590 dead transitions. [2022-01-19 13:07:10,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 697 places, 590 transitions, 10893 flow [2022-01-19 13:07:10,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:07:10,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:07:10,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4814 transitions. [2022-01-19 13:07:10,406 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641269841269841 [2022-01-19 13:07:10,406 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4814 transitions. [2022-01-19 13:07:10,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4814 transitions. [2022-01-19 13:07:10,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:10,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4814 transitions. [2022-01-19 13:07:10,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.46666666666667) internal successors, (4814), 30 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:10,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:10,415 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:10,415 INFO L186 Difference]: Start difference. First operand has 701 places, 529 transitions, 8796 flow. Second operand 30 states and 4814 transitions. [2022-01-19 13:07:10,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 697 places, 590 transitions, 10893 flow [2022-01-19 13:07:10,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 590 transitions, 10623 flow, removed 77 selfloop flow, removed 31 redundant places. [2022-01-19 13:07:10,798 INFO L242 Difference]: Finished difference. Result has 677 places, 511 transitions, 8374 flow [2022-01-19 13:07:10,799 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8583, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8374, PETRI_PLACES=677, PETRI_TRANSITIONS=511} [2022-01-19 13:07:10,799 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 490 predicate places. [2022-01-19 13:07:10,799 INFO L470 AbstractCegarLoop]: Abstraction has has 677 places, 511 transitions, 8374 flow [2022-01-19 13:07:10,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:10,799 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:10,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:10,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-01-19 13:07:10,800 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:10,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash -968457894, now seen corresponding path program 118 times [2022-01-19 13:07:10,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:10,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69271690] [2022-01-19 13:07:10,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:10,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:10,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:10,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69271690] [2022-01-19 13:07:10,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69271690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:10,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:10,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:10,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546836047] [2022-01-19 13:07:10,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:10,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:10,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:10,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:10,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:10,921 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:10,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 511 transitions, 8374 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:10,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:10,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:10,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:12,060 INFO L129 PetriNetUnfolder]: 734/2694 cut-off events. [2022-01-19 13:07:12,060 INFO L130 PetriNetUnfolder]: For 42314/42320 co-relation queries the response was YES. [2022-01-19 13:07:12,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15349 conditions, 2694 events. 734/2694 cut-off events. For 42314/42320 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20657 event pairs, 422 based on Foata normal form. 1/2594 useless extension candidates. Maximal degree in co-relation 15101. Up to 932 conditions per place. [2022-01-19 13:07:12,113 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 253 selfloop transitions, 115 changer transitions 60/569 dead transitions. [2022-01-19 13:07:12,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 569 transitions, 10340 flow [2022-01-19 13:07:12,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:07:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:07:12,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4808 transitions. [2022-01-19 13:07:12,115 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631746031746032 [2022-01-19 13:07:12,115 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4808 transitions. [2022-01-19 13:07:12,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4808 transitions. [2022-01-19 13:07:12,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:12,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4808 transitions. [2022-01-19 13:07:12,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.26666666666668) internal successors, (4808), 30 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:12,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:12,121 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:12,121 INFO L186 Difference]: Start difference. First operand has 677 places, 511 transitions, 8374 flow. Second operand 30 states and 4808 transitions. [2022-01-19 13:07:12,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 569 transitions, 10340 flow [2022-01-19 13:07:12,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 569 transitions, 9923 flow, removed 39 selfloop flow, removed 30 redundant places. [2022-01-19 13:07:12,435 INFO L242 Difference]: Finished difference. Result has 657 places, 483 transitions, 7566 flow [2022-01-19 13:07:12,435 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8020, PETRI_DIFFERENCE_MINUEND_PLACES=620, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7566, PETRI_PLACES=657, PETRI_TRANSITIONS=483} [2022-01-19 13:07:12,436 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 470 predicate places. [2022-01-19 13:07:12,436 INFO L470 AbstractCegarLoop]: Abstraction has has 657 places, 483 transitions, 7566 flow [2022-01-19 13:07:12,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:12,436 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:12,436 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:12,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-01-19 13:07:12,436 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:12,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:12,437 INFO L85 PathProgramCache]: Analyzing trace with hash 2089879200, now seen corresponding path program 119 times [2022-01-19 13:07:12,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:12,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961223198] [2022-01-19 13:07:12,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:12,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:12,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:12,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961223198] [2022-01-19 13:07:12,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961223198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:12,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:12,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:12,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027449381] [2022-01-19 13:07:12,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:12,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:12,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:12,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:12,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:12,571 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:12,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 483 transitions, 7566 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:12,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:12,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:12,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:13,881 INFO L129 PetriNetUnfolder]: 738/2728 cut-off events. [2022-01-19 13:07:13,881 INFO L130 PetriNetUnfolder]: For 42459/42465 co-relation queries the response was YES. [2022-01-19 13:07:13,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15389 conditions, 2728 events. 738/2728 cut-off events. For 42459/42465 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20993 event pairs, 417 based on Foata normal form. 1/2633 useless extension candidates. Maximal degree in co-relation 15153. Up to 902 conditions per place. [2022-01-19 13:07:13,930 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 265 selfloop transitions, 117 changer transitions 80/603 dead transitions. [2022-01-19 13:07:13,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 603 transitions, 11184 flow [2022-01-19 13:07:13,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 13:07:13,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 13:07:13,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7185 transitions. [2022-01-19 13:07:13,933 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7603174603174603 [2022-01-19 13:07:13,933 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7185 transitions. [2022-01-19 13:07:13,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7185 transitions. [2022-01-19 13:07:13,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:13,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7185 transitions. [2022-01-19 13:07:13,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.66666666666666) internal successors, (7185), 45 states have internal predecessors, (7185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:13,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:13,942 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:13,942 INFO L186 Difference]: Start difference. First operand has 657 places, 483 transitions, 7566 flow. Second operand 45 states and 7185 transitions. [2022-01-19 13:07:13,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 603 transitions, 11184 flow [2022-01-19 13:07:14,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 603 transitions, 10541 flow, removed 31 selfloop flow, removed 28 redundant places. [2022-01-19 13:07:14,222 INFO L242 Difference]: Finished difference. Result has 667 places, 482 transitions, 7450 flow [2022-01-19 13:07:14,222 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7119, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=7450, PETRI_PLACES=667, PETRI_TRANSITIONS=482} [2022-01-19 13:07:14,223 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 480 predicate places. [2022-01-19 13:07:14,223 INFO L470 AbstractCegarLoop]: Abstraction has has 667 places, 482 transitions, 7450 flow [2022-01-19 13:07:14,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:14,223 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:14,223 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:14,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-01-19 13:07:14,223 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:14,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:14,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1070228796, now seen corresponding path program 120 times [2022-01-19 13:07:14,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:14,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343750225] [2022-01-19 13:07:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:14,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:14,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:14,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343750225] [2022-01-19 13:07:14,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343750225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:14,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:14,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:14,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694374477] [2022-01-19 13:07:14,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:14,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:14,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:14,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:14,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:14,340 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:14,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 482 transitions, 7450 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:14,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:14,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:14,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:15,430 INFO L129 PetriNetUnfolder]: 732/2612 cut-off events. [2022-01-19 13:07:15,431 INFO L130 PetriNetUnfolder]: For 42026/42046 co-relation queries the response was YES. [2022-01-19 13:07:15,474 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15249 conditions, 2612 events. 732/2612 cut-off events. For 42026/42046 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 19751 event pairs, 386 based on Foata normal form. 3/2517 useless extension candidates. Maximal degree in co-relation 15000. Up to 930 conditions per place. [2022-01-19 13:07:15,482 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 241 selfloop transitions, 132 changer transitions 57/571 dead transitions. [2022-01-19 13:07:15,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 571 transitions, 10293 flow [2022-01-19 13:07:15,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:07:15,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:07:15,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4660 transitions. [2022-01-19 13:07:15,484 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651888341543513 [2022-01-19 13:07:15,485 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4660 transitions. [2022-01-19 13:07:15,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4660 transitions. [2022-01-19 13:07:15,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:15,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4660 transitions. [2022-01-19 13:07:15,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.68965517241378) internal successors, (4660), 29 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:15,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:15,490 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:15,490 INFO L186 Difference]: Start difference. First operand has 667 places, 482 transitions, 7450 flow. Second operand 29 states and 4660 transitions. [2022-01-19 13:07:15,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 571 transitions, 10293 flow [2022-01-19 13:07:15,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 571 transitions, 9759 flow, removed 100 selfloop flow, removed 41 redundant places. [2022-01-19 13:07:15,782 INFO L242 Difference]: Finished difference. Result has 636 places, 493 transitions, 7689 flow [2022-01-19 13:07:15,782 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7068, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7689, PETRI_PLACES=636, PETRI_TRANSITIONS=493} [2022-01-19 13:07:15,783 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 449 predicate places. [2022-01-19 13:07:15,783 INFO L470 AbstractCegarLoop]: Abstraction has has 636 places, 493 transitions, 7689 flow [2022-01-19 13:07:15,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:15,783 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:15,783 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:15,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-01-19 13:07:15,783 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:15,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:15,783 INFO L85 PathProgramCache]: Analyzing trace with hash -904693200, now seen corresponding path program 121 times [2022-01-19 13:07:15,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:15,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518188139] [2022-01-19 13:07:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:15,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:15,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:15,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518188139] [2022-01-19 13:07:15,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518188139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:15,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:15,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:15,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593086315] [2022-01-19 13:07:15,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:15,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:15,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:15,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:15,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:15,895 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:15,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 493 transitions, 7689 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:15,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:15,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:15,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:16,949 INFO L129 PetriNetUnfolder]: 728/2686 cut-off events. [2022-01-19 13:07:16,950 INFO L130 PetriNetUnfolder]: For 40230/40236 co-relation queries the response was YES. [2022-01-19 13:07:16,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14951 conditions, 2686 events. 728/2686 cut-off events. For 40230/40236 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 20514 event pairs, 418 based on Foata normal form. 1/2588 useless extension candidates. Maximal degree in co-relation 14724. Up to 932 conditions per place. [2022-01-19 13:07:17,000 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 237 selfloop transitions, 136 changer transitions 57/571 dead transitions. [2022-01-19 13:07:17,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 571 transitions, 10200 flow [2022-01-19 13:07:17,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 13:07:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 13:07:17,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4341 transitions. [2022-01-19 13:07:17,002 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7656084656084656 [2022-01-19 13:07:17,002 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4341 transitions. [2022-01-19 13:07:17,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4341 transitions. [2022-01-19 13:07:17,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:17,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4341 transitions. [2022-01-19 13:07:17,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.77777777777777) internal successors, (4341), 27 states have internal predecessors, (4341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:17,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:17,010 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:17,010 INFO L186 Difference]: Start difference. First operand has 636 places, 493 transitions, 7689 flow. Second operand 27 states and 4341 transitions. [2022-01-19 13:07:17,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 571 transitions, 10200 flow [2022-01-19 13:07:17,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 571 transitions, 9931 flow, removed 53 selfloop flow, removed 13 redundant places. [2022-01-19 13:07:17,309 INFO L242 Difference]: Finished difference. Result has 645 places, 497 transitions, 7891 flow [2022-01-19 13:07:17,309 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7471, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7891, PETRI_PLACES=645, PETRI_TRANSITIONS=497} [2022-01-19 13:07:17,309 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 458 predicate places. [2022-01-19 13:07:17,309 INFO L470 AbstractCegarLoop]: Abstraction has has 645 places, 497 transitions, 7891 flow [2022-01-19 13:07:17,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:17,310 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:17,310 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:17,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-01-19 13:07:17,310 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:17,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:17,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1538965192, now seen corresponding path program 122 times [2022-01-19 13:07:17,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:17,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485516015] [2022-01-19 13:07:17,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:17,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:17,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:17,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485516015] [2022-01-19 13:07:17,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485516015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:17,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:17,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:17,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214529479] [2022-01-19 13:07:17,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:17,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:17,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:17,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:17,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:17,426 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:17,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 497 transitions, 7891 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:17,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:17,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:17,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:18,642 INFO L129 PetriNetUnfolder]: 736/2735 cut-off events. [2022-01-19 13:07:18,643 INFO L130 PetriNetUnfolder]: For 41926/41932 co-relation queries the response was YES. [2022-01-19 13:07:18,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15250 conditions, 2735 events. 736/2735 cut-off events. For 41926/41932 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21137 event pairs, 421 based on Foata normal form. 1/2634 useless extension candidates. Maximal degree in co-relation 15021. Up to 930 conditions per place. [2022-01-19 13:07:18,693 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 126 changer transitions 67/591 dead transitions. [2022-01-19 13:07:18,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 591 transitions, 10841 flow [2022-01-19 13:07:18,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:07:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:07:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-01-19 13:07:18,696 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-01-19 13:07:18,696 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-01-19 13:07:18,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-01-19 13:07:18,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:18,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-01-19 13:07:18,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:18,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:18,704 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:18,704 INFO L186 Difference]: Start difference. First operand has 645 places, 497 transitions, 7891 flow. Second operand 38 states and 6077 transitions. [2022-01-19 13:07:18,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 591 transitions, 10841 flow [2022-01-19 13:07:18,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 591 transitions, 10384 flow, removed 58 selfloop flow, removed 18 redundant places. [2022-01-19 13:07:19,002 INFO L242 Difference]: Finished difference. Result has 675 places, 505 transitions, 8064 flow [2022-01-19 13:07:19,002 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7508, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8064, PETRI_PLACES=675, PETRI_TRANSITIONS=505} [2022-01-19 13:07:19,002 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 488 predicate places. [2022-01-19 13:07:19,002 INFO L470 AbstractCegarLoop]: Abstraction has has 675 places, 505 transitions, 8064 flow [2022-01-19 13:07:19,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:19,002 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:19,003 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:19,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-01-19 13:07:19,003 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:19,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:19,003 INFO L85 PathProgramCache]: Analyzing trace with hash -867861834, now seen corresponding path program 123 times [2022-01-19 13:07:19,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:19,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781220222] [2022-01-19 13:07:19,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:19,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:19,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:19,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781220222] [2022-01-19 13:07:19,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781220222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:19,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:19,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:19,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568072961] [2022-01-19 13:07:19,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:19,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:19,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:19,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:19,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:19,154 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:19,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 505 transitions, 8064 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:19,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:19,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:19,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:20,373 INFO L129 PetriNetUnfolder]: 713/2568 cut-off events. [2022-01-19 13:07:20,373 INFO L130 PetriNetUnfolder]: For 39869/39889 co-relation queries the response was YES. [2022-01-19 13:07:20,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14616 conditions, 2568 events. 713/2568 cut-off events. For 39869/39889 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 19407 event pairs, 386 based on Foata normal form. 3/2472 useless extension candidates. Maximal degree in co-relation 14373. Up to 928 conditions per place. [2022-01-19 13:07:20,425 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 248 selfloop transitions, 108 changer transitions 59/556 dead transitions. [2022-01-19 13:07:20,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 556 transitions, 9858 flow [2022-01-19 13:07:20,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:07:20,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:07:20,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4496 transitions. [2022-01-19 13:07:20,428 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646258503401361 [2022-01-19 13:07:20,428 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4496 transitions. [2022-01-19 13:07:20,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4496 transitions. [2022-01-19 13:07:20,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:20,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4496 transitions. [2022-01-19 13:07:20,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.57142857142858) internal successors, (4496), 28 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:20,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:20,433 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:20,433 INFO L186 Difference]: Start difference. First operand has 675 places, 505 transitions, 8064 flow. Second operand 28 states and 4496 transitions. [2022-01-19 13:07:20,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 556 transitions, 9858 flow [2022-01-19 13:07:20,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 556 transitions, 9621 flow, removed 57 selfloop flow, removed 22 redundant places. [2022-01-19 13:07:20,738 INFO L242 Difference]: Finished difference. Result has 665 places, 480 transitions, 7444 flow [2022-01-19 13:07:20,738 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7864, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7444, PETRI_PLACES=665, PETRI_TRANSITIONS=480} [2022-01-19 13:07:20,738 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 478 predicate places. [2022-01-19 13:07:20,739 INFO L470 AbstractCegarLoop]: Abstraction has has 665 places, 480 transitions, 7444 flow [2022-01-19 13:07:20,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:20,739 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:20,739 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:20,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-01-19 13:07:20,739 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:20,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:20,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1805102650, now seen corresponding path program 124 times [2022-01-19 13:07:20,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:20,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919819694] [2022-01-19 13:07:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:20,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:20,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:20,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:20,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919819694] [2022-01-19 13:07:20,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919819694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:20,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:20,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:20,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446495361] [2022-01-19 13:07:20,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:20,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:20,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:20,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:20,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:20,854 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:20,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 665 places, 480 transitions, 7444 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:20,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:20,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:20,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:22,038 INFO L129 PetriNetUnfolder]: 702/2635 cut-off events. [2022-01-19 13:07:22,038 INFO L130 PetriNetUnfolder]: For 38460/38466 co-relation queries the response was YES. [2022-01-19 13:07:22,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14262 conditions, 2635 events. 702/2635 cut-off events. For 38460/38466 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 20085 event pairs, 417 based on Foata normal form. 1/2537 useless extension candidates. Maximal degree in co-relation 14028. Up to 906 conditions per place. [2022-01-19 13:07:22,091 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 240 selfloop transitions, 110 changer transitions 68/559 dead transitions. [2022-01-19 13:07:22,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 559 transitions, 9920 flow [2022-01-19 13:07:22,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:07:22,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:07:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5916 transitions. [2022-01-19 13:07:22,094 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7613899613899614 [2022-01-19 13:07:22,094 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5916 transitions. [2022-01-19 13:07:22,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5916 transitions. [2022-01-19 13:07:22,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:22,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5916 transitions. [2022-01-19 13:07:22,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.8918918918919) internal successors, (5916), 37 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:22,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:22,101 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:22,101 INFO L186 Difference]: Start difference. First operand has 665 places, 480 transitions, 7444 flow. Second operand 37 states and 5916 transitions. [2022-01-19 13:07:22,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 559 transitions, 9920 flow [2022-01-19 13:07:22,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 559 transitions, 9233 flow, removed 47 selfloop flow, removed 36 redundant places. [2022-01-19 13:07:22,366 INFO L242 Difference]: Finished difference. Result has 654 places, 474 transitions, 7044 flow [2022-01-19 13:07:22,366 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6897, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7044, PETRI_PLACES=654, PETRI_TRANSITIONS=474} [2022-01-19 13:07:22,366 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 467 predicate places. [2022-01-19 13:07:22,366 INFO L470 AbstractCegarLoop]: Abstraction has has 654 places, 474 transitions, 7044 flow [2022-01-19 13:07:22,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:22,367 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:22,367 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:22,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-01-19 13:07:22,367 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:22,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:22,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1792242654, now seen corresponding path program 125 times [2022-01-19 13:07:22,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:22,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259949930] [2022-01-19 13:07:22,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:22,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:22,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:22,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259949930] [2022-01-19 13:07:22,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259949930] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:22,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:22,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:22,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651535890] [2022-01-19 13:07:22,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:22,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:22,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:22,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:22,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:22,489 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:22,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 474 transitions, 7044 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:22,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:22,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:22,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:23,534 INFO L129 PetriNetUnfolder]: 687/2506 cut-off events. [2022-01-19 13:07:23,534 INFO L130 PetriNetUnfolder]: For 35136/35156 co-relation queries the response was YES. [2022-01-19 13:07:23,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13670 conditions, 2506 events. 687/2506 cut-off events. For 35136/35156 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 18766 event pairs, 378 based on Foata normal form. 3/2414 useless extension candidates. Maximal degree in co-relation 13437. Up to 914 conditions per place. [2022-01-19 13:07:23,579 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 237 selfloop transitions, 99 changer transitions 58/535 dead transitions. [2022-01-19 13:07:23,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 535 transitions, 9061 flow [2022-01-19 13:07:23,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:07:23,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:07:23,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4652 transitions. [2022-01-19 13:07:23,582 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638752052545156 [2022-01-19 13:07:23,582 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4652 transitions. [2022-01-19 13:07:23,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4652 transitions. [2022-01-19 13:07:23,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:23,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4652 transitions. [2022-01-19 13:07:23,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.41379310344828) internal successors, (4652), 29 states have internal predecessors, (4652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:23,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:23,588 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:23,588 INFO L186 Difference]: Start difference. First operand has 654 places, 474 transitions, 7044 flow. Second operand 29 states and 4652 transitions. [2022-01-19 13:07:23,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 535 transitions, 9061 flow [2022-01-19 13:07:23,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 535 transitions, 8702 flow, removed 83 selfloop flow, removed 25 redundant places. [2022-01-19 13:07:23,863 INFO L242 Difference]: Finished difference. Result has 645 places, 461 transitions, 6684 flow [2022-01-19 13:07:23,863 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6787, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6684, PETRI_PLACES=645, PETRI_TRANSITIONS=461} [2022-01-19 13:07:23,864 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 458 predicate places. [2022-01-19 13:07:23,864 INFO L470 AbstractCegarLoop]: Abstraction has has 645 places, 461 transitions, 6684 flow [2022-01-19 13:07:23,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:23,864 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:23,864 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:23,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-01-19 13:07:23,864 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:23,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:23,865 INFO L85 PathProgramCache]: Analyzing trace with hash -595019592, now seen corresponding path program 126 times [2022-01-19 13:07:23,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:23,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729928101] [2022-01-19 13:07:23,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:23,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:23,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:23,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729928101] [2022-01-19 13:07:23,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729928101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:23,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:23,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:23,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939718193] [2022-01-19 13:07:23,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:23,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:23,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:23,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:23,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:23,978 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:23,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 461 transitions, 6684 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:23,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:23,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:23,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:25,015 INFO L129 PetriNetUnfolder]: 660/2428 cut-off events. [2022-01-19 13:07:25,015 INFO L130 PetriNetUnfolder]: For 31312/31332 co-relation queries the response was YES. [2022-01-19 13:07:25,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12768 conditions, 2428 events. 660/2428 cut-off events. For 31312/31332 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 18067 event pairs, 376 based on Foata normal form. 3/2337 useless extension candidates. Maximal degree in co-relation 12543. Up to 900 conditions per place. [2022-01-19 13:07:25,059 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 214 selfloop transitions, 80 changer transitions 61/496 dead transitions. [2022-01-19 13:07:25,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 496 transitions, 7898 flow [2022-01-19 13:07:25,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:07:25,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:07:25,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4804 transitions. [2022-01-19 13:07:25,061 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625396825396825 [2022-01-19 13:07:25,061 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4804 transitions. [2022-01-19 13:07:25,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4804 transitions. [2022-01-19 13:07:25,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:25,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4804 transitions. [2022-01-19 13:07:25,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.13333333333333) internal successors, (4804), 30 states have internal predecessors, (4804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:25,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:25,068 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:25,068 INFO L186 Difference]: Start difference. First operand has 645 places, 461 transitions, 6684 flow. Second operand 30 states and 4804 transitions. [2022-01-19 13:07:25,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 496 transitions, 7898 flow [2022-01-19 13:07:25,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 496 transitions, 7519 flow, removed 29 selfloop flow, removed 29 redundant places. [2022-01-19 13:07:25,292 INFO L242 Difference]: Finished difference. Result has 624 places, 419 transitions, 5505 flow [2022-01-19 13:07:25,293 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6335, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5505, PETRI_PLACES=624, PETRI_TRANSITIONS=419} [2022-01-19 13:07:25,293 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 437 predicate places. [2022-01-19 13:07:25,293 INFO L470 AbstractCegarLoop]: Abstraction has has 624 places, 419 transitions, 5505 flow [2022-01-19 13:07:25,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:25,293 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:25,293 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:25,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-01-19 13:07:25,293 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:25,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:25,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1959926434, now seen corresponding path program 127 times [2022-01-19 13:07:25,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:25,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362823835] [2022-01-19 13:07:25,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:25,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:25,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:25,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362823835] [2022-01-19 13:07:25,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362823835] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:25,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:25,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:25,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298671173] [2022-01-19 13:07:25,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:25,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:25,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:25,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:25,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:25,411 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:25,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 419 transitions, 5505 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:25,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:25,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:25,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:26,513 INFO L129 PetriNetUnfolder]: 660/2445 cut-off events. [2022-01-19 13:07:26,513 INFO L130 PetriNetUnfolder]: For 29990/30010 co-relation queries the response was YES. [2022-01-19 13:07:26,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12615 conditions, 2445 events. 660/2445 cut-off events. For 29990/30010 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 18280 event pairs, 374 based on Foata normal form. 3/2357 useless extension candidates. Maximal degree in co-relation 12402. Up to 886 conditions per place. [2022-01-19 13:07:26,548 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 218 selfloop transitions, 77 changer transitions 68/504 dead transitions. [2022-01-19 13:07:26,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 504 transitions, 7820 flow [2022-01-19 13:07:26,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:07:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:07:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5757 transitions. [2022-01-19 13:07:26,551 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615079365079365 [2022-01-19 13:07:26,551 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5757 transitions. [2022-01-19 13:07:26,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5757 transitions. [2022-01-19 13:07:26,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:26,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5757 transitions. [2022-01-19 13:07:26,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 159.91666666666666) internal successors, (5757), 36 states have internal predecessors, (5757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:26,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:26,561 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:26,561 INFO L186 Difference]: Start difference. First operand has 624 places, 419 transitions, 5505 flow. Second operand 36 states and 5757 transitions. [2022-01-19 13:07:26,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 504 transitions, 7820 flow [2022-01-19 13:07:26,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 504 transitions, 7103 flow, removed 30 selfloop flow, removed 43 redundant places. [2022-01-19 13:07:26,729 INFO L242 Difference]: Finished difference. Result has 593 places, 413 transitions, 5029 flow [2022-01-19 13:07:26,730 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4956, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5029, PETRI_PLACES=593, PETRI_TRANSITIONS=413} [2022-01-19 13:07:26,730 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 406 predicate places. [2022-01-19 13:07:26,730 INFO L470 AbstractCegarLoop]: Abstraction has has 593 places, 413 transitions, 5029 flow [2022-01-19 13:07:26,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:26,730 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:26,730 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:26,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-01-19 13:07:26,730 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:26,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:26,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1141650722, now seen corresponding path program 128 times [2022-01-19 13:07:26,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:26,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472699431] [2022-01-19 13:07:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:26,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:26,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:26,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472699431] [2022-01-19 13:07:26,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472699431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:26,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:26,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:26,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956659034] [2022-01-19 13:07:26,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:26,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:26,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:26,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:26,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:26,838 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:26,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 413 transitions, 5029 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:26,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:26,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:26,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:27,738 INFO L129 PetriNetUnfolder]: 625/2395 cut-off events. [2022-01-19 13:07:27,738 INFO L130 PetriNetUnfolder]: For 25207/25213 co-relation queries the response was YES. [2022-01-19 13:07:27,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11546 conditions, 2395 events. 625/2395 cut-off events. For 25207/25213 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17807 event pairs, 406 based on Foata normal form. 1/2302 useless extension candidates. Maximal degree in co-relation 11338. Up to 879 conditions per place. [2022-01-19 13:07:27,777 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 203 selfloop transitions, 37 changer transitions 64/445 dead transitions. [2022-01-19 13:07:27,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 445 transitions, 6019 flow [2022-01-19 13:07:27,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:07:27,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:07:27,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4789 transitions. [2022-01-19 13:07:27,779 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7601587301587301 [2022-01-19 13:07:27,779 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4789 transitions. [2022-01-19 13:07:27,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4789 transitions. [2022-01-19 13:07:27,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:27,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4789 transitions. [2022-01-19 13:07:27,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.63333333333333) internal successors, (4789), 30 states have internal predecessors, (4789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:27,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:27,785 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:27,785 INFO L186 Difference]: Start difference. First operand has 593 places, 413 transitions, 5029 flow. Second operand 30 states and 4789 transitions. [2022-01-19 13:07:27,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 445 transitions, 6019 flow [2022-01-19 13:07:27,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 445 transitions, 5717 flow, removed 41 selfloop flow, removed 40 redundant places. [2022-01-19 13:07:27,928 INFO L242 Difference]: Finished difference. Result has 567 places, 365 transitions, 3865 flow [2022-01-19 13:07:27,928 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4749, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3865, PETRI_PLACES=567, PETRI_TRANSITIONS=365} [2022-01-19 13:07:27,929 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 380 predicate places. [2022-01-19 13:07:27,929 INFO L470 AbstractCegarLoop]: Abstraction has has 567 places, 365 transitions, 3865 flow [2022-01-19 13:07:27,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:27,929 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:27,929 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:27,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-01-19 13:07:27,929 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:27,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:27,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1310608822, now seen corresponding path program 129 times [2022-01-19 13:07:27,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:27,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852371496] [2022-01-19 13:07:27,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:27,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:28,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:28,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852371496] [2022-01-19 13:07:28,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852371496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:28,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:28,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:28,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761822143] [2022-01-19 13:07:28,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:28,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:28,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:28,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:28,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:28,044 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:28,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 365 transitions, 3865 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:28,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:28,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:28,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:28,858 INFO L129 PetriNetUnfolder]: 597/2215 cut-off events. [2022-01-19 13:07:28,858 INFO L130 PetriNetUnfolder]: For 21691/21711 co-relation queries the response was YES. [2022-01-19 13:07:28,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10531 conditions, 2215 events. 597/2215 cut-off events. For 21691/21711 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15913 event pairs, 364 based on Foata normal form. 3/2128 useless extension candidates. Maximal degree in co-relation 10343. Up to 863 conditions per place. [2022-01-19 13:07:28,892 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 159 selfloop transitions, 39 changer transitions 63/402 dead transitions. [2022-01-19 13:07:28,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 402 transitions, 4866 flow [2022-01-19 13:07:28,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:07:28,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:07:28,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4796 transitions. [2022-01-19 13:07:28,894 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612698412698413 [2022-01-19 13:07:28,895 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4796 transitions. [2022-01-19 13:07:28,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4796 transitions. [2022-01-19 13:07:28,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:28,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4796 transitions. [2022-01-19 13:07:28,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.86666666666667) internal successors, (4796), 30 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:28,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:28,900 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:28,900 INFO L186 Difference]: Start difference. First operand has 567 places, 365 transitions, 3865 flow. Second operand 30 states and 4796 transitions. [2022-01-19 13:07:28,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 402 transitions, 4866 flow [2022-01-19 13:07:29,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 402 transitions, 4588 flow, removed 26 selfloop flow, removed 28 redundant places. [2022-01-19 13:07:29,007 INFO L242 Difference]: Finished difference. Result has 518 places, 323 transitions, 2957 flow [2022-01-19 13:07:29,007 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3627, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2957, PETRI_PLACES=518, PETRI_TRANSITIONS=323} [2022-01-19 13:07:29,007 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 331 predicate places. [2022-01-19 13:07:29,008 INFO L470 AbstractCegarLoop]: Abstraction has has 518 places, 323 transitions, 2957 flow [2022-01-19 13:07:29,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:29,008 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:29,008 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:29,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-01-19 13:07:29,008 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:29,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:29,008 INFO L85 PathProgramCache]: Analyzing trace with hash -471642470, now seen corresponding path program 130 times [2022-01-19 13:07:29,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:29,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033317418] [2022-01-19 13:07:29,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:29,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:29,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:29,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033317418] [2022-01-19 13:07:29,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033317418] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:29,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:29,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:29,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547956613] [2022-01-19 13:07:29,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:29,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:29,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:29,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:29,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:29,145 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:29,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 323 transitions, 2957 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:29,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:29,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:29,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:29,891 INFO L129 PetriNetUnfolder]: 565/2098 cut-off events. [2022-01-19 13:07:29,891 INFO L130 PetriNetUnfolder]: For 18525/18545 co-relation queries the response was YES. [2022-01-19 13:07:29,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9586 conditions, 2098 events. 565/2098 cut-off events. For 18525/18545 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14785 event pairs, 358 based on Foata normal form. 3/2013 useless extension candidates. Maximal degree in co-relation 9406. Up to 841 conditions per place. [2022-01-19 13:07:29,921 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 133 selfloop transitions, 10 changer transitions 65/349 dead transitions. [2022-01-19 13:07:29,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 349 transitions, 3638 flow [2022-01-19 13:07:29,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:07:29,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:07:29,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4768 transitions. [2022-01-19 13:07:29,924 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7568253968253968 [2022-01-19 13:07:29,924 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4768 transitions. [2022-01-19 13:07:29,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4768 transitions. [2022-01-19 13:07:29,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:29,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4768 transitions. [2022-01-19 13:07:29,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 158.93333333333334) internal successors, (4768), 30 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:29,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:29,929 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:29,929 INFO L186 Difference]: Start difference. First operand has 518 places, 323 transitions, 2957 flow. Second operand 30 states and 4768 transitions. [2022-01-19 13:07:29,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 349 transitions, 3638 flow [2022-01-19 13:07:30,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 349 transitions, 3404 flow, removed 23 selfloop flow, removed 33 redundant places. [2022-01-19 13:07:30,023 INFO L242 Difference]: Finished difference. Result has 472 places, 268 transitions, 1865 flow [2022-01-19 13:07:30,023 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2737, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1865, PETRI_PLACES=472, PETRI_TRANSITIONS=268} [2022-01-19 13:07:30,023 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 285 predicate places. [2022-01-19 13:07:30,023 INFO L470 AbstractCegarLoop]: Abstraction has has 472 places, 268 transitions, 1865 flow [2022-01-19 13:07:30,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:30,024 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:30,024 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:30,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-01-19 13:07:30,024 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:30,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1399152340, now seen corresponding path program 131 times [2022-01-19 13:07:30,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:30,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926426886] [2022-01-19 13:07:30,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:30,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:30,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:30,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926426886] [2022-01-19 13:07:30,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926426886] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:30,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:30,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:30,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454060007] [2022-01-19 13:07:30,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:30,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:30,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:30,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:30,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:30,143 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:30,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 268 transitions, 1865 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:30,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:30,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:30,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:31,231 INFO L129 PetriNetUnfolder]: 598/2188 cut-off events. [2022-01-19 13:07:31,232 INFO L130 PetriNetUnfolder]: For 18836/18849 co-relation queries the response was YES. [2022-01-19 13:07:31,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9987 conditions, 2188 events. 598/2188 cut-off events. For 18836/18849 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 15645 event pairs, 275 based on Foata normal form. 1/2110 useless extension candidates. Maximal degree in co-relation 9820. Up to 777 conditions per place. [2022-01-19 13:07:31,262 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 180 selfloop transitions, 57 changer transitions 84/462 dead transitions. [2022-01-19 13:07:31,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 462 transitions, 5056 flow [2022-01-19 13:07:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-19 13:07:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-01-19 13:07:31,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 8587 transitions. [2022-01-19 13:07:31,266 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7572310405643738 [2022-01-19 13:07:31,266 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 8587 transitions. [2022-01-19 13:07:31,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 8587 transitions. [2022-01-19 13:07:31,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:31,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 8587 transitions. [2022-01-19 13:07:31,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 159.0185185185185) internal successors, (8587), 54 states have internal predecessors, (8587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:31,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:31,277 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:31,277 INFO L186 Difference]: Start difference. First operand has 472 places, 268 transitions, 1865 flow. Second operand 54 states and 8587 transitions. [2022-01-19 13:07:31,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 462 transitions, 5056 flow [2022-01-19 13:07:31,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 462 transitions, 4760 flow, removed 71 selfloop flow, removed 31 redundant places. [2022-01-19 13:07:31,344 INFO L242 Difference]: Finished difference. Result has 460 places, 281 transitions, 2171 flow [2022-01-19 13:07:31,345 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=2171, PETRI_PLACES=460, PETRI_TRANSITIONS=281} [2022-01-19 13:07:31,345 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 273 predicate places. [2022-01-19 13:07:31,345 INFO L470 AbstractCegarLoop]: Abstraction has has 460 places, 281 transitions, 2171 flow [2022-01-19 13:07:31,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:31,345 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:31,345 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:31,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-01-19 13:07:31,345 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:31,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:31,346 INFO L85 PathProgramCache]: Analyzing trace with hash -307017874, now seen corresponding path program 132 times [2022-01-19 13:07:31,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:31,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300755185] [2022-01-19 13:07:31,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:31,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:31,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:31,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:31,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300755185] [2022-01-19 13:07:31,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300755185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:31,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:31,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:31,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652741370] [2022-01-19 13:07:31,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:31,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:31,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:31,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:31,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:31,459 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:31,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 281 transitions, 2171 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:31,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:31,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:31,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:32,582 INFO L129 PetriNetUnfolder]: 656/2333 cut-off events. [2022-01-19 13:07:32,583 INFO L130 PetriNetUnfolder]: For 24656/24669 co-relation queries the response was YES. [2022-01-19 13:07:32,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11655 conditions, 2333 events. 656/2333 cut-off events. For 24656/24669 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 16861 event pairs, 348 based on Foata normal form. 1/2244 useless extension candidates. Maximal degree in co-relation 11472. Up to 792 conditions per place. [2022-01-19 13:07:32,618 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 179 selfloop transitions, 54 changer transitions 79/453 dead transitions. [2022-01-19 13:07:32,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 453 transitions, 5913 flow [2022-01-19 13:07:32,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-19 13:07:32,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-01-19 13:07:32,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8125 transitions. [2022-01-19 13:07:32,628 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7586367880485527 [2022-01-19 13:07:32,628 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8125 transitions. [2022-01-19 13:07:32,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8125 transitions. [2022-01-19 13:07:32,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:32,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8125 transitions. [2022-01-19 13:07:32,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 159.31372549019608) internal successors, (8125), 51 states have internal predecessors, (8125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:32,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:32,642 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:32,642 INFO L186 Difference]: Start difference. First operand has 460 places, 281 transitions, 2171 flow. Second operand 51 states and 8125 transitions. [2022-01-19 13:07:32,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 453 transitions, 5913 flow [2022-01-19 13:07:32,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 453 transitions, 5217 flow, removed 304 selfloop flow, removed 40 redundant places. [2022-01-19 13:07:32,764 INFO L242 Difference]: Finished difference. Result has 474 places, 306 transitions, 2758 flow [2022-01-19 13:07:32,764 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=2758, PETRI_PLACES=474, PETRI_TRANSITIONS=306} [2022-01-19 13:07:32,764 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 287 predicate places. [2022-01-19 13:07:32,764 INFO L470 AbstractCegarLoop]: Abstraction has has 474 places, 306 transitions, 2758 flow [2022-01-19 13:07:32,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:32,765 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:32,765 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:32,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-01-19 13:07:32,765 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:32,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:32,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1321919674, now seen corresponding path program 133 times [2022-01-19 13:07:32,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:32,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623098878] [2022-01-19 13:07:32,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:32,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:32,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:32,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:32,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623098878] [2022-01-19 13:07:32,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623098878] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:32,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:32,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:32,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937914768] [2022-01-19 13:07:32,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:32,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:32,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:32,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:32,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:32,884 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:32,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 306 transitions, 2758 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:32,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:32,884 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:32,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:34,096 INFO L129 PetriNetUnfolder]: 664/2377 cut-off events. [2022-01-19 13:07:34,096 INFO L130 PetriNetUnfolder]: For 32508/32521 co-relation queries the response was YES. [2022-01-19 13:07:34,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12902 conditions, 2377 events. 664/2377 cut-off events. For 32508/32521 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 17345 event pairs, 288 based on Foata normal form. 1/2296 useless extension candidates. Maximal degree in co-relation 12711. Up to 805 conditions per place. [2022-01-19 13:07:34,139 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 208 selfloop transitions, 69 changer transitions 82/500 dead transitions. [2022-01-19 13:07:34,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 500 transitions, 6956 flow [2022-01-19 13:07:34,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 13:07:34,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 13:07:34,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 8437 transitions. [2022-01-19 13:07:34,143 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7580413297394429 [2022-01-19 13:07:34,143 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 8437 transitions. [2022-01-19 13:07:34,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 8437 transitions. [2022-01-19 13:07:34,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:34,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 8437 transitions. [2022-01-19 13:07:34,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 159.18867924528303) internal successors, (8437), 53 states have internal predecessors, (8437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:34,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:34,154 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:34,154 INFO L186 Difference]: Start difference. First operand has 474 places, 306 transitions, 2758 flow. Second operand 53 states and 8437 transitions. [2022-01-19 13:07:34,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 500 transitions, 6956 flow [2022-01-19 13:07:34,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 500 transitions, 6376 flow, removed 256 selfloop flow, removed 28 redundant places. [2022-01-19 13:07:34,284 INFO L242 Difference]: Finished difference. Result has 501 places, 321 transitions, 3101 flow [2022-01-19 13:07:34,285 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=3101, PETRI_PLACES=501, PETRI_TRANSITIONS=321} [2022-01-19 13:07:34,285 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 314 predicate places. [2022-01-19 13:07:34,285 INFO L470 AbstractCegarLoop]: Abstraction has has 501 places, 321 transitions, 3101 flow [2022-01-19 13:07:34,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:34,285 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:34,285 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:34,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-01-19 13:07:34,286 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:34,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:34,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1557014560, now seen corresponding path program 134 times [2022-01-19 13:07:34,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:34,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644152091] [2022-01-19 13:07:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:34,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:34,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:34,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:34,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644152091] [2022-01-19 13:07:34,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644152091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:34,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:34,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:34,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494878309] [2022-01-19 13:07:34,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:34,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:34,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:34,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:34,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:34,398 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:34,399 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 321 transitions, 3101 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:34,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:34,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:34,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:35,724 INFO L129 PetriNetUnfolder]: 659/2357 cut-off events. [2022-01-19 13:07:35,724 INFO L130 PetriNetUnfolder]: For 35591/35604 co-relation queries the response was YES. [2022-01-19 13:07:35,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13261 conditions, 2357 events. 659/2357 cut-off events. For 35591/35604 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 17077 event pairs, 319 based on Foata normal form. 1/2273 useless extension candidates. Maximal degree in co-relation 13054. Up to 803 conditions per place. [2022-01-19 13:07:35,763 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 208 selfloop transitions, 66 changer transitions 82/497 dead transitions. [2022-01-19 13:07:35,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 497 transitions, 7651 flow [2022-01-19 13:07:35,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-19 13:07:35,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-01-19 13:07:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8281 transitions. [2022-01-19 13:07:35,767 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7583333333333333 [2022-01-19 13:07:35,767 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8281 transitions. [2022-01-19 13:07:35,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8281 transitions. [2022-01-19 13:07:35,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:35,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8281 transitions. [2022-01-19 13:07:35,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.25) internal successors, (8281), 52 states have internal predecessors, (8281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:35,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:35,777 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:35,777 INFO L186 Difference]: Start difference. First operand has 501 places, 321 transitions, 3101 flow. Second operand 52 states and 8281 transitions. [2022-01-19 13:07:35,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 497 transitions, 7651 flow [2022-01-19 13:07:35,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 497 transitions, 6945 flow, removed 315 selfloop flow, removed 39 redundant places. [2022-01-19 13:07:35,937 INFO L242 Difference]: Finished difference. Result has 516 places, 334 transitions, 3569 flow [2022-01-19 13:07:35,937 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2911, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=3569, PETRI_PLACES=516, PETRI_TRANSITIONS=334} [2022-01-19 13:07:35,937 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 329 predicate places. [2022-01-19 13:07:35,937 INFO L470 AbstractCegarLoop]: Abstraction has has 516 places, 334 transitions, 3569 flow [2022-01-19 13:07:35,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:35,938 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:35,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:35,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-01-19 13:07:35,938 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:35,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:35,938 INFO L85 PathProgramCache]: Analyzing trace with hash -743567740, now seen corresponding path program 135 times [2022-01-19 13:07:35,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:35,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004376443] [2022-01-19 13:07:35,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:35,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:36,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:36,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004376443] [2022-01-19 13:07:36,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004376443] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:36,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:36,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:36,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352388883] [2022-01-19 13:07:36,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:36,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:36,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:36,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:36,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:36,058 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:36,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 334 transitions, 3569 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:36,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:36,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:36,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:37,214 INFO L129 PetriNetUnfolder]: 651/2330 cut-off events. [2022-01-19 13:07:37,214 INFO L130 PetriNetUnfolder]: For 39361/39374 co-relation queries the response was YES. [2022-01-19 13:07:37,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13447 conditions, 2330 events. 651/2330 cut-off events. For 39361/39374 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 16841 event pairs, 277 based on Foata normal form. 1/2251 useless extension candidates. Maximal degree in co-relation 13232. Up to 805 conditions per place. [2022-01-19 13:07:37,261 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 196 selfloop transitions, 85 changer transitions 76/498 dead transitions. [2022-01-19 13:07:37,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 498 transitions, 7134 flow [2022-01-19 13:07:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 13:07:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 13:07:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7328 transitions. [2022-01-19 13:07:37,265 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.758592132505176 [2022-01-19 13:07:37,265 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7328 transitions. [2022-01-19 13:07:37,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7328 transitions. [2022-01-19 13:07:37,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:37,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7328 transitions. [2022-01-19 13:07:37,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.30434782608697) internal successors, (7328), 46 states have internal predecessors, (7328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:37,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:37,276 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:37,276 INFO L186 Difference]: Start difference. First operand has 516 places, 334 transitions, 3569 flow. Second operand 46 states and 7328 transitions. [2022-01-19 13:07:37,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 498 transitions, 7134 flow [2022-01-19 13:07:37,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 498 transitions, 6374 flow, removed 337 selfloop flow, removed 38 redundant places. [2022-01-19 13:07:37,467 INFO L242 Difference]: Finished difference. Result has 515 places, 338 transitions, 3636 flow [2022-01-19 13:07:37,467 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3283, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3636, PETRI_PLACES=515, PETRI_TRANSITIONS=338} [2022-01-19 13:07:37,468 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 328 predicate places. [2022-01-19 13:07:37,468 INFO L470 AbstractCegarLoop]: Abstraction has has 515 places, 338 transitions, 3636 flow [2022-01-19 13:07:37,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:37,468 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:37,468 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:37,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-01-19 13:07:37,469 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:37,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:37,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1771564934, now seen corresponding path program 136 times [2022-01-19 13:07:37,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:37,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787636200] [2022-01-19 13:07:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:37,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:37,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:37,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787636200] [2022-01-19 13:07:37,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787636200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:37,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:37,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:37,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703211858] [2022-01-19 13:07:37,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:37,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:37,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:37,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:37,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:37,598 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:37,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 338 transitions, 3636 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:37,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:37,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:37,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:38,807 INFO L129 PetriNetUnfolder]: 668/2384 cut-off events. [2022-01-19 13:07:38,808 INFO L130 PetriNetUnfolder]: For 38973/38986 co-relation queries the response was YES. [2022-01-19 13:07:38,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14042 conditions, 2384 events. 668/2384 cut-off events. For 38973/38986 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 17433 event pairs, 290 based on Foata normal form. 1/2301 useless extension candidates. Maximal degree in co-relation 13832. Up to 815 conditions per place. [2022-01-19 13:07:38,849 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 213 selfloop transitions, 82 changer transitions 74/510 dead transitions. [2022-01-19 13:07:38,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 510 transitions, 7860 flow [2022-01-19 13:07:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 13:07:38,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 13:07:38,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7177 transitions. [2022-01-19 13:07:38,852 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7594708994708995 [2022-01-19 13:07:38,852 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7177 transitions. [2022-01-19 13:07:38,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7177 transitions. [2022-01-19 13:07:38,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:38,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7177 transitions. [2022-01-19 13:07:38,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.48888888888888) internal successors, (7177), 45 states have internal predecessors, (7177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:38,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:38,861 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:38,861 INFO L186 Difference]: Start difference. First operand has 515 places, 338 transitions, 3636 flow. Second operand 45 states and 7177 transitions. [2022-01-19 13:07:38,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 510 transitions, 7860 flow [2022-01-19 13:07:39,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 510 transitions, 7239 flow, removed 263 selfloop flow, removed 33 redundant places. [2022-01-19 13:07:39,044 INFO L242 Difference]: Finished difference. Result has 525 places, 359 transitions, 4251 flow [2022-01-19 13:07:39,045 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3464, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4251, PETRI_PLACES=525, PETRI_TRANSITIONS=359} [2022-01-19 13:07:39,045 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 338 predicate places. [2022-01-19 13:07:39,045 INFO L470 AbstractCegarLoop]: Abstraction has has 525 places, 359 transitions, 4251 flow [2022-01-19 13:07:39,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:39,045 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:39,045 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:39,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-01-19 13:07:39,045 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:39,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:39,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1224069286, now seen corresponding path program 137 times [2022-01-19 13:07:39,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:39,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240841174] [2022-01-19 13:07:39,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:39,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:39,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:39,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240841174] [2022-01-19 13:07:39,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240841174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:39,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:39,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:39,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440491017] [2022-01-19 13:07:39,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:39,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:39,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:39,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:39,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:39,154 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:39,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 359 transitions, 4251 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:39,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:39,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:39,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:40,405 INFO L129 PetriNetUnfolder]: 663/2381 cut-off events. [2022-01-19 13:07:40,405 INFO L130 PetriNetUnfolder]: For 40672/40685 co-relation queries the response was YES. [2022-01-19 13:07:40,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14289 conditions, 2381 events. 663/2381 cut-off events. For 40672/40685 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 17413 event pairs, 292 based on Foata normal form. 1/2299 useless extension candidates. Maximal degree in co-relation 14075. Up to 813 conditions per place. [2022-01-19 13:07:40,441 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 214 selfloop transitions, 82 changer transitions 75/512 dead transitions. [2022-01-19 13:07:40,441 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 512 transitions, 8003 flow [2022-01-19 13:07:40,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 13:07:40,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 13:07:40,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7335 transitions. [2022-01-19 13:07:40,445 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593167701863354 [2022-01-19 13:07:40,445 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7335 transitions. [2022-01-19 13:07:40,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7335 transitions. [2022-01-19 13:07:40,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:40,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7335 transitions. [2022-01-19 13:07:40,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.45652173913044) internal successors, (7335), 46 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:40,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:40,455 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:40,455 INFO L186 Difference]: Start difference. First operand has 525 places, 359 transitions, 4251 flow. Second operand 46 states and 7335 transitions. [2022-01-19 13:07:40,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 512 transitions, 8003 flow [2022-01-19 13:07:40,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 512 transitions, 7305 flow, removed 330 selfloop flow, removed 27 redundant places. [2022-01-19 13:07:40,663 INFO L242 Difference]: Finished difference. Result has 543 places, 362 transitions, 4329 flow [2022-01-19 13:07:40,663 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3998, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4329, PETRI_PLACES=543, PETRI_TRANSITIONS=362} [2022-01-19 13:07:40,664 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 356 predicate places. [2022-01-19 13:07:40,664 INFO L470 AbstractCegarLoop]: Abstraction has has 543 places, 362 transitions, 4329 flow [2022-01-19 13:07:40,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:40,664 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:40,664 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:40,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-01-19 13:07:40,664 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:40,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:40,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1784084954, now seen corresponding path program 138 times [2022-01-19 13:07:40,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:40,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100350771] [2022-01-19 13:07:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:40,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:40,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:40,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:40,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100350771] [2022-01-19 13:07:40,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100350771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:40,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:40,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:40,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205909767] [2022-01-19 13:07:40,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:40,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:40,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:40,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:40,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:40,777 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:40,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 362 transitions, 4329 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:40,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:40,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:40,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:42,013 INFO L129 PetriNetUnfolder]: 699/2451 cut-off events. [2022-01-19 13:07:42,013 INFO L130 PetriNetUnfolder]: For 44432/44445 co-relation queries the response was YES. [2022-01-19 13:07:42,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15235 conditions, 2451 events. 699/2451 cut-off events. For 44432/44445 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 17943 event pairs, 333 based on Foata normal form. 1/2365 useless extension candidates. Maximal degree in co-relation 15015. Up to 823 conditions per place. [2022-01-19 13:07:42,060 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 212 selfloop transitions, 100 changer transitions 73/526 dead transitions. [2022-01-19 13:07:42,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 526 transitions, 8605 flow [2022-01-19 13:07:42,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 13:07:42,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 13:07:42,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7021 transitions. [2022-01-19 13:07:42,064 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598484848484849 [2022-01-19 13:07:42,064 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7021 transitions. [2022-01-19 13:07:42,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7021 transitions. [2022-01-19 13:07:42,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:42,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7021 transitions. [2022-01-19 13:07:42,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.5681818181818) internal successors, (7021), 44 states have internal predecessors, (7021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:42,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:42,074 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:42,074 INFO L186 Difference]: Start difference. First operand has 543 places, 362 transitions, 4329 flow. Second operand 44 states and 7021 transitions. [2022-01-19 13:07:42,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 526 transitions, 8605 flow [2022-01-19 13:07:42,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 526 transitions, 8035 flow, removed 239 selfloop flow, removed 31 redundant places. [2022-01-19 13:07:42,284 INFO L242 Difference]: Finished difference. Result has 558 places, 386 transitions, 5069 flow [2022-01-19 13:07:42,284 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4154, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5069, PETRI_PLACES=558, PETRI_TRANSITIONS=386} [2022-01-19 13:07:42,285 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 371 predicate places. [2022-01-19 13:07:42,285 INFO L470 AbstractCegarLoop]: Abstraction has has 558 places, 386 transitions, 5069 flow [2022-01-19 13:07:42,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:42,285 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:42,285 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:42,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-01-19 13:07:42,285 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:42,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:42,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1765005700, now seen corresponding path program 139 times [2022-01-19 13:07:42,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:42,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834295599] [2022-01-19 13:07:42,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:42,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:42,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:42,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834295599] [2022-01-19 13:07:42,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834295599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:42,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:42,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:42,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189276535] [2022-01-19 13:07:42,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:42,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:42,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:42,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:42,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:42,396 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:42,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 386 transitions, 5069 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:42,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:42,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:42,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:43,674 INFO L129 PetriNetUnfolder]: 730/2548 cut-off events. [2022-01-19 13:07:43,674 INFO L130 PetriNetUnfolder]: For 54948/54961 co-relation queries the response was YES. [2022-01-19 13:07:43,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16887 conditions, 2548 events. 730/2548 cut-off events. For 54948/54961 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 18969 event pairs, 327 based on Foata normal form. 1/2462 useless extension candidates. Maximal degree in co-relation 16659. Up to 833 conditions per place. [2022-01-19 13:07:43,721 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 238 selfloop transitions, 98 changer transitions 72/549 dead transitions. [2022-01-19 13:07:43,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 549 transitions, 9753 flow [2022-01-19 13:07:43,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 13:07:43,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 13:07:43,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7340 transitions. [2022-01-19 13:07:43,725 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598343685300207 [2022-01-19 13:07:43,725 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7340 transitions. [2022-01-19 13:07:43,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7340 transitions. [2022-01-19 13:07:43,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:43,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7340 transitions. [2022-01-19 13:07:43,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.56521739130434) internal successors, (7340), 46 states have internal predecessors, (7340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:43,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:43,734 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:43,734 INFO L186 Difference]: Start difference. First operand has 558 places, 386 transitions, 5069 flow. Second operand 46 states and 7340 transitions. [2022-01-19 13:07:43,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 549 transitions, 9753 flow [2022-01-19 13:07:43,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 549 transitions, 8893 flow, removed 378 selfloop flow, removed 31 redundant places. [2022-01-19 13:07:43,988 INFO L242 Difference]: Finished difference. Result has 574 places, 405 transitions, 5573 flow [2022-01-19 13:07:43,988 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4810, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=5573, PETRI_PLACES=574, PETRI_TRANSITIONS=405} [2022-01-19 13:07:43,988 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 387 predicate places. [2022-01-19 13:07:43,988 INFO L470 AbstractCegarLoop]: Abstraction has has 574 places, 405 transitions, 5573 flow [2022-01-19 13:07:43,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:43,989 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:43,989 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:43,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-01-19 13:07:43,989 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:43,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:43,989 INFO L85 PathProgramCache]: Analyzing trace with hash -408610136, now seen corresponding path program 140 times [2022-01-19 13:07:43,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:43,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009667697] [2022-01-19 13:07:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:43,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:44,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:44,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009667697] [2022-01-19 13:07:44,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009667697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:44,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:44,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:44,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166095162] [2022-01-19 13:07:44,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:44,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:44,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:44,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:44,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:44,098 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:44,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 405 transitions, 5573 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:44,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:44,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:44,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:45,351 INFO L129 PetriNetUnfolder]: 724/2543 cut-off events. [2022-01-19 13:07:45,352 INFO L130 PetriNetUnfolder]: For 54348/54361 co-relation queries the response was YES. [2022-01-19 13:07:45,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16899 conditions, 2543 events. 724/2543 cut-off events. For 54348/54361 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 18994 event pairs, 335 based on Foata normal form. 1/2456 useless extension candidates. Maximal degree in co-relation 16667. Up to 831 conditions per place. [2022-01-19 13:07:45,399 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 246 selfloop transitions, 97 changer transitions 73/557 dead transitions. [2022-01-19 13:07:45,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 557 transitions, 10015 flow [2022-01-19 13:07:45,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 13:07:45,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 13:07:45,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7186 transitions. [2022-01-19 13:07:45,402 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604232804232804 [2022-01-19 13:07:45,402 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7186 transitions. [2022-01-19 13:07:45,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7186 transitions. [2022-01-19 13:07:45,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:45,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7186 transitions. [2022-01-19 13:07:45,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.6888888888889) internal successors, (7186), 45 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:45,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:45,411 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:45,411 INFO L186 Difference]: Start difference. First operand has 574 places, 405 transitions, 5573 flow. Second operand 45 states and 7186 transitions. [2022-01-19 13:07:45,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 557 transitions, 10015 flow [2022-01-19 13:07:45,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 557 transitions, 9348 flow, removed 297 selfloop flow, removed 28 redundant places. [2022-01-19 13:07:45,682 INFO L242 Difference]: Finished difference. Result has 591 places, 413 transitions, 5899 flow [2022-01-19 13:07:45,683 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5375, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=5899, PETRI_PLACES=591, PETRI_TRANSITIONS=413} [2022-01-19 13:07:45,683 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 404 predicate places. [2022-01-19 13:07:45,683 INFO L470 AbstractCegarLoop]: Abstraction has has 591 places, 413 transitions, 5899 flow [2022-01-19 13:07:45,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:45,683 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:45,683 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:45,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-01-19 13:07:45,683 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:45,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:45,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2099298558, now seen corresponding path program 141 times [2022-01-19 13:07:45,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:45,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702370122] [2022-01-19 13:07:45,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:45,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:45,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:45,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702370122] [2022-01-19 13:07:45,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702370122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:45,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:45,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:45,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105519512] [2022-01-19 13:07:45,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:45,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:45,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:45,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:45,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:45,796 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:45,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 413 transitions, 5899 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:45,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:45,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:45,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:47,121 INFO L129 PetriNetUnfolder]: 771/2644 cut-off events. [2022-01-19 13:07:47,121 INFO L130 PetriNetUnfolder]: For 58752/58765 co-relation queries the response was YES. [2022-01-19 13:07:47,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18320 conditions, 2644 events. 771/2644 cut-off events. For 58752/58765 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 19749 event pairs, 390 based on Foata normal form. 1/2552 useless extension candidates. Maximal degree in co-relation 18080. Up to 846 conditions per place. [2022-01-19 13:07:47,176 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 209 selfloop transitions, 136 changer transitions 71/557 dead transitions. [2022-01-19 13:07:47,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 557 transitions, 10105 flow [2022-01-19 13:07:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 13:07:47,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 13:07:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6865 transitions. [2022-01-19 13:07:47,180 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602436323366556 [2022-01-19 13:07:47,180 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6865 transitions. [2022-01-19 13:07:47,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6865 transitions. [2022-01-19 13:07:47,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:47,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6865 transitions. [2022-01-19 13:07:47,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.65116279069767) internal successors, (6865), 43 states have internal predecessors, (6865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:47,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:47,188 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:47,188 INFO L186 Difference]: Start difference. First operand has 591 places, 413 transitions, 5899 flow. Second operand 43 states and 6865 transitions. [2022-01-19 13:07:47,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 557 transitions, 10105 flow [2022-01-19 13:07:47,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 557 transitions, 9477 flow, removed 257 selfloop flow, removed 30 redundant places. [2022-01-19 13:07:47,521 INFO L242 Difference]: Finished difference. Result has 607 places, 435 transitions, 6626 flow [2022-01-19 13:07:47,521 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5652, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=6626, PETRI_PLACES=607, PETRI_TRANSITIONS=435} [2022-01-19 13:07:47,521 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 420 predicate places. [2022-01-19 13:07:47,521 INFO L470 AbstractCegarLoop]: Abstraction has has 607 places, 435 transitions, 6626 flow [2022-01-19 13:07:47,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:47,522 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:47,522 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:47,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-01-19 13:07:47,522 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:47,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:47,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1043525350, now seen corresponding path program 142 times [2022-01-19 13:07:47,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:47,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948765556] [2022-01-19 13:07:47,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:47,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:47,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:47,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:47,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948765556] [2022-01-19 13:07:47,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948765556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:47,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:47,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:47,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480591917] [2022-01-19 13:07:47,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:47,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:47,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:47,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:47,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:47,643 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:47,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 435 transitions, 6626 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:47,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:47,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:47,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:49,084 INFO L129 PetriNetUnfolder]: 800/2722 cut-off events. [2022-01-19 13:07:49,084 INFO L130 PetriNetUnfolder]: For 69906/69919 co-relation queries the response was YES. [2022-01-19 13:07:49,131 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19872 conditions, 2722 events. 800/2722 cut-off events. For 69906/69919 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 20567 event pairs, 392 based on Foata normal form. 1/2631 useless extension candidates. Maximal degree in co-relation 19624. Up to 855 conditions per place. [2022-01-19 13:07:49,141 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 259 selfloop transitions, 110 changer transitions 70/580 dead transitions. [2022-01-19 13:07:49,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 580 transitions, 11335 flow [2022-01-19 13:07:49,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 13:07:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 13:07:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7341 transitions. [2022-01-19 13:07:49,144 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7599378881987577 [2022-01-19 13:07:49,144 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7341 transitions. [2022-01-19 13:07:49,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7341 transitions. [2022-01-19 13:07:49,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:49,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7341 transitions. [2022-01-19 13:07:49,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.58695652173913) internal successors, (7341), 46 states have internal predecessors, (7341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:49,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:49,153 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:49,153 INFO L186 Difference]: Start difference. First operand has 607 places, 435 transitions, 6626 flow. Second operand 46 states and 7341 transitions. [2022-01-19 13:07:49,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 580 transitions, 11335 flow [2022-01-19 13:07:49,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 580 transitions, 10632 flow, removed 247 selfloop flow, removed 24 redundant places. [2022-01-19 13:07:49,540 INFO L242 Difference]: Finished difference. Result has 631 places, 454 transitions, 7128 flow [2022-01-19 13:07:49,540 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6317, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=7128, PETRI_PLACES=631, PETRI_TRANSITIONS=454} [2022-01-19 13:07:49,540 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 444 predicate places. [2022-01-19 13:07:49,540 INFO L470 AbstractCegarLoop]: Abstraction has has 631 places, 454 transitions, 7128 flow [2022-01-19 13:07:49,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:49,541 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:49,541 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:49,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-01-19 13:07:49,541 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:49,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:49,541 INFO L85 PathProgramCache]: Analyzing trace with hash 837093764, now seen corresponding path program 143 times [2022-01-19 13:07:49,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:49,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300545083] [2022-01-19 13:07:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:49,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:49,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:49,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300545083] [2022-01-19 13:07:49,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300545083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:49,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:49,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:49,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240511102] [2022-01-19 13:07:49,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:49,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:49,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:49,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:49,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:49,657 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:49,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 454 transitions, 7128 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:49,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:49,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:49,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:51,106 INFO L129 PetriNetUnfolder]: 837/2810 cut-off events. [2022-01-19 13:07:51,106 INFO L130 PetriNetUnfolder]: For 84166/84179 co-relation queries the response was YES. [2022-01-19 13:07:51,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21550 conditions, 2810 events. 837/2810 cut-off events. For 84166/84179 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21264 event pairs, 425 based on Foata normal form. 1/2718 useless extension candidates. Maximal degree in co-relation 21290. Up to 865 conditions per place. [2022-01-19 13:07:51,169 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 117 changer transitions 71/603 dead transitions. [2022-01-19 13:07:51,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 603 transitions, 12182 flow [2022-01-19 13:07:51,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 13:07:51,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 13:07:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7032 transitions. [2022-01-19 13:07:51,172 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610389610389611 [2022-01-19 13:07:51,172 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7032 transitions. [2022-01-19 13:07:51,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7032 transitions. [2022-01-19 13:07:51,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:51,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7032 transitions. [2022-01-19 13:07:51,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.8181818181818) internal successors, (7032), 44 states have internal predecessors, (7032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:51,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:51,181 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:51,181 INFO L186 Difference]: Start difference. First operand has 631 places, 454 transitions, 7128 flow. Second operand 44 states and 7032 transitions. [2022-01-19 13:07:51,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 603 transitions, 12182 flow [2022-01-19 13:07:51,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 603 transitions, 11483 flow, removed 300 selfloop flow, removed 30 redundant places. [2022-01-19 13:07:51,608 INFO L242 Difference]: Finished difference. Result has 647 places, 476 transitions, 7857 flow [2022-01-19 13:07:51,608 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6889, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=7857, PETRI_PLACES=647, PETRI_TRANSITIONS=476} [2022-01-19 13:07:51,609 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 460 predicate places. [2022-01-19 13:07:51,609 INFO L470 AbstractCegarLoop]: Abstraction has has 647 places, 476 transitions, 7857 flow [2022-01-19 13:07:51,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:51,609 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:51,609 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:51,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-01-19 13:07:51,609 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:51,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:51,610 INFO L85 PathProgramCache]: Analyzing trace with hash -605808158, now seen corresponding path program 144 times [2022-01-19 13:07:51,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:51,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15944124] [2022-01-19 13:07:51,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:51,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:51,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:51,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:51,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15944124] [2022-01-19 13:07:51,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15944124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:51,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:51,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:51,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845254532] [2022-01-19 13:07:51,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:51,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:51,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:51,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:51,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:51,745 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:51,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 476 transitions, 7857 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:51,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:51,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:51,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:53,296 INFO L129 PetriNetUnfolder]: 831/2794 cut-off events. [2022-01-19 13:07:53,297 INFO L130 PetriNetUnfolder]: For 88970/88983 co-relation queries the response was YES. [2022-01-19 13:07:53,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21709 conditions, 2794 events. 831/2794 cut-off events. For 88970/88983 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21158 event pairs, 399 based on Foata normal form. 1/2703 useless extension candidates. Maximal degree in co-relation 21441. Up to 863 conditions per place. [2022-01-19 13:07:53,357 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 278 selfloop transitions, 118 changer transitions 72/609 dead transitions. [2022-01-19 13:07:53,358 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 660 places, 609 transitions, 12719 flow [2022-01-19 13:07:53,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 13:07:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 13:07:53,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7187 transitions. [2022-01-19 13:07:53,361 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7605291005291005 [2022-01-19 13:07:53,361 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7187 transitions. [2022-01-19 13:07:53,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7187 transitions. [2022-01-19 13:07:53,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:53,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7187 transitions. [2022-01-19 13:07:53,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.7111111111111) internal successors, (7187), 45 states have internal predecessors, (7187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:53,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:53,370 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:53,370 INFO L186 Difference]: Start difference. First operand has 647 places, 476 transitions, 7857 flow. Second operand 45 states and 7187 transitions. [2022-01-19 13:07:53,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 660 places, 609 transitions, 12719 flow [2022-01-19 13:07:53,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 609 transitions, 11903 flow, removed 343 selfloop flow, removed 30 redundant places. [2022-01-19 13:07:53,853 INFO L242 Difference]: Finished difference. Result has 663 places, 483 transitions, 8130 flow [2022-01-19 13:07:53,853 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7581, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=8130, PETRI_PLACES=663, PETRI_TRANSITIONS=483} [2022-01-19 13:07:53,854 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 476 predicate places. [2022-01-19 13:07:53,854 INFO L470 AbstractCegarLoop]: Abstraction has has 663 places, 483 transitions, 8130 flow [2022-01-19 13:07:53,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:53,854 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:53,854 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:53,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-01-19 13:07:53,854 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:53,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:53,855 INFO L85 PathProgramCache]: Analyzing trace with hash -109358202, now seen corresponding path program 145 times [2022-01-19 13:07:53,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:53,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230784955] [2022-01-19 13:07:53,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:53,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:53,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:53,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:53,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230784955] [2022-01-19 13:07:53,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230784955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:53,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:53,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:53,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509368812] [2022-01-19 13:07:53,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:53,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:53,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:53,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:53,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:53,958 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:53,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 483 transitions, 8130 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:53,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:53,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:53,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:55,247 INFO L129 PetriNetUnfolder]: 820/2770 cut-off events. [2022-01-19 13:07:55,247 INFO L130 PetriNetUnfolder]: For 90131/90144 co-relation queries the response was YES. [2022-01-19 13:07:55,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21082 conditions, 2770 events. 820/2770 cut-off events. For 90131/90144 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 21016 event pairs, 302 based on Foata normal form. 1/2687 useless extension candidates. Maximal degree in co-relation 20808. Up to 861 conditions per place. [2022-01-19 13:07:55,310 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 264 selfloop transitions, 151 changer transitions 67/623 dead transitions. [2022-01-19 13:07:55,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 623 transitions, 11826 flow [2022-01-19 13:07:55,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:07:55,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:07:55,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6068 transitions. [2022-01-19 13:07:55,313 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604010025062656 [2022-01-19 13:07:55,313 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6068 transitions. [2022-01-19 13:07:55,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6068 transitions. [2022-01-19 13:07:55,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:55,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6068 transitions. [2022-01-19 13:07:55,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.68421052631578) internal successors, (6068), 38 states have internal predecessors, (6068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:55,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:55,320 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:55,320 INFO L186 Difference]: Start difference. First operand has 663 places, 483 transitions, 8130 flow. Second operand 38 states and 6068 transitions. [2022-01-19 13:07:55,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 623 transitions, 11826 flow [2022-01-19 13:07:55,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 623 transitions, 11227 flow, removed 226 selfloop flow, removed 30 redundant places. [2022-01-19 13:07:55,798 INFO L242 Difference]: Finished difference. Result has 660 places, 487 transitions, 8323 flow [2022-01-19 13:07:55,798 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7834, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8323, PETRI_PLACES=660, PETRI_TRANSITIONS=487} [2022-01-19 13:07:55,798 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 473 predicate places. [2022-01-19 13:07:55,798 INFO L470 AbstractCegarLoop]: Abstraction has has 660 places, 487 transitions, 8323 flow [2022-01-19 13:07:55,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:55,799 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:55,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:55,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-01-19 13:07:55,799 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:55,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:55,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1444901534, now seen corresponding path program 146 times [2022-01-19 13:07:55,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:55,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080819083] [2022-01-19 13:07:55,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:55,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:55,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:55,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080819083] [2022-01-19 13:07:55,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080819083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:55,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:55,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:55,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451380433] [2022-01-19 13:07:55,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:55,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:55,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:55,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:55,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:55,933 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:55,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 487 transitions, 8323 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:55,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:55,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:55,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:57,288 INFO L129 PetriNetUnfolder]: 838/2831 cut-off events. [2022-01-19 13:07:57,288 INFO L130 PetriNetUnfolder]: For 96350/96363 co-relation queries the response was YES. [2022-01-19 13:07:57,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22062 conditions, 2831 events. 838/2831 cut-off events. For 96350/96363 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 21683 event pairs, 339 based on Foata normal form. 1/2744 useless extension candidates. Maximal degree in co-relation 21794. Up to 867 conditions per place. [2022-01-19 13:07:57,357 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 286 selfloop transitions, 141 changer transitions 66/634 dead transitions. [2022-01-19 13:07:57,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 634 transitions, 12707 flow [2022-01-19 13:07:57,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:07:57,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:07:57,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5917 transitions. [2022-01-19 13:07:57,360 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615186615186615 [2022-01-19 13:07:57,360 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5917 transitions. [2022-01-19 13:07:57,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5917 transitions. [2022-01-19 13:07:57,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:57,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5917 transitions. [2022-01-19 13:07:57,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.9189189189189) internal successors, (5917), 37 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:57,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:57,368 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:57,368 INFO L186 Difference]: Start difference. First operand has 660 places, 487 transitions, 8323 flow. Second operand 37 states and 5917 transitions. [2022-01-19 13:07:57,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 634 transitions, 12707 flow [2022-01-19 13:07:57,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 634 transitions, 12168 flow, removed 192 selfloop flow, removed 25 redundant places. [2022-01-19 13:07:57,872 INFO L242 Difference]: Finished difference. Result has 670 places, 508 transitions, 9164 flow [2022-01-19 13:07:57,872 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8078, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9164, PETRI_PLACES=670, PETRI_TRANSITIONS=508} [2022-01-19 13:07:57,872 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 483 predicate places. [2022-01-19 13:07:57,873 INFO L470 AbstractCegarLoop]: Abstraction has has 670 places, 508 transitions, 9164 flow [2022-01-19 13:07:57,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:57,873 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:07:57,873 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:07:57,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-01-19 13:07:57,873 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:07:57,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:07:57,873 INFO L85 PathProgramCache]: Analyzing trace with hash 125277454, now seen corresponding path program 147 times [2022-01-19 13:07:57,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:07:57,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314870024] [2022-01-19 13:07:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:07:57,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:07:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:07:57,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:07:57,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:07:57,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314870024] [2022-01-19 13:07:57,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314870024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:07:57,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:07:57,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:07:57,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523851710] [2022-01-19 13:07:57,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:07:57,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:07:57,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:07:57,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:07:57,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:07:57,978 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:07:57,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 508 transitions, 9164 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:57,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:07:57,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:07:57,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:07:59,325 INFO L129 PetriNetUnfolder]: 833/2828 cut-off events. [2022-01-19 13:07:59,325 INFO L130 PetriNetUnfolder]: For 98272/98285 co-relation queries the response was YES. [2022-01-19 13:07:59,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22333 conditions, 2828 events. 833/2828 cut-off events. For 98272/98285 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 21753 event pairs, 333 based on Foata normal form. 1/2740 useless extension candidates. Maximal degree in co-relation 22061. Up to 865 conditions per place. [2022-01-19 13:07:59,389 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 300 selfloop transitions, 138 changer transitions 65/644 dead transitions. [2022-01-19 13:07:59,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 644 transitions, 13346 flow [2022-01-19 13:07:59,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:07:59,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:07:59,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-01-19 13:07:59,392 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-01-19 13:07:59,392 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-01-19 13:07:59,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-01-19 13:07:59,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:07:59,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-01-19 13:07:59,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:59,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:59,399 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:07:59,399 INFO L186 Difference]: Start difference. First operand has 670 places, 508 transitions, 9164 flow. Second operand 38 states and 6077 transitions. [2022-01-19 13:07:59,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 644 transitions, 13346 flow [2022-01-19 13:08:00,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 644 transitions, 12489 flow, removed 397 selfloop flow, removed 20 redundant places. [2022-01-19 13:08:00,031 INFO L242 Difference]: Finished difference. Result has 687 places, 516 transitions, 9316 flow [2022-01-19 13:08:00,031 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8761, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9316, PETRI_PLACES=687, PETRI_TRANSITIONS=516} [2022-01-19 13:08:00,031 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 500 predicate places. [2022-01-19 13:08:00,031 INFO L470 AbstractCegarLoop]: Abstraction has has 687 places, 516 transitions, 9316 flow [2022-01-19 13:08:00,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:00,031 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:00,032 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:00,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-01-19 13:08:00,032 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:00,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:00,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2123983226, now seen corresponding path program 148 times [2022-01-19 13:08:00,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:00,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196299158] [2022-01-19 13:08:00,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:00,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:00,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:00,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196299158] [2022-01-19 13:08:00,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196299158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:00,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:00,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:00,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407860256] [2022-01-19 13:08:00,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:00,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:00,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:00,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:00,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:00,166 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:00,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 516 transitions, 9316 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:00,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:00,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:00,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:01,718 INFO L129 PetriNetUnfolder]: 828/2824 cut-off events. [2022-01-19 13:08:01,719 INFO L130 PetriNetUnfolder]: For 92967/92980 co-relation queries the response was YES. [2022-01-19 13:08:01,775 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21934 conditions, 2824 events. 828/2824 cut-off events. For 92967/92980 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21784 event pairs, 330 based on Foata normal form. 1/2738 useless extension candidates. Maximal degree in co-relation 21658. Up to 863 conditions per place. [2022-01-19 13:08:01,786 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 302 selfloop transitions, 134 changer transitions 66/643 dead transitions. [2022-01-19 13:08:01,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 700 places, 643 transitions, 13040 flow [2022-01-19 13:08:01,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:08:01,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:08:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6076 transitions. [2022-01-19 13:08:01,789 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7614035087719299 [2022-01-19 13:08:01,790 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6076 transitions. [2022-01-19 13:08:01,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6076 transitions. [2022-01-19 13:08:01,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:01,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6076 transitions. [2022-01-19 13:08:01,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.89473684210526) internal successors, (6076), 38 states have internal predecessors, (6076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:01,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:01,797 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:01,797 INFO L186 Difference]: Start difference. First operand has 687 places, 516 transitions, 9316 flow. Second operand 38 states and 6076 transitions. [2022-01-19 13:08:01,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 700 places, 643 transitions, 13040 flow [2022-01-19 13:08:02,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 643 transitions, 12533 flow, removed 169 selfloop flow, removed 23 redundant places. [2022-01-19 13:08:02,360 INFO L242 Difference]: Finished difference. Result has 699 places, 519 transitions, 9454 flow [2022-01-19 13:08:02,360 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9034, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9454, PETRI_PLACES=699, PETRI_TRANSITIONS=519} [2022-01-19 13:08:02,360 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 512 predicate places. [2022-01-19 13:08:02,360 INFO L470 AbstractCegarLoop]: Abstraction has has 699 places, 519 transitions, 9454 flow [2022-01-19 13:08:02,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:02,361 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:02,361 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:02,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-01-19 13:08:02,361 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:02,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:02,361 INFO L85 PathProgramCache]: Analyzing trace with hash 974199346, now seen corresponding path program 149 times [2022-01-19 13:08:02,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:02,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800104090] [2022-01-19 13:08:02,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:02,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:02,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:02,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:02,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800104090] [2022-01-19 13:08:02,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800104090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:02,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:02,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:02,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069185432] [2022-01-19 13:08:02,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:02,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:02,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:02,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:02,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:02,483 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:02,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 699 places, 519 transitions, 9454 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:02,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:02,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:02,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:03,903 INFO L129 PetriNetUnfolder]: 859/2890 cut-off events. [2022-01-19 13:08:03,903 INFO L130 PetriNetUnfolder]: For 96266/96279 co-relation queries the response was YES. [2022-01-19 13:08:03,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23061 conditions, 2890 events. 859/2890 cut-off events. For 96266/96279 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 22205 event pairs, 390 based on Foata normal form. 1/2797 useless extension candidates. Maximal degree in co-relation 22782. Up to 869 conditions per place. [2022-01-19 13:08:03,972 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 284 selfloop transitions, 171 changer transitions 66/662 dead transitions. [2022-01-19 13:08:03,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 662 transitions, 14094 flow [2022-01-19 13:08:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:08:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:08:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5761 transitions. [2022-01-19 13:08:03,975 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620370370370371 [2022-01-19 13:08:03,976 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5761 transitions. [2022-01-19 13:08:03,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5761 transitions. [2022-01-19 13:08:03,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:03,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5761 transitions. [2022-01-19 13:08:03,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.02777777777777) internal successors, (5761), 36 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:03,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:03,983 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:03,983 INFO L186 Difference]: Start difference. First operand has 699 places, 519 transitions, 9454 flow. Second operand 36 states and 5761 transitions. [2022-01-19 13:08:03,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 662 transitions, 14094 flow [2022-01-19 13:08:04,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 685 places, 662 transitions, 13640 flow, removed 156 selfloop flow, removed 25 redundant places. [2022-01-19 13:08:04,591 INFO L242 Difference]: Finished difference. Result has 711 places, 542 transitions, 10482 flow [2022-01-19 13:08:04,592 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9229, PETRI_DIFFERENCE_MINUEND_PLACES=650, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=10482, PETRI_PLACES=711, PETRI_TRANSITIONS=542} [2022-01-19 13:08:04,592 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 524 predicate places. [2022-01-19 13:08:04,592 INFO L470 AbstractCegarLoop]: Abstraction has has 711 places, 542 transitions, 10482 flow [2022-01-19 13:08:04,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:04,592 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:04,592 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:04,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-01-19 13:08:04,593 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:04,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:04,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1980016676, now seen corresponding path program 150 times [2022-01-19 13:08:04,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:04,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819548369] [2022-01-19 13:08:04,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:04,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:04,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:04,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:04,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819548369] [2022-01-19 13:08:04,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819548369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:04,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:04,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:04,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109937286] [2022-01-19 13:08:04,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:04,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:04,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:04,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:04,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:04,740 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:04,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 542 transitions, 10482 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:04,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:04,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:04,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:06,253 INFO L129 PetriNetUnfolder]: 851/2884 cut-off events. [2022-01-19 13:08:06,253 INFO L130 PetriNetUnfolder]: For 102839/102852 co-relation queries the response was YES. [2022-01-19 13:08:06,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23495 conditions, 2884 events. 851/2884 cut-off events. For 102839/102852 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 22231 event pairs, 369 based on Foata normal form. 1/2794 useless extension candidates. Maximal degree in co-relation 23209. Up to 867 conditions per place. [2022-01-19 13:08:06,322 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 327 selfloop transitions, 136 changer transitions 64/668 dead transitions. [2022-01-19 13:08:06,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 668 transitions, 14830 flow [2022-01-19 13:08:06,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:08:06,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:08:06,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6080 transitions. [2022-01-19 13:08:06,325 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 13:08:06,325 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6080 transitions. [2022-01-19 13:08:06,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6080 transitions. [2022-01-19 13:08:06,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:06,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6080 transitions. [2022-01-19 13:08:06,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.0) internal successors, (6080), 38 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:06,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:06,333 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:06,333 INFO L186 Difference]: Start difference. First operand has 711 places, 542 transitions, 10482 flow. Second operand 38 states and 6080 transitions. [2022-01-19 13:08:06,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 668 transitions, 14830 flow [2022-01-19 13:08:06,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 706 places, 668 transitions, 14123 flow, removed 276 selfloop flow, removed 20 redundant places. [2022-01-19 13:08:06,992 INFO L242 Difference]: Finished difference. Result has 729 places, 551 transitions, 10739 flow [2022-01-19 13:08:06,993 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10136, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10739, PETRI_PLACES=729, PETRI_TRANSITIONS=551} [2022-01-19 13:08:06,993 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 542 predicate places. [2022-01-19 13:08:06,993 INFO L470 AbstractCegarLoop]: Abstraction has has 729 places, 551 transitions, 10739 flow [2022-01-19 13:08:06,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:06,994 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:06,994 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:06,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-01-19 13:08:06,994 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:06,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:06,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1143510414, now seen corresponding path program 151 times [2022-01-19 13:08:06,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:06,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108384903] [2022-01-19 13:08:06,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:06,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:07,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:07,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108384903] [2022-01-19 13:08:07,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108384903] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:07,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:07,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:07,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196206542] [2022-01-19 13:08:07,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:07,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:07,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:07,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:07,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:07,121 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:07,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 729 places, 551 transitions, 10739 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:07,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:07,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:07,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:08,742 INFO L129 PetriNetUnfolder]: 874/2944 cut-off events. [2022-01-19 13:08:08,742 INFO L130 PetriNetUnfolder]: For 110483/110496 co-relation queries the response was YES. [2022-01-19 13:08:08,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24495 conditions, 2944 events. 874/2944 cut-off events. For 110483/110496 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22806 event pairs, 385 based on Foata normal form. 1/2851 useless extension candidates. Maximal degree in co-relation 24203. Up to 873 conditions per place. [2022-01-19 13:08:08,808 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 338 selfloop transitions, 144 changer transitions 64/687 dead transitions. [2022-01-19 13:08:08,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 741 places, 687 transitions, 15474 flow [2022-01-19 13:08:08,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:08:08,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:08:08,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5926 transitions. [2022-01-19 13:08:08,811 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626769626769627 [2022-01-19 13:08:08,811 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5926 transitions. [2022-01-19 13:08:08,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5926 transitions. [2022-01-19 13:08:08,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:08,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5926 transitions. [2022-01-19 13:08:08,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.16216216216216) internal successors, (5926), 37 states have internal predecessors, (5926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:08,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:08,819 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:08,819 INFO L186 Difference]: Start difference. First operand has 729 places, 551 transitions, 10739 flow. Second operand 37 states and 5926 transitions. [2022-01-19 13:08:08,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 741 places, 687 transitions, 15474 flow [2022-01-19 13:08:09,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 720 places, 687 transitions, 14883 flow, removed 229 selfloop flow, removed 21 redundant places. [2022-01-19 13:08:09,519 INFO L242 Difference]: Finished difference. Result has 745 places, 570 transitions, 11430 flow [2022-01-19 13:08:09,520 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10456, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=11430, PETRI_PLACES=745, PETRI_TRANSITIONS=570} [2022-01-19 13:08:09,520 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 558 predicate places. [2022-01-19 13:08:09,520 INFO L470 AbstractCegarLoop]: Abstraction has has 745 places, 570 transitions, 11430 flow [2022-01-19 13:08:09,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:09,520 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:09,520 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:09,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-01-19 13:08:09,520 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:09,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:09,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1315170484, now seen corresponding path program 152 times [2022-01-19 13:08:09,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:09,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670427786] [2022-01-19 13:08:09,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:09,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:09,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:09,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:09,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670427786] [2022-01-19 13:08:09,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670427786] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:09,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:09,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:09,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298634796] [2022-01-19 13:08:09,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:09,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:09,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:09,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:09,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:09,630 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:09,631 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 745 places, 570 transitions, 11430 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:09,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:09,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:09,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:11,210 INFO L129 PetriNetUnfolder]: 897/3010 cut-off events. [2022-01-19 13:08:11,210 INFO L130 PetriNetUnfolder]: For 120801/120814 co-relation queries the response was YES. [2022-01-19 13:08:11,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25722 conditions, 3010 events. 897/3010 cut-off events. For 120801/120814 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23381 event pairs, 404 based on Foata normal form. 1/2916 useless extension candidates. Maximal degree in co-relation 25423. Up to 879 conditions per place. [2022-01-19 13:08:11,284 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 336 selfloop transitions, 162 changer transitions 64/703 dead transitions. [2022-01-19 13:08:11,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 758 places, 703 transitions, 16223 flow [2022-01-19 13:08:11,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:08:11,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:08:11,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5924 transitions. [2022-01-19 13:08:11,287 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624195624195624 [2022-01-19 13:08:11,287 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5924 transitions. [2022-01-19 13:08:11,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5924 transitions. [2022-01-19 13:08:11,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:11,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5924 transitions. [2022-01-19 13:08:11,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1081081081081) internal successors, (5924), 37 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:11,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:11,294 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:11,294 INFO L186 Difference]: Start difference. First operand has 745 places, 570 transitions, 11430 flow. Second operand 37 states and 5924 transitions. [2022-01-19 13:08:11,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 758 places, 703 transitions, 16223 flow [2022-01-19 13:08:12,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 703 transitions, 15704 flow, removed 192 selfloop flow, removed 21 redundant places. [2022-01-19 13:08:12,046 INFO L242 Difference]: Finished difference. Result has 762 places, 587 transitions, 12150 flow [2022-01-19 13:08:12,046 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11162, PETRI_DIFFERENCE_MINUEND_PLACES=701, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=12150, PETRI_PLACES=762, PETRI_TRANSITIONS=587} [2022-01-19 13:08:12,046 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 575 predicate places. [2022-01-19 13:08:12,047 INFO L470 AbstractCegarLoop]: Abstraction has has 762 places, 587 transitions, 12150 flow [2022-01-19 13:08:12,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:12,047 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:12,047 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:12,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-01-19 13:08:12,047 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:12,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:12,047 INFO L85 PathProgramCache]: Analyzing trace with hash 404415070, now seen corresponding path program 153 times [2022-01-19 13:08:12,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:12,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735264883] [2022-01-19 13:08:12,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:12,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:12,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:12,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735264883] [2022-01-19 13:08:12,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735264883] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:12,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:12,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:12,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061767767] [2022-01-19 13:08:12,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:12,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:12,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:12,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:12,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:12,183 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:12,184 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 762 places, 587 transitions, 12150 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:12,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:12,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:12,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:13,755 INFO L129 PetriNetUnfolder]: 892/3014 cut-off events. [2022-01-19 13:08:13,755 INFO L130 PetriNetUnfolder]: For 123816/123829 co-relation queries the response was YES. [2022-01-19 13:08:13,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26051 conditions, 3014 events. 892/3014 cut-off events. For 123816/123829 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23590 event pairs, 397 based on Foata normal form. 1/2920 useless extension candidates. Maximal degree in co-relation 25745. Up to 877 conditions per place. [2022-01-19 13:08:13,832 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 339 selfloop transitions, 164 changer transitions 64/708 dead transitions. [2022-01-19 13:08:13,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 776 places, 708 transitions, 16683 flow [2022-01-19 13:08:13,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:08:13,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:08:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6078 transitions. [2022-01-19 13:08:13,835 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616541353383459 [2022-01-19 13:08:13,835 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6078 transitions. [2022-01-19 13:08:13,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6078 transitions. [2022-01-19 13:08:13,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:13,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6078 transitions. [2022-01-19 13:08:13,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.94736842105263) internal successors, (6078), 38 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:13,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:13,843 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:13,843 INFO L186 Difference]: Start difference. First operand has 762 places, 587 transitions, 12150 flow. Second operand 38 states and 6078 transitions. [2022-01-19 13:08:13,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 776 places, 708 transitions, 16683 flow [2022-01-19 13:08:14,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 756 places, 708 transitions, 16097 flow, removed 213 selfloop flow, removed 20 redundant places. [2022-01-19 13:08:14,681 INFO L242 Difference]: Finished difference. Result has 780 places, 593 transitions, 12424 flow [2022-01-19 13:08:14,682 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11845, PETRI_DIFFERENCE_MINUEND_PLACES=719, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=12424, PETRI_PLACES=780, PETRI_TRANSITIONS=593} [2022-01-19 13:08:14,682 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 593 predicate places. [2022-01-19 13:08:14,682 INFO L470 AbstractCegarLoop]: Abstraction has has 780 places, 593 transitions, 12424 flow [2022-01-19 13:08:14,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:14,682 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:14,683 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:14,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-01-19 13:08:14,683 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:14,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:14,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1411516600, now seen corresponding path program 154 times [2022-01-19 13:08:14,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:14,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814802387] [2022-01-19 13:08:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:14,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:14,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:14,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814802387] [2022-01-19 13:08:14,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814802387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:14,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:14,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:14,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404778624] [2022-01-19 13:08:14,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:14,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:14,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:14,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:14,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:14,800 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:14,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 593 transitions, 12424 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:14,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:14,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:14,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:16,290 INFO L129 PetriNetUnfolder]: 882/2996 cut-off events. [2022-01-19 13:08:16,290 INFO L130 PetriNetUnfolder]: For 133663/133676 co-relation queries the response was YES. [2022-01-19 13:08:16,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25883 conditions, 2996 events. 882/2996 cut-off events. For 133663/133676 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23509 event pairs, 392 based on Foata normal form. 1/2902 useless extension candidates. Maximal degree in co-relation 25570. Up to 875 conditions per place. [2022-01-19 13:08:16,365 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 368 selfloop transitions, 145 changer transitions 64/718 dead transitions. [2022-01-19 13:08:16,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 793 places, 718 transitions, 17179 flow [2022-01-19 13:08:16,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:08:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:08:16,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6086 transitions. [2022-01-19 13:08:16,368 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76265664160401 [2022-01-19 13:08:16,368 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6086 transitions. [2022-01-19 13:08:16,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6086 transitions. [2022-01-19 13:08:16,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:16,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6086 transitions. [2022-01-19 13:08:16,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.1578947368421) internal successors, (6086), 38 states have internal predecessors, (6086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:16,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:16,375 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:16,375 INFO L186 Difference]: Start difference. First operand has 780 places, 593 transitions, 12424 flow. Second operand 38 states and 6086 transitions. [2022-01-19 13:08:16,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 793 places, 718 transitions, 17179 flow [2022-01-19 13:08:17,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 771 places, 718 transitions, 16576 flow, removed 210 selfloop flow, removed 22 redundant places. [2022-01-19 13:08:17,217 INFO L242 Difference]: Finished difference. Result has 795 places, 599 transitions, 12632 flow [2022-01-19 13:08:17,217 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12088, PETRI_DIFFERENCE_MINUEND_PLACES=734, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=12632, PETRI_PLACES=795, PETRI_TRANSITIONS=599} [2022-01-19 13:08:17,217 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 608 predicate places. [2022-01-19 13:08:17,217 INFO L470 AbstractCegarLoop]: Abstraction has has 795 places, 599 transitions, 12632 flow [2022-01-19 13:08:17,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:17,217 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:17,218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:17,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-01-19 13:08:17,218 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:17,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash 856655376, now seen corresponding path program 155 times [2022-01-19 13:08:17,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:17,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132943386] [2022-01-19 13:08:17,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:17,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:17,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:17,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132943386] [2022-01-19 13:08:17,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132943386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:17,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:17,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:17,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163652587] [2022-01-19 13:08:17,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:17,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:17,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:17,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:17,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:17,339 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:17,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 795 places, 599 transitions, 12632 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:17,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:17,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:17,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:18,903 INFO L129 PetriNetUnfolder]: 906/3055 cut-off events. [2022-01-19 13:08:18,903 INFO L130 PetriNetUnfolder]: For 138103/138116 co-relation queries the response was YES. [2022-01-19 13:08:18,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27063 conditions, 3055 events. 906/3055 cut-off events. For 138103/138116 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 24001 event pairs, 408 based on Foata normal form. 1/2957 useless extension candidates. Maximal degree in co-relation 26745. Up to 889 conditions per place. [2022-01-19 13:08:18,981 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 382 selfloop transitions, 135 changer transitions 63/721 dead transitions. [2022-01-19 13:08:18,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 807 places, 721 transitions, 17603 flow [2022-01-19 13:08:18,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:08:18,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:08:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5927 transitions. [2022-01-19 13:08:18,984 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628056628056628 [2022-01-19 13:08:18,984 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5927 transitions. [2022-01-19 13:08:18,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5927 transitions. [2022-01-19 13:08:18,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:18,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5927 transitions. [2022-01-19 13:08:18,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1891891891892) internal successors, (5927), 37 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:18,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:18,992 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:18,992 INFO L186 Difference]: Start difference. First operand has 795 places, 599 transitions, 12632 flow. Second operand 37 states and 5927 transitions. [2022-01-19 13:08:18,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 807 places, 721 transitions, 17603 flow [2022-01-19 13:08:19,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 783 places, 721 transitions, 17023 flow, removed 212 selfloop flow, removed 24 redundant places. [2022-01-19 13:08:19,970 INFO L242 Difference]: Finished difference. Result has 808 places, 618 transitions, 13321 flow [2022-01-19 13:08:19,970 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12315, PETRI_DIFFERENCE_MINUEND_PLACES=747, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=13321, PETRI_PLACES=808, PETRI_TRANSITIONS=618} [2022-01-19 13:08:19,970 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 621 predicate places. [2022-01-19 13:08:19,971 INFO L470 AbstractCegarLoop]: Abstraction has has 808 places, 618 transitions, 13321 flow [2022-01-19 13:08:19,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:19,971 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:19,971 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:19,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-01-19 13:08:19,971 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:19,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:19,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1068205640, now seen corresponding path program 156 times [2022-01-19 13:08:19,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:19,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097542558] [2022-01-19 13:08:19,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:19,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:20,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:20,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:20,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097542558] [2022-01-19 13:08:20,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097542558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:20,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:20,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:20,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062969846] [2022-01-19 13:08:20,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:20,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:20,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:20,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:20,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:20,080 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:20,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 618 transitions, 13321 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:20,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:20,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:20,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:21,668 INFO L129 PetriNetUnfolder]: 939/3141 cut-off events. [2022-01-19 13:08:21,669 INFO L130 PetriNetUnfolder]: For 144552/144565 co-relation queries the response was YES. [2022-01-19 13:08:21,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28621 conditions, 3141 events. 939/3141 cut-off events. For 144552/144565 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 24791 event pairs, 443 based on Foata normal form. 1/3041 useless extension candidates. Maximal degree in co-relation 28299. Up to 900 conditions per place. [2022-01-19 13:08:21,750 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 285 selfloop transitions, 255 changer transitions 65/746 dead transitions. [2022-01-19 13:08:21,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 819 places, 746 transitions, 18554 flow [2022-01-19 13:08:21,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:08:21,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:08:21,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5605 transitions. [2022-01-19 13:08:21,753 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625850340136054 [2022-01-19 13:08:21,753 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5605 transitions. [2022-01-19 13:08:21,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5605 transitions. [2022-01-19 13:08:21,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:21,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5605 transitions. [2022-01-19 13:08:21,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.14285714285714) internal successors, (5605), 35 states have internal predecessors, (5605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:21,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:21,762 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:21,762 INFO L186 Difference]: Start difference. First operand has 808 places, 618 transitions, 13321 flow. Second operand 35 states and 5605 transitions. [2022-01-19 13:08:21,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 819 places, 746 transitions, 18554 flow [2022-01-19 13:08:22,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 798 places, 746 transitions, 17950 flow, removed 226 selfloop flow, removed 21 redundant places. [2022-01-19 13:08:22,858 INFO L242 Difference]: Finished difference. Result has 824 places, 637 transitions, 14324 flow [2022-01-19 13:08:22,858 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12977, PETRI_DIFFERENCE_MINUEND_PLACES=764, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=14324, PETRI_PLACES=824, PETRI_TRANSITIONS=637} [2022-01-19 13:08:22,858 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 637 predicate places. [2022-01-19 13:08:22,858 INFO L470 AbstractCegarLoop]: Abstraction has has 824 places, 637 transitions, 14324 flow [2022-01-19 13:08:22,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:22,859 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:22,859 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:22,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-01-19 13:08:22,859 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:22,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:22,859 INFO L85 PathProgramCache]: Analyzing trace with hash -116814954, now seen corresponding path program 157 times [2022-01-19 13:08:22,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:22,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602939849] [2022-01-19 13:08:22,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:22,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:23,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:23,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:23,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602939849] [2022-01-19 13:08:23,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602939849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:23,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:23,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:23,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968698123] [2022-01-19 13:08:23,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:23,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:23,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:23,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:23,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:23,004 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:23,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 637 transitions, 14324 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:23,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:23,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:23,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:24,716 INFO L129 PetriNetUnfolder]: 958/3200 cut-off events. [2022-01-19 13:08:24,717 INFO L130 PetriNetUnfolder]: For 161054/161067 co-relation queries the response was YES. [2022-01-19 13:08:24,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29887 conditions, 3200 events. 958/3200 cut-off events. For 161054/161067 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 25398 event pairs, 447 based on Foata normal form. 1/3102 useless extension candidates. Maximal degree in co-relation 29557. Up to 905 conditions per place. [2022-01-19 13:08:24,801 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 359 selfloop transitions, 193 changer transitions 61/754 dead transitions. [2022-01-19 13:08:24,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 840 places, 754 transitions, 19439 flow [2022-01-19 13:08:24,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:08:24,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:08:24,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-01-19 13:08:24,804 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-01-19 13:08:24,804 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-01-19 13:08:24,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-01-19 13:08:24,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:24,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-01-19 13:08:24,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:24,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:24,811 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:24,811 INFO L186 Difference]: Start difference. First operand has 824 places, 637 transitions, 14324 flow. Second operand 38 states and 6079 transitions. [2022-01-19 13:08:24,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 840 places, 754 transitions, 19439 flow [2022-01-19 13:08:26,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 818 places, 754 transitions, 18600 flow, removed 197 selfloop flow, removed 22 redundant places. [2022-01-19 13:08:26,050 INFO L242 Difference]: Finished difference. Result has 843 places, 652 transitions, 14774 flow [2022-01-19 13:08:26,050 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13760, PETRI_DIFFERENCE_MINUEND_PLACES=781, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14774, PETRI_PLACES=843, PETRI_TRANSITIONS=652} [2022-01-19 13:08:26,050 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 656 predicate places. [2022-01-19 13:08:26,050 INFO L470 AbstractCegarLoop]: Abstraction has has 843 places, 652 transitions, 14774 flow [2022-01-19 13:08:26,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:26,051 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:26,051 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:26,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-01-19 13:08:26,051 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:26,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:26,051 INFO L85 PathProgramCache]: Analyzing trace with hash 83784014, now seen corresponding path program 158 times [2022-01-19 13:08:26,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:26,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550605750] [2022-01-19 13:08:26,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:26,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:26,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:26,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:26,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550605750] [2022-01-19 13:08:26,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550605750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:26,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:26,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:26,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78017955] [2022-01-19 13:08:26,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:26,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:26,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:26,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:26,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:26,190 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:26,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 843 places, 652 transitions, 14774 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:26,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:26,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:26,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:27,986 INFO L129 PetriNetUnfolder]: 949/3187 cut-off events. [2022-01-19 13:08:27,987 INFO L130 PetriNetUnfolder]: For 173081/173094 co-relation queries the response was YES. [2022-01-19 13:08:28,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29703 conditions, 3187 events. 949/3187 cut-off events. For 173081/173094 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 25338 event pairs, 410 based on Foata normal form. 1/3089 useless extension candidates. Maximal degree in co-relation 29365. Up to 899 conditions per place. [2022-01-19 13:08:28,089 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 412 selfloop transitions, 149 changer transitions 62/764 dead transitions. [2022-01-19 13:08:28,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 856 places, 764 transitions, 19831 flow [2022-01-19 13:08:28,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:08:28,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:08:28,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6087 transitions. [2022-01-19 13:08:28,092 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762781954887218 [2022-01-19 13:08:28,092 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6087 transitions. [2022-01-19 13:08:28,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6087 transitions. [2022-01-19 13:08:28,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:28,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6087 transitions. [2022-01-19 13:08:28,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.18421052631578) internal successors, (6087), 38 states have internal predecessors, (6087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:28,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:28,099 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:28,100 INFO L186 Difference]: Start difference. First operand has 843 places, 652 transitions, 14774 flow. Second operand 38 states and 6087 transitions. [2022-01-19 13:08:28,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 856 places, 764 transitions, 19831 flow [2022-01-19 13:08:29,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 835 places, 764 transitions, 19193 flow, removed 208 selfloop flow, removed 21 redundant places. [2022-01-19 13:08:29,468 INFO L242 Difference]: Finished difference. Result has 858 places, 660 transitions, 15019 flow [2022-01-19 13:08:29,469 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14382, PETRI_DIFFERENCE_MINUEND_PLACES=798, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=15019, PETRI_PLACES=858, PETRI_TRANSITIONS=660} [2022-01-19 13:08:29,469 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 671 predicate places. [2022-01-19 13:08:29,469 INFO L470 AbstractCegarLoop]: Abstraction has has 858 places, 660 transitions, 15019 flow [2022-01-19 13:08:29,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:29,469 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:29,469 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:29,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-01-19 13:08:29,470 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:29,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:29,470 INFO L85 PathProgramCache]: Analyzing trace with hash 948920408, now seen corresponding path program 159 times [2022-01-19 13:08:29,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:29,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487844877] [2022-01-19 13:08:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:29,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:29,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:29,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487844877] [2022-01-19 13:08:29,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487844877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:29,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:29,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:29,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171348418] [2022-01-19 13:08:29,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:29,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:29,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:29,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:29,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:29,580 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:29,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 660 transitions, 15019 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:29,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:29,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:29,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:31,331 INFO L129 PetriNetUnfolder]: 980/3268 cut-off events. [2022-01-19 13:08:31,331 INFO L130 PetriNetUnfolder]: For 182050/182063 co-relation queries the response was YES. [2022-01-19 13:08:31,410 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31303 conditions, 3268 events. 980/3268 cut-off events. For 182050/182063 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 26151 event pairs, 456 based on Foata normal form. 1/3166 useless extension candidates. Maximal degree in co-relation 30960. Up to 909 conditions per place. [2022-01-19 13:08:31,426 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 380 selfloop transitions, 198 changer transitions 62/781 dead transitions. [2022-01-19 13:08:31,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 869 places, 781 transitions, 20551 flow [2022-01-19 13:08:31,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:08:31,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:08:31,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2022-01-19 13:08:31,429 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2022-01-19 13:08:31,429 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2022-01-19 13:08:31,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2022-01-19 13:08:31,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:31,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2022-01-19 13:08:31,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:31,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:31,436 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:31,437 INFO L186 Difference]: Start difference. First operand has 858 places, 660 transitions, 15019 flow. Second operand 36 states and 5770 transitions. [2022-01-19 13:08:31,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 869 places, 781 transitions, 20551 flow [2022-01-19 13:08:32,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 848 places, 781 transitions, 19997 flow, removed 194 selfloop flow, removed 21 redundant places. [2022-01-19 13:08:32,868 INFO L242 Difference]: Finished difference. Result has 874 places, 681 transitions, 16024 flow [2022-01-19 13:08:32,868 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14702, PETRI_DIFFERENCE_MINUEND_PLACES=813, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=16024, PETRI_PLACES=874, PETRI_TRANSITIONS=681} [2022-01-19 13:08:32,869 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 687 predicate places. [2022-01-19 13:08:32,869 INFO L470 AbstractCegarLoop]: Abstraction has has 874 places, 681 transitions, 16024 flow [2022-01-19 13:08:32,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:32,869 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:32,869 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:32,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-01-19 13:08:32,869 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:32,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:32,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2086298424, now seen corresponding path program 160 times [2022-01-19 13:08:32,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:32,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59643282] [2022-01-19 13:08:32,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:32,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:32,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:32,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59643282] [2022-01-19 13:08:32,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59643282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:32,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:32,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:32,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697928095] [2022-01-19 13:08:32,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:32,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:32,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:32,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:32,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:32,983 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:32,984 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 681 transitions, 16024 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:32,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:32,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:32,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:34,818 INFO L129 PetriNetUnfolder]: 1005/3333 cut-off events. [2022-01-19 13:08:34,818 INFO L130 PetriNetUnfolder]: For 212971/212984 co-relation queries the response was YES. [2022-01-19 13:08:34,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32640 conditions, 3333 events. 1005/3333 cut-off events. For 212971/212984 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 26796 event pairs, 461 based on Foata normal form. 1/3232 useless extension candidates. Maximal degree in co-relation 32289. Up to 911 conditions per place. [2022-01-19 13:08:34,913 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 431 selfloop transitions, 168 changer transitions 63/803 dead transitions. [2022-01-19 13:08:34,913 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 887 places, 803 transitions, 21665 flow [2022-01-19 13:08:34,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:08:34,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:08:34,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5772 transitions. [2022-01-19 13:08:34,916 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634920634920634 [2022-01-19 13:08:34,916 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5772 transitions. [2022-01-19 13:08:34,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5772 transitions. [2022-01-19 13:08:34,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:34,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5772 transitions. [2022-01-19 13:08:34,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.33333333333334) internal successors, (5772), 36 states have internal predecessors, (5772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:34,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:34,923 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:34,923 INFO L186 Difference]: Start difference. First operand has 874 places, 681 transitions, 16024 flow. Second operand 36 states and 5772 transitions. [2022-01-19 13:08:34,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 887 places, 803 transitions, 21665 flow [2022-01-19 13:08:36,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 866 places, 803 transitions, 20978 flow, removed 225 selfloop flow, removed 21 redundant places. [2022-01-19 13:08:36,483 INFO L242 Difference]: Finished difference. Result has 892 places, 701 transitions, 16838 flow [2022-01-19 13:08:36,484 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15571, PETRI_DIFFERENCE_MINUEND_PLACES=831, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=16838, PETRI_PLACES=892, PETRI_TRANSITIONS=701} [2022-01-19 13:08:36,484 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 705 predicate places. [2022-01-19 13:08:36,484 INFO L470 AbstractCegarLoop]: Abstraction has has 892 places, 701 transitions, 16838 flow [2022-01-19 13:08:36,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:36,484 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:36,484 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:36,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-01-19 13:08:36,485 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:36,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:36,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1018448108, now seen corresponding path program 161 times [2022-01-19 13:08:36,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:36,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957384093] [2022-01-19 13:08:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:36,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:36,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:36,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957384093] [2022-01-19 13:08:36,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957384093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:36,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:36,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:36,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601908980] [2022-01-19 13:08:36,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:36,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:36,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:36,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:36,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:36,616 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:36,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 701 transitions, 16838 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:36,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:36,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:36,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:38,628 INFO L129 PetriNetUnfolder]: 1024/3401 cut-off events. [2022-01-19 13:08:38,628 INFO L130 PetriNetUnfolder]: For 231266/231279 co-relation queries the response was YES. [2022-01-19 13:08:38,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33946 conditions, 3401 events. 1024/3401 cut-off events. For 231266/231279 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 27503 event pairs, 452 based on Foata normal form. 1/3300 useless extension candidates. Maximal degree in co-relation 33587. Up to 917 conditions per place. [2022-01-19 13:08:38,907 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 452 selfloop transitions, 165 changer transitions 61/819 dead transitions. [2022-01-19 13:08:38,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 819 transitions, 22685 flow [2022-01-19 13:08:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:08:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:08:38,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6089 transitions. [2022-01-19 13:08:38,910 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7630325814536341 [2022-01-19 13:08:38,910 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6089 transitions. [2022-01-19 13:08:38,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6089 transitions. [2022-01-19 13:08:38,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:38,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6089 transitions. [2022-01-19 13:08:38,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.23684210526315) internal successors, (6089), 38 states have internal predecessors, (6089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:38,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:38,917 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:38,917 INFO L186 Difference]: Start difference. First operand has 892 places, 701 transitions, 16838 flow. Second operand 38 states and 6089 transitions. [2022-01-19 13:08:38,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 819 transitions, 22685 flow [2022-01-19 13:08:40,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 887 places, 819 transitions, 21941 flow, removed 291 selfloop flow, removed 20 redundant places. [2022-01-19 13:08:40,673 INFO L242 Difference]: Finished difference. Result has 910 places, 717 transitions, 17487 flow [2022-01-19 13:08:40,673 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16454, PETRI_DIFFERENCE_MINUEND_PLACES=850, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=17487, PETRI_PLACES=910, PETRI_TRANSITIONS=717} [2022-01-19 13:08:40,673 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 723 predicate places. [2022-01-19 13:08:40,673 INFO L470 AbstractCegarLoop]: Abstraction has has 910 places, 717 transitions, 17487 flow [2022-01-19 13:08:40,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:40,674 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:40,674 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:40,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-01-19 13:08:40,674 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:40,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:40,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2128100980, now seen corresponding path program 162 times [2022-01-19 13:08:40,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:40,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217894669] [2022-01-19 13:08:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:40,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:40,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:40,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217894669] [2022-01-19 13:08:40,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217894669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:40,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:40,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:40,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055563384] [2022-01-19 13:08:40,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:40,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:40,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:40,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:40,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:40,784 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:40,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 717 transitions, 17487 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:40,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:40,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:40,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:42,773 INFO L129 PetriNetUnfolder]: 1018/3394 cut-off events. [2022-01-19 13:08:42,774 INFO L130 PetriNetUnfolder]: For 227263/227276 co-relation queries the response was YES. [2022-01-19 13:08:42,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33814 conditions, 3394 events. 1018/3394 cut-off events. For 227263/227276 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 27546 event pairs, 455 based on Foata normal form. 1/3292 useless extension candidates. Maximal degree in co-relation 33449. Up to 921 conditions per place. [2022-01-19 13:08:42,874 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 415 selfloop transitions, 206 changer transitions 62/824 dead transitions. [2022-01-19 13:08:42,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 922 places, 824 transitions, 22819 flow [2022-01-19 13:08:42,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:08:42,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:08:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2022-01-19 13:08:42,877 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2022-01-19 13:08:42,877 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2022-01-19 13:08:42,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2022-01-19 13:08:42,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:42,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2022-01-19 13:08:42,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:42,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:42,884 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:42,885 INFO L186 Difference]: Start difference. First operand has 910 places, 717 transitions, 17487 flow. Second operand 37 states and 5925 transitions. [2022-01-19 13:08:42,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 922 places, 824 transitions, 22819 flow [2022-01-19 13:08:44,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 904 places, 824 transitions, 22286 flow, removed 206 selfloop flow, removed 18 redundant places. [2022-01-19 13:08:44,679 INFO L242 Difference]: Finished difference. Result has 928 places, 726 transitions, 18005 flow [2022-01-19 13:08:44,680 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17171, PETRI_DIFFERENCE_MINUEND_PLACES=868, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=18005, PETRI_PLACES=928, PETRI_TRANSITIONS=726} [2022-01-19 13:08:44,680 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 741 predicate places. [2022-01-19 13:08:44,680 INFO L470 AbstractCegarLoop]: Abstraction has has 928 places, 726 transitions, 18005 flow [2022-01-19 13:08:44,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:44,680 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:44,680 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:44,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-01-19 13:08:44,680 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:44,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:44,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1347111622, now seen corresponding path program 163 times [2022-01-19 13:08:44,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:44,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082107970] [2022-01-19 13:08:44,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:44,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:44,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:44,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:44,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082107970] [2022-01-19 13:08:44,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082107970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:44,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:44,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:44,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418425283] [2022-01-19 13:08:44,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:44,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:44,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:44,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:44,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:44,825 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:44,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 928 places, 726 transitions, 18005 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:44,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:44,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:44,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:46,867 INFO L129 PetriNetUnfolder]: 1014/3386 cut-off events. [2022-01-19 13:08:46,868 INFO L130 PetriNetUnfolder]: For 238932/238945 co-relation queries the response was YES. [2022-01-19 13:08:46,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33626 conditions, 3386 events. 1014/3386 cut-off events. For 238932/238945 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 27434 event pairs, 448 based on Foata normal form. 1/3284 useless extension candidates. Maximal degree in co-relation 33253. Up to 913 conditions per place. [2022-01-19 13:08:46,972 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 468 selfloop transitions, 165 changer transitions 62/836 dead transitions. [2022-01-19 13:08:46,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 941 places, 836 transitions, 23627 flow [2022-01-19 13:08:46,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:08:46,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:08:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5935 transitions. [2022-01-19 13:08:46,975 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638352638352638 [2022-01-19 13:08:46,975 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5935 transitions. [2022-01-19 13:08:46,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5935 transitions. [2022-01-19 13:08:46,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:46,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5935 transitions. [2022-01-19 13:08:46,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.40540540540542) internal successors, (5935), 37 states have internal predecessors, (5935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:46,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:46,983 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:46,983 INFO L186 Difference]: Start difference. First operand has 928 places, 726 transitions, 18005 flow. Second operand 37 states and 5935 transitions. [2022-01-19 13:08:46,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 941 places, 836 transitions, 23627 flow [2022-01-19 13:08:48,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 921 places, 836 transitions, 22923 flow, removed 228 selfloop flow, removed 20 redundant places. [2022-01-19 13:08:48,861 INFO L242 Difference]: Finished difference. Result has 945 places, 734 transitions, 18256 flow [2022-01-19 13:08:48,861 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17543, PETRI_DIFFERENCE_MINUEND_PLACES=885, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=18256, PETRI_PLACES=945, PETRI_TRANSITIONS=734} [2022-01-19 13:08:48,861 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 758 predicate places. [2022-01-19 13:08:48,862 INFO L470 AbstractCegarLoop]: Abstraction has has 945 places, 734 transitions, 18256 flow [2022-01-19 13:08:48,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:48,862 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:48,862 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:48,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-01-19 13:08:48,862 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:48,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:48,862 INFO L85 PathProgramCache]: Analyzing trace with hash -229903456, now seen corresponding path program 164 times [2022-01-19 13:08:48,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:48,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362213646] [2022-01-19 13:08:48,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:48,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:48,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:48,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:48,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362213646] [2022-01-19 13:08:48,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362213646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:48,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:48,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:48,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936444366] [2022-01-19 13:08:48,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:48,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:48,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:48,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:48,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:48,971 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:48,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 945 places, 734 transitions, 18256 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:48,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:48,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:48,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:50,970 INFO L129 PetriNetUnfolder]: 1002/3377 cut-off events. [2022-01-19 13:08:50,970 INFO L130 PetriNetUnfolder]: For 240387/240400 co-relation queries the response was YES. [2022-01-19 13:08:51,058 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33093 conditions, 3377 events. 1002/3377 cut-off events. For 240387/240400 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 27542 event pairs, 403 based on Foata normal form. 1/3277 useless extension candidates. Maximal degree in co-relation 32713. Up to 911 conditions per place. [2022-01-19 13:08:51,072 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 453 selfloop transitions, 182 changer transitions 63/839 dead transitions. [2022-01-19 13:08:51,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 959 places, 839 transitions, 23684 flow [2022-01-19 13:08:51,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:08:51,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:08:51,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6081 transitions. [2022-01-19 13:08:51,075 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76203007518797 [2022-01-19 13:08:51,075 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6081 transitions. [2022-01-19 13:08:51,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6081 transitions. [2022-01-19 13:08:51,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:51,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6081 transitions. [2022-01-19 13:08:51,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.02631578947367) internal successors, (6081), 38 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:51,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:51,083 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:51,083 INFO L186 Difference]: Start difference. First operand has 945 places, 734 transitions, 18256 flow. Second operand 38 states and 6081 transitions. [2022-01-19 13:08:51,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 959 places, 839 transitions, 23684 flow [2022-01-19 13:08:53,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 937 places, 839 transitions, 23048 flow, removed 219 selfloop flow, removed 22 redundant places. [2022-01-19 13:08:53,129 INFO L242 Difference]: Finished difference. Result has 959 places, 740 transitions, 18478 flow [2022-01-19 13:08:53,129 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17848, PETRI_DIFFERENCE_MINUEND_PLACES=900, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=18478, PETRI_PLACES=959, PETRI_TRANSITIONS=740} [2022-01-19 13:08:53,129 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 772 predicate places. [2022-01-19 13:08:53,129 INFO L470 AbstractCegarLoop]: Abstraction has has 959 places, 740 transitions, 18478 flow [2022-01-19 13:08:53,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:53,130 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:53,130 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:53,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-01-19 13:08:53,130 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:53,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:53,130 INFO L85 PathProgramCache]: Analyzing trace with hash -79783928, now seen corresponding path program 165 times [2022-01-19 13:08:53,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:53,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953057557] [2022-01-19 13:08:53,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:53,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:53,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:53,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953057557] [2022-01-19 13:08:53,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953057557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:53,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:53,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:53,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286303746] [2022-01-19 13:08:53,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:53,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:53,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:53,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:53,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:53,265 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:53,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 959 places, 740 transitions, 18478 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:53,266 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:53,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:53,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:55,057 INFO L129 PetriNetUnfolder]: 963/3264 cut-off events. [2022-01-19 13:08:55,057 INFO L130 PetriNetUnfolder]: For 241680/241693 co-relation queries the response was YES. [2022-01-19 13:08:55,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31440 conditions, 3264 events. 963/3264 cut-off events. For 241680/241693 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 26462 event pairs, 324 based on Foata normal form. 1/3178 useless extension candidates. Maximal degree in co-relation 31057. Up to 898 conditions per place. [2022-01-19 13:08:55,155 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 409 selfloop transitions, 206 changer transitions 65/821 dead transitions. [2022-01-19 13:08:55,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 964 places, 821 transitions, 21383 flow [2022-01-19 13:08:55,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:08:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:08:55,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4797 transitions. [2022-01-19 13:08:55,157 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7614285714285715 [2022-01-19 13:08:55,157 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4797 transitions. [2022-01-19 13:08:55,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4797 transitions. [2022-01-19 13:08:55,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:55,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4797 transitions. [2022-01-19 13:08:55,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.9) internal successors, (4797), 30 states have internal predecessors, (4797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:55,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:55,164 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:55,164 INFO L186 Difference]: Start difference. First operand has 959 places, 740 transitions, 18478 flow. Second operand 30 states and 4797 transitions. [2022-01-19 13:08:55,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 964 places, 821 transitions, 21383 flow [2022-01-19 13:08:57,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 940 places, 821 transitions, 20870 flow, removed 170 selfloop flow, removed 24 redundant places. [2022-01-19 13:08:57,222 INFO L242 Difference]: Finished difference. Result has 951 places, 701 transitions, 17365 flow [2022-01-19 13:08:57,222 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18079, PETRI_DIFFERENCE_MINUEND_PLACES=911, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17365, PETRI_PLACES=951, PETRI_TRANSITIONS=701} [2022-01-19 13:08:57,222 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 764 predicate places. [2022-01-19 13:08:57,222 INFO L470 AbstractCegarLoop]: Abstraction has has 951 places, 701 transitions, 17365 flow [2022-01-19 13:08:57,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:57,223 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:08:57,223 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:08:57,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-01-19 13:08:57,223 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:08:57,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:08:57,223 INFO L85 PathProgramCache]: Analyzing trace with hash -632030626, now seen corresponding path program 166 times [2022-01-19 13:08:57,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:08:57,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336180506] [2022-01-19 13:08:57,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:08:57,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:08:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:08:57,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:08:57,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:08:57,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336180506] [2022-01-19 13:08:57,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336180506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:08:57,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:08:57,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:08:57,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244866927] [2022-01-19 13:08:57,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:08:57,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:08:57,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:08:57,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:08:57,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:08:57,328 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:08:57,329 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 951 places, 701 transitions, 17365 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:57,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:08:57,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:08:57,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:08:58,995 INFO L129 PetriNetUnfolder]: 958/3249 cut-off events. [2022-01-19 13:08:58,995 INFO L130 PetriNetUnfolder]: For 237398/237411 co-relation queries the response was YES. [2022-01-19 13:08:59,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31273 conditions, 3249 events. 958/3249 cut-off events. For 237398/237411 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 26252 event pairs, 374 based on Foata normal form. 1/3153 useless extension candidates. Maximal degree in co-relation 30900. Up to 896 conditions per place. [2022-01-19 13:08:59,089 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 436 selfloop transitions, 182 changer transitions 57/816 dead transitions. [2022-01-19 13:08:59,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 933 places, 816 transitions, 21868 flow [2022-01-19 13:08:59,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:08:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:08:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 13:08:59,092 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 13:08:59,092 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 13:08:59,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 13:08:59,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:08:59,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 13:08:59,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:59,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:59,098 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:08:59,098 INFO L186 Difference]: Start difference. First operand has 951 places, 701 transitions, 17365 flow. Second operand 30 states and 4817 transitions. [2022-01-19 13:08:59,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 933 places, 816 transitions, 21868 flow [2022-01-19 13:09:00,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 887 places, 816 transitions, 20009 flow, removed 141 selfloop flow, removed 46 redundant places. [2022-01-19 13:09:00,796 INFO L242 Difference]: Finished difference. Result has 902 places, 710 transitions, 16650 flow [2022-01-19 13:09:00,796 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15863, PETRI_DIFFERENCE_MINUEND_PLACES=858, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16650, PETRI_PLACES=902, PETRI_TRANSITIONS=710} [2022-01-19 13:09:00,797 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 715 predicate places. [2022-01-19 13:09:00,797 INFO L470 AbstractCegarLoop]: Abstraction has has 902 places, 710 transitions, 16650 flow [2022-01-19 13:09:00,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:00,797 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:00,797 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:00,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-01-19 13:09:00,797 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:00,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:00,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2117682024, now seen corresponding path program 167 times [2022-01-19 13:09:00,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:00,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961256643] [2022-01-19 13:09:00,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:00,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:00,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:00,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961256643] [2022-01-19 13:09:00,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961256643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:00,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:00,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:00,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485097154] [2022-01-19 13:09:00,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:00,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:00,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:00,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:00,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:00,918 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:00,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 902 places, 710 transitions, 16650 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:00,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:00,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:00,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:02,538 INFO L129 PetriNetUnfolder]: 933/3173 cut-off events. [2022-01-19 13:09:02,538 INFO L130 PetriNetUnfolder]: For 218900/218913 co-relation queries the response was YES. [2022-01-19 13:09:02,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29244 conditions, 3173 events. 933/3173 cut-off events. For 218900/218913 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 25465 event pairs, 371 based on Foata normal form. 1/3078 useless extension candidates. Maximal degree in co-relation 28887. Up to 889 conditions per place. [2022-01-19 13:09:02,628 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 430 selfloop transitions, 156 changer transitions 63/790 dead transitions. [2022-01-19 13:09:02,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 916 places, 790 transitions, 19903 flow [2022-01-19 13:09:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:09:02,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:09:02,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4805 transitions. [2022-01-19 13:09:02,630 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626984126984127 [2022-01-19 13:09:02,630 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4805 transitions. [2022-01-19 13:09:02,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4805 transitions. [2022-01-19 13:09:02,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:02,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4805 transitions. [2022-01-19 13:09:02,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.16666666666666) internal successors, (4805), 30 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:02,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:02,636 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:02,636 INFO L186 Difference]: Start difference. First operand has 902 places, 710 transitions, 16650 flow. Second operand 30 states and 4805 transitions. [2022-01-19 13:09:02,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 916 places, 790 transitions, 19903 flow [2022-01-19 13:09:04,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 902 places, 790 transitions, 19313 flow, removed 227 selfloop flow, removed 14 redundant places. [2022-01-19 13:09:04,199 INFO L242 Difference]: Finished difference. Result has 913 places, 679 transitions, 15697 flow [2022-01-19 13:09:04,199 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16216, PETRI_DIFFERENCE_MINUEND_PLACES=873, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15697, PETRI_PLACES=913, PETRI_TRANSITIONS=679} [2022-01-19 13:09:04,199 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 726 predicate places. [2022-01-19 13:09:04,199 INFO L470 AbstractCegarLoop]: Abstraction has has 913 places, 679 transitions, 15697 flow [2022-01-19 13:09:04,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:04,200 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:04,200 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:04,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-01-19 13:09:04,200 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:04,200 INFO L85 PathProgramCache]: Analyzing trace with hash -743667636, now seen corresponding path program 168 times [2022-01-19 13:09:04,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:04,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835346072] [2022-01-19 13:09:04,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:04,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:04,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:04,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835346072] [2022-01-19 13:09:04,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835346072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:04,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:04,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:04,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061466241] [2022-01-19 13:09:04,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:04,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:04,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:04,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:04,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:04,302 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:04,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 913 places, 679 transitions, 15697 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:04,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:04,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:04,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:05,962 INFO L129 PetriNetUnfolder]: 937/3214 cut-off events. [2022-01-19 13:09:05,962 INFO L130 PetriNetUnfolder]: For 205034/205047 co-relation queries the response was YES. [2022-01-19 13:09:06,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29114 conditions, 3214 events. 937/3214 cut-off events. For 205034/205047 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 25909 event pairs, 367 based on Foata normal form. 1/3119 useless extension candidates. Maximal degree in co-relation 28757. Up to 889 conditions per place. [2022-01-19 13:09:06,054 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 418 selfloop transitions, 170 changer transitions 71/800 dead transitions. [2022-01-19 13:09:06,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 800 transitions, 19863 flow [2022-01-19 13:09:06,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-19 13:09:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-01-19 13:09:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5442 transitions. [2022-01-19 13:09:06,057 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621848739495798 [2022-01-19 13:09:06,057 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5442 transitions. [2022-01-19 13:09:06,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5442 transitions. [2022-01-19 13:09:06,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:06,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5442 transitions. [2022-01-19 13:09:06,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 160.05882352941177) internal successors, (5442), 34 states have internal predecessors, (5442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:06,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:06,064 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:06,064 INFO L186 Difference]: Start difference. First operand has 913 places, 679 transitions, 15697 flow. Second operand 34 states and 5442 transitions. [2022-01-19 13:09:06,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 800 transitions, 19863 flow [2022-01-19 13:09:07,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 869 places, 800 transitions, 18730 flow, removed 127 selfloop flow, removed 36 redundant places. [2022-01-19 13:09:07,683 INFO L242 Difference]: Finished difference. Result has 889 places, 682 transitions, 15466 flow [2022-01-19 13:09:07,683 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14854, PETRI_DIFFERENCE_MINUEND_PLACES=836, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=15466, PETRI_PLACES=889, PETRI_TRANSITIONS=682} [2022-01-19 13:09:07,683 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 702 predicate places. [2022-01-19 13:09:07,683 INFO L470 AbstractCegarLoop]: Abstraction has has 889 places, 682 transitions, 15466 flow [2022-01-19 13:09:07,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:07,684 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:07,684 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:07,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-01-19 13:09:07,684 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:07,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:07,684 INFO L85 PathProgramCache]: Analyzing trace with hash -472356196, now seen corresponding path program 169 times [2022-01-19 13:09:07,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:07,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667598927] [2022-01-19 13:09:07,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:07,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:07,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:07,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:07,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667598927] [2022-01-19 13:09:07,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667598927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:07,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:07,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:07,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500692446] [2022-01-19 13:09:07,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:07,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:07,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:07,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:07,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:07,811 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:07,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 682 transitions, 15466 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:07,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:07,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:07,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:09,503 INFO L129 PetriNetUnfolder]: 940/3211 cut-off events. [2022-01-19 13:09:09,503 INFO L130 PetriNetUnfolder]: For 199017/199030 co-relation queries the response was YES. [2022-01-19 13:09:09,582 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28329 conditions, 3211 events. 940/3211 cut-off events. For 199017/199030 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 25870 event pairs, 365 based on Foata normal form. 1/3114 useless extension candidates. Maximal degree in co-relation 27975. Up to 889 conditions per place. [2022-01-19 13:09:09,595 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 422 selfloop transitions, 176 changer transitions 58/797 dead transitions. [2022-01-19 13:09:09,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 797 transitions, 19429 flow [2022-01-19 13:09:09,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:09:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:09:09,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4660 transitions. [2022-01-19 13:09:09,598 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651888341543513 [2022-01-19 13:09:09,598 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4660 transitions. [2022-01-19 13:09:09,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4660 transitions. [2022-01-19 13:09:09,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:09,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4660 transitions. [2022-01-19 13:09:09,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.68965517241378) internal successors, (4660), 29 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:09,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:09,603 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:09,604 INFO L186 Difference]: Start difference. First operand has 889 places, 682 transitions, 15466 flow. Second operand 29 states and 4660 transitions. [2022-01-19 13:09:09,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 797 transitions, 19429 flow [2022-01-19 13:09:11,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 869 places, 797 transitions, 18454 flow, removed 274 selfloop flow, removed 28 redundant places. [2022-01-19 13:09:11,184 INFO L242 Difference]: Finished difference. Result has 883 places, 694 transitions, 15579 flow [2022-01-19 13:09:11,184 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14882, PETRI_DIFFERENCE_MINUEND_PLACES=841, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15579, PETRI_PLACES=883, PETRI_TRANSITIONS=694} [2022-01-19 13:09:11,185 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 696 predicate places. [2022-01-19 13:09:11,185 INFO L470 AbstractCegarLoop]: Abstraction has has 883 places, 694 transitions, 15579 flow [2022-01-19 13:09:11,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:11,185 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:11,185 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:11,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-01-19 13:09:11,185 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:11,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:11,185 INFO L85 PathProgramCache]: Analyzing trace with hash -686172648, now seen corresponding path program 170 times [2022-01-19 13:09:11,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:11,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571264865] [2022-01-19 13:09:11,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:11,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:11,287 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 13:09:11,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:11,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571264865] [2022-01-19 13:09:11,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571264865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:11,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:11,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:11,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265358191] [2022-01-19 13:09:11,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:11,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:11,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:11,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:11,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:11,289 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:11,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 883 places, 694 transitions, 15579 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:11,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:11,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:11,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:12,937 INFO L129 PetriNetUnfolder]: 941/3216 cut-off events. [2022-01-19 13:09:12,937 INFO L130 PetriNetUnfolder]: For 178193/178206 co-relation queries the response was YES. [2022-01-19 13:09:13,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27500 conditions, 3216 events. 941/3216 cut-off events. For 178193/178206 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 25942 event pairs, 365 based on Foata normal form. 1/3118 useless extension candidates. Maximal degree in co-relation 27152. Up to 890 conditions per place. [2022-01-19 13:09:13,021 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 421 selfloop transitions, 185 changer transitions 58/805 dead transitions. [2022-01-19 13:09:13,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 805 transitions, 19317 flow [2022-01-19 13:09:13,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:09:13,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:09:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4656 transitions. [2022-01-19 13:09:13,024 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7645320197044335 [2022-01-19 13:09:13,024 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4656 transitions. [2022-01-19 13:09:13,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4656 transitions. [2022-01-19 13:09:13,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:13,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4656 transitions. [2022-01-19 13:09:13,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.55172413793105) internal successors, (4656), 29 states have internal predecessors, (4656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:13,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:13,030 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:13,030 INFO L186 Difference]: Start difference. First operand has 883 places, 694 transitions, 15579 flow. Second operand 29 states and 4656 transitions. [2022-01-19 13:09:13,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 805 transitions, 19317 flow [2022-01-19 13:09:14,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 885 places, 805 transitions, 18918 flow, removed 45 selfloop flow, removed 12 redundant places. [2022-01-19 13:09:14,445 INFO L242 Difference]: Finished difference. Result has 899 places, 706 transitions, 16037 flow [2022-01-19 13:09:14,445 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15244, PETRI_DIFFERENCE_MINUEND_PLACES=857, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=16037, PETRI_PLACES=899, PETRI_TRANSITIONS=706} [2022-01-19 13:09:14,445 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 712 predicate places. [2022-01-19 13:09:14,445 INFO L470 AbstractCegarLoop]: Abstraction has has 899 places, 706 transitions, 16037 flow [2022-01-19 13:09:14,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:14,446 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:14,446 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:14,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-01-19 13:09:14,446 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:14,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:14,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1099621338, now seen corresponding path program 171 times [2022-01-19 13:09:14,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:14,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7350832] [2022-01-19 13:09:14,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:14,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:14,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:14,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:14,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7350832] [2022-01-19 13:09:14,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7350832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:14,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:14,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:14,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720467809] [2022-01-19 13:09:14,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:14,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:14,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:14,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:14,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:14,587 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:14,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 899 places, 706 transitions, 16037 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:14,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:14,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:14,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:16,271 INFO L129 PetriNetUnfolder]: 926/3186 cut-off events. [2022-01-19 13:09:16,271 INFO L130 PetriNetUnfolder]: For 185670/185683 co-relation queries the response was YES. [2022-01-19 13:09:16,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27816 conditions, 3186 events. 926/3186 cut-off events. For 185670/185683 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 25618 event pairs, 372 based on Foata normal form. 1/3091 useless extension candidates. Maximal degree in co-relation 27462. Up to 888 conditions per place. [2022-01-19 13:09:16,359 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 422 selfloop transitions, 164 changer transitions 63/790 dead transitions. [2022-01-19 13:09:16,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 914 places, 790 transitions, 19028 flow [2022-01-19 13:09:16,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:09:16,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:09:16,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4807 transitions. [2022-01-19 13:09:16,362 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763015873015873 [2022-01-19 13:09:16,362 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4807 transitions. [2022-01-19 13:09:16,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4807 transitions. [2022-01-19 13:09:16,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:16,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4807 transitions. [2022-01-19 13:09:16,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.23333333333332) internal successors, (4807), 30 states have internal predecessors, (4807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:16,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:16,368 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:16,368 INFO L186 Difference]: Start difference. First operand has 899 places, 706 transitions, 16037 flow. Second operand 30 states and 4807 transitions. [2022-01-19 13:09:16,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 914 places, 790 transitions, 19028 flow [2022-01-19 13:09:17,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 901 places, 790 transitions, 18664 flow, removed 94 selfloop flow, removed 13 redundant places. [2022-01-19 13:09:17,967 INFO L242 Difference]: Finished difference. Result has 910 places, 686 transitions, 15555 flow [2022-01-19 13:09:17,967 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15732, PETRI_DIFFERENCE_MINUEND_PLACES=872, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15555, PETRI_PLACES=910, PETRI_TRANSITIONS=686} [2022-01-19 13:09:17,968 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 723 predicate places. [2022-01-19 13:09:17,968 INFO L470 AbstractCegarLoop]: Abstraction has has 910 places, 686 transitions, 15555 flow [2022-01-19 13:09:17,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:17,968 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:17,968 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:17,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-01-19 13:09:17,968 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:17,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:17,968 INFO L85 PathProgramCache]: Analyzing trace with hash -484841400, now seen corresponding path program 172 times [2022-01-19 13:09:17,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:17,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81922482] [2022-01-19 13:09:17,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:17,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:18,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:18,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81922482] [2022-01-19 13:09:18,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81922482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:18,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:18,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:18,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373877379] [2022-01-19 13:09:18,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:18,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:18,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:18,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:18,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:18,105 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:18,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 686 transitions, 15555 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:18,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:18,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:18,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:19,844 INFO L129 PetriNetUnfolder]: 942/3210 cut-off events. [2022-01-19 13:09:19,844 INFO L130 PetriNetUnfolder]: For 187001/187014 co-relation queries the response was YES. [2022-01-19 13:09:19,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28671 conditions, 3210 events. 942/3210 cut-off events. For 187001/187014 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 25819 event pairs, 412 based on Foata normal form. 1/3112 useless extension candidates. Maximal degree in co-relation 28316. Up to 889 conditions per place. [2022-01-19 13:09:19,936 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 435 selfloop transitions, 163 changer transitions 55/794 dead transitions. [2022-01-19 13:09:19,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 912 places, 794 transitions, 20015 flow [2022-01-19 13:09:19,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:09:19,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:09:19,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4824 transitions. [2022-01-19 13:09:19,939 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7657142857142857 [2022-01-19 13:09:19,939 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4824 transitions. [2022-01-19 13:09:19,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4824 transitions. [2022-01-19 13:09:19,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:19,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4824 transitions. [2022-01-19 13:09:19,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.8) internal successors, (4824), 30 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:19,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:19,945 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:19,945 INFO L186 Difference]: Start difference. First operand has 910 places, 686 transitions, 15555 flow. Second operand 30 states and 4824 transitions. [2022-01-19 13:09:19,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 912 places, 794 transitions, 20015 flow [2022-01-19 13:09:21,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 794 transitions, 19331 flow, removed 97 selfloop flow, removed 34 redundant places. [2022-01-19 13:09:21,541 INFO L242 Difference]: Finished difference. Result has 893 places, 698 transitions, 15973 flow [2022-01-19 13:09:21,541 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15057, PETRI_DIFFERENCE_MINUEND_PLACES=849, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15973, PETRI_PLACES=893, PETRI_TRANSITIONS=698} [2022-01-19 13:09:21,542 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 706 predicate places. [2022-01-19 13:09:21,542 INFO L470 AbstractCegarLoop]: Abstraction has has 893 places, 698 transitions, 15973 flow [2022-01-19 13:09:21,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:21,542 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:21,542 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:21,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-01-19 13:09:21,542 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:21,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:21,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1244779086, now seen corresponding path program 173 times [2022-01-19 13:09:21,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:21,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440380185] [2022-01-19 13:09:21,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:21,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:21,657 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 13:09:21,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:21,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440380185] [2022-01-19 13:09:21,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440380185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:21,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:21,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:21,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996241679] [2022-01-19 13:09:21,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:21,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:21,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:21,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:21,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:21,659 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:21,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 893 places, 698 transitions, 15973 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:21,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:21,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:21,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:23,315 INFO L129 PetriNetUnfolder]: 937/3200 cut-off events. [2022-01-19 13:09:23,315 INFO L130 PetriNetUnfolder]: For 200205/200218 co-relation queries the response was YES. [2022-01-19 13:09:23,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29171 conditions, 3200 events. 937/3200 cut-off events. For 200205/200218 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 25595 event pairs, 405 based on Foata normal form. 1/3103 useless extension candidates. Maximal degree in co-relation 28822. Up to 888 conditions per place. [2022-01-19 13:09:23,403 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 440 selfloop transitions, 170 changer transitions 58/809 dead transitions. [2022-01-19 13:09:23,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 906 places, 809 transitions, 20577 flow [2022-01-19 13:09:23,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:09:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:09:23,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4666 transitions. [2022-01-19 13:09:23,406 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7661740558292283 [2022-01-19 13:09:23,406 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4666 transitions. [2022-01-19 13:09:23,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4666 transitions. [2022-01-19 13:09:23,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:23,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4666 transitions. [2022-01-19 13:09:23,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.89655172413794) internal successors, (4666), 29 states have internal predecessors, (4666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:23,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:23,414 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:23,414 INFO L186 Difference]: Start difference. First operand has 893 places, 698 transitions, 15973 flow. Second operand 29 states and 4666 transitions. [2022-01-19 13:09:23,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 906 places, 809 transitions, 20577 flow [2022-01-19 13:09:25,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 894 places, 809 transitions, 19920 flow, removed 247 selfloop flow, removed 12 redundant places. [2022-01-19 13:09:25,099 INFO L242 Difference]: Finished difference. Result has 907 places, 714 transitions, 16697 flow [2022-01-19 13:09:25,099 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15513, PETRI_DIFFERENCE_MINUEND_PLACES=866, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=16697, PETRI_PLACES=907, PETRI_TRANSITIONS=714} [2022-01-19 13:09:25,099 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 720 predicate places. [2022-01-19 13:09:25,099 INFO L470 AbstractCegarLoop]: Abstraction has has 907 places, 714 transitions, 16697 flow [2022-01-19 13:09:25,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:25,100 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:25,100 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:25,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-01-19 13:09:25,100 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:25,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:25,100 INFO L85 PathProgramCache]: Analyzing trace with hash 4568056, now seen corresponding path program 174 times [2022-01-19 13:09:25,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:25,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950349870] [2022-01-19 13:09:25,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:25,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:25,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:25,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950349870] [2022-01-19 13:09:25,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950349870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:25,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:25,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:25,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203427123] [2022-01-19 13:09:25,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:25,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:25,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:25,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:25,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:25,214 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:25,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 907 places, 714 transitions, 16697 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:25,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:25,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:25,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:26,910 INFO L129 PetriNetUnfolder]: 938/3209 cut-off events. [2022-01-19 13:09:26,910 INFO L130 PetriNetUnfolder]: For 189655/189668 co-relation queries the response was YES. [2022-01-19 13:09:26,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28916 conditions, 3209 events. 938/3209 cut-off events. For 189655/189668 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 25766 event pairs, 402 based on Foata normal form. 1/3110 useless extension candidates. Maximal degree in co-relation 28562. Up to 889 conditions per place. [2022-01-19 13:09:27,001 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 453 selfloop transitions, 162 changer transitions 59/815 dead transitions. [2022-01-19 13:09:27,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 920 places, 815 transitions, 20703 flow [2022-01-19 13:09:27,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:09:27,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:09:27,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4515 transitions. [2022-01-19 13:09:27,003 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7678571428571429 [2022-01-19 13:09:27,003 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4515 transitions. [2022-01-19 13:09:27,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4515 transitions. [2022-01-19 13:09:27,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:27,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4515 transitions. [2022-01-19 13:09:27,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.25) internal successors, (4515), 28 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:27,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:27,009 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:27,009 INFO L186 Difference]: Start difference. First operand has 907 places, 714 transitions, 16697 flow. Second operand 28 states and 4515 transitions. [2022-01-19 13:09:27,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 920 places, 815 transitions, 20703 flow [2022-01-19 13:09:28,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 903 places, 815 transitions, 19618 flow, removed 446 selfloop flow, removed 17 redundant places. [2022-01-19 13:09:28,743 INFO L242 Difference]: Finished difference. Result has 915 places, 722 transitions, 16526 flow [2022-01-19 13:09:28,743 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15965, PETRI_DIFFERENCE_MINUEND_PLACES=876, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=16526, PETRI_PLACES=915, PETRI_TRANSITIONS=722} [2022-01-19 13:09:28,743 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 728 predicate places. [2022-01-19 13:09:28,744 INFO L470 AbstractCegarLoop]: Abstraction has has 915 places, 722 transitions, 16526 flow [2022-01-19 13:09:28,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:28,744 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:28,744 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:28,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-01-19 13:09:28,744 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:28,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:28,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1115585934, now seen corresponding path program 175 times [2022-01-19 13:09:28,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:28,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893531486] [2022-01-19 13:09:28,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:28,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:28,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:28,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893531486] [2022-01-19 13:09:28,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893531486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:28,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:28,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:28,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583215166] [2022-01-19 13:09:28,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:28,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:28,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:28,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:28,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:28,856 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:28,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 915 places, 722 transitions, 16526 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:28,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:28,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:28,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:30,480 INFO L129 PetriNetUnfolder]: 916/3141 cut-off events. [2022-01-19 13:09:30,480 INFO L130 PetriNetUnfolder]: For 148362/148375 co-relation queries the response was YES. [2022-01-19 13:09:30,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26252 conditions, 3141 events. 916/3141 cut-off events. For 148362/148375 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 25115 event pairs, 408 based on Foata normal form. 1/3042 useless extension candidates. Maximal degree in co-relation 25899. Up to 883 conditions per place. [2022-01-19 13:09:30,571 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 447 selfloop transitions, 143 changer transitions 61/792 dead transitions. [2022-01-19 13:09:30,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 931 places, 792 transitions, 19456 flow [2022-01-19 13:09:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:09:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:09:30,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 13:09:30,574 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 13:09:30,574 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 13:09:30,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 13:09:30,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:30,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 13:09:30,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:30,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:30,580 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:30,580 INFO L186 Difference]: Start difference. First operand has 915 places, 722 transitions, 16526 flow. Second operand 30 states and 4817 transitions. [2022-01-19 13:09:30,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 931 places, 792 transitions, 19456 flow [2022-01-19 13:09:32,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 916 places, 792 transitions, 19045 flow, removed 58 selfloop flow, removed 15 redundant places. [2022-01-19 13:09:32,031 INFO L242 Difference]: Finished difference. Result has 927 places, 698 transitions, 15803 flow [2022-01-19 13:09:32,031 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16164, PETRI_DIFFERENCE_MINUEND_PLACES=887, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15803, PETRI_PLACES=927, PETRI_TRANSITIONS=698} [2022-01-19 13:09:32,031 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 740 predicate places. [2022-01-19 13:09:32,031 INFO L470 AbstractCegarLoop]: Abstraction has has 927 places, 698 transitions, 15803 flow [2022-01-19 13:09:32,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:32,032 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:32,032 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:32,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-01-19 13:09:32,032 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:32,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:32,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1170635184, now seen corresponding path program 176 times [2022-01-19 13:09:32,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:32,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491669766] [2022-01-19 13:09:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:32,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:32,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:32,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:32,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491669766] [2022-01-19 13:09:32,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491669766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:32,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:32,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:32,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996596277] [2022-01-19 13:09:32,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:32,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:32,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:32,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:32,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:32,140 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:32,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 698 transitions, 15803 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:32,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:32,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:32,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:33,764 INFO L129 PetriNetUnfolder]: 915/3147 cut-off events. [2022-01-19 13:09:33,764 INFO L130 PetriNetUnfolder]: For 146412/146425 co-relation queries the response was YES. [2022-01-19 13:09:33,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26311 conditions, 3147 events. 915/3147 cut-off events. For 146412/146425 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 25181 event pairs, 390 based on Foata normal form. 1/3050 useless extension candidates. Maximal degree in co-relation 25957. Up to 883 conditions per place. [2022-01-19 13:09:33,853 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 439 selfloop transitions, 157 changer transitions 59/796 dead transitions. [2022-01-19 13:09:33,853 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 918 places, 796 transitions, 19548 flow [2022-01-19 13:09:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 13:09:33,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 13:09:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4350 transitions. [2022-01-19 13:09:33,855 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7671957671957672 [2022-01-19 13:09:33,855 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4350 transitions. [2022-01-19 13:09:33,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4350 transitions. [2022-01-19 13:09:33,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:33,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4350 transitions. [2022-01-19 13:09:33,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 161.11111111111111) internal successors, (4350), 27 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:33,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:33,860 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:33,861 INFO L186 Difference]: Start difference. First operand has 927 places, 698 transitions, 15803 flow. Second operand 27 states and 4350 transitions. [2022-01-19 13:09:33,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 918 places, 796 transitions, 19548 flow [2022-01-19 13:09:35,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 885 places, 796 transitions, 18828 flow, removed 68 selfloop flow, removed 33 redundant places. [2022-01-19 13:09:35,221 INFO L242 Difference]: Finished difference. Result has 895 places, 702 transitions, 15673 flow [2022-01-19 13:09:35,222 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15250, PETRI_DIFFERENCE_MINUEND_PLACES=859, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=15673, PETRI_PLACES=895, PETRI_TRANSITIONS=702} [2022-01-19 13:09:35,222 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 708 predicate places. [2022-01-19 13:09:35,222 INFO L470 AbstractCegarLoop]: Abstraction has has 895 places, 702 transitions, 15673 flow [2022-01-19 13:09:35,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:35,222 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:35,222 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:35,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-01-19 13:09:35,223 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:35,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:35,223 INFO L85 PathProgramCache]: Analyzing trace with hash -407850412, now seen corresponding path program 177 times [2022-01-19 13:09:35,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:35,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158742682] [2022-01-19 13:09:35,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:35,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:35,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:35,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158742682] [2022-01-19 13:09:35,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158742682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:35,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:35,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:35,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285962627] [2022-01-19 13:09:35,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:35,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:35,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:35,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:35,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:35,332 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:35,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 895 places, 702 transitions, 15673 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:35,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:35,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:35,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:36,946 INFO L129 PetriNetUnfolder]: 889/3068 cut-off events. [2022-01-19 13:09:36,946 INFO L130 PetriNetUnfolder]: For 133684/133697 co-relation queries the response was YES. [2022-01-19 13:09:37,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25055 conditions, 3068 events. 889/3068 cut-off events. For 133684/133697 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 24351 event pairs, 389 based on Foata normal form. 1/2972 useless extension candidates. Maximal degree in co-relation 24711. Up to 875 conditions per place. [2022-01-19 13:09:37,030 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 429 selfloop transitions, 134 changer transitions 62/766 dead transitions. [2022-01-19 13:09:37,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 912 places, 766 transitions, 18422 flow [2022-01-19 13:09:37,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:09:37,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:09:37,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4808 transitions. [2022-01-19 13:09:37,033 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631746031746032 [2022-01-19 13:09:37,033 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4808 transitions. [2022-01-19 13:09:37,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4808 transitions. [2022-01-19 13:09:37,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:37,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4808 transitions. [2022-01-19 13:09:37,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.26666666666668) internal successors, (4808), 30 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:37,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:37,039 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:37,039 INFO L186 Difference]: Start difference. First operand has 895 places, 702 transitions, 15673 flow. Second operand 30 states and 4808 transitions. [2022-01-19 13:09:37,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 912 places, 766 transitions, 18422 flow [2022-01-19 13:09:38,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 894 places, 766 transitions, 17994 flow, removed 55 selfloop flow, removed 18 redundant places. [2022-01-19 13:09:38,322 INFO L242 Difference]: Finished difference. Result has 905 places, 670 transitions, 14713 flow [2022-01-19 13:09:38,322 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15301, PETRI_DIFFERENCE_MINUEND_PLACES=865, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=14713, PETRI_PLACES=905, PETRI_TRANSITIONS=670} [2022-01-19 13:09:38,323 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 718 predicate places. [2022-01-19 13:09:38,323 INFO L470 AbstractCegarLoop]: Abstraction has has 905 places, 670 transitions, 14713 flow [2022-01-19 13:09:38,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:38,323 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:38,323 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:38,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-01-19 13:09:38,323 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:38,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:38,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1877316860, now seen corresponding path program 178 times [2022-01-19 13:09:38,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:38,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138519069] [2022-01-19 13:09:38,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:38,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:38,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:38,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138519069] [2022-01-19 13:09:38,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138519069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:38,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:38,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:38,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268503307] [2022-01-19 13:09:38,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:38,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:38,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:38,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:38,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:38,424 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:38,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 905 places, 670 transitions, 14713 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:38,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:38,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:38,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:40,169 INFO L129 PetriNetUnfolder]: 900/3156 cut-off events. [2022-01-19 13:09:40,169 INFO L130 PetriNetUnfolder]: For 134683/134696 co-relation queries the response was YES. [2022-01-19 13:09:40,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25462 conditions, 3156 events. 900/3156 cut-off events. For 134683/134696 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 25385 event pairs, 384 based on Foata normal form. 1/3063 useless extension candidates. Maximal degree in co-relation 25117. Up to 875 conditions per place. [2022-01-19 13:09:40,257 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 401 selfloop transitions, 189 changer transitions 92/823 dead transitions. [2022-01-19 13:09:40,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 823 transitions, 20062 flow [2022-01-19 13:09:40,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-19 13:09:40,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-01-19 13:09:40,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6701 transitions. [2022-01-19 13:09:40,260 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.759750566893424 [2022-01-19 13:09:40,260 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6701 transitions. [2022-01-19 13:09:40,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6701 transitions. [2022-01-19 13:09:40,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:40,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6701 transitions. [2022-01-19 13:09:40,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 159.54761904761904) internal successors, (6701), 42 states have internal predecessors, (6701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:40,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:40,269 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:40,269 INFO L186 Difference]: Start difference. First operand has 905 places, 670 transitions, 14713 flow. Second operand 42 states and 6701 transitions. [2022-01-19 13:09:40,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 823 transitions, 20062 flow [2022-01-19 13:09:41,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 872 places, 823 transitions, 19111 flow, removed 46 selfloop flow, removed 33 redundant places. [2022-01-19 13:09:41,455 INFO L242 Difference]: Finished difference. Result has 902 places, 677 transitions, 15056 flow [2022-01-19 13:09:41,456 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14083, PETRI_DIFFERENCE_MINUEND_PLACES=831, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=15056, PETRI_PLACES=902, PETRI_TRANSITIONS=677} [2022-01-19 13:09:41,456 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 715 predicate places. [2022-01-19 13:09:41,456 INFO L470 AbstractCegarLoop]: Abstraction has has 902 places, 677 transitions, 15056 flow [2022-01-19 13:09:41,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:41,456 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:41,456 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:41,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-01-19 13:09:41,456 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:41,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:41,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1515229692, now seen corresponding path program 179 times [2022-01-19 13:09:41,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:41,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425907563] [2022-01-19 13:09:41,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:41,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:41,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:41,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425907563] [2022-01-19 13:09:41,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425907563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:41,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:41,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:41,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693651575] [2022-01-19 13:09:41,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:41,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:41,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:41,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:41,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:41,569 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:41,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 902 places, 677 transitions, 15056 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:41,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:41,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:41,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:43,147 INFO L129 PetriNetUnfolder]: 897/3098 cut-off events. [2022-01-19 13:09:43,147 INFO L130 PetriNetUnfolder]: For 127879/127892 co-relation queries the response was YES. [2022-01-19 13:09:43,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25006 conditions, 3098 events. 897/3098 cut-off events. For 127879/127892 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 24708 event pairs, 399 based on Foata normal form. 1/2998 useless extension candidates. Maximal degree in co-relation 24652. Up to 875 conditions per place. [2022-01-19 13:09:43,232 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 403 selfloop transitions, 178 changer transitions 57/779 dead transitions. [2022-01-19 13:09:43,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 901 places, 779 transitions, 18711 flow [2022-01-19 13:09:43,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:09:43,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:09:43,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2022-01-19 13:09:43,234 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 13:09:43,234 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2022-01-19 13:09:43,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2022-01-19 13:09:43,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:43,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2022-01-19 13:09:43,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:43,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:43,240 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:43,240 INFO L186 Difference]: Start difference. First operand has 902 places, 677 transitions, 15056 flow. Second operand 29 states and 4662 transitions. [2022-01-19 13:09:43,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 901 places, 779 transitions, 18711 flow [2022-01-19 13:09:44,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 863 places, 779 transitions, 17777 flow, removed 222 selfloop flow, removed 38 redundant places. [2022-01-19 13:09:44,387 INFO L242 Difference]: Finished difference. Result has 877 places, 689 transitions, 15179 flow [2022-01-19 13:09:44,387 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14473, PETRI_DIFFERENCE_MINUEND_PLACES=835, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15179, PETRI_PLACES=877, PETRI_TRANSITIONS=689} [2022-01-19 13:09:44,387 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 690 predicate places. [2022-01-19 13:09:44,387 INFO L470 AbstractCegarLoop]: Abstraction has has 877 places, 689 transitions, 15179 flow [2022-01-19 13:09:44,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:44,388 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:44,388 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:44,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-01-19 13:09:44,388 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:44,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1226740466, now seen corresponding path program 180 times [2022-01-19 13:09:44,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:44,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12089307] [2022-01-19 13:09:44,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:44,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:44,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:44,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12089307] [2022-01-19 13:09:44,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12089307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:44,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:44,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:44,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489999328] [2022-01-19 13:09:44,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:44,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:44,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:44,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:44,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:44,495 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:44,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 877 places, 689 transitions, 15179 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:44,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:44,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:44,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:46,001 INFO L129 PetriNetUnfolder]: 896/3095 cut-off events. [2022-01-19 13:09:46,001 INFO L130 PetriNetUnfolder]: For 112328/112341 co-relation queries the response was YES. [2022-01-19 13:09:46,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24493 conditions, 3095 events. 896/3095 cut-off events. For 112328/112341 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 24684 event pairs, 398 based on Foata normal form. 1/2994 useless extension candidates. Maximal degree in co-relation 24158. Up to 875 conditions per place. [2022-01-19 13:09:46,080 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 428 selfloop transitions, 160 changer transitions 59/788 dead transitions. [2022-01-19 13:09:46,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 890 places, 788 transitions, 18580 flow [2022-01-19 13:09:46,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:09:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:09:46,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4507 transitions. [2022-01-19 13:09:46,083 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7664965986394557 [2022-01-19 13:09:46,083 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4507 transitions. [2022-01-19 13:09:46,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4507 transitions. [2022-01-19 13:09:46,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:46,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4507 transitions. [2022-01-19 13:09:46,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.96428571428572) internal successors, (4507), 28 states have internal predecessors, (4507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:46,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:46,089 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:46,089 INFO L186 Difference]: Start difference. First operand has 877 places, 689 transitions, 15179 flow. Second operand 28 states and 4507 transitions. [2022-01-19 13:09:46,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 890 places, 788 transitions, 18580 flow [2022-01-19 13:09:47,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 788 transitions, 18221 flow, removed 60 selfloop flow, removed 12 redundant places. [2022-01-19 13:09:47,156 INFO L242 Difference]: Finished difference. Result has 890 places, 697 transitions, 15444 flow [2022-01-19 13:09:47,156 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14872, PETRI_DIFFERENCE_MINUEND_PLACES=851, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=15444, PETRI_PLACES=890, PETRI_TRANSITIONS=697} [2022-01-19 13:09:47,156 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 703 predicate places. [2022-01-19 13:09:47,156 INFO L470 AbstractCegarLoop]: Abstraction has has 890 places, 697 transitions, 15444 flow [2022-01-19 13:09:47,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:47,157 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:47,157 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:47,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-01-19 13:09:47,157 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:47,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:47,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1444696966, now seen corresponding path program 181 times [2022-01-19 13:09:47,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:47,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108293210] [2022-01-19 13:09:47,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:47,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:47,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:47,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:47,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108293210] [2022-01-19 13:09:47,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108293210] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:47,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:47,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:47,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859830248] [2022-01-19 13:09:47,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:47,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:47,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:47,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:47,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:47,267 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:47,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 890 places, 697 transitions, 15444 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:47,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:47,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:47,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:48,995 INFO L129 PetriNetUnfolder]: 907/3167 cut-off events. [2022-01-19 13:09:48,995 INFO L130 PetriNetUnfolder]: For 115710/115723 co-relation queries the response was YES. [2022-01-19 13:09:49,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24979 conditions, 3167 events. 907/3167 cut-off events. For 115710/115723 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 25561 event pairs, 392 based on Foata normal form. 1/3069 useless extension candidates. Maximal degree in co-relation 24640. Up to 875 conditions per place. [2022-01-19 13:09:49,078 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 444 selfloop transitions, 166 changer transitions 72/823 dead transitions. [2022-01-19 13:09:49,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 912 places, 823 transitions, 19729 flow [2022-01-19 13:09:49,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:09:49,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:09:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5769 transitions. [2022-01-19 13:09:49,081 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763095238095238 [2022-01-19 13:09:49,081 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5769 transitions. [2022-01-19 13:09:49,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5769 transitions. [2022-01-19 13:09:49,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:49,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5769 transitions. [2022-01-19 13:09:49,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.25) internal successors, (5769), 36 states have internal predecessors, (5769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:49,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:49,089 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:49,089 INFO L186 Difference]: Start difference. First operand has 890 places, 697 transitions, 15444 flow. Second operand 36 states and 5769 transitions. [2022-01-19 13:09:49,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 912 places, 823 transitions, 19729 flow [2022-01-19 13:09:50,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 897 places, 823 transitions, 19259 flow, removed 77 selfloop flow, removed 15 redundant places. [2022-01-19 13:09:50,223 INFO L242 Difference]: Finished difference. Result has 920 places, 713 transitions, 16064 flow [2022-01-19 13:09:50,223 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15091, PETRI_DIFFERENCE_MINUEND_PLACES=862, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=16064, PETRI_PLACES=920, PETRI_TRANSITIONS=713} [2022-01-19 13:09:50,224 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 733 predicate places. [2022-01-19 13:09:50,224 INFO L470 AbstractCegarLoop]: Abstraction has has 920 places, 713 transitions, 16064 flow [2022-01-19 13:09:50,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:50,224 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:50,224 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:50,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-01-19 13:09:50,224 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:50,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:50,225 INFO L85 PathProgramCache]: Analyzing trace with hash -605739498, now seen corresponding path program 182 times [2022-01-19 13:09:50,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:50,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804248797] [2022-01-19 13:09:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:50,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:50,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:50,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804248797] [2022-01-19 13:09:50,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804248797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:50,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:50,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:50,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059288198] [2022-01-19 13:09:50,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:50,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:50,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:50,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:50,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:50,327 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:50,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 920 places, 713 transitions, 16064 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:50,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:50,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:50,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:51,901 INFO L129 PetriNetUnfolder]: 918/3178 cut-off events. [2022-01-19 13:09:51,901 INFO L130 PetriNetUnfolder]: For 116623/116636 co-relation queries the response was YES. [2022-01-19 13:09:51,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25437 conditions, 3178 events. 918/3178 cut-off events. For 116623/116636 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 25580 event pairs, 391 based on Foata normal form. 1/3077 useless extension candidates. Maximal degree in co-relation 25085. Up to 876 conditions per place. [2022-01-19 13:09:51,989 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 407 selfloop transitions, 217 changer transitions 61/826 dead transitions. [2022-01-19 13:09:51,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 927 places, 826 transitions, 20016 flow [2022-01-19 13:09:51,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:09:51,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:09:51,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 13:09:51,991 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 13:09:51,992 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 13:09:51,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 13:09:51,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:51,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 13:09:51,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:51,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:51,997 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:51,997 INFO L186 Difference]: Start difference. First operand has 920 places, 713 transitions, 16064 flow. Second operand 30 states and 4817 transitions. [2022-01-19 13:09:51,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 927 places, 826 transitions, 20016 flow [2022-01-19 13:09:53,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 902 places, 826 transitions, 19412 flow, removed 105 selfloop flow, removed 25 redundant places. [2022-01-19 13:09:53,136 INFO L242 Difference]: Finished difference. Result has 917 places, 730 transitions, 16618 flow [2022-01-19 13:09:53,136 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15607, PETRI_DIFFERENCE_MINUEND_PLACES=873, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16618, PETRI_PLACES=917, PETRI_TRANSITIONS=730} [2022-01-19 13:09:53,136 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 730 predicate places. [2022-01-19 13:09:53,136 INFO L470 AbstractCegarLoop]: Abstraction has has 917 places, 730 transitions, 16618 flow [2022-01-19 13:09:53,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:53,137 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:53,137 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:53,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-01-19 13:09:53,137 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:53,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:53,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1687932682, now seen corresponding path program 183 times [2022-01-19 13:09:53,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:53,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144727906] [2022-01-19 13:09:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:53,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:53,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:53,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144727906] [2022-01-19 13:09:53,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144727906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:53,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:53,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:53,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249450132] [2022-01-19 13:09:53,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:53,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:53,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:53,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:53,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:53,240 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:53,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 917 places, 730 transitions, 16618 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:53,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:53,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:53,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:54,980 INFO L129 PetriNetUnfolder]: 937/3260 cut-off events. [2022-01-19 13:09:54,981 INFO L130 PetriNetUnfolder]: For 118781/118794 co-relation queries the response was YES. [2022-01-19 13:09:55,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26038 conditions, 3260 events. 937/3260 cut-off events. For 118781/118794 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 26610 event pairs, 398 based on Foata normal form. 1/3159 useless extension candidates. Maximal degree in co-relation 25690. Up to 875 conditions per place. [2022-01-19 13:09:55,071 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 446 selfloop transitions, 200 changer transitions 68/855 dead transitions. [2022-01-19 13:09:55,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 938 places, 855 transitions, 20969 flow [2022-01-19 13:09:55,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:09:55,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:09:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5924 transitions. [2022-01-19 13:09:55,074 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624195624195624 [2022-01-19 13:09:55,074 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5924 transitions. [2022-01-19 13:09:55,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5924 transitions. [2022-01-19 13:09:55,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:55,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5924 transitions. [2022-01-19 13:09:55,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1081081081081) internal successors, (5924), 37 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:55,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:55,081 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:55,081 INFO L186 Difference]: Start difference. First operand has 917 places, 730 transitions, 16618 flow. Second operand 37 states and 5924 transitions. [2022-01-19 13:09:55,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 938 places, 855 transitions, 20969 flow [2022-01-19 13:09:56,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 855 transitions, 20630 flow, removed 79 selfloop flow, removed 11 redundant places. [2022-01-19 13:09:56,243 INFO L242 Difference]: Finished difference. Result has 950 places, 748 transitions, 17461 flow [2022-01-19 13:09:56,244 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16348, PETRI_DIFFERENCE_MINUEND_PLACES=891, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=17461, PETRI_PLACES=950, PETRI_TRANSITIONS=748} [2022-01-19 13:09:56,244 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 763 predicate places. [2022-01-19 13:09:56,244 INFO L470 AbstractCegarLoop]: Abstraction has has 950 places, 748 transitions, 17461 flow [2022-01-19 13:09:56,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:56,244 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:56,244 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:56,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-01-19 13:09:56,244 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:56,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:56,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1628238862, now seen corresponding path program 184 times [2022-01-19 13:09:56,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:56,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521545634] [2022-01-19 13:09:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:56,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:56,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:56,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:56,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521545634] [2022-01-19 13:09:56,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521545634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:56,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:56,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:56,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095456571] [2022-01-19 13:09:56,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:56,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:56,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:56,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:56,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:56,374 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:56,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 950 places, 748 transitions, 17461 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:56,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:56,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:56,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:09:58,107 INFO L129 PetriNetUnfolder]: 938/3247 cut-off events. [2022-01-19 13:09:58,107 INFO L130 PetriNetUnfolder]: For 122718/122731 co-relation queries the response was YES. [2022-01-19 13:09:58,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26331 conditions, 3247 events. 938/3247 cut-off events. For 122718/122731 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 26337 event pairs, 403 based on Foata normal form. 1/3142 useless extension candidates. Maximal degree in co-relation 25969. Up to 876 conditions per place. [2022-01-19 13:09:58,197 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 463 selfloop transitions, 185 changer transitions 58/847 dead transitions. [2022-01-19 13:09:58,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 847 transitions, 21174 flow [2022-01-19 13:09:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:09:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:09:58,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4822 transitions. [2022-01-19 13:09:58,199 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653968253968254 [2022-01-19 13:09:58,199 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4822 transitions. [2022-01-19 13:09:58,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4822 transitions. [2022-01-19 13:09:58,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:09:58,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4822 transitions. [2022-01-19 13:09:58,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.73333333333332) internal successors, (4822), 30 states have internal predecessors, (4822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:58,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:58,205 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:58,205 INFO L186 Difference]: Start difference. First operand has 950 places, 748 transitions, 17461 flow. Second operand 30 states and 4822 transitions. [2022-01-19 13:09:58,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 847 transitions, 21174 flow [2022-01-19 13:09:59,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 936 places, 847 transitions, 20759 flow, removed 66 selfloop flow, removed 20 redundant places. [2022-01-19 13:09:59,378 INFO L242 Difference]: Finished difference. Result has 949 places, 761 transitions, 17918 flow [2022-01-19 13:09:59,378 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17094, PETRI_DIFFERENCE_MINUEND_PLACES=907, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17918, PETRI_PLACES=949, PETRI_TRANSITIONS=761} [2022-01-19 13:09:59,378 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 762 predicate places. [2022-01-19 13:09:59,378 INFO L470 AbstractCegarLoop]: Abstraction has has 949 places, 761 transitions, 17918 flow [2022-01-19 13:09:59,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:59,379 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:09:59,379 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:09:59,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-01-19 13:09:59,379 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:09:59,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:09:59,379 INFO L85 PathProgramCache]: Analyzing trace with hash 628529562, now seen corresponding path program 185 times [2022-01-19 13:09:59,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:09:59,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587306095] [2022-01-19 13:09:59,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:09:59,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:09:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:09:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:09:59,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:09:59,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587306095] [2022-01-19 13:09:59,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587306095] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:09:59,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:09:59,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:09:59,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533276774] [2022-01-19 13:09:59,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:09:59,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:09:59,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:09:59,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:09:59,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:09:59,489 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:09:59,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 949 places, 761 transitions, 17918 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:09:59,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:09:59,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:09:59,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:01,111 INFO L129 PetriNetUnfolder]: 917/3182 cut-off events. [2022-01-19 13:10:01,111 INFO L130 PetriNetUnfolder]: For 121848/121861 co-relation queries the response was YES. [2022-01-19 13:10:01,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25732 conditions, 3182 events. 917/3182 cut-off events. For 121848/121861 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 25607 event pairs, 390 based on Foata normal form. 1/3080 useless extension candidates. Maximal degree in co-relation 25373. Up to 871 conditions per place. [2022-01-19 13:10:01,200 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 449 selfloop transitions, 173 changer transitions 63/826 dead transitions. [2022-01-19 13:10:01,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 963 places, 826 transitions, 20521 flow [2022-01-19 13:10:01,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:10:01,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:10:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-01-19 13:10:01,203 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-01-19 13:10:01,203 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-01-19 13:10:01,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-01-19 13:10:01,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:01,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-01-19 13:10:01,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:01,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:01,208 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:01,209 INFO L186 Difference]: Start difference. First operand has 949 places, 761 transitions, 17918 flow. Second operand 30 states and 4809 transitions. [2022-01-19 13:10:01,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 963 places, 826 transitions, 20521 flow [2022-01-19 13:10:02,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 951 places, 826 transitions, 20172 flow, removed 75 selfloop flow, removed 12 redundant places. [2022-01-19 13:10:02,422 INFO L242 Difference]: Finished difference. Result has 962 places, 734 transitions, 17162 flow [2022-01-19 13:10:02,423 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17614, PETRI_DIFFERENCE_MINUEND_PLACES=922, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17162, PETRI_PLACES=962, PETRI_TRANSITIONS=734} [2022-01-19 13:10:02,423 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 775 predicate places. [2022-01-19 13:10:02,423 INFO L470 AbstractCegarLoop]: Abstraction has has 962 places, 734 transitions, 17162 flow [2022-01-19 13:10:02,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:02,424 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:02,424 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:02,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2022-01-19 13:10:02,424 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:02,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:02,424 INFO L85 PathProgramCache]: Analyzing trace with hash -52605164, now seen corresponding path program 186 times [2022-01-19 13:10:02,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:02,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965214505] [2022-01-19 13:10:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:02,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:02,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:02,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:02,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965214505] [2022-01-19 13:10:02,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965214505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:02,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:02,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:02,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405315269] [2022-01-19 13:10:02,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:02,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:02,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:02,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:02,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:02,570 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:02,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 962 places, 734 transitions, 17162 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:02,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:02,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:02,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:04,261 INFO L129 PetriNetUnfolder]: 912/3175 cut-off events. [2022-01-19 13:10:04,261 INFO L130 PetriNetUnfolder]: For 118669/118682 co-relation queries the response was YES. [2022-01-19 13:10:04,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25744 conditions, 3175 events. 912/3175 cut-off events. For 118669/118682 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 25635 event pairs, 396 based on Foata normal form. 1/3072 useless extension candidates. Maximal degree in co-relation 25382. Up to 869 conditions per place. [2022-01-19 13:10:04,354 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 451 selfloop transitions, 171 changer transitions 59/822 dead transitions. [2022-01-19 13:10:04,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 955 places, 822 transitions, 20509 flow [2022-01-19 13:10:04,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:10:04,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:10:04,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2022-01-19 13:10:04,357 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2022-01-19 13:10:04,357 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2022-01-19 13:10:04,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2022-01-19 13:10:04,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:04,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2022-01-19 13:10:04,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:04,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:04,363 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:04,363 INFO L186 Difference]: Start difference. First operand has 962 places, 734 transitions, 17162 flow. Second operand 29 states and 4664 transitions. [2022-01-19 13:10:04,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 955 places, 822 transitions, 20509 flow [2022-01-19 13:10:05,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 925 places, 822 transitions, 19733 flow, removed 47 selfloop flow, removed 30 redundant places. [2022-01-19 13:10:05,580 INFO L242 Difference]: Finished difference. Result has 938 places, 736 transitions, 16929 flow [2022-01-19 13:10:05,580 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16519, PETRI_DIFFERENCE_MINUEND_PLACES=897, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=16929, PETRI_PLACES=938, PETRI_TRANSITIONS=736} [2022-01-19 13:10:05,581 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 751 predicate places. [2022-01-19 13:10:05,581 INFO L470 AbstractCegarLoop]: Abstraction has has 938 places, 736 transitions, 16929 flow [2022-01-19 13:10:05,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:05,581 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:05,581 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:05,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2022-01-19 13:10:05,581 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:05,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:05,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1115390356, now seen corresponding path program 187 times [2022-01-19 13:10:05,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:05,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15123864] [2022-01-19 13:10:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:05,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:05,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:05,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15123864] [2022-01-19 13:10:05,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15123864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:05,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:05,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:05,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773584177] [2022-01-19 13:10:05,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:05,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:05,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:05,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:05,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:05,688 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:05,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 938 places, 736 transitions, 16929 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:05,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:05,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:05,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:07,345 INFO L129 PetriNetUnfolder]: 907/3156 cut-off events. [2022-01-19 13:10:07,345 INFO L130 PetriNetUnfolder]: For 113399/113412 co-relation queries the response was YES. [2022-01-19 13:10:07,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25265 conditions, 3156 events. 907/3156 cut-off events. For 113399/113412 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 25408 event pairs, 394 based on Foata normal form. 1/3054 useless extension candidates. Maximal degree in co-relation 24908. Up to 871 conditions per place. [2022-01-19 13:10:07,432 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 440 selfloop transitions, 188 changer transitions 59/828 dead transitions. [2022-01-19 13:10:07,433 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 953 places, 828 transitions, 20241 flow [2022-01-19 13:10:07,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:10:07,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:10:07,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-01-19 13:10:07,435 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-01-19 13:10:07,435 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-01-19 13:10:07,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-01-19 13:10:07,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:07,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-01-19 13:10:07,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:07,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:07,442 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:07,442 INFO L186 Difference]: Start difference. First operand has 938 places, 736 transitions, 16929 flow. Second operand 30 states and 4820 transitions. [2022-01-19 13:10:07,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 953 places, 828 transitions, 20241 flow [2022-01-19 13:10:08,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 939 places, 828 transitions, 19887 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-01-19 13:10:08,673 INFO L242 Difference]: Finished difference. Result has 953 places, 740 transitions, 17116 flow [2022-01-19 13:10:08,673 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16616, PETRI_DIFFERENCE_MINUEND_PLACES=910, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17116, PETRI_PLACES=953, PETRI_TRANSITIONS=740} [2022-01-19 13:10:08,674 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 766 predicate places. [2022-01-19 13:10:08,674 INFO L470 AbstractCegarLoop]: Abstraction has has 953 places, 740 transitions, 17116 flow [2022-01-19 13:10:08,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:08,674 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:08,674 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:08,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2022-01-19 13:10:08,674 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:08,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:08,675 INFO L85 PathProgramCache]: Analyzing trace with hash -689926010, now seen corresponding path program 188 times [2022-01-19 13:10:08,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:08,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695079141] [2022-01-19 13:10:08,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:08,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:08,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:08,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:08,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695079141] [2022-01-19 13:10:08,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695079141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:08,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:08,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:08,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814293588] [2022-01-19 13:10:08,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:08,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:08,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:08,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:08,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:08,781 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:08,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 953 places, 740 transitions, 17116 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:08,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:08,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:08,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:10,592 INFO L129 PetriNetUnfolder]: 901/3166 cut-off events. [2022-01-19 13:10:10,592 INFO L130 PetriNetUnfolder]: For 114046/114059 co-relation queries the response was YES. [2022-01-19 13:10:10,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25240 conditions, 3166 events. 901/3166 cut-off events. For 114046/114059 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 25646 event pairs, 390 based on Foata normal form. 1/3065 useless extension candidates. Maximal degree in co-relation 24878. Up to 870 conditions per place. [2022-01-19 13:10:10,680 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 408 selfloop transitions, 212 changer transitions 73/834 dead transitions. [2022-01-19 13:10:10,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 975 places, 834 transitions, 20580 flow [2022-01-19 13:10:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:10:10,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:10:10,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6073 transitions. [2022-01-19 13:10:10,683 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610275689223057 [2022-01-19 13:10:10,683 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6073 transitions. [2022-01-19 13:10:10,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6073 transitions. [2022-01-19 13:10:10,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:10,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6073 transitions. [2022-01-19 13:10:10,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.81578947368422) internal successors, (6073), 38 states have internal predecessors, (6073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:10,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:10,693 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:10,693 INFO L186 Difference]: Start difference. First operand has 953 places, 740 transitions, 17116 flow. Second operand 38 states and 6073 transitions. [2022-01-19 13:10:10,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 975 places, 834 transitions, 20580 flow [2022-01-19 13:10:11,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 960 places, 834 transitions, 20174 flow, removed 60 selfloop flow, removed 15 redundant places. [2022-01-19 13:10:11,902 INFO L242 Difference]: Finished difference. Result has 977 places, 735 transitions, 17150 flow [2022-01-19 13:10:11,902 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16767, PETRI_DIFFERENCE_MINUEND_PLACES=923, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=17150, PETRI_PLACES=977, PETRI_TRANSITIONS=735} [2022-01-19 13:10:11,903 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 790 predicate places. [2022-01-19 13:10:11,903 INFO L470 AbstractCegarLoop]: Abstraction has has 977 places, 735 transitions, 17150 flow [2022-01-19 13:10:11,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:11,903 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:11,903 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:11,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2022-01-19 13:10:11,903 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:11,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:11,903 INFO L85 PathProgramCache]: Analyzing trace with hash -572136264, now seen corresponding path program 189 times [2022-01-19 13:10:11,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:11,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346260384] [2022-01-19 13:10:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:11,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:12,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:12,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346260384] [2022-01-19 13:10:12,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346260384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:12,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:12,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:12,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342914507] [2022-01-19 13:10:12,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:12,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:12,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:12,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:12,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:12,015 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:12,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 977 places, 735 transitions, 17150 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:12,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:12,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:12,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:13,620 INFO L129 PetriNetUnfolder]: 878/3089 cut-off events. [2022-01-19 13:10:13,620 INFO L130 PetriNetUnfolder]: For 114174/114187 co-relation queries the response was YES. [2022-01-19 13:10:13,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24622 conditions, 3089 events. 878/3089 cut-off events. For 114174/114187 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 24764 event pairs, 388 based on Foata normal form. 1/2990 useless extension candidates. Maximal degree in co-relation 24254. Up to 870 conditions per place. [2022-01-19 13:10:13,710 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 399 selfloop transitions, 194 changer transitions 62/796 dead transitions. [2022-01-19 13:10:13,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 980 places, 796 transitions, 19663 flow [2022-01-19 13:10:13,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:10:13,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:10:13,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4492 transitions. [2022-01-19 13:10:13,712 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7639455782312925 [2022-01-19 13:10:13,712 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4492 transitions. [2022-01-19 13:10:13,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4492 transitions. [2022-01-19 13:10:13,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:13,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4492 transitions. [2022-01-19 13:10:13,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.42857142857142) internal successors, (4492), 28 states have internal predecessors, (4492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:13,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:13,718 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:13,718 INFO L186 Difference]: Start difference. First operand has 977 places, 735 transitions, 17150 flow. Second operand 28 states and 4492 transitions. [2022-01-19 13:10:13,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 980 places, 796 transitions, 19663 flow [2022-01-19 13:10:14,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 953 places, 796 transitions, 19185 flow, removed 58 selfloop flow, removed 27 redundant places. [2022-01-19 13:10:14,893 INFO L242 Difference]: Finished difference. Result has 962 places, 710 transitions, 16393 flow [2022-01-19 13:10:14,894 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16713, PETRI_DIFFERENCE_MINUEND_PLACES=926, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=16393, PETRI_PLACES=962, PETRI_TRANSITIONS=710} [2022-01-19 13:10:14,894 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 775 predicate places. [2022-01-19 13:10:14,894 INFO L470 AbstractCegarLoop]: Abstraction has has 962 places, 710 transitions, 16393 flow [2022-01-19 13:10:14,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:14,894 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:14,894 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:14,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2022-01-19 13:10:14,894 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:14,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:14,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1619313512, now seen corresponding path program 190 times [2022-01-19 13:10:14,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:14,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882200039] [2022-01-19 13:10:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:14,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:15,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:15,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882200039] [2022-01-19 13:10:15,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882200039] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:15,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:15,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:15,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373660376] [2022-01-19 13:10:15,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:15,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:15,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:15,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:15,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:15,003 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:15,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 962 places, 710 transitions, 16393 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:15,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:15,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:15,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:16,528 INFO L129 PetriNetUnfolder]: 871/3067 cut-off events. [2022-01-19 13:10:16,529 INFO L130 PetriNetUnfolder]: For 108573/108586 co-relation queries the response was YES. [2022-01-19 13:10:16,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24362 conditions, 3067 events. 871/3067 cut-off events. For 108573/108586 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 24532 event pairs, 393 based on Foata normal form. 1/2968 useless extension candidates. Maximal degree in co-relation 24007. Up to 870 conditions per place. [2022-01-19 13:10:16,614 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 418 selfloop transitions, 162 changer transitions 60/781 dead transitions. [2022-01-19 13:10:16,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 958 places, 781 transitions, 19231 flow [2022-01-19 13:10:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:10:16,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:10:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-01-19 13:10:16,616 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-01-19 13:10:16,616 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-01-19 13:10:16,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-01-19 13:10:16,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:16,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-01-19 13:10:16,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:16,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:16,622 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:16,622 INFO L186 Difference]: Start difference. First operand has 962 places, 710 transitions, 16393 flow. Second operand 30 states and 4809 transitions. [2022-01-19 13:10:16,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 958 places, 781 transitions, 19231 flow [2022-01-19 13:10:17,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 921 places, 781 transitions, 18142 flow, removed 33 selfloop flow, removed 37 redundant places. [2022-01-19 13:10:17,688 INFO L242 Difference]: Finished difference. Result has 933 places, 697 transitions, 15478 flow [2022-01-19 13:10:17,689 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15417, PETRI_DIFFERENCE_MINUEND_PLACES=892, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15478, PETRI_PLACES=933, PETRI_TRANSITIONS=697} [2022-01-19 13:10:17,689 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 746 predicate places. [2022-01-19 13:10:17,689 INFO L470 AbstractCegarLoop]: Abstraction has has 933 places, 697 transitions, 15478 flow [2022-01-19 13:10:17,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:17,689 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:17,689 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:17,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-01-19 13:10:17,690 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:17,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:17,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1415123752, now seen corresponding path program 191 times [2022-01-19 13:10:17,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:17,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554008677] [2022-01-19 13:10:17,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:17,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:17,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:17,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554008677] [2022-01-19 13:10:17,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554008677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:17,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:17,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:17,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918885165] [2022-01-19 13:10:17,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:17,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:17,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:17,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:17,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:17,795 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:17,796 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 933 places, 697 transitions, 15478 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:17,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:17,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:17,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:19,286 INFO L129 PetriNetUnfolder]: 846/2985 cut-off events. [2022-01-19 13:10:19,287 INFO L130 PetriNetUnfolder]: For 100417/100430 co-relation queries the response was YES. [2022-01-19 13:10:19,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23066 conditions, 2985 events. 846/2985 cut-off events. For 100417/100430 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 23641 event pairs, 387 based on Foata normal form. 1/2887 useless extension candidates. Maximal degree in co-relation 22721. Up to 864 conditions per place. [2022-01-19 13:10:19,368 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 402 selfloop transitions, 140 changer transitions 62/745 dead transitions. [2022-01-19 13:10:19,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 934 places, 745 transitions, 17445 flow [2022-01-19 13:10:19,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:10:19,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:10:19,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4643 transitions. [2022-01-19 13:10:19,371 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623973727422003 [2022-01-19 13:10:19,371 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4643 transitions. [2022-01-19 13:10:19,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4643 transitions. [2022-01-19 13:10:19,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:19,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4643 transitions. [2022-01-19 13:10:19,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.10344827586206) internal successors, (4643), 29 states have internal predecessors, (4643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:19,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:19,377 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:19,377 INFO L186 Difference]: Start difference. First operand has 933 places, 697 transitions, 15478 flow. Second operand 29 states and 4643 transitions. [2022-01-19 13:10:19,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 934 places, 745 transitions, 17445 flow [2022-01-19 13:10:20,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 903 places, 745 transitions, 16940 flow, removed 28 selfloop flow, removed 31 redundant places. [2022-01-19 13:10:20,407 INFO L242 Difference]: Finished difference. Result has 910 places, 659 transitions, 14269 flow [2022-01-19 13:10:20,408 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15010, PETRI_DIFFERENCE_MINUEND_PLACES=875, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=14269, PETRI_PLACES=910, PETRI_TRANSITIONS=659} [2022-01-19 13:10:20,408 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 723 predicate places. [2022-01-19 13:10:20,408 INFO L470 AbstractCegarLoop]: Abstraction has has 910 places, 659 transitions, 14269 flow [2022-01-19 13:10:20,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:20,408 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:20,408 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:20,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-01-19 13:10:20,408 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:20,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:20,409 INFO L85 PathProgramCache]: Analyzing trace with hash 721873112, now seen corresponding path program 192 times [2022-01-19 13:10:20,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:20,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040287393] [2022-01-19 13:10:20,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:20,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:20,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:20,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:20,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040287393] [2022-01-19 13:10:20,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040287393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:20,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:20,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:20,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343524985] [2022-01-19 13:10:20,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:20,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:20,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:20,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:20,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:20,516 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:20,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 659 transitions, 14269 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:20,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:20,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:20,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:22,194 INFO L129 PetriNetUnfolder]: 884/3087 cut-off events. [2022-01-19 13:10:22,194 INFO L130 PetriNetUnfolder]: For 100641/100654 co-relation queries the response was YES. [2022-01-19 13:10:22,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23977 conditions, 3087 events. 884/3087 cut-off events. For 100641/100654 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 24700 event pairs, 335 based on Foata normal form. 1/2998 useless extension candidates. Maximal degree in co-relation 23645. Up to 864 conditions per place. [2022-01-19 13:10:22,277 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 336 selfloop transitions, 282 changer transitions 76/835 dead transitions. [2022-01-19 13:10:22,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 903 places, 835 transitions, 20379 flow [2022-01-19 13:10:22,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:10:22,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:10:22,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6080 transitions. [2022-01-19 13:10:22,280 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 13:10:22,280 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6080 transitions. [2022-01-19 13:10:22,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6080 transitions. [2022-01-19 13:10:22,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:22,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6080 transitions. [2022-01-19 13:10:22,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.0) internal successors, (6080), 38 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:22,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:22,287 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:22,287 INFO L186 Difference]: Start difference. First operand has 910 places, 659 transitions, 14269 flow. Second operand 38 states and 6080 transitions. [2022-01-19 13:10:22,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 903 places, 835 transitions, 20379 flow [2022-01-19 13:10:23,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 867 places, 835 transitions, 19582 flow, removed 28 selfloop flow, removed 36 redundant places. [2022-01-19 13:10:23,301 INFO L242 Difference]: Finished difference. Result has 892 places, 683 transitions, 15049 flow [2022-01-19 13:10:23,301 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13579, PETRI_DIFFERENCE_MINUEND_PLACES=830, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=15049, PETRI_PLACES=892, PETRI_TRANSITIONS=683} [2022-01-19 13:10:23,301 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 705 predicate places. [2022-01-19 13:10:23,302 INFO L470 AbstractCegarLoop]: Abstraction has has 892 places, 683 transitions, 15049 flow [2022-01-19 13:10:23,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:23,302 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:23,302 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:23,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2022-01-19 13:10:23,302 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:23,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:23,302 INFO L85 PathProgramCache]: Analyzing trace with hash 581310738, now seen corresponding path program 193 times [2022-01-19 13:10:23,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:23,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353730601] [2022-01-19 13:10:23,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:23,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:23,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:23,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353730601] [2022-01-19 13:10:23,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353730601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:23,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:23,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:23,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120323462] [2022-01-19 13:10:23,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:23,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:23,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:23,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:23,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:23,421 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:23,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 683 transitions, 15049 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:23,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:23,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:23,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:25,032 INFO L129 PetriNetUnfolder]: 886/3095 cut-off events. [2022-01-19 13:10:25,033 INFO L130 PetriNetUnfolder]: For 103717/103730 co-relation queries the response was YES. [2022-01-19 13:10:25,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24195 conditions, 3095 events. 886/3095 cut-off events. For 103717/103730 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 24718 event pairs, 398 based on Foata normal form. 1/2994 useless extension candidates. Maximal degree in co-relation 23861. Up to 864 conditions per place. [2022-01-19 13:10:25,115 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 408 selfloop transitions, 174 changer transitions 54/777 dead transitions. [2022-01-19 13:10:25,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 896 places, 777 transitions, 18641 flow [2022-01-19 13:10:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:10:25,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:10:25,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4671 transitions. [2022-01-19 13:10:25,117 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7669950738916256 [2022-01-19 13:10:25,117 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4671 transitions. [2022-01-19 13:10:25,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4671 transitions. [2022-01-19 13:10:25,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:25,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4671 transitions. [2022-01-19 13:10:25,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.06896551724137) internal successors, (4671), 29 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:25,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:25,123 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:25,123 INFO L186 Difference]: Start difference. First operand has 892 places, 683 transitions, 15049 flow. Second operand 29 states and 4671 transitions. [2022-01-19 13:10:25,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 896 places, 777 transitions, 18641 flow [2022-01-19 13:10:26,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 777 transitions, 18439 flow, removed 72 selfloop flow, removed 18 redundant places. [2022-01-19 13:10:26,125 INFO L242 Difference]: Finished difference. Result has 892 places, 695 transitions, 15637 flow [2022-01-19 13:10:26,126 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14880, PETRI_DIFFERENCE_MINUEND_PLACES=850, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15637, PETRI_PLACES=892, PETRI_TRANSITIONS=695} [2022-01-19 13:10:26,126 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 705 predicate places. [2022-01-19 13:10:26,126 INFO L470 AbstractCegarLoop]: Abstraction has has 892 places, 695 transitions, 15637 flow [2022-01-19 13:10:26,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:26,126 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:26,126 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:26,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2022-01-19 13:10:26,126 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:26,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:26,127 INFO L85 PathProgramCache]: Analyzing trace with hash 773425324, now seen corresponding path program 194 times [2022-01-19 13:10:26,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:26,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515909637] [2022-01-19 13:10:26,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:26,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:26,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:26,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515909637] [2022-01-19 13:10:26,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515909637] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:26,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:26,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:26,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017179696] [2022-01-19 13:10:26,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:26,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:26,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:26,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:26,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:26,243 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:26,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 695 transitions, 15637 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:26,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:26,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:26,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:27,850 INFO L129 PetriNetUnfolder]: 884/3098 cut-off events. [2022-01-19 13:10:27,850 INFO L130 PetriNetUnfolder]: For 107923/107936 co-relation queries the response was YES. [2022-01-19 13:10:27,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24436 conditions, 3098 events. 884/3098 cut-off events. For 107923/107936 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 24849 event pairs, 381 based on Foata normal form. 1/2998 useless extension candidates. Maximal degree in co-relation 24105. Up to 865 conditions per place. [2022-01-19 13:10:27,935 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 444 selfloop transitions, 144 changer transitions 57/786 dead transitions. [2022-01-19 13:10:27,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 786 transitions, 19367 flow [2022-01-19 13:10:27,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:10:27,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:10:27,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4518 transitions. [2022-01-19 13:10:27,938 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7683673469387755 [2022-01-19 13:10:27,938 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4518 transitions. [2022-01-19 13:10:27,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4518 transitions. [2022-01-19 13:10:27,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:27,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4518 transitions. [2022-01-19 13:10:27,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.35714285714286) internal successors, (4518), 28 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:27,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:27,943 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:27,944 INFO L186 Difference]: Start difference. First operand has 892 places, 695 transitions, 15637 flow. Second operand 28 states and 4518 transitions. [2022-01-19 13:10:27,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 786 transitions, 19367 flow [2022-01-19 13:10:28,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 786 transitions, 18946 flow, removed 95 selfloop flow, removed 13 redundant places. [2022-01-19 13:10:28,964 INFO L242 Difference]: Finished difference. Result has 904 places, 703 transitions, 15859 flow [2022-01-19 13:10:28,965 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15260, PETRI_DIFFERENCE_MINUEND_PLACES=865, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=15859, PETRI_PLACES=904, PETRI_TRANSITIONS=703} [2022-01-19 13:10:28,965 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 717 predicate places. [2022-01-19 13:10:28,965 INFO L470 AbstractCegarLoop]: Abstraction has has 904 places, 703 transitions, 15859 flow [2022-01-19 13:10:28,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:28,965 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:28,965 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:28,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2022-01-19 13:10:28,965 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:28,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:28,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1767172388, now seen corresponding path program 195 times [2022-01-19 13:10:28,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:28,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930277965] [2022-01-19 13:10:28,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:28,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:29,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:29,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930277965] [2022-01-19 13:10:29,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930277965] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:29,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:29,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:29,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052719249] [2022-01-19 13:10:29,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:29,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:29,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:29,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:29,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:29,090 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:29,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 904 places, 703 transitions, 15859 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:29,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:29,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:29,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:30,672 INFO L129 PetriNetUnfolder]: 862/3022 cut-off events. [2022-01-19 13:10:30,672 INFO L130 PetriNetUnfolder]: For 105669/105682 co-relation queries the response was YES. [2022-01-19 13:10:30,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23844 conditions, 3022 events. 862/3022 cut-off events. For 105669/105682 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 23997 event pairs, 366 based on Foata normal form. 1/2922 useless extension candidates. Maximal degree in co-relation 23509. Up to 859 conditions per place. [2022-01-19 13:10:30,748 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 438 selfloop transitions, 126 changer transitions 60/765 dead transitions. [2022-01-19 13:10:30,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 920 places, 765 transitions, 18880 flow [2022-01-19 13:10:30,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:10:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:10:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-01-19 13:10:30,751 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-01-19 13:10:30,751 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-01-19 13:10:30,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-01-19 13:10:30,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:30,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-01-19 13:10:30,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:30,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:30,756 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:30,757 INFO L186 Difference]: Start difference. First operand has 904 places, 703 transitions, 15859 flow. Second operand 30 states and 4820 transitions. [2022-01-19 13:10:30,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 920 places, 765 transitions, 18880 flow [2022-01-19 13:10:31,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 903 places, 765 transitions, 18339 flow, removed 104 selfloop flow, removed 17 redundant places. [2022-01-19 13:10:31,788 INFO L242 Difference]: Finished difference. Result has 914 places, 680 transitions, 15047 flow [2022-01-19 13:10:31,788 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15392, PETRI_DIFFERENCE_MINUEND_PLACES=874, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15047, PETRI_PLACES=914, PETRI_TRANSITIONS=680} [2022-01-19 13:10:31,789 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 727 predicate places. [2022-01-19 13:10:31,789 INFO L470 AbstractCegarLoop]: Abstraction has has 914 places, 680 transitions, 15047 flow [2022-01-19 13:10:31,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:31,789 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:31,789 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:31,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2022-01-19 13:10:31,789 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:31,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:31,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1904133590, now seen corresponding path program 196 times [2022-01-19 13:10:31,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:31,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154117538] [2022-01-19 13:10:31,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:31,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:31,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:31,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154117538] [2022-01-19 13:10:31,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154117538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:31,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:31,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:31,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744171581] [2022-01-19 13:10:31,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:31,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:31,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:31,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:31,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:31,900 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:31,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 914 places, 680 transitions, 15047 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:31,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:31,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:31,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:33,449 INFO L129 PetriNetUnfolder]: 868/3042 cut-off events. [2022-01-19 13:10:33,449 INFO L130 PetriNetUnfolder]: For 102835/102848 co-relation queries the response was YES. [2022-01-19 13:10:33,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24205 conditions, 3042 events. 868/3042 cut-off events. For 102835/102848 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 24328 event pairs, 370 based on Foata normal form. 1/2941 useless extension candidates. Maximal degree in co-relation 23869. Up to 860 conditions per place. [2022-01-19 13:10:33,534 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 440 selfloop transitions, 140 changer transitions 55/776 dead transitions. [2022-01-19 13:10:33,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 776 transitions, 19178 flow [2022-01-19 13:10:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:10:33,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:10:33,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4675 transitions. [2022-01-19 13:10:33,536 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7676518883415435 [2022-01-19 13:10:33,536 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4675 transitions. [2022-01-19 13:10:33,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4675 transitions. [2022-01-19 13:10:33,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:33,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4675 transitions. [2022-01-19 13:10:33,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.20689655172413) internal successors, (4675), 29 states have internal predecessors, (4675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:33,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:33,542 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:33,542 INFO L186 Difference]: Start difference. First operand has 914 places, 680 transitions, 15047 flow. Second operand 29 states and 4675 transitions. [2022-01-19 13:10:33,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 776 transitions, 19178 flow [2022-01-19 13:10:34,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 877 places, 776 transitions, 18470 flow, removed 106 selfloop flow, removed 30 redundant places. [2022-01-19 13:10:34,590 INFO L242 Difference]: Finished difference. Result has 891 places, 697 transitions, 15543 flow [2022-01-19 13:10:34,591 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14601, PETRI_DIFFERENCE_MINUEND_PLACES=849, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15543, PETRI_PLACES=891, PETRI_TRANSITIONS=697} [2022-01-19 13:10:34,591 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 704 predicate places. [2022-01-19 13:10:34,591 INFO L470 AbstractCegarLoop]: Abstraction has has 891 places, 697 transitions, 15543 flow [2022-01-19 13:10:34,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:34,591 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:34,591 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:34,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-01-19 13:10:34,592 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:34,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:34,592 INFO L85 PathProgramCache]: Analyzing trace with hash -761768068, now seen corresponding path program 197 times [2022-01-19 13:10:34,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:34,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033152736] [2022-01-19 13:10:34,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:34,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:34,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:34,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033152736] [2022-01-19 13:10:34,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033152736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:34,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:34,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:34,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939285253] [2022-01-19 13:10:34,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:34,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:34,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:34,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:34,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:34,717 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:34,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 891 places, 697 transitions, 15543 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:34,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:34,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:34,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:36,272 INFO L129 PetriNetUnfolder]: 862/3044 cut-off events. [2022-01-19 13:10:36,273 INFO L130 PetriNetUnfolder]: For 101648/101661 co-relation queries the response was YES. [2022-01-19 13:10:36,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23624 conditions, 3044 events. 862/3044 cut-off events. For 101648/101661 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 24391 event pairs, 336 based on Foata normal form. 1/2948 useless extension candidates. Maximal degree in co-relation 23293. Up to 861 conditions per place. [2022-01-19 13:10:36,354 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 419 selfloop transitions, 171 changer transitions 58/789 dead transitions. [2022-01-19 13:10:36,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 903 places, 789 transitions, 19261 flow [2022-01-19 13:10:36,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 13:10:36,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 13:10:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4351 transitions. [2022-01-19 13:10:36,356 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7673721340388007 [2022-01-19 13:10:36,356 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4351 transitions. [2022-01-19 13:10:36,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4351 transitions. [2022-01-19 13:10:36,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:36,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4351 transitions. [2022-01-19 13:10:36,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 161.14814814814815) internal successors, (4351), 27 states have internal predecessors, (4351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:36,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:36,362 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:36,362 INFO L186 Difference]: Start difference. First operand has 891 places, 697 transitions, 15543 flow. Second operand 27 states and 4351 transitions. [2022-01-19 13:10:36,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 903 places, 789 transitions, 19261 flow [2022-01-19 13:10:37,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 890 places, 789 transitions, 18693 flow, removed 195 selfloop flow, removed 13 redundant places. [2022-01-19 13:10:37,342 INFO L242 Difference]: Finished difference. Result has 900 places, 701 transitions, 15667 flow [2022-01-19 13:10:37,342 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15146, PETRI_DIFFERENCE_MINUEND_PLACES=864, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=15667, PETRI_PLACES=900, PETRI_TRANSITIONS=701} [2022-01-19 13:10:37,342 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 713 predicate places. [2022-01-19 13:10:37,342 INFO L470 AbstractCegarLoop]: Abstraction has has 900 places, 701 transitions, 15667 flow [2022-01-19 13:10:37,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:37,343 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:37,343 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:37,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2022-01-19 13:10:37,343 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:37,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:37,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2104717412, now seen corresponding path program 198 times [2022-01-19 13:10:37,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:37,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771259986] [2022-01-19 13:10:37,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:37,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:37,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:37,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771259986] [2022-01-19 13:10:37,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771259986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:37,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:37,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:37,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825384487] [2022-01-19 13:10:37,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:37,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:37,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:37,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:37,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:37,457 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:37,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 900 places, 701 transitions, 15667 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:37,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:37,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:37,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:39,023 INFO L129 PetriNetUnfolder]: 860/3032 cut-off events. [2022-01-19 13:10:39,023 INFO L130 PetriNetUnfolder]: For 97572/97585 co-relation queries the response was YES. [2022-01-19 13:10:39,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23576 conditions, 3032 events. 860/3032 cut-off events. For 97572/97585 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 24189 event pairs, 383 based on Foata normal form. 1/2929 useless extension candidates. Maximal degree in co-relation 23243. Up to 858 conditions per place. [2022-01-19 13:10:39,104 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 448 selfloop transitions, 142 changer transitions 55/786 dead transitions. [2022-01-19 13:10:39,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 917 places, 786 transitions, 19254 flow [2022-01-19 13:10:39,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:10:39,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:10:39,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4831 transitions. [2022-01-19 13:10:39,106 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7668253968253969 [2022-01-19 13:10:39,106 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4831 transitions. [2022-01-19 13:10:39,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4831 transitions. [2022-01-19 13:10:39,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:39,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4831 transitions. [2022-01-19 13:10:39,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 161.03333333333333) internal successors, (4831), 30 states have internal predecessors, (4831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:39,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:39,112 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:39,112 INFO L186 Difference]: Start difference. First operand has 900 places, 701 transitions, 15667 flow. Second operand 30 states and 4831 transitions. [2022-01-19 13:10:39,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 917 places, 786 transitions, 19254 flow [2022-01-19 13:10:40,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 898 places, 786 transitions, 18662 flow, removed 93 selfloop flow, removed 19 redundant places. [2022-01-19 13:10:40,091 INFO L242 Difference]: Finished difference. Result has 911 places, 709 transitions, 15706 flow [2022-01-19 13:10:40,091 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15150, PETRI_DIFFERENCE_MINUEND_PLACES=869, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15706, PETRI_PLACES=911, PETRI_TRANSITIONS=709} [2022-01-19 13:10:40,091 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 724 predicate places. [2022-01-19 13:10:40,092 INFO L470 AbstractCegarLoop]: Abstraction has has 911 places, 709 transitions, 15706 flow [2022-01-19 13:10:40,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:40,092 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:40,092 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:40,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2022-01-19 13:10:40,092 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:40,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:40,092 INFO L85 PathProgramCache]: Analyzing trace with hash 264895692, now seen corresponding path program 199 times [2022-01-19 13:10:40,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:40,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737242545] [2022-01-19 13:10:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:40,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:40,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:40,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737242545] [2022-01-19 13:10:40,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737242545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:40,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:40,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:40,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839501856] [2022-01-19 13:10:40,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:40,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:40,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:40,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:40,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:40,205 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:40,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 911 places, 709 transitions, 15706 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:40,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:40,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:40,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:41,713 INFO L129 PetriNetUnfolder]: 830/2949 cut-off events. [2022-01-19 13:10:41,713 INFO L130 PetriNetUnfolder]: For 91758/91771 co-relation queries the response was YES. [2022-01-19 13:10:41,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22394 conditions, 2949 events. 830/2949 cut-off events. For 91758/91771 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 23355 event pairs, 335 based on Foata normal form. 1/2851 useless extension candidates. Maximal degree in co-relation 22058. Up to 851 conditions per place. [2022-01-19 13:10:41,797 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 414 selfloop transitions, 150 changer transitions 62/767 dead transitions. [2022-01-19 13:10:41,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 925 places, 767 transitions, 18465 flow [2022-01-19 13:10:41,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:10:41,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:10:41,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-01-19 13:10:41,799 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-01-19 13:10:41,799 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-01-19 13:10:41,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-01-19 13:10:41,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:41,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-01-19 13:10:41,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:41,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:41,806 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:41,806 INFO L186 Difference]: Start difference. First operand has 911 places, 709 transitions, 15706 flow. Second operand 30 states and 4809 transitions. [2022-01-19 13:10:41,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 925 places, 767 transitions, 18465 flow [2022-01-19 13:10:42,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 911 places, 767 transitions, 18060 flow, removed 121 selfloop flow, removed 14 redundant places. [2022-01-19 13:10:42,732 INFO L242 Difference]: Finished difference. Result has 922 places, 678 transitions, 14855 flow [2022-01-19 13:10:42,733 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15412, PETRI_DIFFERENCE_MINUEND_PLACES=882, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=14855, PETRI_PLACES=922, PETRI_TRANSITIONS=678} [2022-01-19 13:10:42,733 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 735 predicate places. [2022-01-19 13:10:42,733 INFO L470 AbstractCegarLoop]: Abstraction has has 922 places, 678 transitions, 14855 flow [2022-01-19 13:10:42,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:42,733 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:42,733 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:42,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-01-19 13:10:42,734 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:42,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:42,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1294553486, now seen corresponding path program 200 times [2022-01-19 13:10:42,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:42,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012388963] [2022-01-19 13:10:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:42,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:42,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:42,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:42,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012388963] [2022-01-19 13:10:42,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012388963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:42,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:42,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:42,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584861985] [2022-01-19 13:10:42,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:42,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:42,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:42,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:42,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:42,841 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:42,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 922 places, 678 transitions, 14855 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:42,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:42,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:42,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:44,762 INFO L129 PetriNetUnfolder]: 868/3070 cut-off events. [2022-01-19 13:10:44,763 INFO L130 PetriNetUnfolder]: For 94489/94502 co-relation queries the response was YES. [2022-01-19 13:10:44,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23563 conditions, 3070 events. 868/3070 cut-off events. For 94489/94502 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 24687 event pairs, 373 based on Foata normal form. 1/2970 useless extension candidates. Maximal degree in co-relation 23226. Up to 851 conditions per place. [2022-01-19 13:10:44,832 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 365 selfloop transitions, 235 changer transitions 77/818 dead transitions. [2022-01-19 13:10:44,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 925 places, 818 transitions, 19878 flow [2022-01-19 13:10:44,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 13:10:44,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 13:10:44,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7187 transitions. [2022-01-19 13:10:44,836 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7605291005291005 [2022-01-19 13:10:44,836 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7187 transitions. [2022-01-19 13:10:44,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7187 transitions. [2022-01-19 13:10:44,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:44,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7187 transitions. [2022-01-19 13:10:44,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.7111111111111) internal successors, (7187), 45 states have internal predecessors, (7187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:44,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:44,847 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:44,847 INFO L186 Difference]: Start difference. First operand has 922 places, 678 transitions, 14855 flow. Second operand 45 states and 7187 transitions. [2022-01-19 13:10:44,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 925 places, 818 transitions, 19878 flow [2022-01-19 13:10:45,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 891 places, 818 transitions, 18936 flow, removed 43 selfloop flow, removed 34 redundant places. [2022-01-19 13:10:45,750 INFO L242 Difference]: Finished difference. Result has 925 places, 703 transitions, 15578 flow [2022-01-19 13:10:45,750 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14176, PETRI_DIFFERENCE_MINUEND_PLACES=847, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=15578, PETRI_PLACES=925, PETRI_TRANSITIONS=703} [2022-01-19 13:10:45,751 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 738 predicate places. [2022-01-19 13:10:45,751 INFO L470 AbstractCegarLoop]: Abstraction has has 925 places, 703 transitions, 15578 flow [2022-01-19 13:10:45,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:45,751 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:45,751 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:45,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2022-01-19 13:10:45,751 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:45,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:45,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1194645428, now seen corresponding path program 201 times [2022-01-19 13:10:45,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:45,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281573238] [2022-01-19 13:10:45,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:45,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:45,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:45,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:45,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281573238] [2022-01-19 13:10:45,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281573238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:45,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:45,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:45,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728704564] [2022-01-19 13:10:45,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:45,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:45,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:45,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:45,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:45,864 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:45,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 925 places, 703 transitions, 15578 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:45,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:45,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:45,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:47,652 INFO L129 PetriNetUnfolder]: 893/3129 cut-off events. [2022-01-19 13:10:47,652 INFO L130 PetriNetUnfolder]: For 90641/90654 co-relation queries the response was YES. [2022-01-19 13:10:47,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24144 conditions, 3129 events. 893/3129 cut-off events. For 90641/90654 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 25222 event pairs, 373 based on Foata normal form. 1/3026 useless extension candidates. Maximal degree in co-relation 23795. Up to 851 conditions per place. [2022-01-19 13:10:47,740 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 450 selfloop transitions, 177 changer transitions 70/838 dead transitions. [2022-01-19 13:10:47,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 930 places, 838 transitions, 20372 flow [2022-01-19 13:10:47,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:10:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:10:47,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6090 transitions. [2022-01-19 13:10:47,743 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631578947368421 [2022-01-19 13:10:47,743 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6090 transitions. [2022-01-19 13:10:47,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6090 transitions. [2022-01-19 13:10:47,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:47,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6090 transitions. [2022-01-19 13:10:47,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.26315789473685) internal successors, (6090), 38 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:47,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:47,751 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:47,751 INFO L186 Difference]: Start difference. First operand has 925 places, 703 transitions, 15578 flow. Second operand 38 states and 6090 transitions. [2022-01-19 13:10:47,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 930 places, 838 transitions, 20372 flow [2022-01-19 13:10:48,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 900 places, 838 transitions, 19800 flow, removed 99 selfloop flow, removed 30 redundant places. [2022-01-19 13:10:48,726 INFO L242 Difference]: Finished difference. Result has 924 places, 728 transitions, 16515 flow [2022-01-19 13:10:48,727 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15128, PETRI_DIFFERENCE_MINUEND_PLACES=863, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=16515, PETRI_PLACES=924, PETRI_TRANSITIONS=728} [2022-01-19 13:10:48,727 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 737 predicate places. [2022-01-19 13:10:48,727 INFO L470 AbstractCegarLoop]: Abstraction has has 924 places, 728 transitions, 16515 flow [2022-01-19 13:10:48,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:48,727 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:48,727 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:48,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2022-01-19 13:10:48,727 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:48,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:48,728 INFO L85 PathProgramCache]: Analyzing trace with hash 973494486, now seen corresponding path program 202 times [2022-01-19 13:10:48,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:48,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649585032] [2022-01-19 13:10:48,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:48,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:48,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:48,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:48,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649585032] [2022-01-19 13:10:48,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649585032] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:48,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:48,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:48,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905475058] [2022-01-19 13:10:48,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:48,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:48,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:48,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:48,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:48,864 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:48,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 924 places, 728 transitions, 16515 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:48,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:48,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:48,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:50,692 INFO L129 PetriNetUnfolder]: 917/3203 cut-off events. [2022-01-19 13:10:50,692 INFO L130 PetriNetUnfolder]: For 89128/89141 co-relation queries the response was YES. [2022-01-19 13:10:50,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24880 conditions, 3203 events. 917/3203 cut-off events. For 89128/89141 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 26002 event pairs, 386 based on Foata normal form. 1/3098 useless extension candidates. Maximal degree in co-relation 24533. Up to 851 conditions per place. [2022-01-19 13:10:50,781 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 379 selfloop transitions, 258 changer transitions 66/844 dead transitions. [2022-01-19 13:10:50,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 937 places, 844 transitions, 20682 flow [2022-01-19 13:10:50,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:10:50,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:10:50,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6085 transitions. [2022-01-19 13:10:50,784 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625313283208021 [2022-01-19 13:10:50,784 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6085 transitions. [2022-01-19 13:10:50,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6085 transitions. [2022-01-19 13:10:50,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:50,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6085 transitions. [2022-01-19 13:10:50,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.1315789473684) internal successors, (6085), 38 states have internal predecessors, (6085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:50,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:50,792 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:50,792 INFO L186 Difference]: Start difference. First operand has 924 places, 728 transitions, 16515 flow. Second operand 38 states and 6085 transitions. [2022-01-19 13:10:50,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 937 places, 844 transitions, 20682 flow [2022-01-19 13:10:51,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 917 places, 844 transitions, 20279 flow, removed 105 selfloop flow, removed 20 redundant places. [2022-01-19 13:10:51,820 INFO L242 Difference]: Finished difference. Result has 941 places, 747 transitions, 17351 flow [2022-01-19 13:10:51,821 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16158, PETRI_DIFFERENCE_MINUEND_PLACES=880, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=17351, PETRI_PLACES=941, PETRI_TRANSITIONS=747} [2022-01-19 13:10:51,821 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 754 predicate places. [2022-01-19 13:10:51,821 INFO L470 AbstractCegarLoop]: Abstraction has has 941 places, 747 transitions, 17351 flow [2022-01-19 13:10:51,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:51,821 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:51,821 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:51,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2022-01-19 13:10:51,821 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:51,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:51,822 INFO L85 PathProgramCache]: Analyzing trace with hash -9369330, now seen corresponding path program 203 times [2022-01-19 13:10:51,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:51,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881695602] [2022-01-19 13:10:51,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:51,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:51,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:51,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881695602] [2022-01-19 13:10:51,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881695602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:51,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:51,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:51,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990506243] [2022-01-19 13:10:51,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:51,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:51,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:51,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:51,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:51,928 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:51,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 941 places, 747 transitions, 17351 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:51,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:51,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:51,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:53,566 INFO L129 PetriNetUnfolder]: 918/3189 cut-off events. [2022-01-19 13:10:53,566 INFO L130 PetriNetUnfolder]: For 86450/86463 co-relation queries the response was YES. [2022-01-19 13:10:53,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24986 conditions, 3189 events. 918/3189 cut-off events. For 86450/86463 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 25860 event pairs, 372 based on Foata normal form. 1/3083 useless extension candidates. Maximal degree in co-relation 24632. Up to 852 conditions per place. [2022-01-19 13:10:53,654 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 373 selfloop transitions, 271 changer transitions 59/844 dead transitions. [2022-01-19 13:10:53,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 945 places, 844 transitions, 21058 flow [2022-01-19 13:10:53,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:10:53,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:10:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4663 transitions. [2022-01-19 13:10:53,656 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7656814449917898 [2022-01-19 13:10:53,657 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4663 transitions. [2022-01-19 13:10:53,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4663 transitions. [2022-01-19 13:10:53,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:53,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4663 transitions. [2022-01-19 13:10:53,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.79310344827587) internal successors, (4663), 29 states have internal predecessors, (4663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:53,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:53,662 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:53,662 INFO L186 Difference]: Start difference. First operand has 941 places, 747 transitions, 17351 flow. Second operand 29 states and 4663 transitions. [2022-01-19 13:10:53,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 945 places, 844 transitions, 21058 flow [2022-01-19 13:10:54,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 925 places, 844 transitions, 20632 flow, removed 101 selfloop flow, removed 20 redundant places. [2022-01-19 13:10:54,668 INFO L242 Difference]: Finished difference. Result has 939 places, 759 transitions, 17914 flow [2022-01-19 13:10:54,668 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17022, PETRI_DIFFERENCE_MINUEND_PLACES=897, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=17914, PETRI_PLACES=939, PETRI_TRANSITIONS=759} [2022-01-19 13:10:54,668 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 752 predicate places. [2022-01-19 13:10:54,668 INFO L470 AbstractCegarLoop]: Abstraction has has 939 places, 759 transitions, 17914 flow [2022-01-19 13:10:54,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:54,669 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:54,669 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:54,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-01-19 13:10:54,669 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:54,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:54,669 INFO L85 PathProgramCache]: Analyzing trace with hash -196555810, now seen corresponding path program 204 times [2022-01-19 13:10:54,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:54,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672402263] [2022-01-19 13:10:54,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:54,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:54,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:54,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672402263] [2022-01-19 13:10:54,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672402263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:54,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:54,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:54,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255109559] [2022-01-19 13:10:54,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:54,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:54,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:54,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:54,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:54,779 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:54,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 759 transitions, 17914 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:54,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:54,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:54,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:56,602 INFO L129 PetriNetUnfolder]: 952/3297 cut-off events. [2022-01-19 13:10:56,602 INFO L130 PetriNetUnfolder]: For 90391/90404 co-relation queries the response was YES. [2022-01-19 13:10:56,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26215 conditions, 3297 events. 952/3297 cut-off events. For 90391/90404 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 26912 event pairs, 369 based on Foata normal form. 1/3191 useless extension candidates. Maximal degree in co-relation 25864. Up to 853 conditions per place. [2022-01-19 13:10:56,692 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 480 selfloop transitions, 203 changer transitions 69/893 dead transitions. [2022-01-19 13:10:56,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 893 transitions, 22945 flow [2022-01-19 13:10:56,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:10:56,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:10:56,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6088 transitions. [2022-01-19 13:10:56,695 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629072681704261 [2022-01-19 13:10:56,695 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6088 transitions. [2022-01-19 13:10:56,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6088 transitions. [2022-01-19 13:10:56,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:56,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6088 transitions. [2022-01-19 13:10:56,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.21052631578948) internal successors, (6088), 38 states have internal predecessors, (6088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:56,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:56,702 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:56,702 INFO L186 Difference]: Start difference. First operand has 939 places, 759 transitions, 17914 flow. Second operand 38 states and 6088 transitions. [2022-01-19 13:10:56,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 962 places, 893 transitions, 22945 flow [2022-01-19 13:10:57,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 949 places, 893 transitions, 22561 flow, removed 51 selfloop flow, removed 13 redundant places. [2022-01-19 13:10:57,766 INFO L242 Difference]: Finished difference. Result has 973 places, 784 transitions, 19069 flow [2022-01-19 13:10:57,766 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17584, PETRI_DIFFERENCE_MINUEND_PLACES=912, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=19069, PETRI_PLACES=973, PETRI_TRANSITIONS=784} [2022-01-19 13:10:57,766 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 786 predicate places. [2022-01-19 13:10:57,766 INFO L470 AbstractCegarLoop]: Abstraction has has 973 places, 784 transitions, 19069 flow [2022-01-19 13:10:57,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:57,767 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:10:57,767 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:10:57,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-01-19 13:10:57,767 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:10:57,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:10:57,767 INFO L85 PathProgramCache]: Analyzing trace with hash -274224380, now seen corresponding path program 205 times [2022-01-19 13:10:57,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:10:57,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605516424] [2022-01-19 13:10:57,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:10:57,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:10:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:10:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:10:57,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:10:57,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605516424] [2022-01-19 13:10:57,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605516424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:10:57,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:10:57,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:10:57,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161149143] [2022-01-19 13:10:57,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:10:57,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:10:57,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:10:57,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:10:57,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:10:57,878 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:10:57,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 973 places, 784 transitions, 19069 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:57,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:10:57,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:10:57,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:10:59,864 INFO L129 PetriNetUnfolder]: 968/3360 cut-off events. [2022-01-19 13:10:59,864 INFO L130 PetriNetUnfolder]: For 97212/97225 co-relation queries the response was YES. [2022-01-19 13:10:59,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27147 conditions, 3360 events. 968/3360 cut-off events. For 97212/97225 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 27732 event pairs, 399 based on Foata normal form. 1/3250 useless extension candidates. Maximal degree in co-relation 26780. Up to 853 conditions per place. [2022-01-19 13:10:59,949 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 501 selfloop transitions, 187 changer transitions 67/896 dead transitions. [2022-01-19 13:10:59,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 985 places, 896 transitions, 23363 flow [2022-01-19 13:10:59,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:10:59,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:10:59,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5935 transitions. [2022-01-19 13:10:59,952 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638352638352638 [2022-01-19 13:10:59,952 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5935 transitions. [2022-01-19 13:10:59,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5935 transitions. [2022-01-19 13:10:59,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:10:59,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5935 transitions. [2022-01-19 13:10:59,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.40540540540542) internal successors, (5935), 37 states have internal predecessors, (5935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:59,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:59,959 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:10:59,960 INFO L186 Difference]: Start difference. First operand has 973 places, 784 transitions, 19069 flow. Second operand 37 states and 5935 transitions. [2022-01-19 13:10:59,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 985 places, 896 transitions, 23363 flow [2022-01-19 13:11:01,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 967 places, 896 transitions, 22971 flow, removed 117 selfloop flow, removed 18 redundant places. [2022-01-19 13:11:01,152 INFO L242 Difference]: Finished difference. Result has 990 places, 801 transitions, 19769 flow [2022-01-19 13:11:01,152 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18726, PETRI_DIFFERENCE_MINUEND_PLACES=931, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=19769, PETRI_PLACES=990, PETRI_TRANSITIONS=801} [2022-01-19 13:11:01,153 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 803 predicate places. [2022-01-19 13:11:01,153 INFO L470 AbstractCegarLoop]: Abstraction has has 990 places, 801 transitions, 19769 flow [2022-01-19 13:11:01,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:01,153 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:01,153 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:01,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-01-19 13:11:01,153 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:01,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:01,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1883768268, now seen corresponding path program 206 times [2022-01-19 13:11:01,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:01,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626310473] [2022-01-19 13:11:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:01,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:01,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:11:01,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:01,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626310473] [2022-01-19 13:11:01,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626310473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:01,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:01,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:01,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523290562] [2022-01-19 13:11:01,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:01,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:01,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:01,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:01,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:01,263 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:01,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 990 places, 801 transitions, 19769 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:01,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:01,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:01,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:03,174 INFO L129 PetriNetUnfolder]: 983/3400 cut-off events. [2022-01-19 13:11:03,174 INFO L130 PetriNetUnfolder]: For 96917/96930 co-relation queries the response was YES. [2022-01-19 13:11:03,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27738 conditions, 3400 events. 983/3400 cut-off events. For 96917/96930 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 28025 event pairs, 400 based on Foata normal form. 1/3288 useless extension candidates. Maximal degree in co-relation 27364. Up to 854 conditions per place. [2022-01-19 13:11:03,275 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 485 selfloop transitions, 222 changer transitions 66/914 dead transitions. [2022-01-19 13:11:03,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1003 places, 914 transitions, 24255 flow [2022-01-19 13:11:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:11:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:11:03,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5933 transitions. [2022-01-19 13:11:03,278 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635778635778636 [2022-01-19 13:11:03,278 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5933 transitions. [2022-01-19 13:11:03,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5933 transitions. [2022-01-19 13:11:03,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:03,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5933 transitions. [2022-01-19 13:11:03,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.35135135135135) internal successors, (5933), 37 states have internal predecessors, (5933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:03,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:03,285 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:03,285 INFO L186 Difference]: Start difference. First operand has 990 places, 801 transitions, 19769 flow. Second operand 37 states and 5933 transitions. [2022-01-19 13:11:03,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1003 places, 914 transitions, 24255 flow [2022-01-19 13:11:04,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 983 places, 914 transitions, 23808 flow, removed 90 selfloop flow, removed 20 redundant places. [2022-01-19 13:11:04,451 INFO L242 Difference]: Finished difference. Result has 1007 places, 819 transitions, 20554 flow [2022-01-19 13:11:04,451 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=19380, PETRI_DIFFERENCE_MINUEND_PLACES=947, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=801, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=20554, PETRI_PLACES=1007, PETRI_TRANSITIONS=819} [2022-01-19 13:11:04,451 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 820 predicate places. [2022-01-19 13:11:04,451 INFO L470 AbstractCegarLoop]: Abstraction has has 1007 places, 819 transitions, 20554 flow [2022-01-19 13:11:04,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:04,452 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:04,452 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:04,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2022-01-19 13:11:04,452 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:04,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:04,452 INFO L85 PathProgramCache]: Analyzing trace with hash -2087182256, now seen corresponding path program 207 times [2022-01-19 13:11:04,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:04,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026711682] [2022-01-19 13:11:04,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:04,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:11:04,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:04,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026711682] [2022-01-19 13:11:04,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026711682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:04,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:04,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:04,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412031363] [2022-01-19 13:11:04,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:04,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:04,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:04,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:04,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:04,558 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:04,558 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1007 places, 819 transitions, 20554 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:04,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:04,558 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:04,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:06,631 INFO L129 PetriNetUnfolder]: 974/3422 cut-off events. [2022-01-19 13:11:06,632 INFO L130 PetriNetUnfolder]: For 101997/102010 co-relation queries the response was YES. [2022-01-19 13:11:06,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27879 conditions, 3422 events. 974/3422 cut-off events. For 101997/102010 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 28564 event pairs, 357 based on Foata normal form. 1/3320 useless extension candidates. Maximal degree in co-relation 27497. Up to 853 conditions per place. [2022-01-19 13:11:06,738 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 378 selfloop transitions, 349 changer transitions 86/954 dead transitions. [2022-01-19 13:11:06,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1029 places, 954 transitions, 25702 flow [2022-01-19 13:11:06,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 13:11:06,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 13:11:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7336 transitions. [2022-01-19 13:11:06,742 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7594202898550725 [2022-01-19 13:11:06,742 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7336 transitions. [2022-01-19 13:11:06,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7336 transitions. [2022-01-19 13:11:06,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:06,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7336 transitions. [2022-01-19 13:11:06,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.47826086956522) internal successors, (7336), 46 states have internal predecessors, (7336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:06,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:06,751 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:06,751 INFO L186 Difference]: Start difference. First operand has 1007 places, 819 transitions, 20554 flow. Second operand 46 states and 7336 transitions. [2022-01-19 13:11:06,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1029 places, 954 transitions, 25702 flow [2022-01-19 13:11:07,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1008 places, 954 transitions, 25219 flow, removed 117 selfloop flow, removed 21 redundant places. [2022-01-19 13:11:07,997 INFO L242 Difference]: Finished difference. Result has 1040 places, 820 transitions, 21154 flow [2022-01-19 13:11:07,998 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20147, PETRI_DIFFERENCE_MINUEND_PLACES=963, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=819, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=21154, PETRI_PLACES=1040, PETRI_TRANSITIONS=820} [2022-01-19 13:11:07,998 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 853 predicate places. [2022-01-19 13:11:07,998 INFO L470 AbstractCegarLoop]: Abstraction has has 1040 places, 820 transitions, 21154 flow [2022-01-19 13:11:07,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:07,998 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:07,998 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:07,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2022-01-19 13:11:07,999 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:07,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:07,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1748549088, now seen corresponding path program 208 times [2022-01-19 13:11:07,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:07,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892058697] [2022-01-19 13:11:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:07,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:08,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:11:08,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:08,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892058697] [2022-01-19 13:11:08,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892058697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:08,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:08,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:08,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020569166] [2022-01-19 13:11:08,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:08,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:08,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:08,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:08,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:08,121 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:08,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1040 places, 820 transitions, 21154 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:08,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:08,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:08,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:09,978 INFO L129 PetriNetUnfolder]: 961/3370 cut-off events. [2022-01-19 13:11:09,978 INFO L130 PetriNetUnfolder]: For 103498/103511 co-relation queries the response was YES. [2022-01-19 13:11:10,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27772 conditions, 3370 events. 961/3370 cut-off events. For 103498/103511 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 27921 event pairs, 376 based on Foata normal form. 1/3260 useless extension candidates. Maximal degree in co-relation 27375. Up to 853 conditions per place. [2022-01-19 13:11:10,082 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 509 selfloop transitions, 206 changer transitions 59/915 dead transitions. [2022-01-19 13:11:10,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1034 places, 915 transitions, 25249 flow [2022-01-19 13:11:10,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:11:10,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:11:10,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4514 transitions. [2022-01-19 13:11:10,086 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7676870748299319 [2022-01-19 13:11:10,086 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4514 transitions. [2022-01-19 13:11:10,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4514 transitions. [2022-01-19 13:11:10,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:10,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4514 transitions. [2022-01-19 13:11:10,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.21428571428572) internal successors, (4514), 28 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:10,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:10,093 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:10,093 INFO L186 Difference]: Start difference. First operand has 1040 places, 820 transitions, 21154 flow. Second operand 28 states and 4514 transitions. [2022-01-19 13:11:10,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1034 places, 915 transitions, 25249 flow [2022-01-19 13:11:11,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1002 places, 915 transitions, 24858 flow, removed 74 selfloop flow, removed 32 redundant places. [2022-01-19 13:11:11,281 INFO L242 Difference]: Finished difference. Result has 1014 places, 828 transitions, 21519 flow [2022-01-19 13:11:11,281 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20834, PETRI_DIFFERENCE_MINUEND_PLACES=975, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=820, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=21519, PETRI_PLACES=1014, PETRI_TRANSITIONS=828} [2022-01-19 13:11:11,281 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 827 predicate places. [2022-01-19 13:11:11,281 INFO L470 AbstractCegarLoop]: Abstraction has has 1014 places, 828 transitions, 21519 flow [2022-01-19 13:11:11,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:11,282 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:11,282 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:11,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2022-01-19 13:11:11,282 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:11,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:11,282 INFO L85 PathProgramCache]: Analyzing trace with hash -482510724, now seen corresponding path program 209 times [2022-01-19 13:11:11,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:11,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608114342] [2022-01-19 13:11:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:11,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:11:11,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:11,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608114342] [2022-01-19 13:11:11,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608114342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:11,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:11,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:11,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833456048] [2022-01-19 13:11:11,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:11,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:11,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:11,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:11,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:11,395 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:11,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1014 places, 828 transitions, 21519 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:11,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:11,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:11,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:13,415 INFO L129 PetriNetUnfolder]: 972/3389 cut-off events. [2022-01-19 13:11:13,416 INFO L130 PetriNetUnfolder]: For 101371/101384 co-relation queries the response was YES. [2022-01-19 13:11:13,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28042 conditions, 3389 events. 972/3389 cut-off events. For 101371/101384 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 28140 event pairs, 390 based on Foata normal form. 1/3275 useless extension candidates. Maximal degree in co-relation 27662. Up to 853 conditions per place. [2022-01-19 13:11:13,501 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 516 selfloop transitions, 202 changer transitions 57/916 dead transitions. [2022-01-19 13:11:13,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1030 places, 916 transitions, 25279 flow [2022-01-19 13:11:13,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:11:13,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:11:13,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4831 transitions. [2022-01-19 13:11:13,503 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7668253968253969 [2022-01-19 13:11:13,503 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4831 transitions. [2022-01-19 13:11:13,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4831 transitions. [2022-01-19 13:11:13,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:13,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4831 transitions. [2022-01-19 13:11:13,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 161.03333333333333) internal successors, (4831), 30 states have internal predecessors, (4831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:13,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:13,509 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:13,509 INFO L186 Difference]: Start difference. First operand has 1014 places, 828 transitions, 21519 flow. Second operand 30 states and 4831 transitions. [2022-01-19 13:11:13,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1030 places, 916 transitions, 25279 flow [2022-01-19 13:11:14,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1014 places, 916 transitions, 24751 flow, removed 69 selfloop flow, removed 16 redundant places. [2022-01-19 13:11:14,787 INFO L242 Difference]: Finished difference. Result has 1027 places, 841 transitions, 21844 flow [2022-01-19 13:11:14,787 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=21040, PETRI_DIFFERENCE_MINUEND_PLACES=985, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=21844, PETRI_PLACES=1027, PETRI_TRANSITIONS=841} [2022-01-19 13:11:14,788 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 840 predicate places. [2022-01-19 13:11:14,788 INFO L470 AbstractCegarLoop]: Abstraction has has 1027 places, 841 transitions, 21844 flow [2022-01-19 13:11:14,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:14,788 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:14,788 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:14,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2022-01-19 13:11:14,788 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:14,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:14,789 INFO L85 PathProgramCache]: Analyzing trace with hash -2067571102, now seen corresponding path program 210 times [2022-01-19 13:11:14,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:14,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119800341] [2022-01-19 13:11:14,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:14,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:14,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:11:14,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:14,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119800341] [2022-01-19 13:11:14,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119800341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:14,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:14,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:14,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691300017] [2022-01-19 13:11:14,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:14,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:14,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:14,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:14,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:14,912 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:14,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1027 places, 841 transitions, 21844 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:14,913 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:14,913 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:14,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:16,810 INFO L129 PetriNetUnfolder]: 977/3413 cut-off events. [2022-01-19 13:11:16,811 INFO L130 PetriNetUnfolder]: For 104432/104445 co-relation queries the response was YES. [2022-01-19 13:11:16,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28288 conditions, 3413 events. 977/3413 cut-off events. For 104432/104445 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 28451 event pairs, 376 based on Foata normal form. 1/3301 useless extension candidates. Maximal degree in co-relation 27905. Up to 853 conditions per place. [2022-01-19 13:11:16,912 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 524 selfloop transitions, 219 changer transitions 60/944 dead transitions. [2022-01-19 13:11:16,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1041 places, 944 transitions, 26217 flow [2022-01-19 13:11:16,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:11:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:11:16,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4826 transitions. [2022-01-19 13:11:16,915 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7660317460317461 [2022-01-19 13:11:16,915 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4826 transitions. [2022-01-19 13:11:16,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4826 transitions. [2022-01-19 13:11:16,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:16,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4826 transitions. [2022-01-19 13:11:16,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.86666666666667) internal successors, (4826), 30 states have internal predecessors, (4826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:16,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:16,921 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:16,921 INFO L186 Difference]: Start difference. First operand has 1027 places, 841 transitions, 21844 flow. Second operand 30 states and 4826 transitions. [2022-01-19 13:11:16,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1041 places, 944 transitions, 26217 flow [2022-01-19 13:11:18,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1029 places, 944 transitions, 25853 flow, removed 49 selfloop flow, removed 12 redundant places. [2022-01-19 13:11:18,195 INFO L242 Difference]: Finished difference. Result has 1043 places, 859 transitions, 22587 flow [2022-01-19 13:11:18,195 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=21524, PETRI_DIFFERENCE_MINUEND_PLACES=1000, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=22587, PETRI_PLACES=1043, PETRI_TRANSITIONS=859} [2022-01-19 13:11:18,195 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 856 predicate places. [2022-01-19 13:11:18,195 INFO L470 AbstractCegarLoop]: Abstraction has has 1043 places, 859 transitions, 22587 flow [2022-01-19 13:11:18,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:18,196 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:18,196 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:18,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2022-01-19 13:11:18,196 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:18,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:18,196 INFO L85 PathProgramCache]: Analyzing trace with hash -301185810, now seen corresponding path program 211 times [2022-01-19 13:11:18,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:18,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104501296] [2022-01-19 13:11:18,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:18,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:18,309 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 13:11:18,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:18,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104501296] [2022-01-19 13:11:18,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104501296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:18,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:18,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:18,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638193516] [2022-01-19 13:11:18,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:18,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:18,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:18,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:18,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:18,310 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:18,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1043 places, 859 transitions, 22587 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:18,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:18,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:18,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:20,497 INFO L129 PetriNetUnfolder]: 981/3492 cut-off events. [2022-01-19 13:11:20,497 INFO L130 PetriNetUnfolder]: For 109728/109741 co-relation queries the response was YES. [2022-01-19 13:11:20,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28815 conditions, 3492 events. 981/3492 cut-off events. For 109728/109741 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 29557 event pairs, 380 based on Foata normal form. 1/3385 useless extension candidates. Maximal degree in co-relation 28426. Up to 852 conditions per place. [2022-01-19 13:11:20,604 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 537 selfloop transitions, 221 changer transitions 88/987 dead transitions. [2022-01-19 13:11:20,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1070 places, 987 transitions, 27869 flow [2022-01-19 13:11:20,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 13:11:20,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 13:11:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6873 transitions. [2022-01-19 13:11:20,607 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7611295681063123 [2022-01-19 13:11:20,607 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6873 transitions. [2022-01-19 13:11:20,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6873 transitions. [2022-01-19 13:11:20,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:20,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6873 transitions. [2022-01-19 13:11:20,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.8372093023256) internal successors, (6873), 43 states have internal predecessors, (6873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:20,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:20,616 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:20,616 INFO L186 Difference]: Start difference. First operand has 1043 places, 859 transitions, 22587 flow. Second operand 43 states and 6873 transitions. [2022-01-19 13:11:20,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1070 places, 987 transitions, 27869 flow [2022-01-19 13:11:21,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1059 places, 987 transitions, 27472 flow, removed 107 selfloop flow, removed 11 redundant places. [2022-01-19 13:11:21,905 INFO L242 Difference]: Finished difference. Result has 1088 places, 863 transitions, 23198 flow [2022-01-19 13:11:21,906 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=22262, PETRI_DIFFERENCE_MINUEND_PLACES=1017, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=859, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=23198, PETRI_PLACES=1088, PETRI_TRANSITIONS=863} [2022-01-19 13:11:21,906 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 901 predicate places. [2022-01-19 13:11:21,906 INFO L470 AbstractCegarLoop]: Abstraction has has 1088 places, 863 transitions, 23198 flow [2022-01-19 13:11:21,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:21,907 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:21,907 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:21,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2022-01-19 13:11:21,907 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:21,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash 266956514, now seen corresponding path program 212 times [2022-01-19 13:11:21,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:21,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859798631] [2022-01-19 13:11:21,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:21,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:11:22,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:22,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859798631] [2022-01-19 13:11:22,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859798631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:22,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:22,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:22,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113159742] [2022-01-19 13:11:22,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:22,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:22,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:22,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:22,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:22,017 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:22,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1088 places, 863 transitions, 23198 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:22,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:22,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:22,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:24,033 INFO L129 PetriNetUnfolder]: 965/3397 cut-off events. [2022-01-19 13:11:24,033 INFO L130 PetriNetUnfolder]: For 110425/110438 co-relation queries the response was YES. [2022-01-19 13:11:24,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28570 conditions, 3397 events. 965/3397 cut-off events. For 110425/110438 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 28422 event pairs, 377 based on Foata normal form. 1/3285 useless extension candidates. Maximal degree in co-relation 28160. Up to 852 conditions per place. [2022-01-19 13:11:24,141 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 523 selfloop transitions, 220 changer transitions 61/945 dead transitions. [2022-01-19 13:11:24,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1087 places, 945 transitions, 26936 flow [2022-01-19 13:11:24,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:11:24,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:11:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4827 transitions. [2022-01-19 13:11:24,143 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7661904761904762 [2022-01-19 13:11:24,143 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4827 transitions. [2022-01-19 13:11:24,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4827 transitions. [2022-01-19 13:11:24,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:24,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4827 transitions. [2022-01-19 13:11:24,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.9) internal successors, (4827), 30 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:24,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:24,149 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:24,149 INFO L186 Difference]: Start difference. First operand has 1088 places, 863 transitions, 23198 flow. Second operand 30 states and 4827 transitions. [2022-01-19 13:11:24,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1087 places, 945 transitions, 26936 flow [2022-01-19 13:11:25,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1050 places, 945 transitions, 26155 flow, removed 107 selfloop flow, removed 37 redundant places. [2022-01-19 13:11:25,496 INFO L242 Difference]: Finished difference. Result has 1063 places, 868 transitions, 23147 flow [2022-01-19 13:11:25,496 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=22564, PETRI_DIFFERENCE_MINUEND_PLACES=1021, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=863, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=23147, PETRI_PLACES=1063, PETRI_TRANSITIONS=868} [2022-01-19 13:11:25,496 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 876 predicate places. [2022-01-19 13:11:25,497 INFO L470 AbstractCegarLoop]: Abstraction has has 1063 places, 868 transitions, 23147 flow [2022-01-19 13:11:25,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:25,497 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:25,497 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:25,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2022-01-19 13:11:25,497 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:25,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:25,497 INFO L85 PathProgramCache]: Analyzing trace with hash 370357420, now seen corresponding path program 213 times [2022-01-19 13:11:25,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:25,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861611526] [2022-01-19 13:11:25,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:25,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:25,612 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 13:11:25,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:25,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861611526] [2022-01-19 13:11:25,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861611526] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:25,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:25,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:25,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819704792] [2022-01-19 13:11:25,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:25,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:25,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:25,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:25,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:25,613 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:25,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1063 places, 868 transitions, 23147 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:25,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:25,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:25,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:27,777 INFO L129 PetriNetUnfolder]: 941/3328 cut-off events. [2022-01-19 13:11:27,777 INFO L130 PetriNetUnfolder]: For 108544/108557 co-relation queries the response was YES. [2022-01-19 13:11:27,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27281 conditions, 3328 events. 941/3328 cut-off events. For 108544/108557 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 27641 event pairs, 378 based on Foata normal form. 1/3216 useless extension candidates. Maximal degree in co-relation 26889. Up to 847 conditions per place. [2022-01-19 13:11:27,865 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 523 selfloop transitions, 203 changer transitions 62/929 dead transitions. [2022-01-19 13:11:27,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1077 places, 929 transitions, 26221 flow [2022-01-19 13:11:27,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:11:27,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:11:27,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-01-19 13:11:27,867 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-01-19 13:11:27,867 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-01-19 13:11:27,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-01-19 13:11:27,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:27,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-01-19 13:11:27,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:27,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:27,873 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:27,873 INFO L186 Difference]: Start difference. First operand has 1063 places, 868 transitions, 23147 flow. Second operand 30 states and 4816 transitions. [2022-01-19 13:11:27,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1077 places, 929 transitions, 26221 flow [2022-01-19 13:11:29,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1064 places, 929 transitions, 25869 flow, removed 60 selfloop flow, removed 13 redundant places. [2022-01-19 13:11:29,124 INFO L242 Difference]: Finished difference. Result has 1075 places, 842 transitions, 22371 flow [2022-01-19 13:11:29,124 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=22817, PETRI_DIFFERENCE_MINUEND_PLACES=1035, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=868, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=22371, PETRI_PLACES=1075, PETRI_TRANSITIONS=842} [2022-01-19 13:11:29,124 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 888 predicate places. [2022-01-19 13:11:29,124 INFO L470 AbstractCegarLoop]: Abstraction has has 1075 places, 842 transitions, 22371 flow [2022-01-19 13:11:29,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:29,125 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:29,125 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:29,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2022-01-19 13:11:29,125 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:29,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:29,125 INFO L85 PathProgramCache]: Analyzing trace with hash -156140234, now seen corresponding path program 214 times [2022-01-19 13:11:29,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:29,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396984477] [2022-01-19 13:11:29,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:29,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:29,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:11:29,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:29,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396984477] [2022-01-19 13:11:29,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396984477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:29,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:29,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:29,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459474938] [2022-01-19 13:11:29,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:29,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:29,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:29,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:29,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:29,237 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:29,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1075 places, 842 transitions, 22371 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:29,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:29,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:29,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:31,129 INFO L129 PetriNetUnfolder]: 925/3274 cut-off events. [2022-01-19 13:11:31,129 INFO L130 PetriNetUnfolder]: For 104639/104652 co-relation queries the response was YES. [2022-01-19 13:11:31,222 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26765 conditions, 3274 events. 925/3274 cut-off events. For 104639/104652 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 27079 event pairs, 372 based on Foata normal form. 1/3162 useless extension candidates. Maximal degree in co-relation 26372. Up to 846 conditions per place. [2022-01-19 13:11:31,236 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 504 selfloop transitions, 186 changer transitions 62/893 dead transitions. [2022-01-19 13:11:31,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1067 places, 893 transitions, 25131 flow [2022-01-19 13:11:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:11:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:11:31,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4503 transitions. [2022-01-19 13:11:31,238 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658163265306123 [2022-01-19 13:11:31,238 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4503 transitions. [2022-01-19 13:11:31,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4503 transitions. [2022-01-19 13:11:31,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:31,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4503 transitions. [2022-01-19 13:11:31,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.82142857142858) internal successors, (4503), 28 states have internal predecessors, (4503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:31,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:31,244 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:31,244 INFO L186 Difference]: Start difference. First operand has 1075 places, 842 transitions, 22371 flow. Second operand 28 states and 4503 transitions. [2022-01-19 13:11:31,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1067 places, 893 transitions, 25131 flow [2022-01-19 13:11:32,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1037 places, 893 transitions, 24322 flow, removed 36 selfloop flow, removed 30 redundant places. [2022-01-19 13:11:32,465 INFO L242 Difference]: Finished difference. Result has 1046 places, 817 transitions, 21239 flow [2022-01-19 13:11:32,465 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=21627, PETRI_DIFFERENCE_MINUEND_PLACES=1010, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=842, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=21239, PETRI_PLACES=1046, PETRI_TRANSITIONS=817} [2022-01-19 13:11:32,466 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 859 predicate places. [2022-01-19 13:11:32,466 INFO L470 AbstractCegarLoop]: Abstraction has has 1046 places, 817 transitions, 21239 flow [2022-01-19 13:11:32,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:32,466 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:32,466 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:32,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2022-01-19 13:11:32,466 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:32,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:32,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1662718622, now seen corresponding path program 215 times [2022-01-19 13:11:32,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:32,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48929230] [2022-01-19 13:11:32,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:32,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:11:32,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:32,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48929230] [2022-01-19 13:11:32,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48929230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:32,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:32,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:32,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190404608] [2022-01-19 13:11:32,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:32,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:32,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:32,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:32,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:32,583 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:32,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1046 places, 817 transitions, 21239 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:32,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:32,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:32,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:34,467 INFO L129 PetriNetUnfolder]: 928/3283 cut-off events. [2022-01-19 13:11:34,467 INFO L130 PetriNetUnfolder]: For 102058/102071 co-relation queries the response was YES. [2022-01-19 13:11:34,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26515 conditions, 3283 events. 928/3283 cut-off events. For 102058/102071 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 27184 event pairs, 379 based on Foata normal form. 1/3170 useless extension candidates. Maximal degree in co-relation 26132. Up to 847 conditions per place. [2022-01-19 13:11:34,565 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 501 selfloop transitions, 209 changer transitions 58/909 dead transitions. [2022-01-19 13:11:34,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1041 places, 909 transitions, 25270 flow [2022-01-19 13:11:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:11:34,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:11:34,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4669 transitions. [2022-01-19 13:11:34,567 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-01-19 13:11:34,567 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4669 transitions. [2022-01-19 13:11:34,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4669 transitions. [2022-01-19 13:11:34,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:34,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4669 transitions. [2022-01-19 13:11:34,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.0) internal successors, (4669), 29 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:34,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:34,573 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:34,573 INFO L186 Difference]: Start difference. First operand has 1046 places, 817 transitions, 21239 flow. Second operand 29 states and 4669 transitions. [2022-01-19 13:11:34,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1041 places, 909 transitions, 25270 flow [2022-01-19 13:11:35,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1003 places, 909 transitions, 24203 flow, removed 39 selfloop flow, removed 38 redundant places. [2022-01-19 13:11:35,763 INFO L242 Difference]: Finished difference. Result has 1017 places, 828 transitions, 21157 flow [2022-01-19 13:11:35,764 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20379, PETRI_DIFFERENCE_MINUEND_PLACES=975, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=21157, PETRI_PLACES=1017, PETRI_TRANSITIONS=828} [2022-01-19 13:11:35,764 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 830 predicate places. [2022-01-19 13:11:35,764 INFO L470 AbstractCegarLoop]: Abstraction has has 1017 places, 828 transitions, 21157 flow [2022-01-19 13:11:35,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:35,764 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:35,764 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:35,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2022-01-19 13:11:35,764 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:35,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:35,765 INFO L85 PathProgramCache]: Analyzing trace with hash 60543360, now seen corresponding path program 216 times [2022-01-19 13:11:35,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:35,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120957015] [2022-01-19 13:11:35,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:35,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:11:35,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:35,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120957015] [2022-01-19 13:11:35,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120957015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:35,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:35,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:35,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737525820] [2022-01-19 13:11:35,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:35,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:35,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:35,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:35,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:35,887 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:35,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1017 places, 828 transitions, 21157 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:35,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:35,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:35,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:37,700 INFO L129 PetriNetUnfolder]: 924/3276 cut-off events. [2022-01-19 13:11:37,701 INFO L130 PetriNetUnfolder]: For 93772/93785 co-relation queries the response was YES. [2022-01-19 13:11:37,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26215 conditions, 3276 events. 924/3276 cut-off events. For 93772/93785 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 27007 event pairs, 382 based on Foata normal form. 1/3165 useless extension candidates. Maximal degree in co-relation 25841. Up to 847 conditions per place. [2022-01-19 13:11:37,794 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 518 selfloop transitions, 185 changer transitions 59/903 dead transitions. [2022-01-19 13:11:37,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1031 places, 903 transitions, 24506 flow [2022-01-19 13:11:37,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:11:37,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:11:37,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4673 transitions. [2022-01-19 13:11:37,797 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7673234811165845 [2022-01-19 13:11:37,797 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4673 transitions. [2022-01-19 13:11:37,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4673 transitions. [2022-01-19 13:11:37,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:37,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4673 transitions. [2022-01-19 13:11:37,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.13793103448276) internal successors, (4673), 29 states have internal predecessors, (4673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:37,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:37,802 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:37,802 INFO L186 Difference]: Start difference. First operand has 1017 places, 828 transitions, 21157 flow. Second operand 29 states and 4673 transitions. [2022-01-19 13:11:37,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1031 places, 903 transitions, 24506 flow [2022-01-19 13:11:38,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1017 places, 903 transitions, 24032 flow, removed 48 selfloop flow, removed 14 redundant places. [2022-01-19 13:11:39,005 INFO L242 Difference]: Finished difference. Result has 1030 places, 830 transitions, 21170 flow [2022-01-19 13:11:39,005 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20736, PETRI_DIFFERENCE_MINUEND_PLACES=989, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=21170, PETRI_PLACES=1030, PETRI_TRANSITIONS=830} [2022-01-19 13:11:39,005 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 843 predicate places. [2022-01-19 13:11:39,005 INFO L470 AbstractCegarLoop]: Abstraction has has 1030 places, 830 transitions, 21170 flow [2022-01-19 13:11:39,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:39,006 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:39,006 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:39,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2022-01-19 13:11:39,006 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:39,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:39,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1402444780, now seen corresponding path program 217 times [2022-01-19 13:11:39,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:39,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539565174] [2022-01-19 13:11:39,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:39,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:11:39,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:39,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539565174] [2022-01-19 13:11:39,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539565174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:39,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:39,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:39,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024181353] [2022-01-19 13:11:39,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:39,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:39,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:39,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:39,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:39,116 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:39,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1030 places, 830 transitions, 21170 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:39,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:39,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:39,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:40,931 INFO L129 PetriNetUnfolder]: 915/3244 cut-off events. [2022-01-19 13:11:40,931 INFO L130 PetriNetUnfolder]: For 94653/94666 co-relation queries the response was YES. [2022-01-19 13:11:41,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25920 conditions, 3244 events. 915/3244 cut-off events. For 94653/94666 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 26775 event pairs, 382 based on Foata normal form. 1/3131 useless extension candidates. Maximal degree in co-relation 25541. Up to 847 conditions per place. [2022-01-19 13:11:41,025 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 516 selfloop transitions, 172 changer transitions 59/888 dead transitions. [2022-01-19 13:11:41,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1045 places, 888 transitions, 24173 flow [2022-01-19 13:11:41,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:11:41,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:11:41,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-01-19 13:11:41,027 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-01-19 13:11:41,027 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-01-19 13:11:41,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-01-19 13:11:41,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:41,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-01-19 13:11:41,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:41,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:41,033 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:41,033 INFO L186 Difference]: Start difference. First operand has 1030 places, 830 transitions, 21170 flow. Second operand 30 states and 4820 transitions. [2022-01-19 13:11:41,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1045 places, 888 transitions, 24173 flow [2022-01-19 13:11:42,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1030 places, 888 transitions, 23785 flow, removed 49 selfloop flow, removed 15 redundant places. [2022-01-19 13:11:42,390 INFO L242 Difference]: Finished difference. Result has 1042 places, 817 transitions, 20869 flow [2022-01-19 13:11:42,391 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20829, PETRI_DIFFERENCE_MINUEND_PLACES=1001, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=20869, PETRI_PLACES=1042, PETRI_TRANSITIONS=817} [2022-01-19 13:11:42,391 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 855 predicate places. [2022-01-19 13:11:42,391 INFO L470 AbstractCegarLoop]: Abstraction has has 1042 places, 817 transitions, 20869 flow [2022-01-19 13:11:42,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:42,391 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:42,391 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:42,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2022-01-19 13:11:42,391 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:42,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:42,392 INFO L85 PathProgramCache]: Analyzing trace with hash 692994718, now seen corresponding path program 218 times [2022-01-19 13:11:42,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:42,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493211569] [2022-01-19 13:11:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:42,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:42,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:11:42,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:42,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493211569] [2022-01-19 13:11:42,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493211569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:42,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:42,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:42,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458219049] [2022-01-19 13:11:42,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:42,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:42,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:42,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:42,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:42,506 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:42,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1042 places, 817 transitions, 20869 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:42,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:42,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:42,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:44,292 INFO L129 PetriNetUnfolder]: 890/3159 cut-off events. [2022-01-19 13:11:44,292 INFO L130 PetriNetUnfolder]: For 91632/91645 co-relation queries the response was YES. [2022-01-19 13:11:44,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24946 conditions, 3159 events. 890/3159 cut-off events. For 91632/91645 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 25763 event pairs, 378 based on Foata normal form. 1/3048 useless extension candidates. Maximal degree in co-relation 24565. Up to 841 conditions per place. [2022-01-19 13:11:44,388 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 502 selfloop transitions, 150 changer transitions 61/854 dead transitions. [2022-01-19 13:11:44,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1043 places, 854 transitions, 23043 flow [2022-01-19 13:11:44,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:11:44,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:11:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4654 transitions. [2022-01-19 13:11:44,390 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642036124794745 [2022-01-19 13:11:44,390 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4654 transitions. [2022-01-19 13:11:44,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4654 transitions. [2022-01-19 13:11:44,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:44,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4654 transitions. [2022-01-19 13:11:44,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.48275862068965) internal successors, (4654), 29 states have internal predecessors, (4654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:44,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:44,396 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:44,396 INFO L186 Difference]: Start difference. First operand has 1042 places, 817 transitions, 20869 flow. Second operand 29 states and 4654 transitions. [2022-01-19 13:11:44,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1043 places, 854 transitions, 23043 flow [2022-01-19 13:11:45,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1012 places, 854 transitions, 22482 flow, removed 32 selfloop flow, removed 31 redundant places. [2022-01-19 13:11:45,553 INFO L242 Difference]: Finished difference. Result has 1021 places, 781 transitions, 19552 flow [2022-01-19 13:11:45,553 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20349, PETRI_DIFFERENCE_MINUEND_PLACES=984, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=667, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=19552, PETRI_PLACES=1021, PETRI_TRANSITIONS=781} [2022-01-19 13:11:45,554 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 834 predicate places. [2022-01-19 13:11:45,554 INFO L470 AbstractCegarLoop]: Abstraction has has 1021 places, 781 transitions, 19552 flow [2022-01-19 13:11:45,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:45,554 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:45,554 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:45,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2022-01-19 13:11:45,555 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:45,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:45,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2112329232, now seen corresponding path program 219 times [2022-01-19 13:11:45,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:45,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197295338] [2022-01-19 13:11:45,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:45,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:11:45,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:45,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197295338] [2022-01-19 13:11:45,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197295338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:45,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:45,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:45,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894878230] [2022-01-19 13:11:45,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:45,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:45,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:45,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:45,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:45,668 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:45,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1021 places, 781 transitions, 19552 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:45,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:45,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:45,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:47,527 INFO L129 PetriNetUnfolder]: 884/3171 cut-off events. [2022-01-19 13:11:47,527 INFO L130 PetriNetUnfolder]: For 90049/90062 co-relation queries the response was YES. [2022-01-19 13:11:47,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24653 conditions, 3171 events. 884/3171 cut-off events. For 90049/90062 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 26098 event pairs, 362 based on Foata normal form. 1/3060 useless extension candidates. Maximal degree in co-relation 24283. Up to 840 conditions per place. [2022-01-19 13:11:47,619 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 469 selfloop transitions, 184 changer transitions 73/867 dead transitions. [2022-01-19 13:11:47,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1011 places, 867 transitions, 23146 flow [2022-01-19 13:11:47,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:11:47,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:11:47,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5607 transitions. [2022-01-19 13:11:47,622 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628571428571429 [2022-01-19 13:11:47,622 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5607 transitions. [2022-01-19 13:11:47,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5607 transitions. [2022-01-19 13:11:47,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:47,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5607 transitions. [2022-01-19 13:11:47,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.2) internal successors, (5607), 35 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:47,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:47,629 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:47,629 INFO L186 Difference]: Start difference. First operand has 1021 places, 781 transitions, 19552 flow. Second operand 35 states and 5607 transitions. [2022-01-19 13:11:47,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1011 places, 867 transitions, 23146 flow [2022-01-19 13:11:48,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 977 places, 867 transitions, 22330 flow, removed 38 selfloop flow, removed 34 redundant places. [2022-01-19 13:11:48,711 INFO L242 Difference]: Finished difference. Result has 991 places, 774 transitions, 19101 flow [2022-01-19 13:11:48,712 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18856, PETRI_DIFFERENCE_MINUEND_PLACES=943, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=19101, PETRI_PLACES=991, PETRI_TRANSITIONS=774} [2022-01-19 13:11:48,712 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 804 predicate places. [2022-01-19 13:11:48,712 INFO L470 AbstractCegarLoop]: Abstraction has has 991 places, 774 transitions, 19101 flow [2022-01-19 13:11:48,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:48,712 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:48,713 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:48,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2022-01-19 13:11:48,713 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:48,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:48,713 INFO L85 PathProgramCache]: Analyzing trace with hash 352028184, now seen corresponding path program 220 times [2022-01-19 13:11:48,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:48,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542871414] [2022-01-19 13:11:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:48,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:11:48,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:48,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542871414] [2022-01-19 13:11:48,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542871414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:48,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:48,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:48,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625774538] [2022-01-19 13:11:48,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:48,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:48,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:48,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:48,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:48,828 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:48,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 991 places, 774 transitions, 19101 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:48,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:48,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:48,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:50,787 INFO L129 PetriNetUnfolder]: 868/3202 cut-off events. [2022-01-19 13:11:50,787 INFO L130 PetriNetUnfolder]: For 87910/87923 co-relation queries the response was YES. [2022-01-19 13:11:50,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24310 conditions, 3202 events. 868/3202 cut-off events. For 87910/87923 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 26570 event pairs, 349 based on Foata normal form. 1/3104 useless extension candidates. Maximal degree in co-relation 23948. Up to 839 conditions per place. [2022-01-19 13:11:50,876 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 463 selfloop transitions, 207 changer transitions 90/901 dead transitions. [2022-01-19 13:11:50,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1013 places, 901 transitions, 24171 flow [2022-01-19 13:11:50,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 13:11:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 13:11:50,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7032 transitions. [2022-01-19 13:11:50,879 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610389610389611 [2022-01-19 13:11:50,879 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7032 transitions. [2022-01-19 13:11:50,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7032 transitions. [2022-01-19 13:11:50,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:50,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7032 transitions. [2022-01-19 13:11:50,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.8181818181818) internal successors, (7032), 44 states have internal predecessors, (7032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:50,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:50,887 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:50,887 INFO L186 Difference]: Start difference. First operand has 991 places, 774 transitions, 19101 flow. Second operand 44 states and 7032 transitions. [2022-01-19 13:11:50,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1013 places, 901 transitions, 24171 flow [2022-01-19 13:11:51,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 986 places, 901 transitions, 23646 flow, removed 65 selfloop flow, removed 27 redundant places. [2022-01-19 13:11:51,929 INFO L242 Difference]: Finished difference. Result has 1015 places, 770 transitions, 19217 flow [2022-01-19 13:11:51,929 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18670, PETRI_DIFFERENCE_MINUEND_PLACES=943, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=19217, PETRI_PLACES=1015, PETRI_TRANSITIONS=770} [2022-01-19 13:11:51,929 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 828 predicate places. [2022-01-19 13:11:51,930 INFO L470 AbstractCegarLoop]: Abstraction has has 1015 places, 770 transitions, 19217 flow [2022-01-19 13:11:51,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:51,930 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:51,930 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:51,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2022-01-19 13:11:51,930 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:51,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:51,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1465091344, now seen corresponding path program 221 times [2022-01-19 13:11:51,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:51,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831165602] [2022-01-19 13:11:51,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:51,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:11:52,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:52,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831165602] [2022-01-19 13:11:52,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831165602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:52,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:52,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:52,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942563842] [2022-01-19 13:11:52,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:52,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:52,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:52,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:52,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:52,042 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:52,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1015 places, 770 transitions, 19217 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:52,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:52,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:52,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:53,780 INFO L129 PetriNetUnfolder]: 855/3101 cut-off events. [2022-01-19 13:11:53,780 INFO L130 PetriNetUnfolder]: For 84199/84212 co-relation queries the response was YES. [2022-01-19 13:11:53,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23903 conditions, 3101 events. 855/3101 cut-off events. For 84199/84212 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 25322 event pairs, 358 based on Foata normal form. 1/2995 useless extension candidates. Maximal degree in co-relation 23532. Up to 843 conditions per place. [2022-01-19 13:11:53,870 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 450 selfloop transitions, 207 changer transitions 60/858 dead transitions. [2022-01-19 13:11:53,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1013 places, 858 transitions, 22939 flow [2022-01-19 13:11:53,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:11:53,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:11:53,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4825 transitions. [2022-01-19 13:11:53,872 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658730158730159 [2022-01-19 13:11:53,872 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4825 transitions. [2022-01-19 13:11:53,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4825 transitions. [2022-01-19 13:11:53,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:53,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4825 transitions. [2022-01-19 13:11:53,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.83333333333334) internal successors, (4825), 30 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:53,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:53,878 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:53,878 INFO L186 Difference]: Start difference. First operand has 1015 places, 770 transitions, 19217 flow. Second operand 30 states and 4825 transitions. [2022-01-19 13:11:53,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1013 places, 858 transitions, 22939 flow [2022-01-19 13:11:54,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 974 places, 858 transitions, 22234 flow, removed 113 selfloop flow, removed 39 redundant places. [2022-01-19 13:11:54,875 INFO L242 Difference]: Finished difference. Result has 987 places, 776 transitions, 19261 flow [2022-01-19 13:11:54,875 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18654, PETRI_DIFFERENCE_MINUEND_PLACES=945, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=19261, PETRI_PLACES=987, PETRI_TRANSITIONS=776} [2022-01-19 13:11:54,875 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 800 predicate places. [2022-01-19 13:11:54,875 INFO L470 AbstractCegarLoop]: Abstraction has has 987 places, 776 transitions, 19261 flow [2022-01-19 13:11:54,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:54,876 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:54,876 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:54,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2022-01-19 13:11:54,876 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:54,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:54,877 INFO L85 PathProgramCache]: Analyzing trace with hash -24388250, now seen corresponding path program 222 times [2022-01-19 13:11:54,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:54,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856479098] [2022-01-19 13:11:54,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:54,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:11:54,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:54,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856479098] [2022-01-19 13:11:54,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856479098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:54,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:54,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:54,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409345406] [2022-01-19 13:11:54,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:54,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:54,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:54,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:54,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:54,995 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:54,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 987 places, 776 transitions, 19261 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:54,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:54,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:54,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:56,616 INFO L129 PetriNetUnfolder]: 844/3066 cut-off events. [2022-01-19 13:11:56,617 INFO L130 PetriNetUnfolder]: For 82101/82114 co-relation queries the response was YES. [2022-01-19 13:11:56,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23126 conditions, 3066 events. 844/3066 cut-off events. For 82101/82114 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 24979 event pairs, 364 based on Foata normal form. 1/2957 useless extension candidates. Maximal degree in co-relation 22777. Up to 841 conditions per place. [2022-01-19 13:11:56,693 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 464 selfloop transitions, 175 changer transitions 61/841 dead transitions. [2022-01-19 13:11:56,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1000 places, 841 transitions, 22239 flow [2022-01-19 13:11:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:11:56,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:11:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4658 transitions. [2022-01-19 13:11:56,696 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7648604269293925 [2022-01-19 13:11:56,696 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4658 transitions. [2022-01-19 13:11:56,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4658 transitions. [2022-01-19 13:11:56,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:56,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4658 transitions. [2022-01-19 13:11:56,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6206896551724) internal successors, (4658), 29 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:56,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:56,702 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:56,702 INFO L186 Difference]: Start difference. First operand has 987 places, 776 transitions, 19261 flow. Second operand 29 states and 4658 transitions. [2022-01-19 13:11:56,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1000 places, 841 transitions, 22239 flow [2022-01-19 13:11:57,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 985 places, 841 transitions, 21901 flow, removed 53 selfloop flow, removed 15 redundant places. [2022-01-19 13:11:57,669 INFO L242 Difference]: Finished difference. Result has 996 places, 763 transitions, 19010 flow [2022-01-19 13:11:57,670 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18948, PETRI_DIFFERENCE_MINUEND_PLACES=957, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=19010, PETRI_PLACES=996, PETRI_TRANSITIONS=763} [2022-01-19 13:11:57,670 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 809 predicate places. [2022-01-19 13:11:57,670 INFO L470 AbstractCegarLoop]: Abstraction has has 996 places, 763 transitions, 19010 flow [2022-01-19 13:11:57,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:57,670 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:11:57,671 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:11:57,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2022-01-19 13:11:57,671 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:11:57,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:11:57,671 INFO L85 PathProgramCache]: Analyzing trace with hash -112489010, now seen corresponding path program 223 times [2022-01-19 13:11:57,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:11:57,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825704879] [2022-01-19 13:11:57,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:11:57,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:11:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:11:57,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:11:57,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:11:57,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825704879] [2022-01-19 13:11:57,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825704879] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:11:57,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:11:57,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:11:57,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571584737] [2022-01-19 13:11:57,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:11:57,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:11:57,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:11:57,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:11:57,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:11:57,786 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:11:57,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 996 places, 763 transitions, 19010 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:57,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:11:57,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:11:57,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:11:59,337 INFO L129 PetriNetUnfolder]: 816/2975 cut-off events. [2022-01-19 13:11:59,337 INFO L130 PetriNetUnfolder]: For 78401/78414 co-relation queries the response was YES. [2022-01-19 13:11:59,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22158 conditions, 2975 events. 816/2975 cut-off events. For 78401/78414 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 23931 event pairs, 350 based on Foata normal form. 1/2868 useless extension candidates. Maximal degree in co-relation 21809. Up to 832 conditions per place. [2022-01-19 13:11:59,421 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 445 selfloop transitions, 150 changer transitions 64/800 dead transitions. [2022-01-19 13:11:59,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 999 places, 800 transitions, 20995 flow [2022-01-19 13:11:59,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:11:59,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:11:59,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4802 transitions. [2022-01-19 13:11:59,423 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622222222222222 [2022-01-19 13:11:59,423 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4802 transitions. [2022-01-19 13:11:59,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4802 transitions. [2022-01-19 13:11:59,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:11:59,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4802 transitions. [2022-01-19 13:11:59,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.06666666666666) internal successors, (4802), 30 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:59,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:59,429 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:11:59,430 INFO L186 Difference]: Start difference. First operand has 996 places, 763 transitions, 19010 flow. Second operand 30 states and 4802 transitions. [2022-01-19 13:11:59,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 999 places, 800 transitions, 20995 flow [2022-01-19 13:12:00,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 970 places, 800 transitions, 20492 flow, removed 23 selfloop flow, removed 29 redundant places. [2022-01-19 13:12:00,344 INFO L242 Difference]: Finished difference. Result has 977 places, 719 transitions, 17559 flow [2022-01-19 13:12:00,345 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18531, PETRI_DIFFERENCE_MINUEND_PLACES=941, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17559, PETRI_PLACES=977, PETRI_TRANSITIONS=719} [2022-01-19 13:12:00,345 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 790 predicate places. [2022-01-19 13:12:00,345 INFO L470 AbstractCegarLoop]: Abstraction has has 977 places, 719 transitions, 17559 flow [2022-01-19 13:12:00,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:00,345 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:00,346 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:00,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2022-01-19 13:12:00,346 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:00,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:00,346 INFO L85 PathProgramCache]: Analyzing trace with hash -201395734, now seen corresponding path program 224 times [2022-01-19 13:12:00,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:00,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83326028] [2022-01-19 13:12:00,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:00,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:00,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:00,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:00,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83326028] [2022-01-19 13:12:00,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83326028] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:00,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:00,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:00,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768945091] [2022-01-19 13:12:00,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:00,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:00,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:00,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:00,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:00,452 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:00,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 977 places, 719 transitions, 17559 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:00,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:00,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:00,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:02,002 INFO L129 PetriNetUnfolder]: 813/2976 cut-off events. [2022-01-19 13:12:02,002 INFO L130 PetriNetUnfolder]: For 76135/76148 co-relation queries the response was YES. [2022-01-19 13:12:02,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22014 conditions, 2976 events. 813/2976 cut-off events. For 76135/76148 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 24011 event pairs, 330 based on Foata normal form. 1/2875 useless extension candidates. Maximal degree in co-relation 21674. Up to 834 conditions per place. [2022-01-19 13:12:02,082 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 325 selfloop transitions, 283 changer transitions 61/810 dead transitions. [2022-01-19 13:12:02,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 810 transitions, 21113 flow [2022-01-19 13:12:02,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:12:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:12:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 13:12:02,085 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 13:12:02,085 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 13:12:02,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 13:12:02,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:02,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 13:12:02,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:02,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:02,091 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:02,091 INFO L186 Difference]: Start difference. First operand has 977 places, 719 transitions, 17559 flow. Second operand 30 states and 4817 transitions. [2022-01-19 13:12:02,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 810 transitions, 21113 flow [2022-01-19 13:12:02,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 922 places, 810 transitions, 19990 flow, removed 27 selfloop flow, removed 34 redundant places. [2022-01-19 13:12:02,940 INFO L242 Difference]: Finished difference. Result has 935 places, 725 transitions, 17335 flow [2022-01-19 13:12:02,941 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16582, PETRI_DIFFERENCE_MINUEND_PLACES=893, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17335, PETRI_PLACES=935, PETRI_TRANSITIONS=725} [2022-01-19 13:12:02,941 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 748 predicate places. [2022-01-19 13:12:02,941 INFO L470 AbstractCegarLoop]: Abstraction has has 935 places, 725 transitions, 17335 flow [2022-01-19 13:12:02,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:02,941 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:02,941 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:02,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2022-01-19 13:12:02,941 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:02,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:02,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1469440986, now seen corresponding path program 225 times [2022-01-19 13:12:02,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:02,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084558520] [2022-01-19 13:12:02,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:02,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:03,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:03,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:03,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084558520] [2022-01-19 13:12:03,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084558520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:03,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:03,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:03,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957068670] [2022-01-19 13:12:03,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:03,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:03,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:03,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:03,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:03,052 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:03,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 935 places, 725 transitions, 17335 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:03,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:03,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:03,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:04,678 INFO L129 PetriNetUnfolder]: 810/2987 cut-off events. [2022-01-19 13:12:04,678 INFO L130 PetriNetUnfolder]: For 72633/72646 co-relation queries the response was YES. [2022-01-19 13:12:04,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21746 conditions, 2987 events. 810/2987 cut-off events. For 72633/72646 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 24135 event pairs, 337 based on Foata normal form. 1/2888 useless extension candidates. Maximal degree in co-relation 21414. Up to 833 conditions per place. [2022-01-19 13:12:04,757 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 385 selfloop transitions, 228 changer transitions 68/822 dead transitions. [2022-01-19 13:12:04,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 822 transitions, 21143 flow [2022-01-19 13:12:04,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:12:04,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:12:04,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2022-01-19 13:12:04,760 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2022-01-19 13:12:04,760 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2022-01-19 13:12:04,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2022-01-19 13:12:04,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:04,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2022-01-19 13:12:04,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:04,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:04,767 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:04,767 INFO L186 Difference]: Start difference. First operand has 935 places, 725 transitions, 17335 flow. Second operand 37 states and 5925 transitions. [2022-01-19 13:12:04,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 822 transitions, 21143 flow [2022-01-19 13:12:05,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 942 places, 822 transitions, 20784 flow, removed 74 selfloop flow, removed 14 redundant places. [2022-01-19 13:12:05,587 INFO L242 Difference]: Finished difference. Result has 966 places, 729 transitions, 17764 flow [2022-01-19 13:12:05,588 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17051, PETRI_DIFFERENCE_MINUEND_PLACES=906, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=17764, PETRI_PLACES=966, PETRI_TRANSITIONS=729} [2022-01-19 13:12:05,588 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 779 predicate places. [2022-01-19 13:12:05,588 INFO L470 AbstractCegarLoop]: Abstraction has has 966 places, 729 transitions, 17764 flow [2022-01-19 13:12:05,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:05,588 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:05,589 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:05,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2022-01-19 13:12:05,589 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:05,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:05,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1320396048, now seen corresponding path program 226 times [2022-01-19 13:12:05,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:05,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654473911] [2022-01-19 13:12:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:05,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:05,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:05,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654473911] [2022-01-19 13:12:05,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654473911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:05,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:05,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:05,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431090893] [2022-01-19 13:12:05,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:05,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:05,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:05,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:05,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:05,706 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:05,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 966 places, 729 transitions, 17764 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:05,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:05,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:05,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:07,243 INFO L129 PetriNetUnfolder]: 806/2971 cut-off events. [2022-01-19 13:12:07,244 INFO L130 PetriNetUnfolder]: For 77461/77474 co-relation queries the response was YES. [2022-01-19 13:12:07,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21922 conditions, 2971 events. 806/2971 cut-off events. For 77461/77474 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 23956 event pairs, 328 based on Foata normal form. 1/2871 useless extension candidates. Maximal degree in co-relation 21576. Up to 832 conditions per place. [2022-01-19 13:12:07,325 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 399 selfloop transitions, 222 changer transitions 61/823 dead transitions. [2022-01-19 13:12:07,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 970 places, 823 transitions, 21603 flow [2022-01-19 13:12:07,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:12:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:12:07,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4508 transitions. [2022-01-19 13:12:07,328 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-01-19 13:12:07,328 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4508 transitions. [2022-01-19 13:12:07,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4508 transitions. [2022-01-19 13:12:07,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:07,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4508 transitions. [2022-01-19 13:12:07,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.0) internal successors, (4508), 28 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:07,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:07,333 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:07,333 INFO L186 Difference]: Start difference. First operand has 966 places, 729 transitions, 17764 flow. Second operand 28 states and 4508 transitions. [2022-01-19 13:12:07,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 970 places, 823 transitions, 21603 flow [2022-01-19 13:12:08,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 946 places, 823 transitions, 21174 flow, removed 85 selfloop flow, removed 24 redundant places. [2022-01-19 13:12:08,211 INFO L242 Difference]: Finished difference. Result has 958 places, 737 transitions, 18112 flow [2022-01-19 13:12:08,211 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17395, PETRI_DIFFERENCE_MINUEND_PLACES=919, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=18112, PETRI_PLACES=958, PETRI_TRANSITIONS=737} [2022-01-19 13:12:08,211 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 771 predicate places. [2022-01-19 13:12:08,211 INFO L470 AbstractCegarLoop]: Abstraction has has 958 places, 737 transitions, 18112 flow [2022-01-19 13:12:08,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:08,212 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:08,212 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:08,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2022-01-19 13:12:08,212 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:08,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:08,212 INFO L85 PathProgramCache]: Analyzing trace with hash -130160226, now seen corresponding path program 227 times [2022-01-19 13:12:08,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:08,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195311912] [2022-01-19 13:12:08,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:08,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:08,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:08,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:08,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195311912] [2022-01-19 13:12:08,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195311912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:08,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:08,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:08,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644380108] [2022-01-19 13:12:08,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:08,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:08,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:08,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:08,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:08,325 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:08,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 958 places, 737 transitions, 18112 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:08,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:08,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:08,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:09,862 INFO L129 PetriNetUnfolder]: 808/2973 cut-off events. [2022-01-19 13:12:09,862 INFO L130 PetriNetUnfolder]: For 77266/77279 co-relation queries the response was YES. [2022-01-19 13:12:10,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22103 conditions, 2973 events. 808/2973 cut-off events. For 77266/77279 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 24075 event pairs, 341 based on Foata normal form. 1/2869 useless extension candidates. Maximal degree in co-relation 21765. Up to 834 conditions per place. [2022-01-19 13:12:10,081 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 423 selfloop transitions, 196 changer transitions 56/816 dead transitions. [2022-01-19 13:12:10,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 973 places, 816 transitions, 21658 flow [2022-01-19 13:12:10,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:12:10,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:12:10,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4671 transitions. [2022-01-19 13:12:10,083 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7669950738916256 [2022-01-19 13:12:10,083 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4671 transitions. [2022-01-19 13:12:10,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4671 transitions. [2022-01-19 13:12:10,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:10,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4671 transitions. [2022-01-19 13:12:10,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.06896551724137) internal successors, (4671), 29 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:10,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:10,089 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:10,089 INFO L186 Difference]: Start difference. First operand has 958 places, 737 transitions, 18112 flow. Second operand 29 states and 4671 transitions. [2022-01-19 13:12:10,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 973 places, 816 transitions, 21658 flow [2022-01-19 13:12:10,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 959 places, 816 transitions, 21138 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-01-19 13:12:10,954 INFO L242 Difference]: Finished difference. Result has 972 places, 748 transitions, 18495 flow [2022-01-19 13:12:10,954 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17653, PETRI_DIFFERENCE_MINUEND_PLACES=931, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=18495, PETRI_PLACES=972, PETRI_TRANSITIONS=748} [2022-01-19 13:12:10,955 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 785 predicate places. [2022-01-19 13:12:10,955 INFO L470 AbstractCegarLoop]: Abstraction has has 972 places, 748 transitions, 18495 flow [2022-01-19 13:12:10,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:10,955 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:10,955 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:10,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2022-01-19 13:12:10,955 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:10,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:10,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1369733580, now seen corresponding path program 228 times [2022-01-19 13:12:10,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:10,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416412310] [2022-01-19 13:12:10,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:10,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:11,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:11,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:11,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416412310] [2022-01-19 13:12:11,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416412310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:11,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:11,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:11,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152483301] [2022-01-19 13:12:11,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:11,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:11,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:11,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:11,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:11,069 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:11,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 972 places, 748 transitions, 18495 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:11,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:11,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:11,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:12,526 INFO L129 PetriNetUnfolder]: 790/2912 cut-off events. [2022-01-19 13:12:12,526 INFO L130 PetriNetUnfolder]: For 76302/76315 co-relation queries the response was YES. [2022-01-19 13:12:12,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21451 conditions, 2912 events. 790/2912 cut-off events. For 76302/76315 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23417 event pairs, 340 based on Foata normal form. 1/2810 useless extension candidates. Maximal degree in co-relation 21108. Up to 835 conditions per place. [2022-01-19 13:12:12,607 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 419 selfloop transitions, 180 changer transitions 61/801 dead transitions. [2022-01-19 13:12:12,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 985 places, 801 transitions, 21098 flow [2022-01-19 13:12:12,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:12:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:12:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4501 transitions. [2022-01-19 13:12:12,610 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7654761904761904 [2022-01-19 13:12:12,610 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4501 transitions. [2022-01-19 13:12:12,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4501 transitions. [2022-01-19 13:12:12,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:12,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4501 transitions. [2022-01-19 13:12:12,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.75) internal successors, (4501), 28 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:12,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:12,616 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:12,616 INFO L186 Difference]: Start difference. First operand has 972 places, 748 transitions, 18495 flow. Second operand 28 states and 4501 transitions. [2022-01-19 13:12:12,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 985 places, 801 transitions, 21098 flow [2022-01-19 13:12:13,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 971 places, 801 transitions, 20662 flow, removed 76 selfloop flow, removed 14 redundant places. [2022-01-19 13:12:13,487 INFO L242 Difference]: Finished difference. Result has 980 places, 724 transitions, 17758 flow [2022-01-19 13:12:13,487 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18093, PETRI_DIFFERENCE_MINUEND_PLACES=944, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=17758, PETRI_PLACES=980, PETRI_TRANSITIONS=724} [2022-01-19 13:12:13,487 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 793 predicate places. [2022-01-19 13:12:13,487 INFO L470 AbstractCegarLoop]: Abstraction has has 980 places, 724 transitions, 17758 flow [2022-01-19 13:12:13,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:13,488 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:13,488 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:13,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2022-01-19 13:12:13,488 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:13,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:13,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1946327382, now seen corresponding path program 229 times [2022-01-19 13:12:13,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:13,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157260214] [2022-01-19 13:12:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:13,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:13,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:13,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157260214] [2022-01-19 13:12:13,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157260214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:13,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:13,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:13,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168683067] [2022-01-19 13:12:13,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:13,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:13,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:13,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:13,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:13,596 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:13,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 980 places, 724 transitions, 17758 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:13,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:13,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:13,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:15,080 INFO L129 PetriNetUnfolder]: 775/2870 cut-off events. [2022-01-19 13:12:15,080 INFO L130 PetriNetUnfolder]: For 73915/73928 co-relation queries the response was YES. [2022-01-19 13:12:15,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20926 conditions, 2870 events. 775/2870 cut-off events. For 73915/73928 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 23041 event pairs, 349 based on Foata normal form. 1/2766 useless extension candidates. Maximal degree in co-relation 20583. Up to 832 conditions per place. [2022-01-19 13:12:15,158 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 405 selfloop transitions, 167 changer transitions 61/774 dead transitions. [2022-01-19 13:12:15,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 976 places, 774 transitions, 20215 flow [2022-01-19 13:12:15,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:12:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:12:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4818 transitions. [2022-01-19 13:12:15,160 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7647619047619048 [2022-01-19 13:12:15,161 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4818 transitions. [2022-01-19 13:12:15,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4818 transitions. [2022-01-19 13:12:15,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:15,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4818 transitions. [2022-01-19 13:12:15,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.6) internal successors, (4818), 30 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:15,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:15,167 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:15,167 INFO L186 Difference]: Start difference. First operand has 980 places, 724 transitions, 17758 flow. Second operand 30 states and 4818 transitions. [2022-01-19 13:12:15,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 976 places, 774 transitions, 20215 flow [2022-01-19 13:12:15,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 945 places, 774 transitions, 19370 flow, removed 30 selfloop flow, removed 31 redundant places. [2022-01-19 13:12:15,984 INFO L242 Difference]: Finished difference. Result has 954 places, 702 transitions, 16671 flow [2022-01-19 13:12:15,984 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16998, PETRI_DIFFERENCE_MINUEND_PLACES=916, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16671, PETRI_PLACES=954, PETRI_TRANSITIONS=702} [2022-01-19 13:12:15,984 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 767 predicate places. [2022-01-19 13:12:15,984 INFO L470 AbstractCegarLoop]: Abstraction has has 954 places, 702 transitions, 16671 flow [2022-01-19 13:12:15,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:15,985 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:15,985 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:15,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2022-01-19 13:12:15,985 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:15,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:15,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1330589584, now seen corresponding path program 230 times [2022-01-19 13:12:15,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:15,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231982134] [2022-01-19 13:12:15,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:15,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:16,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:16,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231982134] [2022-01-19 13:12:16,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231982134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:16,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:16,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:16,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713800586] [2022-01-19 13:12:16,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:16,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:16,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:16,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:16,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:16,105 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:16,105 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 954 places, 702 transitions, 16671 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:16,105 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:16,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:16,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:17,681 INFO L129 PetriNetUnfolder]: 773/2885 cut-off events. [2022-01-19 13:12:17,681 INFO L130 PetriNetUnfolder]: For 70378/70391 co-relation queries the response was YES. [2022-01-19 13:12:17,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20523 conditions, 2885 events. 773/2885 cut-off events. For 70378/70391 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 23198 event pairs, 332 based on Foata normal form. 1/2787 useless extension candidates. Maximal degree in co-relation 20189. Up to 831 conditions per place. [2022-01-19 13:12:17,757 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 401 selfloop transitions, 187 changer transitions 72/801 dead transitions. [2022-01-19 13:12:17,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 801 transitions, 20502 flow [2022-01-19 13:12:17,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:12:17,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:12:17,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2022-01-19 13:12:17,760 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2022-01-19 13:12:17,760 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2022-01-19 13:12:17,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2022-01-19 13:12:17,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:17,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2022-01-19 13:12:17,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:17,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:17,767 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:17,767 INFO L186 Difference]: Start difference. First operand has 954 places, 702 transitions, 16671 flow. Second operand 36 states and 5770 transitions. [2022-01-19 13:12:17,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 962 places, 801 transitions, 20502 flow [2022-01-19 13:12:18,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 932 places, 801 transitions, 19839 flow, removed 49 selfloop flow, removed 30 redundant places. [2022-01-19 13:12:18,544 INFO L242 Difference]: Finished difference. Result has 954 places, 707 transitions, 16754 flow [2022-01-19 13:12:18,545 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16122, PETRI_DIFFERENCE_MINUEND_PLACES=897, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=16754, PETRI_PLACES=954, PETRI_TRANSITIONS=707} [2022-01-19 13:12:18,545 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 767 predicate places. [2022-01-19 13:12:18,545 INFO L470 AbstractCegarLoop]: Abstraction has has 954 places, 707 transitions, 16754 flow [2022-01-19 13:12:18,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:18,545 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:18,545 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:18,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2022-01-19 13:12:18,546 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:18,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:18,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1516969922, now seen corresponding path program 231 times [2022-01-19 13:12:18,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:18,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537534396] [2022-01-19 13:12:18,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:18,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:18,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:18,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537534396] [2022-01-19 13:12:18,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537534396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:18,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:18,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:18,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120303938] [2022-01-19 13:12:18,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:18,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:18,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:18,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:18,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:18,657 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:18,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 954 places, 707 transitions, 16754 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:18,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:18,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:18,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:20,043 INFO L129 PetriNetUnfolder]: 748/2788 cut-off events. [2022-01-19 13:12:20,043 INFO L130 PetriNetUnfolder]: For 65516/65529 co-relation queries the response was YES. [2022-01-19 13:12:20,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19686 conditions, 2788 events. 748/2788 cut-off events. For 65516/65529 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 22070 event pairs, 320 based on Foata normal form. 1/2692 useless extension candidates. Maximal degree in co-relation 19348. Up to 826 conditions per place. [2022-01-19 13:12:20,113 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 378 selfloop transitions, 178 changer transitions 64/761 dead transitions. [2022-01-19 13:12:20,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 961 places, 761 transitions, 19217 flow [2022-01-19 13:12:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:12:20,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:12:20,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4810 transitions. [2022-01-19 13:12:20,116 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634920634920634 [2022-01-19 13:12:20,116 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4810 transitions. [2022-01-19 13:12:20,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4810 transitions. [2022-01-19 13:12:20,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:20,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4810 transitions. [2022-01-19 13:12:20,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.33333333333334) internal successors, (4810), 30 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:20,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:20,121 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:20,121 INFO L186 Difference]: Start difference. First operand has 954 places, 707 transitions, 16754 flow. Second operand 30 states and 4810 transitions. [2022-01-19 13:12:20,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 961 places, 761 transitions, 19217 flow [2022-01-19 13:12:20,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 761 transitions, 18602 flow, removed 119 selfloop flow, removed 34 redundant places. [2022-01-19 13:12:20,852 INFO L242 Difference]: Finished difference. Result has 938 places, 679 transitions, 15760 flow [2022-01-19 13:12:20,852 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16253, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15760, PETRI_PLACES=938, PETRI_TRANSITIONS=679} [2022-01-19 13:12:20,853 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 751 predicate places. [2022-01-19 13:12:20,853 INFO L470 AbstractCegarLoop]: Abstraction has has 938 places, 679 transitions, 15760 flow [2022-01-19 13:12:20,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:20,853 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:20,853 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:20,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2022-01-19 13:12:20,853 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:20,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:20,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2058007792, now seen corresponding path program 232 times [2022-01-19 13:12:20,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:20,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102126662] [2022-01-19 13:12:20,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:20,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:20,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:20,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102126662] [2022-01-19 13:12:20,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102126662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:20,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:20,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:20,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510634848] [2022-01-19 13:12:20,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:20,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:20,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:20,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:20,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:20,978 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:20,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 938 places, 679 transitions, 15760 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:20,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:20,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:20,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:22,327 INFO L129 PetriNetUnfolder]: 755/2807 cut-off events. [2022-01-19 13:12:22,327 INFO L130 PetriNetUnfolder]: For 65217/65230 co-relation queries the response was YES. [2022-01-19 13:12:22,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19715 conditions, 2807 events. 755/2807 cut-off events. For 65217/65230 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 22281 event pairs, 323 based on Foata normal form. 1/2709 useless extension candidates. Maximal degree in co-relation 19394. Up to 827 conditions per place. [2022-01-19 13:12:22,399 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 386 selfloop transitions, 178 changer transitions 56/761 dead transitions. [2022-01-19 13:12:22,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 931 places, 761 transitions, 19200 flow [2022-01-19 13:12:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:12:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:12:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4665 transitions. [2022-01-19 13:12:22,401 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7660098522167488 [2022-01-19 13:12:22,401 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4665 transitions. [2022-01-19 13:12:22,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4665 transitions. [2022-01-19 13:12:22,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:22,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4665 transitions. [2022-01-19 13:12:22,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.86206896551724) internal successors, (4665), 29 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:22,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:22,407 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:22,407 INFO L186 Difference]: Start difference. First operand has 938 places, 679 transitions, 15760 flow. Second operand 29 states and 4665 transitions. [2022-01-19 13:12:22,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 931 places, 761 transitions, 19200 flow [2022-01-19 13:12:23,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 896 places, 761 transitions, 18269 flow, removed 64 selfloop flow, removed 35 redundant places. [2022-01-19 13:12:23,042 INFO L242 Difference]: Finished difference. Result has 910 places, 691 transitions, 15805 flow [2022-01-19 13:12:23,042 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15018, PETRI_DIFFERENCE_MINUEND_PLACES=868, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15805, PETRI_PLACES=910, PETRI_TRANSITIONS=691} [2022-01-19 13:12:23,042 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 723 predicate places. [2022-01-19 13:12:23,042 INFO L470 AbstractCegarLoop]: Abstraction has has 910 places, 691 transitions, 15805 flow [2022-01-19 13:12:23,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:23,043 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:23,043 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:23,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2022-01-19 13:12:23,043 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:23,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:23,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1361885928, now seen corresponding path program 233 times [2022-01-19 13:12:23,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:23,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773880665] [2022-01-19 13:12:23,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:23,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:23,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:23,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773880665] [2022-01-19 13:12:23,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773880665] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:23,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:23,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:23,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177384752] [2022-01-19 13:12:23,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:23,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:23,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:23,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:23,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:23,151 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:23,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 691 transitions, 15805 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:23,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:23,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:23,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:24,456 INFO L129 PetriNetUnfolder]: 730/2736 cut-off events. [2022-01-19 13:12:24,456 INFO L130 PetriNetUnfolder]: For 56469/56482 co-relation queries the response was YES. [2022-01-19 13:12:24,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18575 conditions, 2736 events. 730/2736 cut-off events. For 56469/56482 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21515 event pairs, 319 based on Foata normal form. 1/2639 useless extension candidates. Maximal degree in co-relation 18262. Up to 828 conditions per place. [2022-01-19 13:12:24,514 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 288 selfloop transitions, 240 changer transitions 62/731 dead transitions. [2022-01-19 13:12:24,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 922 places, 731 transitions, 17710 flow [2022-01-19 13:12:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 13:12:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 13:12:24,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4334 transitions. [2022-01-19 13:12:24,516 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7643738977072311 [2022-01-19 13:12:24,516 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4334 transitions. [2022-01-19 13:12:24,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4334 transitions. [2022-01-19 13:12:24,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:24,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4334 transitions. [2022-01-19 13:12:24,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.5185185185185) internal successors, (4334), 27 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:24,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:24,522 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:24,522 INFO L186 Difference]: Start difference. First operand has 910 places, 691 transitions, 15805 flow. Second operand 27 states and 4334 transitions. [2022-01-19 13:12:24,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 922 places, 731 transitions, 17710 flow [2022-01-19 13:12:25,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 909 places, 731 transitions, 17353 flow, removed 63 selfloop flow, removed 13 redundant places. [2022-01-19 13:12:25,134 INFO L242 Difference]: Finished difference. Result has 916 places, 654 transitions, 14806 flow [2022-01-19 13:12:25,134 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15473, PETRI_DIFFERENCE_MINUEND_PLACES=883, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=14806, PETRI_PLACES=916, PETRI_TRANSITIONS=654} [2022-01-19 13:12:25,134 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 729 predicate places. [2022-01-19 13:12:25,134 INFO L470 AbstractCegarLoop]: Abstraction has has 916 places, 654 transitions, 14806 flow [2022-01-19 13:12:25,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:25,134 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:25,134 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:25,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2022-01-19 13:12:25,135 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:25,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:25,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2093778448, now seen corresponding path program 234 times [2022-01-19 13:12:25,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:25,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231124504] [2022-01-19 13:12:25,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:25,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:25,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:25,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231124504] [2022-01-19 13:12:25,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231124504] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:25,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:25,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:25,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984465910] [2022-01-19 13:12:25,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:25,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:25,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:25,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:25,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:25,239 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:25,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 916 places, 654 transitions, 14806 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:25,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:25,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:25,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:26,515 INFO L129 PetriNetUnfolder]: 723/2721 cut-off events. [2022-01-19 13:12:26,516 INFO L130 PetriNetUnfolder]: For 57837/57850 co-relation queries the response was YES. [2022-01-19 13:12:26,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18429 conditions, 2721 events. 723/2721 cut-off events. For 57837/57850 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21448 event pairs, 330 based on Foata normal form. 1/2623 useless extension candidates. Maximal degree in co-relation 18117. Up to 828 conditions per place. [2022-01-19 13:12:26,582 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 345 selfloop transitions, 188 changer transitions 58/732 dead transitions. [2022-01-19 13:12:26,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 732 transitions, 17798 flow [2022-01-19 13:12:26,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:12:26,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:12:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4821 transitions. [2022-01-19 13:12:26,584 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652380952380953 [2022-01-19 13:12:26,584 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4821 transitions. [2022-01-19 13:12:26,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4821 transitions. [2022-01-19 13:12:26,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:26,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4821 transitions. [2022-01-19 13:12:26,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.7) internal successors, (4821), 30 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:26,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:26,590 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:26,590 INFO L186 Difference]: Start difference. First operand has 916 places, 654 transitions, 14806 flow. Second operand 30 states and 4821 transitions. [2022-01-19 13:12:26,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 732 transitions, 17798 flow [2022-01-19 13:12:27,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 867 places, 732 transitions, 16084 flow, removed 30 selfloop flow, removed 38 redundant places. [2022-01-19 13:12:27,134 INFO L242 Difference]: Finished difference. Result has 881 places, 659 transitions, 13779 flow [2022-01-19 13:12:27,134 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13247, PETRI_DIFFERENCE_MINUEND_PLACES=838, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13779, PETRI_PLACES=881, PETRI_TRANSITIONS=659} [2022-01-19 13:12:27,134 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 694 predicate places. [2022-01-19 13:12:27,134 INFO L470 AbstractCegarLoop]: Abstraction has has 881 places, 659 transitions, 13779 flow [2022-01-19 13:12:27,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:27,135 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:27,135 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:27,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2022-01-19 13:12:27,135 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:27,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:27,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1815089882, now seen corresponding path program 235 times [2022-01-19 13:12:27,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:27,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996334419] [2022-01-19 13:12:27,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:27,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:27,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:27,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:27,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996334419] [2022-01-19 13:12:27,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996334419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:27,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:27,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:27,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742166922] [2022-01-19 13:12:27,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:27,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:27,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:27,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:27,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:27,240 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:27,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 881 places, 659 transitions, 13779 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:27,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:27,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:27,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:28,497 INFO L129 PetriNetUnfolder]: 717/2702 cut-off events. [2022-01-19 13:12:28,497 INFO L130 PetriNetUnfolder]: For 48158/48171 co-relation queries the response was YES. [2022-01-19 13:12:28,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17456 conditions, 2702 events. 717/2702 cut-off events. For 48158/48171 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 21324 event pairs, 319 based on Foata normal form. 1/2604 useless extension candidates. Maximal degree in co-relation 17152. Up to 828 conditions per place. [2022-01-19 13:12:28,560 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 347 selfloop transitions, 187 changer transitions 58/733 dead transitions. [2022-01-19 13:12:28,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 895 places, 733 transitions, 16630 flow [2022-01-19 13:12:28,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:12:28,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:12:28,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4821 transitions. [2022-01-19 13:12:28,563 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652380952380953 [2022-01-19 13:12:28,563 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4821 transitions. [2022-01-19 13:12:28,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4821 transitions. [2022-01-19 13:12:28,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:28,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4821 transitions. [2022-01-19 13:12:28,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.7) internal successors, (4821), 30 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:28,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:28,569 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:28,569 INFO L186 Difference]: Start difference. First operand has 881 places, 659 transitions, 13779 flow. Second operand 30 states and 4821 transitions. [2022-01-19 13:12:28,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 895 places, 733 transitions, 16630 flow [2022-01-19 13:12:29,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 881 places, 733 transitions, 16289 flow, removed 76 selfloop flow, removed 14 redundant places. [2022-01-19 13:12:29,095 INFO L242 Difference]: Finished difference. Result has 892 places, 661 transitions, 13953 flow [2022-01-19 13:12:29,096 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13512, PETRI_DIFFERENCE_MINUEND_PLACES=852, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13953, PETRI_PLACES=892, PETRI_TRANSITIONS=661} [2022-01-19 13:12:29,096 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 705 predicate places. [2022-01-19 13:12:29,096 INFO L470 AbstractCegarLoop]: Abstraction has has 892 places, 661 transitions, 13953 flow [2022-01-19 13:12:29,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:29,096 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:29,096 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:29,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2022-01-19 13:12:29,096 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:29,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:29,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1831656044, now seen corresponding path program 236 times [2022-01-19 13:12:29,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:29,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430003178] [2022-01-19 13:12:29,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:29,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:29,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:29,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:29,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430003178] [2022-01-19 13:12:29,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430003178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:29,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:29,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:29,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995160091] [2022-01-19 13:12:29,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:29,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:29,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:29,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:29,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:29,218 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:29,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 661 transitions, 13953 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:29,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:29,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:29,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:30,431 INFO L129 PetriNetUnfolder]: 697/2646 cut-off events. [2022-01-19 13:12:30,431 INFO L130 PetriNetUnfolder]: For 51366/51379 co-relation queries the response was YES. [2022-01-19 13:12:30,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16925 conditions, 2646 events. 697/2646 cut-off events. For 51366/51379 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 20607 event pairs, 312 based on Foata normal form. 1/2551 useless extension candidates. Maximal degree in co-relation 16620. Up to 827 conditions per place. [2022-01-19 13:12:30,493 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 340 selfloop transitions, 166 changer transitions 60/707 dead transitions. [2022-01-19 13:12:30,494 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 904 places, 707 transitions, 16107 flow [2022-01-19 13:12:30,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:12:30,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:12:30,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4497 transitions. [2022-01-19 13:12:30,496 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764795918367347 [2022-01-19 13:12:30,496 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4497 transitions. [2022-01-19 13:12:30,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4497 transitions. [2022-01-19 13:12:30,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:30,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4497 transitions. [2022-01-19 13:12:30,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.60714285714286) internal successors, (4497), 28 states have internal predecessors, (4497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:30,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:30,501 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:30,501 INFO L186 Difference]: Start difference. First operand has 892 places, 661 transitions, 13953 flow. Second operand 28 states and 4497 transitions. [2022-01-19 13:12:30,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 904 places, 707 transitions, 16107 flow [2022-01-19 13:12:31,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 889 places, 707 transitions, 15705 flow, removed 50 selfloop flow, removed 15 redundant places. [2022-01-19 13:12:31,024 INFO L242 Difference]: Finished difference. Result has 898 places, 636 transitions, 13304 flow [2022-01-19 13:12:31,024 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13585, PETRI_DIFFERENCE_MINUEND_PLACES=862, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=13304, PETRI_PLACES=898, PETRI_TRANSITIONS=636} [2022-01-19 13:12:31,024 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 711 predicate places. [2022-01-19 13:12:31,024 INFO L470 AbstractCegarLoop]: Abstraction has has 898 places, 636 transitions, 13304 flow [2022-01-19 13:12:31,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:31,025 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:31,025 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:31,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2022-01-19 13:12:31,025 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:31,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:31,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2065755434, now seen corresponding path program 237 times [2022-01-19 13:12:31,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:31,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476531510] [2022-01-19 13:12:31,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:31,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:31,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:31,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:31,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476531510] [2022-01-19 13:12:31,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476531510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:31,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:31,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:31,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002821243] [2022-01-19 13:12:31,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:31,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:31,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:31,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:31,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:31,134 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:31,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 898 places, 636 transitions, 13304 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:31,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:31,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:31,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:32,339 INFO L129 PetriNetUnfolder]: 689/2618 cut-off events. [2022-01-19 13:12:32,340 INFO L130 PetriNetUnfolder]: For 51613/51626 co-relation queries the response was YES. [2022-01-19 13:12:32,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16719 conditions, 2618 events. 689/2618 cut-off events. For 51613/51626 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 20385 event pairs, 322 based on Foata normal form. 1/2524 useless extension candidates. Maximal degree in co-relation 16415. Up to 827 conditions per place. [2022-01-19 13:12:32,399 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 328 selfloop transitions, 165 changer transitions 58/692 dead transitions. [2022-01-19 13:12:32,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 894 places, 692 transitions, 15745 flow [2022-01-19 13:12:32,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:12:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:12:32,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-01-19 13:12:32,401 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-01-19 13:12:32,401 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-01-19 13:12:32,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-01-19 13:12:32,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:32,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-01-19 13:12:32,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:32,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:32,407 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:32,407 INFO L186 Difference]: Start difference. First operand has 898 places, 636 transitions, 13304 flow. Second operand 30 states and 4809 transitions. [2022-01-19 13:12:32,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 894 places, 692 transitions, 15745 flow [2022-01-19 13:12:32,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 860 places, 692 transitions, 14745 flow, removed 30 selfloop flow, removed 34 redundant places. [2022-01-19 13:12:32,874 INFO L242 Difference]: Finished difference. Result has 872 places, 623 transitions, 12509 flow [2022-01-19 13:12:32,874 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12419, PETRI_DIFFERENCE_MINUEND_PLACES=831, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=12509, PETRI_PLACES=872, PETRI_TRANSITIONS=623} [2022-01-19 13:12:32,875 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 685 predicate places. [2022-01-19 13:12:32,875 INFO L470 AbstractCegarLoop]: Abstraction has has 872 places, 623 transitions, 12509 flow [2022-01-19 13:12:32,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:32,875 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:32,875 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:32,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2022-01-19 13:12:32,875 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:32,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:32,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1405026256, now seen corresponding path program 238 times [2022-01-19 13:12:32,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:32,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480246400] [2022-01-19 13:12:32,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:32,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:32,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:32,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:32,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480246400] [2022-01-19 13:12:32,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480246400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:32,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:32,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:32,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778611109] [2022-01-19 13:12:32,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:32,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:32,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:32,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:32,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:32,990 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:32,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 872 places, 623 transitions, 12509 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:32,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:32,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:32,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:34,136 INFO L129 PetriNetUnfolder]: 662/2523 cut-off events. [2022-01-19 13:12:34,136 INFO L130 PetriNetUnfolder]: For 40439/40452 co-relation queries the response was YES. [2022-01-19 13:12:34,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15455 conditions, 2523 events. 662/2523 cut-off events. For 40439/40452 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 19419 event pairs, 312 based on Foata normal form. 1/2429 useless extension candidates. Maximal degree in co-relation 15157. Up to 821 conditions per place. [2022-01-19 13:12:34,192 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 310 selfloop transitions, 139 changer transitions 61/651 dead transitions. [2022-01-19 13:12:34,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 873 places, 651 transitions, 13911 flow [2022-01-19 13:12:34,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:12:34,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:12:34,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4639 transitions. [2022-01-19 13:12:34,194 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617405582922824 [2022-01-19 13:12:34,195 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4639 transitions. [2022-01-19 13:12:34,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4639 transitions. [2022-01-19 13:12:34,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:34,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4639 transitions. [2022-01-19 13:12:34,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.9655172413793) internal successors, (4639), 29 states have internal predecessors, (4639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:34,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:34,200 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:34,200 INFO L186 Difference]: Start difference. First operand has 872 places, 623 transitions, 12509 flow. Second operand 29 states and 4639 transitions. [2022-01-19 13:12:34,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 873 places, 651 transitions, 13911 flow [2022-01-19 13:12:34,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 842 places, 651 transitions, 13328 flow, removed 25 selfloop flow, removed 31 redundant places. [2022-01-19 13:12:34,617 INFO L242 Difference]: Finished difference. Result has 849 places, 579 transitions, 11049 flow [2022-01-19 13:12:34,617 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11953, PETRI_DIFFERENCE_MINUEND_PLACES=814, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11049, PETRI_PLACES=849, PETRI_TRANSITIONS=579} [2022-01-19 13:12:34,617 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 662 predicate places. [2022-01-19 13:12:34,617 INFO L470 AbstractCegarLoop]: Abstraction has has 849 places, 579 transitions, 11049 flow [2022-01-19 13:12:34,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:34,617 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:34,617 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:34,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2022-01-19 13:12:34,618 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:34,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:34,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1853911364, now seen corresponding path program 239 times [2022-01-19 13:12:34,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:34,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919775414] [2022-01-19 13:12:34,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:34,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:34,752 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 13:12:34,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:34,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919775414] [2022-01-19 13:12:34,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919775414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:34,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:34,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:34,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745774033] [2022-01-19 13:12:34,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:34,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:34,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:34,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:34,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:34,755 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:34,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 849 places, 579 transitions, 11049 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:34,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:34,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:34,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:35,939 INFO L129 PetriNetUnfolder]: 656/2519 cut-off events. [2022-01-19 13:12:35,940 INFO L130 PetriNetUnfolder]: For 39260/39273 co-relation queries the response was YES. [2022-01-19 13:12:35,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15129 conditions, 2519 events. 656/2519 cut-off events. For 39260/39273 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 19411 event pairs, 319 based on Foata normal form. 1/2426 useless extension candidates. Maximal degree in co-relation 14844. Up to 818 conditions per place. [2022-01-19 13:12:35,994 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 322 selfloop transitions, 127 changer transitions 58/648 dead transitions. [2022-01-19 13:12:35,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 826 places, 648 transitions, 13608 flow [2022-01-19 13:12:35,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:12:35,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:12:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 13:12:35,997 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 13:12:35,997 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 13:12:35,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 13:12:35,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:35,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 13:12:36,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:36,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:36,003 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:36,003 INFO L186 Difference]: Start difference. First operand has 849 places, 579 transitions, 11049 flow. Second operand 30 states and 4819 transitions. [2022-01-19 13:12:36,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 826 places, 648 transitions, 13608 flow [2022-01-19 13:12:36,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 648 transitions, 12467 flow, removed 26 selfloop flow, removed 34 redundant places. [2022-01-19 13:12:36,368 INFO L242 Difference]: Finished difference. Result has 799 places, 578 transitions, 10271 flow [2022-01-19 13:12:36,368 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10038, PETRI_DIFFERENCE_MINUEND_PLACES=763, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10271, PETRI_PLACES=799, PETRI_TRANSITIONS=578} [2022-01-19 13:12:36,369 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 612 predicate places. [2022-01-19 13:12:36,369 INFO L470 AbstractCegarLoop]: Abstraction has has 799 places, 578 transitions, 10271 flow [2022-01-19 13:12:36,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:36,369 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:36,369 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:36,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2022-01-19 13:12:36,369 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:36,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:36,369 INFO L85 PathProgramCache]: Analyzing trace with hash -681707706, now seen corresponding path program 240 times [2022-01-19 13:12:36,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:36,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864644430] [2022-01-19 13:12:36,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:36,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:36,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:36,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864644430] [2022-01-19 13:12:36,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864644430] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:36,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:36,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:36,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742424887] [2022-01-19 13:12:36,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:36,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:36,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:36,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:36,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:36,470 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:36,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 799 places, 578 transitions, 10271 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:36,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:36,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:36,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:37,532 INFO L129 PetriNetUnfolder]: 641/2470 cut-off events. [2022-01-19 13:12:37,532 INFO L130 PetriNetUnfolder]: For 34067/34080 co-relation queries the response was YES. [2022-01-19 13:12:37,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14032 conditions, 2470 events. 641/2470 cut-off events. For 34067/34080 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 18917 event pairs, 298 based on Foata normal form. 1/2381 useless extension candidates. Maximal degree in co-relation 13760. Up to 814 conditions per place. [2022-01-19 13:12:37,581 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 331 selfloop transitions, 114 changer transitions 63/649 dead transitions. [2022-01-19 13:12:37,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 813 places, 649 transitions, 12274 flow [2022-01-19 13:12:37,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:12:37,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:12:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4806 transitions. [2022-01-19 13:12:37,584 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628571428571429 [2022-01-19 13:12:37,584 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4806 transitions. [2022-01-19 13:12:37,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4806 transitions. [2022-01-19 13:12:37,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:37,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4806 transitions. [2022-01-19 13:12:37,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.2) internal successors, (4806), 30 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:37,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:37,589 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:37,589 INFO L186 Difference]: Start difference. First operand has 799 places, 578 transitions, 10271 flow. Second operand 30 states and 4806 transitions. [2022-01-19 13:12:37,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 813 places, 649 transitions, 12274 flow [2022-01-19 13:12:37,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 786 places, 649 transitions, 11807 flow, removed 64 selfloop flow, removed 27 redundant places. [2022-01-19 13:12:37,910 INFO L242 Difference]: Finished difference. Result has 796 places, 553 transitions, 9556 flow [2022-01-19 13:12:37,910 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9830, PETRI_DIFFERENCE_MINUEND_PLACES=757, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9556, PETRI_PLACES=796, PETRI_TRANSITIONS=553} [2022-01-19 13:12:37,911 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 609 predicate places. [2022-01-19 13:12:37,911 INFO L470 AbstractCegarLoop]: Abstraction has has 796 places, 553 transitions, 9556 flow [2022-01-19 13:12:37,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:37,911 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:37,911 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:37,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2022-01-19 13:12:37,911 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:37,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:37,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1626717332, now seen corresponding path program 241 times [2022-01-19 13:12:37,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:37,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659842848] [2022-01-19 13:12:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:37,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:38,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:38,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:38,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659842848] [2022-01-19 13:12:38,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659842848] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:38,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:38,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:38,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206180420] [2022-01-19 13:12:38,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:38,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:38,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:38,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:38,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:38,027 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:38,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 553 transitions, 9556 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:38,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:38,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:38,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:39,002 INFO L129 PetriNetUnfolder]: 610/2354 cut-off events. [2022-01-19 13:12:39,002 INFO L130 PetriNetUnfolder]: For 28125/28138 co-relation queries the response was YES. [2022-01-19 13:12:39,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13118 conditions, 2354 events. 610/2354 cut-off events. For 28125/28138 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 17849 event pairs, 294 based on Foata normal form. 1/2264 useless extension candidates. Maximal degree in co-relation 12855. Up to 805 conditions per place. [2022-01-19 13:12:39,049 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 309 selfloop transitions, 85 changer transitions 65/600 dead transitions. [2022-01-19 13:12:39,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 790 places, 600 transitions, 10783 flow [2022-01-19 13:12:39,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:12:39,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:12:39,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4476 transitions. [2022-01-19 13:12:39,052 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612244897959184 [2022-01-19 13:12:39,052 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4476 transitions. [2022-01-19 13:12:39,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4476 transitions. [2022-01-19 13:12:39,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:39,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4476 transitions. [2022-01-19 13:12:39,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 159.85714285714286) internal successors, (4476), 28 states have internal predecessors, (4476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:39,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:39,057 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:39,057 INFO L186 Difference]: Start difference. First operand has 796 places, 553 transitions, 9556 flow. Second operand 28 states and 4476 transitions. [2022-01-19 13:12:39,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 790 places, 600 transitions, 10783 flow [2022-01-19 13:12:39,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 759 places, 600 transitions, 10204 flow, removed 22 selfloop flow, removed 31 redundant places. [2022-01-19 13:12:39,356 INFO L242 Difference]: Finished difference. Result has 764 places, 502 transitions, 7970 flow [2022-01-19 13:12:39,356 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8995, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7970, PETRI_PLACES=764, PETRI_TRANSITIONS=502} [2022-01-19 13:12:39,357 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 577 predicate places. [2022-01-19 13:12:39,357 INFO L470 AbstractCegarLoop]: Abstraction has has 764 places, 502 transitions, 7970 flow [2022-01-19 13:12:39,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:39,357 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:39,357 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:39,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2022-01-19 13:12:39,357 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:39,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:39,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1293276046, now seen corresponding path program 242 times [2022-01-19 13:12:39,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:39,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786873040] [2022-01-19 13:12:39,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:39,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:39,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:39,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:39,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786873040] [2022-01-19 13:12:39,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786873040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:39,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:39,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:39,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066021595] [2022-01-19 13:12:39,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:39,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:39,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:39,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:39,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:39,467 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:39,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 764 places, 502 transitions, 7970 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:39,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:39,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:39,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:40,541 INFO L129 PetriNetUnfolder]: 609/2357 cut-off events. [2022-01-19 13:12:40,541 INFO L130 PetriNetUnfolder]: For 26736/26749 co-relation queries the response was YES. [2022-01-19 13:12:40,582 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12670 conditions, 2357 events. 609/2357 cut-off events. For 26736/26749 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 17821 event pairs, 298 based on Foata normal form. 1/2270 useless extension candidates. Maximal degree in co-relation 12420. Up to 805 conditions per place. [2022-01-19 13:12:40,589 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 294 selfloop transitions, 89 changer transitions 70/594 dead transitions. [2022-01-19 13:12:40,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 737 places, 594 transitions, 10429 flow [2022-01-19 13:12:40,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:12:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:12:40,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5598 transitions. [2022-01-19 13:12:40,591 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616326530612245 [2022-01-19 13:12:40,591 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5598 transitions. [2022-01-19 13:12:40,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5598 transitions. [2022-01-19 13:12:40,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:40,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5598 transitions. [2022-01-19 13:12:40,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 159.94285714285715) internal successors, (5598), 35 states have internal predecessors, (5598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:40,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:40,598 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:40,598 INFO L186 Difference]: Start difference. First operand has 764 places, 502 transitions, 7970 flow. Second operand 35 states and 5598 transitions. [2022-01-19 13:12:40,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 737 places, 594 transitions, 10429 flow [2022-01-19 13:12:40,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 708 places, 594 transitions, 9486 flow, removed 28 selfloop flow, removed 29 redundant places. [2022-01-19 13:12:40,858 INFO L242 Difference]: Finished difference. Result has 725 places, 497 transitions, 7312 flow [2022-01-19 13:12:40,858 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7192, PETRI_DIFFERENCE_MINUEND_PLACES=674, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=7312, PETRI_PLACES=725, PETRI_TRANSITIONS=497} [2022-01-19 13:12:40,859 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 538 predicate places. [2022-01-19 13:12:40,859 INFO L470 AbstractCegarLoop]: Abstraction has has 725 places, 497 transitions, 7312 flow [2022-01-19 13:12:40,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:40,859 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:40,859 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:40,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2022-01-19 13:12:40,859 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:40,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:40,859 INFO L85 PathProgramCache]: Analyzing trace with hash -674375430, now seen corresponding path program 243 times [2022-01-19 13:12:40,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:40,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164970617] [2022-01-19 13:12:40,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:40,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:40,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:40,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164970617] [2022-01-19 13:12:40,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164970617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:40,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:40,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:40,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982845265] [2022-01-19 13:12:40,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:40,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:40,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:40,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:40,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:40,967 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:40,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 725 places, 497 transitions, 7312 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:40,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:40,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:40,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:41,989 INFO L129 PetriNetUnfolder]: 598/2329 cut-off events. [2022-01-19 13:12:41,989 INFO L130 PetriNetUnfolder]: For 24119/24132 co-relation queries the response was YES. [2022-01-19 13:12:42,030 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11679 conditions, 2329 events. 598/2329 cut-off events. For 24119/24132 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 17514 event pairs, 302 based on Foata normal form. 1/2242 useless extension candidates. Maximal degree in co-relation 11428. Up to 803 conditions per place. [2022-01-19 13:12:42,036 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 287 selfloop transitions, 78 changer transitions 62/568 dead transitions. [2022-01-19 13:12:42,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 732 places, 568 transitions, 9235 flow [2022-01-19 13:12:42,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:12:42,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:12:42,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4653 transitions. [2022-01-19 13:12:42,039 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640394088669951 [2022-01-19 13:12:42,039 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4653 transitions. [2022-01-19 13:12:42,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4653 transitions. [2022-01-19 13:12:42,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:42,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4653 transitions. [2022-01-19 13:12:42,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.44827586206895) internal successors, (4653), 29 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:42,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:42,044 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:42,044 INFO L186 Difference]: Start difference. First operand has 725 places, 497 transitions, 7312 flow. Second operand 29 states and 4653 transitions. [2022-01-19 13:12:42,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 732 places, 568 transitions, 9235 flow [2022-01-19 13:12:42,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 695 places, 568 transitions, 8860 flow, removed 37 selfloop flow, removed 37 redundant places. [2022-01-19 13:12:42,258 INFO L242 Difference]: Finished difference. Result has 706 places, 484 transitions, 6931 flow [2022-01-19 13:12:42,258 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6997, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6931, PETRI_PLACES=706, PETRI_TRANSITIONS=484} [2022-01-19 13:12:42,258 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 519 predicate places. [2022-01-19 13:12:42,258 INFO L470 AbstractCegarLoop]: Abstraction has has 706 places, 484 transitions, 6931 flow [2022-01-19 13:12:42,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:42,258 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:42,259 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:42,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2022-01-19 13:12:42,259 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:42,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:42,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1860517572, now seen corresponding path program 244 times [2022-01-19 13:12:42,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:42,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599669524] [2022-01-19 13:12:42,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:42,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:42,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:42,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599669524] [2022-01-19 13:12:42,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599669524] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:42,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:42,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:42,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754389585] [2022-01-19 13:12:42,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:42,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:42,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:42,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:42,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:42,366 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:42,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 706 places, 484 transitions, 6931 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:42,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:42,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:42,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:43,324 INFO L129 PetriNetUnfolder]: 591/2309 cut-off events. [2022-01-19 13:12:43,324 INFO L130 PetriNetUnfolder]: For 23466/23479 co-relation queries the response was YES. [2022-01-19 13:12:43,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11371 conditions, 2309 events. 591/2309 cut-off events. For 23466/23479 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17387 event pairs, 294 based on Foata normal form. 1/2221 useless extension candidates. Maximal degree in co-relation 11134. Up to 801 conditions per place. [2022-01-19 13:12:43,366 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 276 selfloop transitions, 76 changer transitions 62/555 dead transitions. [2022-01-19 13:12:43,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 555 transitions, 8824 flow [2022-01-19 13:12:43,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:12:43,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:12:43,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4653 transitions. [2022-01-19 13:12:43,369 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640394088669951 [2022-01-19 13:12:43,369 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4653 transitions. [2022-01-19 13:12:43,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4653 transitions. [2022-01-19 13:12:43,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:43,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4653 transitions. [2022-01-19 13:12:43,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.44827586206895) internal successors, (4653), 29 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:43,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:43,375 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:43,375 INFO L186 Difference]: Start difference. First operand has 706 places, 484 transitions, 6931 flow. Second operand 29 states and 4653 transitions. [2022-01-19 13:12:43,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 555 transitions, 8824 flow [2022-01-19 13:12:43,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 555 transitions, 8494 flow, removed 20 selfloop flow, removed 28 redundant places. [2022-01-19 13:12:43,581 INFO L242 Difference]: Finished difference. Result has 691 places, 471 transitions, 6599 flow [2022-01-19 13:12:43,581 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6659, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6599, PETRI_PLACES=691, PETRI_TRANSITIONS=471} [2022-01-19 13:12:43,581 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 504 predicate places. [2022-01-19 13:12:43,581 INFO L470 AbstractCegarLoop]: Abstraction has has 691 places, 471 transitions, 6599 flow [2022-01-19 13:12:43,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:43,582 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:43,582 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:43,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2022-01-19 13:12:43,582 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:43,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:43,582 INFO L85 PathProgramCache]: Analyzing trace with hash -242289566, now seen corresponding path program 245 times [2022-01-19 13:12:43,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:43,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208108846] [2022-01-19 13:12:43,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:43,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:43,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:43,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:43,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208108846] [2022-01-19 13:12:43,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208108846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:43,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:43,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:43,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277572492] [2022-01-19 13:12:43,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:43,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:43,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:43,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:43,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:43,693 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:43,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 471 transitions, 6599 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:43,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:43,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:43,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:44,649 INFO L129 PetriNetUnfolder]: 564/2209 cut-off events. [2022-01-19 13:12:44,649 INFO L130 PetriNetUnfolder]: For 20147/20160 co-relation queries the response was YES. [2022-01-19 13:12:44,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10559 conditions, 2209 events. 564/2209 cut-off events. For 20147/20160 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 16312 event pairs, 296 based on Foata normal form. 1/2123 useless extension candidates. Maximal degree in co-relation 10326. Up to 794 conditions per place. [2022-01-19 13:12:44,690 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 51 changer transitions 65/514 dead transitions. [2022-01-19 13:12:44,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 514 transitions, 7739 flow [2022-01-19 13:12:44,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:12:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:12:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4796 transitions. [2022-01-19 13:12:44,693 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612698412698413 [2022-01-19 13:12:44,693 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4796 transitions. [2022-01-19 13:12:44,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4796 transitions. [2022-01-19 13:12:44,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:44,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4796 transitions. [2022-01-19 13:12:44,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.86666666666667) internal successors, (4796), 30 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:44,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:44,699 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:44,699 INFO L186 Difference]: Start difference. First operand has 691 places, 471 transitions, 6599 flow. Second operand 30 states and 4796 transitions. [2022-01-19 13:12:44,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 514 transitions, 7739 flow [2022-01-19 13:12:44,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 514 transitions, 7444 flow, removed 20 selfloop flow, removed 28 redundant places. [2022-01-19 13:12:44,871 INFO L242 Difference]: Finished difference. Result has 673 places, 427 transitions, 5564 flow [2022-01-19 13:12:44,871 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6332, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5564, PETRI_PLACES=673, PETRI_TRANSITIONS=427} [2022-01-19 13:12:44,872 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 486 predicate places. [2022-01-19 13:12:44,872 INFO L470 AbstractCegarLoop]: Abstraction has has 673 places, 427 transitions, 5564 flow [2022-01-19 13:12:44,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:44,872 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:44,872 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:44,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2022-01-19 13:12:44,872 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:44,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:44,872 INFO L85 PathProgramCache]: Analyzing trace with hash -845688752, now seen corresponding path program 246 times [2022-01-19 13:12:44,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:44,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314595803] [2022-01-19 13:12:44,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:44,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:44,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:44,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:44,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314595803] [2022-01-19 13:12:44,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314595803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:44,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:44,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:44,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752678322] [2022-01-19 13:12:44,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:44,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:44,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:44,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:44,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:44,981 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:44,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 427 transitions, 5564 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:44,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:44,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:44,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:45,875 INFO L129 PetriNetUnfolder]: 533/2087 cut-off events. [2022-01-19 13:12:45,875 INFO L130 PetriNetUnfolder]: For 16973/16986 co-relation queries the response was YES. [2022-01-19 13:12:45,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9613 conditions, 2087 events. 533/2087 cut-off events. For 16973/16986 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 15041 event pairs, 291 based on Foata normal form. 1/2002 useless extension candidates. Maximal degree in co-relation 9388. Up to 785 conditions per place. [2022-01-19 13:12:45,912 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 223 selfloop transitions, 32 changer transitions 66/462 dead transitions. [2022-01-19 13:12:45,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 462 transitions, 6419 flow [2022-01-19 13:12:45,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:12:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:12:45,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4779 transitions. [2022-01-19 13:12:45,915 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7585714285714286 [2022-01-19 13:12:45,915 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4779 transitions. [2022-01-19 13:12:45,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4779 transitions. [2022-01-19 13:12:45,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:45,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4779 transitions. [2022-01-19 13:12:45,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.3) internal successors, (4779), 30 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:45,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:45,921 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:45,921 INFO L186 Difference]: Start difference. First operand has 673 places, 427 transitions, 5564 flow. Second operand 30 states and 4779 transitions. [2022-01-19 13:12:45,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 462 transitions, 6419 flow [2022-01-19 13:12:46,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 462 transitions, 6077 flow, removed 17 selfloop flow, removed 28 redundant places. [2022-01-19 13:12:46,065 INFO L242 Difference]: Finished difference. Result has 628 places, 374 transitions, 4310 flow [2022-01-19 13:12:46,066 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5235, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4310, PETRI_PLACES=628, PETRI_TRANSITIONS=374} [2022-01-19 13:12:46,066 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 441 predicate places. [2022-01-19 13:12:46,066 INFO L470 AbstractCegarLoop]: Abstraction has has 628 places, 374 transitions, 4310 flow [2022-01-19 13:12:46,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:46,066 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:46,066 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:46,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2022-01-19 13:12:46,066 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:46,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:46,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1565416138, now seen corresponding path program 247 times [2022-01-19 13:12:46,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:46,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197300945] [2022-01-19 13:12:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:46,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:46,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:46,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:46,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197300945] [2022-01-19 13:12:46,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197300945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:46,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:46,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:46,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436491680] [2022-01-19 13:12:46,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:46,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:46,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:46,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:46,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:46,181 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:46,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 374 transitions, 4310 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:46,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:46,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:46,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:47,159 INFO L129 PetriNetUnfolder]: 532/2109 cut-off events. [2022-01-19 13:12:47,160 INFO L130 PetriNetUnfolder]: For 15026/15039 co-relation queries the response was YES. [2022-01-19 13:12:47,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9354 conditions, 2109 events. 532/2109 cut-off events. For 15026/15039 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 15281 event pairs, 281 based on Foata normal form. 1/2027 useless extension candidates. Maximal degree in co-relation 9138. Up to 785 conditions per place. [2022-01-19 13:12:47,196 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 178 selfloop transitions, 66 changer transitions 68/453 dead transitions. [2022-01-19 13:12:47,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 453 transitions, 6164 flow [2022-01-19 13:12:47,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:12:47,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:12:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5750 transitions. [2022-01-19 13:12:47,199 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7605820105820106 [2022-01-19 13:12:47,199 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5750 transitions. [2022-01-19 13:12:47,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5750 transitions. [2022-01-19 13:12:47,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:47,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5750 transitions. [2022-01-19 13:12:47,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 159.72222222222223) internal successors, (5750), 36 states have internal predecessors, (5750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:47,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:47,207 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:47,207 INFO L186 Difference]: Start difference. First operand has 628 places, 374 transitions, 4310 flow. Second operand 36 states and 5750 transitions. [2022-01-19 13:12:47,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 453 transitions, 6164 flow [2022-01-19 13:12:47,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 453 transitions, 5763 flow, removed 30 selfloop flow, removed 25 redundant places. [2022-01-19 13:12:47,321 INFO L242 Difference]: Finished difference. Result has 587 places, 369 transitions, 4110 flow [2022-01-19 13:12:47,322 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4016, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4110, PETRI_PLACES=587, PETRI_TRANSITIONS=369} [2022-01-19 13:12:47,322 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 400 predicate places. [2022-01-19 13:12:47,322 INFO L470 AbstractCegarLoop]: Abstraction has has 587 places, 369 transitions, 4110 flow [2022-01-19 13:12:47,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:47,322 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:47,322 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:47,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2022-01-19 13:12:47,322 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:47,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:47,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1065282028, now seen corresponding path program 248 times [2022-01-19 13:12:47,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:47,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178465744] [2022-01-19 13:12:47,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:47,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:47,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:47,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:47,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178465744] [2022-01-19 13:12:47,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178465744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:47,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:47,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:47,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753620675] [2022-01-19 13:12:47,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:47,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:47,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:47,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:47,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:47,436 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:47,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 369 transitions, 4110 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:47,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:47,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:47,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:48,320 INFO L129 PetriNetUnfolder]: 519/2060 cut-off events. [2022-01-19 13:12:48,320 INFO L130 PetriNetUnfolder]: For 13174/13187 co-relation queries the response was YES. [2022-01-19 13:12:48,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8768 conditions, 2060 events. 519/2060 cut-off events. For 13174/13187 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14827 event pairs, 294 based on Foata normal form. 1/1975 useless extension candidates. Maximal degree in co-relation 8551. Up to 783 conditions per place. [2022-01-19 13:12:48,354 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 163 selfloop transitions, 63 changer transitions 60/427 dead transitions. [2022-01-19 13:12:48,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 427 transitions, 5532 flow [2022-01-19 13:12:48,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:12:48,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:12:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4812 transitions. [2022-01-19 13:12:48,357 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638095238095238 [2022-01-19 13:12:48,357 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4812 transitions. [2022-01-19 13:12:48,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4812 transitions. [2022-01-19 13:12:48,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:48,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4812 transitions. [2022-01-19 13:12:48,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.4) internal successors, (4812), 30 states have internal predecessors, (4812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:48,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:48,363 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:48,363 INFO L186 Difference]: Start difference. First operand has 587 places, 369 transitions, 4110 flow. Second operand 30 states and 4812 transitions. [2022-01-19 13:12:48,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 427 transitions, 5532 flow [2022-01-19 13:12:48,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 427 transitions, 5250 flow, removed 34 selfloop flow, removed 35 redundant places. [2022-01-19 13:12:48,461 INFO L242 Difference]: Finished difference. Result has 571 places, 356 transitions, 3788 flow [2022-01-19 13:12:48,461 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3869, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3788, PETRI_PLACES=571, PETRI_TRANSITIONS=356} [2022-01-19 13:12:48,462 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 384 predicate places. [2022-01-19 13:12:48,462 INFO L470 AbstractCegarLoop]: Abstraction has has 571 places, 356 transitions, 3788 flow [2022-01-19 13:12:48,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:48,462 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:48,462 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:48,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2022-01-19 13:12:48,462 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:48,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:48,462 INFO L85 PathProgramCache]: Analyzing trace with hash 198379456, now seen corresponding path program 249 times [2022-01-19 13:12:48,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:48,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509525281] [2022-01-19 13:12:48,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:48,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:48,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:48,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:48,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509525281] [2022-01-19 13:12:48,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509525281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:48,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:48,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:48,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699309919] [2022-01-19 13:12:48,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:48,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:48,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:48,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:48,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:48,586 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:48,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 356 transitions, 3788 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:48,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:48,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:48,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:49,473 INFO L129 PetriNetUnfolder]: 514/2038 cut-off events. [2022-01-19 13:12:49,474 INFO L130 PetriNetUnfolder]: For 13056/13069 co-relation queries the response was YES. [2022-01-19 13:12:49,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8489 conditions, 2038 events. 514/2038 cut-off events. For 13056/13069 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14637 event pairs, 285 based on Foata normal form. 1/1955 useless extension candidates. Maximal degree in co-relation 8283. Up to 781 conditions per place. [2022-01-19 13:12:49,499 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 159 selfloop transitions, 54 changer transitions 60/414 dead transitions. [2022-01-19 13:12:49,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 414 transitions, 5170 flow [2022-01-19 13:12:49,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:12:49,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:12:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4805 transitions. [2022-01-19 13:12:49,501 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626984126984127 [2022-01-19 13:12:49,501 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4805 transitions. [2022-01-19 13:12:49,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4805 transitions. [2022-01-19 13:12:49,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:49,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4805 transitions. [2022-01-19 13:12:49,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.16666666666666) internal successors, (4805), 30 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:49,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:49,507 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:49,507 INFO L186 Difference]: Start difference. First operand has 571 places, 356 transitions, 3788 flow. Second operand 30 states and 4805 transitions. [2022-01-19 13:12:49,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 414 transitions, 5170 flow [2022-01-19 13:12:49,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 414 transitions, 4903 flow, removed 23 selfloop flow, removed 29 redundant places. [2022-01-19 13:12:49,590 INFO L242 Difference]: Finished difference. Result has 556 places, 343 transitions, 3486 flow [2022-01-19 13:12:49,590 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3568, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3486, PETRI_PLACES=556, PETRI_TRANSITIONS=343} [2022-01-19 13:12:49,590 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 369 predicate places. [2022-01-19 13:12:49,590 INFO L470 AbstractCegarLoop]: Abstraction has has 556 places, 343 transitions, 3486 flow [2022-01-19 13:12:49,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:49,591 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:49,591 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:49,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2022-01-19 13:12:49,591 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:49,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:49,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1992795230, now seen corresponding path program 250 times [2022-01-19 13:12:49,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:49,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623210879] [2022-01-19 13:12:49,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:49,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:49,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:49,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623210879] [2022-01-19 13:12:49,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623210879] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:49,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:49,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:49,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178957338] [2022-01-19 13:12:49,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:49,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:49,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:49,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:49,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:49,700 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:49,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 343 transitions, 3486 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:49,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:49,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:49,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:50,453 INFO L129 PetriNetUnfolder]: 483/1937 cut-off events. [2022-01-19 13:12:50,453 INFO L130 PetriNetUnfolder]: For 10762/10775 co-relation queries the response was YES. [2022-01-19 13:12:50,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7726 conditions, 1937 events. 483/1937 cut-off events. For 10762/10775 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13610 event pairs, 289 based on Foata normal form. 1/1854 useless extension candidates. Maximal degree in co-relation 7526. Up to 774 conditions per place. [2022-01-19 13:12:50,484 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 140 selfloop transitions, 25 changer transitions 64/370 dead transitions. [2022-01-19 13:12:50,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 370 transitions, 4157 flow [2022-01-19 13:12:50,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:12:50,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:12:50,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4631 transitions. [2022-01-19 13:12:50,486 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604269293924466 [2022-01-19 13:12:50,486 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4631 transitions. [2022-01-19 13:12:50,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4631 transitions. [2022-01-19 13:12:50,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:50,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4631 transitions. [2022-01-19 13:12:50,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.68965517241378) internal successors, (4631), 29 states have internal predecessors, (4631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:50,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:50,492 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:50,492 INFO L186 Difference]: Start difference. First operand has 556 places, 343 transitions, 3486 flow. Second operand 29 states and 4631 transitions. [2022-01-19 13:12:50,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 370 transitions, 4157 flow [2022-01-19 13:12:50,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 370 transitions, 3943 flow, removed 22 selfloop flow, removed 29 redundant places. [2022-01-19 13:12:50,564 INFO L242 Difference]: Finished difference. Result has 535 places, 295 transitions, 2515 flow [2022-01-19 13:12:50,564 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3292, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2515, PETRI_PLACES=535, PETRI_TRANSITIONS=295} [2022-01-19 13:12:50,564 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 348 predicate places. [2022-01-19 13:12:50,564 INFO L470 AbstractCegarLoop]: Abstraction has has 535 places, 295 transitions, 2515 flow [2022-01-19 13:12:50,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:50,565 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:50,565 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:50,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2022-01-19 13:12:50,565 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:50,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:50,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1665717460, now seen corresponding path program 251 times [2022-01-19 13:12:50,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:50,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116412006] [2022-01-19 13:12:50,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:50,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:50,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:50,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:50,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116412006] [2022-01-19 13:12:50,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116412006] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:50,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:50,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:50,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403660892] [2022-01-19 13:12:50,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:50,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:50,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:50,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:50,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:50,676 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:50,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 295 transitions, 2515 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:50,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:50,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:50,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:51,392 INFO L129 PetriNetUnfolder]: 458/1847 cut-off events. [2022-01-19 13:12:51,392 INFO L130 PetriNetUnfolder]: For 8843/8856 co-relation queries the response was YES. [2022-01-19 13:12:51,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7040 conditions, 1847 events. 458/1847 cut-off events. For 8843/8856 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 12819 event pairs, 272 based on Foata normal form. 1/1767 useless extension candidates. Maximal degree in co-relation 6851. Up to 769 conditions per place. [2022-01-19 13:12:51,419 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 102 selfloop transitions, 27 changer transitions 62/332 dead transitions. [2022-01-19 13:12:51,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 332 transitions, 3298 flow [2022-01-19 13:12:51,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:12:51,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:12:51,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4636 transitions. [2022-01-19 13:12:51,422 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.761247947454844 [2022-01-19 13:12:51,422 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4636 transitions. [2022-01-19 13:12:51,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4636 transitions. [2022-01-19 13:12:51,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:51,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4636 transitions. [2022-01-19 13:12:51,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.86206896551724) internal successors, (4636), 29 states have internal predecessors, (4636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:51,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:51,428 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:51,428 INFO L186 Difference]: Start difference. First operand has 535 places, 295 transitions, 2515 flow. Second operand 29 states and 4636 transitions. [2022-01-19 13:12:51,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 332 transitions, 3298 flow [2022-01-19 13:12:51,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 332 transitions, 3062 flow, removed 21 selfloop flow, removed 26 redundant places. [2022-01-19 13:12:51,477 INFO L242 Difference]: Finished difference. Result has 486 places, 259 transitions, 1781 flow [2022-01-19 13:12:51,477 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2334, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1781, PETRI_PLACES=486, PETRI_TRANSITIONS=259} [2022-01-19 13:12:51,478 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 299 predicate places. [2022-01-19 13:12:51,478 INFO L470 AbstractCegarLoop]: Abstraction has has 486 places, 259 transitions, 1781 flow [2022-01-19 13:12:51,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:51,478 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:51,478 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:51,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2022-01-19 13:12:51,478 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:51,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:51,478 INFO L85 PathProgramCache]: Analyzing trace with hash -946555676, now seen corresponding path program 252 times [2022-01-19 13:12:51,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:51,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049460894] [2022-01-19 13:12:51,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:51,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:51,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:51,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:51,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049460894] [2022-01-19 13:12:51,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049460894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:51,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:51,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:51,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276924812] [2022-01-19 13:12:51,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:51,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:51,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:51,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:51,588 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:51,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 259 transitions, 1781 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:51,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:51,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:51,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:52,232 INFO L129 PetriNetUnfolder]: 427/1701 cut-off events. [2022-01-19 13:12:52,232 INFO L130 PetriNetUnfolder]: For 6641/6654 co-relation queries the response was YES. [2022-01-19 13:12:52,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6149 conditions, 1701 events. 427/1701 cut-off events. For 6641/6654 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 11493 event pairs, 278 based on Foata normal form. 1/1621 useless extension candidates. Maximal degree in co-relation 5966. Up to 744 conditions per place. [2022-01-19 13:12:52,255 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 72 selfloop transitions, 2 changer transitions 66/281 dead transitions. [2022-01-19 13:12:52,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 281 transitions, 2189 flow [2022-01-19 13:12:52,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:12:52,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:12:52,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4769 transitions. [2022-01-19 13:12:52,258 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.756984126984127 [2022-01-19 13:12:52,258 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4769 transitions. [2022-01-19 13:12:52,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4769 transitions. [2022-01-19 13:12:52,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:52,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4769 transitions. [2022-01-19 13:12:52,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 158.96666666666667) internal successors, (4769), 30 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:52,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:52,264 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:52,264 INFO L186 Difference]: Start difference. First operand has 486 places, 259 transitions, 1781 flow. Second operand 30 states and 4769 transitions. [2022-01-19 13:12:52,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 281 transitions, 2189 flow [2022-01-19 13:12:52,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 281 transitions, 2032 flow, removed 18 selfloop flow, removed 28 redundant places. [2022-01-19 13:12:52,301 INFO L242 Difference]: Finished difference. Result has 448 places, 204 transitions, 806 flow [2022-01-19 13:12:52,301 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=806, PETRI_PLACES=448, PETRI_TRANSITIONS=204} [2022-01-19 13:12:52,301 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 261 predicate places. [2022-01-19 13:12:52,301 INFO L470 AbstractCegarLoop]: Abstraction has has 448 places, 204 transitions, 806 flow [2022-01-19 13:12:52,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:52,301 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:52,302 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:52,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2022-01-19 13:12:52,302 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:52,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:52,302 INFO L85 PathProgramCache]: Analyzing trace with hash -673647796, now seen corresponding path program 1 times [2022-01-19 13:12:52,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:52,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374318173] [2022-01-19 13:12:52,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:52,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:52,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:52,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374318173] [2022-01-19 13:12:52,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374318173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:52,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:52,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:52,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903672201] [2022-01-19 13:12:52,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:52,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:52,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:52,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:52,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:52,417 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:52,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 204 transitions, 806 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:52,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:52,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:52,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:53,443 INFO L129 PetriNetUnfolder]: 646/2345 cut-off events. [2022-01-19 13:12:53,443 INFO L130 PetriNetUnfolder]: For 6778/6801 co-relation queries the response was YES. [2022-01-19 13:12:53,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7683 conditions, 2345 events. 646/2345 cut-off events. For 6778/6801 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 16870 event pairs, 351 based on Foata normal form. 2/2252 useless extension candidates. Maximal degree in co-relation 7510. Up to 929 conditions per place. [2022-01-19 13:12:53,475 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 148 selfloop transitions, 22 changer transitions 92/404 dead transitions. [2022-01-19 13:12:53,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 404 transitions, 2580 flow [2022-01-19 13:12:53,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-19 13:12:53,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-01-19 13:12:53,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8295 transitions. [2022-01-19 13:12:53,478 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7596153846153846 [2022-01-19 13:12:53,478 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8295 transitions. [2022-01-19 13:12:53,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8295 transitions. [2022-01-19 13:12:53,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:53,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8295 transitions. [2022-01-19 13:12:53,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.51923076923077) internal successors, (8295), 52 states have internal predecessors, (8295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:53,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:53,488 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:53,488 INFO L186 Difference]: Start difference. First operand has 448 places, 204 transitions, 806 flow. Second operand 52 states and 8295 transitions. [2022-01-19 13:12:53,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 404 transitions, 2580 flow [2022-01-19 13:12:53,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 404 transitions, 2500 flow, removed 33 selfloop flow, removed 32 redundant places. [2022-01-19 13:12:53,515 INFO L242 Difference]: Finished difference. Result has 434 places, 227 transitions, 1050 flow [2022-01-19 13:12:53,515 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=1050, PETRI_PLACES=434, PETRI_TRANSITIONS=227} [2022-01-19 13:12:53,515 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 247 predicate places. [2022-01-19 13:12:53,515 INFO L470 AbstractCegarLoop]: Abstraction has has 434 places, 227 transitions, 1050 flow [2022-01-19 13:12:53,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:53,515 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:53,515 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:53,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2022-01-19 13:12:53,515 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:53,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:53,516 INFO L85 PathProgramCache]: Analyzing trace with hash -289802090, now seen corresponding path program 2 times [2022-01-19 13:12:53,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:53,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141307335] [2022-01-19 13:12:53,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:53,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:53,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:53,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:53,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141307335] [2022-01-19 13:12:53,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141307335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:53,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:53,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:53,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110047718] [2022-01-19 13:12:53,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:53,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:53,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:53,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:53,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:53,600 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:53,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 227 transitions, 1050 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:53,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:53,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:53,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:54,547 INFO L129 PetriNetUnfolder]: 719/2582 cut-off events. [2022-01-19 13:12:54,547 INFO L130 PetriNetUnfolder]: For 26477/26508 co-relation queries the response was YES. [2022-01-19 13:12:54,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12263 conditions, 2582 events. 719/2582 cut-off events. For 26477/26508 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 19273 event pairs, 219 based on Foata normal form. 6/2494 useless extension candidates. Maximal degree in co-relation 12073. Up to 555 conditions per place. [2022-01-19 13:12:54,586 INFO L132 encePairwiseOnDemand]: 187/210 looper letters, 146 selfloop transitions, 50 changer transitions 144/482 dead transitions. [2022-01-19 13:12:54,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 482 transitions, 4297 flow [2022-01-19 13:12:54,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-19 13:12:54,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-01-19 13:12:54,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5513 transitions. [2022-01-19 13:12:54,589 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7721288515406163 [2022-01-19 13:12:54,589 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5513 transitions. [2022-01-19 13:12:54,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5513 transitions. [2022-01-19 13:12:54,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:54,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5513 transitions. [2022-01-19 13:12:54,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 162.14705882352942) internal successors, (5513), 34 states have internal predecessors, (5513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:54,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:54,595 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:54,595 INFO L186 Difference]: Start difference. First operand has 434 places, 227 transitions, 1050 flow. Second operand 34 states and 5513 transitions. [2022-01-19 13:12:54,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 482 transitions, 4297 flow [2022-01-19 13:12:54,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 482 transitions, 3627 flow, removed 335 selfloop flow, removed 28 redundant places. [2022-01-19 13:12:54,669 INFO L242 Difference]: Finished difference. Result has 427 places, 250 transitions, 1512 flow [2022-01-19 13:12:54,669 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1512, PETRI_PLACES=427, PETRI_TRANSITIONS=250} [2022-01-19 13:12:54,669 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 240 predicate places. [2022-01-19 13:12:54,669 INFO L470 AbstractCegarLoop]: Abstraction has has 427 places, 250 transitions, 1512 flow [2022-01-19 13:12:54,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:54,669 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:54,669 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:54,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2022-01-19 13:12:54,670 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:54,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:54,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1630149412, now seen corresponding path program 1 times [2022-01-19 13:12:54,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:54,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36847624] [2022-01-19 13:12:54,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:54,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:54,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:54,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:54,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36847624] [2022-01-19 13:12:54,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36847624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:54,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:54,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:12:54,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498453084] [2022-01-19 13:12:54,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:54,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:12:54,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:54,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:12:54,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:12:54,684 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 13:12:54,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 250 transitions, 1512 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:54,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:54,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 13:12:54,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:54,930 INFO L129 PetriNetUnfolder]: 189/1523 cut-off events. [2022-01-19 13:12:54,930 INFO L130 PetriNetUnfolder]: For 13383/13538 co-relation queries the response was YES. [2022-01-19 13:12:54,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6133 conditions, 1523 events. 189/1523 cut-off events. For 13383/13538 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 11331 event pairs, 125 based on Foata normal form. 35/1491 useless extension candidates. Maximal degree in co-relation 5942. Up to 142 conditions per place. [2022-01-19 13:12:54,951 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 11 selfloop transitions, 3 changer transitions 4/256 dead transitions. [2022-01-19 13:12:54,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 256 transitions, 1563 flow [2022-01-19 13:12:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:12:54,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:12:54,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 13:12:54,952 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 13:12:54,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 13:12:54,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 13:12:54,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:54,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 13:12:54,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:54,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:54,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:54,954 INFO L186 Difference]: Start difference. First operand has 427 places, 250 transitions, 1512 flow. Second operand 3 states and 591 transitions. [2022-01-19 13:12:54,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 256 transitions, 1563 flow [2022-01-19 13:12:54,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 256 transitions, 1271 flow, removed 146 selfloop flow, removed 16 redundant places. [2022-01-19 13:12:55,000 INFO L242 Difference]: Finished difference. Result has 388 places, 250 transitions, 1235 flow [2022-01-19 13:12:55,000 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1235, PETRI_PLACES=388, PETRI_TRANSITIONS=250} [2022-01-19 13:12:55,000 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 201 predicate places. [2022-01-19 13:12:55,001 INFO L470 AbstractCegarLoop]: Abstraction has has 388 places, 250 transitions, 1235 flow [2022-01-19 13:12:55,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:55,001 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:55,001 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:55,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2022-01-19 13:12:55,001 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:55,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:55,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1287662250, now seen corresponding path program 2 times [2022-01-19 13:12:55,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:55,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869960123] [2022-01-19 13:12:55,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:55,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:55,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:55,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869960123] [2022-01-19 13:12:55,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869960123] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:55,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:55,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:12:55,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778074576] [2022-01-19 13:12:55,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:55,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:12:55,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:55,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:12:55,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:12:55,017 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 13:12:55,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 250 transitions, 1235 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:55,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:55,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 13:12:55,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:55,156 INFO L129 PetriNetUnfolder]: 86/947 cut-off events. [2022-01-19 13:12:55,156 INFO L130 PetriNetUnfolder]: For 4769/4795 co-relation queries the response was YES. [2022-01-19 13:12:55,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3251 conditions, 947 events. 86/947 cut-off events. For 4769/4795 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6012 event pairs, 70 based on Foata normal form. 8/915 useless extension candidates. Maximal degree in co-relation 3074. Up to 72 conditions per place. [2022-01-19 13:12:55,167 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 9 selfloop transitions, 5 changer transitions 23/219 dead transitions. [2022-01-19 13:12:55,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 219 transitions, 1003 flow [2022-01-19 13:12:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:12:55,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:12:55,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2022-01-19 13:12:55,169 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9365079365079365 [2022-01-19 13:12:55,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2022-01-19 13:12:55,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2022-01-19 13:12:55,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:55,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2022-01-19 13:12:55,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:55,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:55,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:55,170 INFO L186 Difference]: Start difference. First operand has 388 places, 250 transitions, 1235 flow. Second operand 3 states and 590 transitions. [2022-01-19 13:12:55,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 219 transitions, 1003 flow [2022-01-19 13:12:55,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 219 transitions, 880 flow, removed 35 selfloop flow, removed 23 redundant places. [2022-01-19 13:12:55,194 INFO L242 Difference]: Finished difference. Result has 365 places, 195 transitions, 747 flow [2022-01-19 13:12:55,194 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=747, PETRI_PLACES=365, PETRI_TRANSITIONS=195} [2022-01-19 13:12:55,194 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 178 predicate places. [2022-01-19 13:12:55,194 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 195 transitions, 747 flow [2022-01-19 13:12:55,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:55,194 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:55,194 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:55,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2022-01-19 13:12:55,194 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:55,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:55,195 INFO L85 PathProgramCache]: Analyzing trace with hash 11624958, now seen corresponding path program 1 times [2022-01-19 13:12:55,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:55,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669423410] [2022-01-19 13:12:55,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:55,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:55,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:55,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669423410] [2022-01-19 13:12:55,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669423410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:55,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:55,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:55,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948943555] [2022-01-19 13:12:55,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:55,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:55,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:55,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:55,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:55,299 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:55,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 195 transitions, 747 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:55,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:55,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:55,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:55,997 INFO L129 PetriNetUnfolder]: 284/1339 cut-off events. [2022-01-19 13:12:55,997 INFO L130 PetriNetUnfolder]: For 8667/8681 co-relation queries the response was YES. [2022-01-19 13:12:56,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5421 conditions, 1339 events. 284/1339 cut-off events. For 8667/8681 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8605 event pairs, 120 based on Foata normal form. 1/1295 useless extension candidates. Maximal degree in co-relation 5259. Up to 374 conditions per place. [2022-01-19 13:12:56,014 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 112 selfloop transitions, 25 changer transitions 60/338 dead transitions. [2022-01-19 13:12:56,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 338 transitions, 2697 flow [2022-01-19 13:12:56,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-19 13:12:56,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-01-19 13:12:56,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5448 transitions. [2022-01-19 13:12:56,017 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7630252100840336 [2022-01-19 13:12:56,017 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5448 transitions. [2022-01-19 13:12:56,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5448 transitions. [2022-01-19 13:12:56,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:56,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5448 transitions. [2022-01-19 13:12:56,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 160.23529411764707) internal successors, (5448), 34 states have internal predecessors, (5448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:56,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:56,024 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:56,024 INFO L186 Difference]: Start difference. First operand has 365 places, 195 transitions, 747 flow. Second operand 34 states and 5448 transitions. [2022-01-19 13:12:56,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 338 transitions, 2697 flow [2022-01-19 13:12:56,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 338 transitions, 2505 flow, removed 91 selfloop flow, removed 12 redundant places. [2022-01-19 13:12:56,045 INFO L242 Difference]: Finished difference. Result has 402 places, 219 transitions, 1186 flow [2022-01-19 13:12:56,045 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1186, PETRI_PLACES=402, PETRI_TRANSITIONS=219} [2022-01-19 13:12:56,046 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 215 predicate places. [2022-01-19 13:12:56,046 INFO L470 AbstractCegarLoop]: Abstraction has has 402 places, 219 transitions, 1186 flow [2022-01-19 13:12:56,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:56,046 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:56,046 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:56,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2022-01-19 13:12:56,046 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:56,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:56,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1065449616, now seen corresponding path program 2 times [2022-01-19 13:12:56,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:56,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205019971] [2022-01-19 13:12:56,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:56,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:56,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:56,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:56,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205019971] [2022-01-19 13:12:56,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205019971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:56,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:56,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:56,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935799629] [2022-01-19 13:12:56,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:56,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:56,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:56,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:56,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:56,148 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:56,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 219 transitions, 1186 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:56,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:56,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:56,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:57,253 INFO L129 PetriNetUnfolder]: 293/1409 cut-off events. [2022-01-19 13:12:57,253 INFO L130 PetriNetUnfolder]: For 17088/17096 co-relation queries the response was YES. [2022-01-19 13:12:57,270 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6956 conditions, 1409 events. 293/1409 cut-off events. For 17088/17096 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 9356 event pairs, 103 based on Foata normal form. 1/1372 useless extension candidates. Maximal degree in co-relation 6773. Up to 354 conditions per place. [2022-01-19 13:12:57,273 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 160 selfloop transitions, 20 changer transitions 103/424 dead transitions. [2022-01-19 13:12:57,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 424 transitions, 4547 flow [2022-01-19 13:12:57,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-19 13:12:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-01-19 13:12:57,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9234 transitions. [2022-01-19 13:12:57,277 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.758128078817734 [2022-01-19 13:12:57,277 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9234 transitions. [2022-01-19 13:12:57,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9234 transitions. [2022-01-19 13:12:57,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:57,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9234 transitions. [2022-01-19 13:12:57,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.20689655172413) internal successors, (9234), 58 states have internal predecessors, (9234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:57,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:57,289 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:57,289 INFO L186 Difference]: Start difference. First operand has 402 places, 219 transitions, 1186 flow. Second operand 58 states and 9234 transitions. [2022-01-19 13:12:57,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 424 transitions, 4547 flow [2022-01-19 13:12:57,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 424 transitions, 3783 flow, removed 382 selfloop flow, removed 18 redundant places. [2022-01-19 13:12:57,334 INFO L242 Difference]: Finished difference. Result has 476 places, 227 transitions, 1339 flow [2022-01-19 13:12:57,334 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1339, PETRI_PLACES=476, PETRI_TRANSITIONS=227} [2022-01-19 13:12:57,335 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 289 predicate places. [2022-01-19 13:12:57,335 INFO L470 AbstractCegarLoop]: Abstraction has has 476 places, 227 transitions, 1339 flow [2022-01-19 13:12:57,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:57,335 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:57,335 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:57,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2022-01-19 13:12:57,335 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:57,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:57,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1337927380, now seen corresponding path program 3 times [2022-01-19 13:12:57,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:57,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107179408] [2022-01-19 13:12:57,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:57,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:57,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:57,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107179408] [2022-01-19 13:12:57,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107179408] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:57,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:57,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:57,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098603258] [2022-01-19 13:12:57,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:57,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:57,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:57,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:57,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:57,445 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:57,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 227 transitions, 1339 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:57,445 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:57,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:57,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:58,212 INFO L129 PetriNetUnfolder]: 339/1539 cut-off events. [2022-01-19 13:12:58,212 INFO L130 PetriNetUnfolder]: For 30491/30499 co-relation queries the response was YES. [2022-01-19 13:12:58,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9179 conditions, 1539 events. 339/1539 cut-off events. For 30491/30499 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 10268 event pairs, 139 based on Foata normal form. 1/1492 useless extension candidates. Maximal degree in co-relation 8958. Up to 373 conditions per place. [2022-01-19 13:12:58,237 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 137 selfloop transitions, 31 changer transitions 49/358 dead transitions. [2022-01-19 13:12:58,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 358 transitions, 3891 flow [2022-01-19 13:12:58,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 13:12:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 13:12:58,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4353 transitions. [2022-01-19 13:12:58,241 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7677248677248677 [2022-01-19 13:12:58,241 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4353 transitions. [2022-01-19 13:12:58,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4353 transitions. [2022-01-19 13:12:58,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:58,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4353 transitions. [2022-01-19 13:12:58,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 161.22222222222223) internal successors, (4353), 27 states have internal predecessors, (4353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:58,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:58,246 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:58,246 INFO L186 Difference]: Start difference. First operand has 476 places, 227 transitions, 1339 flow. Second operand 27 states and 4353 transitions. [2022-01-19 13:12:58,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 358 transitions, 3891 flow [2022-01-19 13:12:58,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 358 transitions, 3384 flow, removed 246 selfloop flow, removed 35 redundant places. [2022-01-19 13:12:58,338 INFO L242 Difference]: Finished difference. Result has 439 places, 256 transitions, 1852 flow [2022-01-19 13:12:58,339 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1852, PETRI_PLACES=439, PETRI_TRANSITIONS=256} [2022-01-19 13:12:58,339 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 252 predicate places. [2022-01-19 13:12:58,339 INFO L470 AbstractCegarLoop]: Abstraction has has 439 places, 256 transitions, 1852 flow [2022-01-19 13:12:58,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:58,339 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:58,339 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:58,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2022-01-19 13:12:58,339 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:58,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:58,340 INFO L85 PathProgramCache]: Analyzing trace with hash -375527788, now seen corresponding path program 4 times [2022-01-19 13:12:58,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:58,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705771357] [2022-01-19 13:12:58,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:58,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:58,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:58,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705771357] [2022-01-19 13:12:58,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705771357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:58,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:58,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:58,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349030507] [2022-01-19 13:12:58,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:58,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:58,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:58,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:58,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:58,439 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:58,440 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 256 transitions, 1852 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:58,440 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:58,440 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:58,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:12:59,090 INFO L129 PetriNetUnfolder]: 350/1567 cut-off events. [2022-01-19 13:12:59,090 INFO L130 PetriNetUnfolder]: For 20771/20786 co-relation queries the response was YES. [2022-01-19 13:12:59,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8577 conditions, 1567 events. 350/1567 cut-off events. For 20771/20786 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10472 event pairs, 125 based on Foata normal form. 3/1524 useless extension candidates. Maximal degree in co-relation 8370. Up to 435 conditions per place. [2022-01-19 13:12:59,114 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 151 selfloop transitions, 47 changer transitions 45/384 dead transitions. [2022-01-19 13:12:59,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 384 transitions, 4473 flow [2022-01-19 13:12:59,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 13:12:59,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 13:12:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4180 transitions. [2022-01-19 13:12:59,116 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655677655677655 [2022-01-19 13:12:59,116 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4180 transitions. [2022-01-19 13:12:59,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4180 transitions. [2022-01-19 13:12:59,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:12:59,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4180 transitions. [2022-01-19 13:12:59,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 160.76923076923077) internal successors, (4180), 26 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:59,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:59,121 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:59,121 INFO L186 Difference]: Start difference. First operand has 439 places, 256 transitions, 1852 flow. Second operand 26 states and 4180 transitions. [2022-01-19 13:12:59,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 384 transitions, 4473 flow [2022-01-19 13:12:59,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 384 transitions, 3911 flow, removed 260 selfloop flow, removed 24 redundant places. [2022-01-19 13:12:59,196 INFO L242 Difference]: Finished difference. Result has 445 places, 274 transitions, 2045 flow [2022-01-19 13:12:59,196 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2045, PETRI_PLACES=445, PETRI_TRANSITIONS=274} [2022-01-19 13:12:59,197 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 258 predicate places. [2022-01-19 13:12:59,197 INFO L470 AbstractCegarLoop]: Abstraction has has 445 places, 274 transitions, 2045 flow [2022-01-19 13:12:59,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:59,197 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:12:59,197 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:12:59,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2022-01-19 13:12:59,197 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:12:59,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:12:59,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1356977192, now seen corresponding path program 5 times [2022-01-19 13:12:59,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:12:59,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636116165] [2022-01-19 13:12:59,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:12:59,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:12:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:12:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:12:59,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:12:59,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636116165] [2022-01-19 13:12:59,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636116165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:12:59,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:12:59,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:12:59,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426114331] [2022-01-19 13:12:59,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:12:59,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:12:59,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:12:59,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:12:59,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:12:59,310 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:12:59,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 274 transitions, 2045 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:12:59,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:12:59,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:12:59,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:00,530 INFO L129 PetriNetUnfolder]: 479/1886 cut-off events. [2022-01-19 13:13:00,530 INFO L130 PetriNetUnfolder]: For 28147/28160 co-relation queries the response was YES. [2022-01-19 13:13:00,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11237 conditions, 1886 events. 479/1886 cut-off events. For 28147/28160 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 13247 event pairs, 177 based on Foata normal form. 3/1840 useless extension candidates. Maximal degree in co-relation 11035. Up to 437 conditions per place. [2022-01-19 13:13:00,567 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 199 selfloop transitions, 38 changer transitions 88/466 dead transitions. [2022-01-19 13:13:00,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 466 transitions, 6002 flow [2022-01-19 13:13:00,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-19 13:13:00,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-01-19 13:13:00,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8287 transitions. [2022-01-19 13:13:00,571 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7588827838827839 [2022-01-19 13:13:00,571 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8287 transitions. [2022-01-19 13:13:00,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8287 transitions. [2022-01-19 13:13:00,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:00,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8287 transitions. [2022-01-19 13:13:00,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.3653846153846) internal successors, (8287), 52 states have internal predecessors, (8287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:00,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:00,581 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:00,582 INFO L186 Difference]: Start difference. First operand has 445 places, 274 transitions, 2045 flow. Second operand 52 states and 8287 transitions. [2022-01-19 13:13:00,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 466 transitions, 6002 flow [2022-01-19 13:13:00,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 466 transitions, 5495 flow, removed 185 selfloop flow, removed 12 redundant places. [2022-01-19 13:13:00,680 INFO L242 Difference]: Finished difference. Result has 517 places, 295 transitions, 2258 flow [2022-01-19 13:13:00,680 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2258, PETRI_PLACES=517, PETRI_TRANSITIONS=295} [2022-01-19 13:13:00,680 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 330 predicate places. [2022-01-19 13:13:00,680 INFO L470 AbstractCegarLoop]: Abstraction has has 517 places, 295 transitions, 2258 flow [2022-01-19 13:13:00,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:00,681 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:00,681 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:00,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2022-01-19 13:13:00,681 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:00,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:00,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1219439260, now seen corresponding path program 6 times [2022-01-19 13:13:00,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:00,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073976116] [2022-01-19 13:13:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:00,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:00,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:00,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:00,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073976116] [2022-01-19 13:13:00,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073976116] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:00,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:00,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:00,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189745715] [2022-01-19 13:13:00,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:00,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:00,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:00,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:00,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:00,786 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:00,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 295 transitions, 2258 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:00,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:00,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:00,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:01,990 INFO L129 PetriNetUnfolder]: 555/2112 cut-off events. [2022-01-19 13:13:01,990 INFO L130 PetriNetUnfolder]: For 57614/57640 co-relation queries the response was YES. [2022-01-19 13:13:02,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15197 conditions, 2112 events. 555/2112 cut-off events. For 57614/57640 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 15241 event pairs, 254 based on Foata normal form. 3/2056 useless extension candidates. Maximal degree in co-relation 14959. Up to 432 conditions per place. [2022-01-19 13:13:02,030 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 229 selfloop transitions, 57 changer transitions 89/516 dead transitions. [2022-01-19 13:13:02,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 516 transitions, 7952 flow [2022-01-19 13:13:02,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-19 13:13:02,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-01-19 13:13:02,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7972 transitions. [2022-01-19 13:13:02,034 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592380952380953 [2022-01-19 13:13:02,034 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7972 transitions. [2022-01-19 13:13:02,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7972 transitions. [2022-01-19 13:13:02,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:02,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7972 transitions. [2022-01-19 13:13:02,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.44) internal successors, (7972), 50 states have internal predecessors, (7972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:02,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:02,044 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:02,044 INFO L186 Difference]: Start difference. First operand has 517 places, 295 transitions, 2258 flow. Second operand 50 states and 7972 transitions. [2022-01-19 13:13:02,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 516 transitions, 7952 flow [2022-01-19 13:13:02,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 516 transitions, 6704 flow, removed 624 selfloop flow, removed 35 redundant places. [2022-01-19 13:13:02,287 INFO L242 Difference]: Finished difference. Result has 538 places, 315 transitions, 2761 flow [2022-01-19 13:13:02,287 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2124, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=2761, PETRI_PLACES=538, PETRI_TRANSITIONS=315} [2022-01-19 13:13:02,287 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 351 predicate places. [2022-01-19 13:13:02,287 INFO L470 AbstractCegarLoop]: Abstraction has has 538 places, 315 transitions, 2761 flow [2022-01-19 13:13:02,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:02,288 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:02,288 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:02,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2022-01-19 13:13:02,288 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:02,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:02,289 INFO L85 PathProgramCache]: Analyzing trace with hash 580278906, now seen corresponding path program 7 times [2022-01-19 13:13:02,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:02,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067981269] [2022-01-19 13:13:02,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:02,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:02,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:02,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067981269] [2022-01-19 13:13:02,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067981269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:02,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:02,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:02,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202753581] [2022-01-19 13:13:02,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:02,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:02,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:02,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:02,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:02,399 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:02,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 315 transitions, 2761 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:02,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:02,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:02,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:03,684 INFO L129 PetriNetUnfolder]: 553/2071 cut-off events. [2022-01-19 13:13:03,685 INFO L130 PetriNetUnfolder]: For 59596/59628 co-relation queries the response was YES. [2022-01-19 13:13:03,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15469 conditions, 2071 events. 553/2071 cut-off events. For 59596/59628 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 15102 event pairs, 127 based on Foata normal form. 1/2027 useless extension candidates. Maximal degree in co-relation 15218. Up to 335 conditions per place. [2022-01-19 13:13:03,727 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 324 selfloop transitions, 62 changer transitions 114/641 dead transitions. [2022-01-19 13:13:03,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 641 transitions, 10230 flow [2022-01-19 13:13:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-19 13:13:03,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-01-19 13:13:03,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9230 transitions. [2022-01-19 13:13:03,731 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7577996715927751 [2022-01-19 13:13:03,731 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9230 transitions. [2022-01-19 13:13:03,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9230 transitions. [2022-01-19 13:13:03,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:03,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9230 transitions. [2022-01-19 13:13:03,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.13793103448276) internal successors, (9230), 58 states have internal predecessors, (9230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:03,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:03,743 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:03,743 INFO L186 Difference]: Start difference. First operand has 538 places, 315 transitions, 2761 flow. Second operand 58 states and 9230 transitions. [2022-01-19 13:13:03,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 641 transitions, 10230 flow [2022-01-19 13:13:03,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 641 transitions, 9319 flow, removed 439 selfloop flow, removed 33 redundant places. [2022-01-19 13:13:03,968 INFO L242 Difference]: Finished difference. Result has 574 places, 318 transitions, 2959 flow [2022-01-19 13:13:03,968 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2573, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=2959, PETRI_PLACES=574, PETRI_TRANSITIONS=318} [2022-01-19 13:13:03,969 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 387 predicate places. [2022-01-19 13:13:03,969 INFO L470 AbstractCegarLoop]: Abstraction has has 574 places, 318 transitions, 2959 flow [2022-01-19 13:13:03,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:03,969 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:03,969 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:03,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2022-01-19 13:13:03,969 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:03,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:03,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1446185702, now seen corresponding path program 8 times [2022-01-19 13:13:03,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:03,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802691644] [2022-01-19 13:13:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:03,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:04,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:04,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802691644] [2022-01-19 13:13:04,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802691644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:04,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:04,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:04,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243711496] [2022-01-19 13:13:04,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:04,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:04,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:04,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:04,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:04,072 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:04,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 318 transitions, 2959 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:04,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:04,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:04,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:05,367 INFO L129 PetriNetUnfolder]: 588/2196 cut-off events. [2022-01-19 13:13:05,367 INFO L130 PetriNetUnfolder]: For 52660/52702 co-relation queries the response was YES. [2022-01-19 13:13:05,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15944 conditions, 2196 events. 588/2196 cut-off events. For 52660/52702 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 16339 event pairs, 165 based on Foata normal form. 15/2146 useless extension candidates. Maximal degree in co-relation 15675. Up to 504 conditions per place. [2022-01-19 13:13:05,415 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 207 selfloop transitions, 65 changer transitions 89/502 dead transitions. [2022-01-19 13:13:05,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 502 transitions, 7362 flow [2022-01-19 13:13:05,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-19 13:13:05,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-01-19 13:13:05,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 8589 transitions. [2022-01-19 13:13:05,419 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7574074074074074 [2022-01-19 13:13:05,419 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 8589 transitions. [2022-01-19 13:13:05,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 8589 transitions. [2022-01-19 13:13:05,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:05,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 8589 transitions. [2022-01-19 13:13:05,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 159.05555555555554) internal successors, (8589), 54 states have internal predecessors, (8589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:05,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:05,431 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:05,431 INFO L186 Difference]: Start difference. First operand has 574 places, 318 transitions, 2959 flow. Second operand 54 states and 8589 transitions. [2022-01-19 13:13:05,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 502 transitions, 7362 flow [2022-01-19 13:13:05,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 502 transitions, 7031 flow, removed 124 selfloop flow, removed 45 redundant places. [2022-01-19 13:13:05,651 INFO L242 Difference]: Finished difference. Result has 578 places, 326 transitions, 3220 flow [2022-01-19 13:13:05,651 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2818, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=3220, PETRI_PLACES=578, PETRI_TRANSITIONS=326} [2022-01-19 13:13:05,651 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 391 predicate places. [2022-01-19 13:13:05,651 INFO L470 AbstractCegarLoop]: Abstraction has has 578 places, 326 transitions, 3220 flow [2022-01-19 13:13:05,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:05,652 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:05,652 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:05,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2022-01-19 13:13:05,652 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:05,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:05,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1568026750, now seen corresponding path program 9 times [2022-01-19 13:13:05,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:05,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085093455] [2022-01-19 13:13:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:05,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:05,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:05,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085093455] [2022-01-19 13:13:05,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085093455] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:05,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:05,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:05,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696157005] [2022-01-19 13:13:05,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:05,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:05,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:05,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:05,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:05,765 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:05,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 326 transitions, 3220 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:05,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:05,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:05,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:07,076 INFO L129 PetriNetUnfolder]: 600/2248 cut-off events. [2022-01-19 13:13:07,076 INFO L130 PetriNetUnfolder]: For 68600/68633 co-relation queries the response was YES. [2022-01-19 13:13:07,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17684 conditions, 2248 events. 600/2248 cut-off events. For 68600/68633 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 16723 event pairs, 325 based on Foata normal form. 1/2174 useless extension candidates. Maximal degree in co-relation 17415. Up to 535 conditions per place. [2022-01-19 13:13:07,125 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 225 selfloop transitions, 51 changer transitions 89/506 dead transitions. [2022-01-19 13:13:07,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 506 transitions, 8643 flow [2022-01-19 13:13:07,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-19 13:13:07,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-01-19 13:13:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8133 transitions. [2022-01-19 13:13:07,129 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593837535014005 [2022-01-19 13:13:07,129 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8133 transitions. [2022-01-19 13:13:07,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8133 transitions. [2022-01-19 13:13:07,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:07,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8133 transitions. [2022-01-19 13:13:07,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 159.47058823529412) internal successors, (8133), 51 states have internal predecessors, (8133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:07,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:07,139 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:07,139 INFO L186 Difference]: Start difference. First operand has 578 places, 326 transitions, 3220 flow. Second operand 51 states and 8133 transitions. [2022-01-19 13:13:07,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 506 transitions, 8643 flow [2022-01-19 13:13:07,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 506 transitions, 7701 flow, removed 445 selfloop flow, removed 39 redundant places. [2022-01-19 13:13:07,393 INFO L242 Difference]: Finished difference. Result has 594 places, 344 transitions, 3761 flow [2022-01-19 13:13:07,393 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3088, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=3761, PETRI_PLACES=594, PETRI_TRANSITIONS=344} [2022-01-19 13:13:07,393 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 407 predicate places. [2022-01-19 13:13:07,393 INFO L470 AbstractCegarLoop]: Abstraction has has 594 places, 344 transitions, 3761 flow [2022-01-19 13:13:07,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:07,394 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:07,394 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:07,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2022-01-19 13:13:07,394 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:07,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:07,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1112861422, now seen corresponding path program 10 times [2022-01-19 13:13:07,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:07,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881683399] [2022-01-19 13:13:07,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:07,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:07,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:07,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881683399] [2022-01-19 13:13:07,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881683399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:07,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:07,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:07,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570924415] [2022-01-19 13:13:07,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:07,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:07,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:07,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:07,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:07,507 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:07,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 344 transitions, 3761 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:07,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:07,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:07,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:08,781 INFO L129 PetriNetUnfolder]: 591/2229 cut-off events. [2022-01-19 13:13:08,781 INFO L130 PetriNetUnfolder]: For 78850/78883 co-relation queries the response was YES. [2022-01-19 13:13:08,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18401 conditions, 2229 events. 591/2229 cut-off events. For 78850/78883 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 16740 event pairs, 245 based on Foata normal form. 1/2151 useless extension candidates. Maximal degree in co-relation 18122. Up to 567 conditions per place. [2022-01-19 13:13:08,830 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 298 selfloop transitions, 79 changer transitions 93/611 dead transitions. [2022-01-19 13:13:08,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 611 transitions, 11743 flow [2022-01-19 13:13:08,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-19 13:13:08,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-01-19 13:13:08,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7963 transitions. [2022-01-19 13:13:08,834 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7583809523809524 [2022-01-19 13:13:08,834 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7963 transitions. [2022-01-19 13:13:08,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7963 transitions. [2022-01-19 13:13:08,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:08,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7963 transitions. [2022-01-19 13:13:08,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.26) internal successors, (7963), 50 states have internal predecessors, (7963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:08,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:08,844 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:08,844 INFO L186 Difference]: Start difference. First operand has 594 places, 344 transitions, 3761 flow. Second operand 50 states and 7963 transitions. [2022-01-19 13:13:08,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 611 transitions, 11743 flow [2022-01-19 13:13:09,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 611 transitions, 10512 flow, removed 596 selfloop flow, removed 38 redundant places. [2022-01-19 13:13:09,164 INFO L242 Difference]: Finished difference. Result has 611 places, 374 transitions, 4668 flow [2022-01-19 13:13:09,164 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3560, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=4668, PETRI_PLACES=611, PETRI_TRANSITIONS=374} [2022-01-19 13:13:09,164 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 424 predicate places. [2022-01-19 13:13:09,165 INFO L470 AbstractCegarLoop]: Abstraction has has 611 places, 374 transitions, 4668 flow [2022-01-19 13:13:09,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:09,165 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:09,165 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:09,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2022-01-19 13:13:09,165 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:09,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:09,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1032397360, now seen corresponding path program 11 times [2022-01-19 13:13:09,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:09,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376300680] [2022-01-19 13:13:09,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:09,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:09,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:09,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:09,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376300680] [2022-01-19 13:13:09,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376300680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:09,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:09,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:09,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560137662] [2022-01-19 13:13:09,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:09,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:09,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:09,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:09,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:09,271 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:09,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 374 transitions, 4668 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:09,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:09,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:09,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:10,609 INFO L129 PetriNetUnfolder]: 584/2220 cut-off events. [2022-01-19 13:13:10,609 INFO L130 PetriNetUnfolder]: For 70110/70165 co-relation queries the response was YES. [2022-01-19 13:13:10,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17642 conditions, 2220 events. 584/2220 cut-off events. For 70110/70165 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 16679 event pairs, 169 based on Foata normal form. 19/2169 useless extension candidates. Maximal degree in co-relation 17355. Up to 539 conditions per place. [2022-01-19 13:13:10,661 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 238 selfloop transitions, 97 changer transitions 81/557 dead transitions. [2022-01-19 13:13:10,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 557 transitions, 9909 flow [2022-01-19 13:13:10,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 13:13:10,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 13:13:10,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7328 transitions. [2022-01-19 13:13:10,664 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.758592132505176 [2022-01-19 13:13:10,664 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7328 transitions. [2022-01-19 13:13:10,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7328 transitions. [2022-01-19 13:13:10,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:10,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7328 transitions. [2022-01-19 13:13:10,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.30434782608697) internal successors, (7328), 46 states have internal predecessors, (7328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:10,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:10,673 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:10,673 INFO L186 Difference]: Start difference. First operand has 611 places, 374 transitions, 4668 flow. Second operand 46 states and 7328 transitions. [2022-01-19 13:13:10,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 557 transitions, 9909 flow [2022-01-19 13:13:11,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 557 transitions, 8847 flow, removed 481 selfloop flow, removed 39 redundant places. [2022-01-19 13:13:11,007 INFO L242 Difference]: Finished difference. Result has 611 places, 378 transitions, 4604 flow [2022-01-19 13:13:11,007 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4185, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4604, PETRI_PLACES=611, PETRI_TRANSITIONS=378} [2022-01-19 13:13:11,007 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 424 predicate places. [2022-01-19 13:13:11,007 INFO L470 AbstractCegarLoop]: Abstraction has has 611 places, 378 transitions, 4604 flow [2022-01-19 13:13:11,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:11,007 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:11,007 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:11,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2022-01-19 13:13:11,007 INFO L402 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:11,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:11,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1861600500, now seen corresponding path program 12 times [2022-01-19 13:13:11,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:11,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595252038] [2022-01-19 13:13:11,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:11,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:11,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:11,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595252038] [2022-01-19 13:13:11,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595252038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:11,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:11,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:11,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013482456] [2022-01-19 13:13:11,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:11,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:11,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:11,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:11,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:11,117 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:11,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 378 transitions, 4604 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:11,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:11,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:11,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:12,497 INFO L129 PetriNetUnfolder]: 583/2207 cut-off events. [2022-01-19 13:13:12,497 INFO L130 PetriNetUnfolder]: For 64420/64473 co-relation queries the response was YES. [2022-01-19 13:13:12,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17349 conditions, 2207 events. 583/2207 cut-off events. For 64420/64473 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 16533 event pairs, 176 based on Foata normal form. 16/2150 useless extension candidates. Maximal degree in co-relation 17067. Up to 524 conditions per place. [2022-01-19 13:13:12,547 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 263 selfloop transitions, 84 changer transitions 92/580 dead transitions. [2022-01-19 13:13:12,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 580 transitions, 10695 flow [2022-01-19 13:13:12,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 13:13:12,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 13:13:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 8441 transitions. [2022-01-19 13:13:12,551 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7584007187780772 [2022-01-19 13:13:12,551 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 8441 transitions. [2022-01-19 13:13:12,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 8441 transitions. [2022-01-19 13:13:12,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:12,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 8441 transitions. [2022-01-19 13:13:12,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 159.26415094339623) internal successors, (8441), 53 states have internal predecessors, (8441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:12,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:12,562 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:12,562 INFO L186 Difference]: Start difference. First operand has 611 places, 378 transitions, 4604 flow. Second operand 53 states and 8441 transitions. [2022-01-19 13:13:12,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 580 transitions, 10695 flow [2022-01-19 13:13:12,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 580 transitions, 9956 flow, removed 323 selfloop flow, removed 35 redundant places. [2022-01-19 13:13:12,860 INFO L242 Difference]: Finished difference. Result has 638 places, 388 transitions, 5010 flow [2022-01-19 13:13:12,860 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4393, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=5010, PETRI_PLACES=638, PETRI_TRANSITIONS=388} [2022-01-19 13:13:12,860 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 451 predicate places. [2022-01-19 13:13:12,860 INFO L470 AbstractCegarLoop]: Abstraction has has 638 places, 388 transitions, 5010 flow [2022-01-19 13:13:12,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:12,861 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:12,861 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:12,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2022-01-19 13:13:12,861 INFO L402 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:12,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:12,861 INFO L85 PathProgramCache]: Analyzing trace with hash 50987626, now seen corresponding path program 13 times [2022-01-19 13:13:12,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:12,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572820171] [2022-01-19 13:13:12,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:12,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:13,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:13,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572820171] [2022-01-19 13:13:13,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572820171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:13,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:13,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:13,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46240594] [2022-01-19 13:13:13,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:13,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:13,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:13,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:13,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:13,003 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:13,004 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 388 transitions, 5010 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:13,004 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:13,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:13,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:14,185 INFO L129 PetriNetUnfolder]: 558/2120 cut-off events. [2022-01-19 13:13:14,185 INFO L130 PetriNetUnfolder]: For 67466/67526 co-relation queries the response was YES. [2022-01-19 13:13:14,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17249 conditions, 2120 events. 558/2120 cut-off events. For 67466/67526 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 15555 event pairs, 183 based on Foata normal form. 15/2056 useless extension candidates. Maximal degree in co-relation 16954. Up to 543 conditions per place. [2022-01-19 13:13:14,235 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 233 selfloop transitions, 103 changer transitions 66/543 dead transitions. [2022-01-19 13:13:14,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 543 transitions, 10111 flow [2022-01-19 13:13:14,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-19 13:13:14,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-01-19 13:13:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5441 transitions. [2022-01-19 13:13:14,238 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620448179271708 [2022-01-19 13:13:14,238 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5441 transitions. [2022-01-19 13:13:14,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5441 transitions. [2022-01-19 13:13:14,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:14,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5441 transitions. [2022-01-19 13:13:14,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 160.02941176470588) internal successors, (5441), 34 states have internal predecessors, (5441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:14,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:14,244 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:14,244 INFO L186 Difference]: Start difference. First operand has 638 places, 388 transitions, 5010 flow. Second operand 34 states and 5441 transitions. [2022-01-19 13:13:14,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 543 transitions, 10111 flow [2022-01-19 13:13:14,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 543 transitions, 9164 flow, removed 413 selfloop flow, removed 40 redundant places. [2022-01-19 13:13:14,596 INFO L242 Difference]: Finished difference. Result has 615 places, 406 transitions, 5557 flow [2022-01-19 13:13:14,597 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4710, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=5557, PETRI_PLACES=615, PETRI_TRANSITIONS=406} [2022-01-19 13:13:14,597 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 428 predicate places. [2022-01-19 13:13:14,597 INFO L470 AbstractCegarLoop]: Abstraction has has 615 places, 406 transitions, 5557 flow [2022-01-19 13:13:14,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:14,597 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:14,597 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:14,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2022-01-19 13:13:14,597 INFO L402 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:14,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:14,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1717249950, now seen corresponding path program 14 times [2022-01-19 13:13:14,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:14,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741632358] [2022-01-19 13:13:14,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:14,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:14,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:14,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:14,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741632358] [2022-01-19 13:13:14,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741632358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:14,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:14,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:14,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386921957] [2022-01-19 13:13:14,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:14,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:14,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:14,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:14,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:14,704 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:14,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 406 transitions, 5557 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:14,705 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:14,705 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:14,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:15,802 INFO L129 PetriNetUnfolder]: 554/2100 cut-off events. [2022-01-19 13:13:15,803 INFO L130 PetriNetUnfolder]: For 60126/60220 co-relation queries the response was YES. [2022-01-19 13:13:15,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16702 conditions, 2100 events. 554/2100 cut-off events. For 60126/60220 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 15398 event pairs, 166 based on Foata normal form. 27/2056 useless extension candidates. Maximal degree in co-relation 16421. Up to 528 conditions per place. [2022-01-19 13:13:15,850 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 250 selfloop transitions, 110 changer transitions 72/573 dead transitions. [2022-01-19 13:13:15,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 573 transitions, 10306 flow [2022-01-19 13:13:15,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:13:15,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:13:15,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6066 transitions. [2022-01-19 13:13:15,853 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7601503759398496 [2022-01-19 13:13:15,853 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6066 transitions. [2022-01-19 13:13:15,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6066 transitions. [2022-01-19 13:13:15,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:15,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6066 transitions. [2022-01-19 13:13:15,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.6315789473684) internal successors, (6066), 38 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:15,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:15,860 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:15,860 INFO L186 Difference]: Start difference. First operand has 615 places, 406 transitions, 5557 flow. Second operand 38 states and 6066 transitions. [2022-01-19 13:13:15,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 573 transitions, 10306 flow [2022-01-19 13:13:16,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 573 transitions, 9398 flow, removed 331 selfloop flow, removed 25 redundant places. [2022-01-19 13:13:16,221 INFO L242 Difference]: Finished difference. Result has 629 places, 408 transitions, 5441 flow [2022-01-19 13:13:16,221 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5055, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5441, PETRI_PLACES=629, PETRI_TRANSITIONS=408} [2022-01-19 13:13:16,221 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 442 predicate places. [2022-01-19 13:13:16,221 INFO L470 AbstractCegarLoop]: Abstraction has has 629 places, 408 transitions, 5441 flow [2022-01-19 13:13:16,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:16,221 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:16,222 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:16,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2022-01-19 13:13:16,222 INFO L402 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:16,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:16,222 INFO L85 PathProgramCache]: Analyzing trace with hash 808342620, now seen corresponding path program 15 times [2022-01-19 13:13:16,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:16,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485828591] [2022-01-19 13:13:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:16,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:16,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:16,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485828591] [2022-01-19 13:13:16,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485828591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:16,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:16,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:16,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573640203] [2022-01-19 13:13:16,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:16,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:16,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:16,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:16,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:16,350 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:16,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 408 transitions, 5441 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:16,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:16,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:16,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:17,596 INFO L129 PetriNetUnfolder]: 551/2137 cut-off events. [2022-01-19 13:13:17,596 INFO L130 PetriNetUnfolder]: For 60080/60164 co-relation queries the response was YES. [2022-01-19 13:13:17,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16827 conditions, 2137 events. 551/2137 cut-off events. For 60080/60164 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 15851 event pairs, 198 based on Foata normal form. 15/2077 useless extension candidates. Maximal degree in co-relation 16545. Up to 539 conditions per place. [2022-01-19 13:13:17,644 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 254 selfloop transitions, 111 changer transitions 81/587 dead transitions. [2022-01-19 13:13:17,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 587 transitions, 10966 flow [2022-01-19 13:13:17,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-19 13:13:17,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-01-19 13:13:17,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6702 transitions. [2022-01-19 13:13:17,647 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598639455782313 [2022-01-19 13:13:17,647 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6702 transitions. [2022-01-19 13:13:17,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6702 transitions. [2022-01-19 13:13:17,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:17,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6702 transitions. [2022-01-19 13:13:17,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 159.57142857142858) internal successors, (6702), 42 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:17,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:17,655 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:17,655 INFO L186 Difference]: Start difference. First operand has 629 places, 408 transitions, 5441 flow. Second operand 42 states and 6702 transitions. [2022-01-19 13:13:17,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 587 transitions, 10966 flow [2022-01-19 13:13:17,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 587 transitions, 10616 flow, removed 114 selfloop flow, removed 24 redundant places. [2022-01-19 13:13:17,994 INFO L242 Difference]: Finished difference. Result has 657 places, 430 transitions, 6285 flow [2022-01-19 13:13:17,995 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5249, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=6285, PETRI_PLACES=657, PETRI_TRANSITIONS=430} [2022-01-19 13:13:17,995 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 470 predicate places. [2022-01-19 13:13:17,995 INFO L470 AbstractCegarLoop]: Abstraction has has 657 places, 430 transitions, 6285 flow [2022-01-19 13:13:17,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:17,995 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:17,995 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:17,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2022-01-19 13:13:17,995 INFO L402 AbstractCegarLoop]: === Iteration 320 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:17,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:17,996 INFO L85 PathProgramCache]: Analyzing trace with hash 350149278, now seen corresponding path program 16 times [2022-01-19 13:13:17,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:17,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889597787] [2022-01-19 13:13:17,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:17,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:18,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:18,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889597787] [2022-01-19 13:13:18,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889597787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:18,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:18,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:18,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099663670] [2022-01-19 13:13:18,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:18,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:18,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:18,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:18,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:18,121 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:18,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 430 transitions, 6285 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:18,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:18,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:18,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:19,143 INFO L129 PetriNetUnfolder]: 509/2004 cut-off events. [2022-01-19 13:13:19,143 INFO L130 PetriNetUnfolder]: For 58596/58674 co-relation queries the response was YES. [2022-01-19 13:13:19,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15922 conditions, 2004 events. 509/2004 cut-off events. For 58596/58674 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14501 event pairs, 164 based on Foata normal form. 27/1963 useless extension candidates. Maximal degree in co-relation 15623. Up to 517 conditions per place. [2022-01-19 13:13:19,190 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 251 selfloop transitions, 93 changer transitions 70/555 dead transitions. [2022-01-19 13:13:19,190 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 555 transitions, 10097 flow [2022-01-19 13:13:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:13:19,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:13:19,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4793 transitions. [2022-01-19 13:13:19,192 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7607936507936508 [2022-01-19 13:13:19,192 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4793 transitions. [2022-01-19 13:13:19,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4793 transitions. [2022-01-19 13:13:19,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:19,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4793 transitions. [2022-01-19 13:13:19,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.76666666666668) internal successors, (4793), 30 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:19,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:19,198 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:19,198 INFO L186 Difference]: Start difference. First operand has 657 places, 430 transitions, 6285 flow. Second operand 30 states and 4793 transitions. [2022-01-19 13:13:19,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 555 transitions, 10097 flow [2022-01-19 13:13:19,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 555 transitions, 9411 flow, removed 254 selfloop flow, removed 32 redundant places. [2022-01-19 13:13:19,604 INFO L242 Difference]: Finished difference. Result has 636 places, 387 transitions, 5137 flow [2022-01-19 13:13:19,604 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5842, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5137, PETRI_PLACES=636, PETRI_TRANSITIONS=387} [2022-01-19 13:13:19,604 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 449 predicate places. [2022-01-19 13:13:19,604 INFO L470 AbstractCegarLoop]: Abstraction has has 636 places, 387 transitions, 5137 flow [2022-01-19 13:13:19,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:19,605 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:19,605 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:19,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2022-01-19 13:13:19,605 INFO L402 AbstractCegarLoop]: === Iteration 321 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:19,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:19,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1409998716, now seen corresponding path program 17 times [2022-01-19 13:13:19,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:19,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851631047] [2022-01-19 13:13:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:19,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:19,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:19,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851631047] [2022-01-19 13:13:19,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851631047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:19,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:19,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:19,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761997899] [2022-01-19 13:13:19,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:19,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:19,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:19,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:19,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:19,723 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:19,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 387 transitions, 5137 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:19,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:19,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:19,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:20,982 INFO L129 PetriNetUnfolder]: 556/2152 cut-off events. [2022-01-19 13:13:20,982 INFO L130 PetriNetUnfolder]: For 58966/59024 co-relation queries the response was YES. [2022-01-19 13:13:21,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16992 conditions, 2152 events. 556/2152 cut-off events. For 58966/59024 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 15989 event pairs, 188 based on Foata normal form. 17/2098 useless extension candidates. Maximal degree in co-relation 16711. Up to 519 conditions per place. [2022-01-19 13:13:21,033 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 250 selfloop transitions, 110 changer transitions 83/584 dead transitions. [2022-01-19 13:13:21,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 584 transitions, 10630 flow [2022-01-19 13:13:21,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 13:13:21,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 13:13:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7179 transitions. [2022-01-19 13:13:21,036 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7596825396825397 [2022-01-19 13:13:21,036 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7179 transitions. [2022-01-19 13:13:21,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7179 transitions. [2022-01-19 13:13:21,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:21,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7179 transitions. [2022-01-19 13:13:21,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.53333333333333) internal successors, (7179), 45 states have internal predecessors, (7179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:21,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:21,048 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:21,048 INFO L186 Difference]: Start difference. First operand has 636 places, 387 transitions, 5137 flow. Second operand 45 states and 7179 transitions. [2022-01-19 13:13:21,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 584 transitions, 10630 flow [2022-01-19 13:13:21,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 584 transitions, 9317 flow, removed 183 selfloop flow, removed 41 redundant places. [2022-01-19 13:13:21,371 INFO L242 Difference]: Finished difference. Result has 626 places, 412 transitions, 5254 flow [2022-01-19 13:13:21,371 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4427, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=5254, PETRI_PLACES=626, PETRI_TRANSITIONS=412} [2022-01-19 13:13:21,371 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 439 predicate places. [2022-01-19 13:13:21,371 INFO L470 AbstractCegarLoop]: Abstraction has has 626 places, 412 transitions, 5254 flow [2022-01-19 13:13:21,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:21,371 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:21,372 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:21,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2022-01-19 13:13:21,372 INFO L402 AbstractCegarLoop]: === Iteration 322 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:21,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:21,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1728534254, now seen corresponding path program 18 times [2022-01-19 13:13:21,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:21,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319156869] [2022-01-19 13:13:21,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:21,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:21,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:21,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319156869] [2022-01-19 13:13:21,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319156869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:21,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:21,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:21,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423093950] [2022-01-19 13:13:21,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:21,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:21,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:21,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:21,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:21,481 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:21,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 412 transitions, 5254 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:21,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:21,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:21,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:22,791 INFO L129 PetriNetUnfolder]: 550/2127 cut-off events. [2022-01-19 13:13:22,791 INFO L130 PetriNetUnfolder]: For 52306/52345 co-relation queries the response was YES. [2022-01-19 13:13:22,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16049 conditions, 2127 events. 550/2127 cut-off events. For 52306/52345 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 15726 event pairs, 179 based on Foata normal form. 11/2068 useless extension candidates. Maximal degree in co-relation 15760. Up to 515 conditions per place. [2022-01-19 13:13:22,838 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 259 selfloop transitions, 109 changer transitions 85/594 dead transitions. [2022-01-19 13:13:22,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 594 transitions, 10413 flow [2022-01-19 13:13:22,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 13:13:22,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 13:13:22,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7339 transitions. [2022-01-19 13:13:22,842 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7597308488612836 [2022-01-19 13:13:22,842 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7339 transitions. [2022-01-19 13:13:22,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7339 transitions. [2022-01-19 13:13:22,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:22,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7339 transitions. [2022-01-19 13:13:22,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.54347826086956) internal successors, (7339), 46 states have internal predecessors, (7339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:22,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:22,851 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:22,851 INFO L186 Difference]: Start difference. First operand has 626 places, 412 transitions, 5254 flow. Second operand 46 states and 7339 transitions. [2022-01-19 13:13:22,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 594 transitions, 10413 flow [2022-01-19 13:13:23,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 594 transitions, 9890 flow, removed 221 selfloop flow, removed 30 redundant places. [2022-01-19 13:13:23,181 INFO L242 Difference]: Finished difference. Result has 642 places, 417 transitions, 5571 flow [2022-01-19 13:13:23,181 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5054, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=5571, PETRI_PLACES=642, PETRI_TRANSITIONS=417} [2022-01-19 13:13:23,181 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 455 predicate places. [2022-01-19 13:13:23,181 INFO L470 AbstractCegarLoop]: Abstraction has has 642 places, 417 transitions, 5571 flow [2022-01-19 13:13:23,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:23,181 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:23,181 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:23,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2022-01-19 13:13:23,182 INFO L402 AbstractCegarLoop]: === Iteration 323 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:23,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:23,182 INFO L85 PathProgramCache]: Analyzing trace with hash 913497400, now seen corresponding path program 19 times [2022-01-19 13:13:23,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:23,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880432534] [2022-01-19 13:13:23,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:23,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:23,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:23,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:23,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880432534] [2022-01-19 13:13:23,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880432534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:23,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:23,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:23,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559158430] [2022-01-19 13:13:23,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:23,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:23,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:23,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:23,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:23,285 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:23,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 417 transitions, 5571 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:23,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:23,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:23,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:24,428 INFO L129 PetriNetUnfolder]: 568/2151 cut-off events. [2022-01-19 13:13:24,428 INFO L130 PetriNetUnfolder]: For 54214/54269 co-relation queries the response was YES. [2022-01-19 13:13:24,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16563 conditions, 2151 events. 568/2151 cut-off events. For 54214/54269 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 15931 event pairs, 193 based on Foata normal form. 17/2091 useless extension candidates. Maximal degree in co-relation 16268. Up to 536 conditions per place. [2022-01-19 13:13:24,477 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 250 selfloop transitions, 124 changer transitions 73/588 dead transitions. [2022-01-19 13:13:24,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 588 transitions, 10323 flow [2022-01-19 13:13:24,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:13:24,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:13:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5917 transitions. [2022-01-19 13:13:24,480 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615186615186615 [2022-01-19 13:13:24,480 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5917 transitions. [2022-01-19 13:13:24,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5917 transitions. [2022-01-19 13:13:24,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:24,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5917 transitions. [2022-01-19 13:13:24,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.9189189189189) internal successors, (5917), 37 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:24,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:24,488 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:24,488 INFO L186 Difference]: Start difference. First operand has 642 places, 417 transitions, 5571 flow. Second operand 37 states and 5917 transitions. [2022-01-19 13:13:24,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 645 places, 588 transitions, 10323 flow [2022-01-19 13:13:24,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 588 transitions, 9837 flow, removed 187 selfloop flow, removed 30 redundant places. [2022-01-19 13:13:24,833 INFO L242 Difference]: Finished difference. Result has 639 places, 436 transitions, 6125 flow [2022-01-19 13:13:24,833 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5335, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6125, PETRI_PLACES=639, PETRI_TRANSITIONS=436} [2022-01-19 13:13:24,833 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 452 predicate places. [2022-01-19 13:13:24,833 INFO L470 AbstractCegarLoop]: Abstraction has has 639 places, 436 transitions, 6125 flow [2022-01-19 13:13:24,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:24,833 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:24,833 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:24,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2022-01-19 13:13:24,834 INFO L402 AbstractCegarLoop]: === Iteration 324 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:24,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:24,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1548259760, now seen corresponding path program 20 times [2022-01-19 13:13:24,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:24,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339695568] [2022-01-19 13:13:24,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:24,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:24,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:24,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:24,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339695568] [2022-01-19 13:13:24,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339695568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:24,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:24,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:24,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437390243] [2022-01-19 13:13:24,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:24,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:24,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:24,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:24,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:24,965 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:24,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 436 transitions, 6125 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:24,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:24,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:24,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:26,188 INFO L129 PetriNetUnfolder]: 562/2178 cut-off events. [2022-01-19 13:13:26,188 INFO L130 PetriNetUnfolder]: For 54336/54392 co-relation queries the response was YES. [2022-01-19 13:13:26,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16671 conditions, 2178 events. 562/2178 cut-off events. For 54336/54392 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16270 event pairs, 190 based on Foata normal form. 17/2123 useless extension candidates. Maximal degree in co-relation 16380. Up to 532 conditions per place. [2022-01-19 13:13:26,239 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 123 changer transitions 72/593 dead transitions. [2022-01-19 13:13:26,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 593 transitions, 10654 flow [2022-01-19 13:13:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:13:26,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:13:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-01-19 13:13:26,241 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-01-19 13:13:26,242 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-01-19 13:13:26,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-01-19 13:13:26,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:26,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-01-19 13:13:26,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:26,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:26,249 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:26,249 INFO L186 Difference]: Start difference. First operand has 639 places, 436 transitions, 6125 flow. Second operand 38 states and 6077 transitions. [2022-01-19 13:13:26,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 593 transitions, 10654 flow [2022-01-19 13:13:26,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 593 transitions, 10255 flow, removed 146 selfloop flow, removed 21 redundant places. [2022-01-19 13:13:26,632 INFO L242 Difference]: Finished difference. Result has 655 places, 442 transitions, 6460 flow [2022-01-19 13:13:26,632 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5919, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6460, PETRI_PLACES=655, PETRI_TRANSITIONS=442} [2022-01-19 13:13:26,633 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 468 predicate places. [2022-01-19 13:13:26,633 INFO L470 AbstractCegarLoop]: Abstraction has has 655 places, 442 transitions, 6460 flow [2022-01-19 13:13:26,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:26,633 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:26,633 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:26,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2022-01-19 13:13:26,633 INFO L402 AbstractCegarLoop]: === Iteration 325 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:26,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:26,633 INFO L85 PathProgramCache]: Analyzing trace with hash -870591154, now seen corresponding path program 21 times [2022-01-19 13:13:26,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:26,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48619826] [2022-01-19 13:13:26,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:26,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:26,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:26,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48619826] [2022-01-19 13:13:26,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48619826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:26,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:26,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:26,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718987424] [2022-01-19 13:13:26,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:26,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:26,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:26,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:26,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:26,743 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:26,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 442 transitions, 6460 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:26,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:26,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:26,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:27,939 INFO L129 PetriNetUnfolder]: 558/2180 cut-off events. [2022-01-19 13:13:27,939 INFO L130 PetriNetUnfolder]: For 55349/55405 co-relation queries the response was YES. [2022-01-19 13:13:27,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16734 conditions, 2180 events. 558/2180 cut-off events. For 55349/55405 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 16319 event pairs, 182 based on Foata normal form. 17/2130 useless extension candidates. Maximal degree in co-relation 16437. Up to 528 conditions per place. [2022-01-19 13:13:27,991 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 265 selfloop transitions, 119 changer transitions 74/599 dead transitions. [2022-01-19 13:13:27,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 599 transitions, 11024 flow [2022-01-19 13:13:27,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:13:27,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:13:27,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-01-19 13:13:27,994 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-01-19 13:13:27,994 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-01-19 13:13:27,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-01-19 13:13:27,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:27,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-01-19 13:13:27,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:28,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:28,002 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:28,002 INFO L186 Difference]: Start difference. First operand has 655 places, 442 transitions, 6460 flow. Second operand 38 states and 6077 transitions. [2022-01-19 13:13:28,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 599 transitions, 11024 flow [2022-01-19 13:13:28,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 599 transitions, 10651 flow, removed 140 selfloop flow, removed 20 redundant places. [2022-01-19 13:13:28,403 INFO L242 Difference]: Finished difference. Result has 671 places, 447 transitions, 6738 flow [2022-01-19 13:13:28,403 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6243, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6738, PETRI_PLACES=671, PETRI_TRANSITIONS=447} [2022-01-19 13:13:28,403 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 484 predicate places. [2022-01-19 13:13:28,404 INFO L470 AbstractCegarLoop]: Abstraction has has 671 places, 447 transitions, 6738 flow [2022-01-19 13:13:28,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:28,404 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:28,404 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:28,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2022-01-19 13:13:28,404 INFO L402 AbstractCegarLoop]: === Iteration 326 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:28,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:28,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1594329086, now seen corresponding path program 22 times [2022-01-19 13:13:28,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:28,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042315915] [2022-01-19 13:13:28,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:28,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:28,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:28,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:28,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042315915] [2022-01-19 13:13:28,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042315915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:28,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:28,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:28,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636463622] [2022-01-19 13:13:28,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:28,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:28,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:28,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:28,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:28,522 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:28,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 447 transitions, 6738 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:28,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:28,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:28,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:29,601 INFO L129 PetriNetUnfolder]: 546/2142 cut-off events. [2022-01-19 13:13:29,601 INFO L130 PetriNetUnfolder]: For 55242/55278 co-relation queries the response was YES. [2022-01-19 13:13:29,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16559 conditions, 2142 events. 546/2142 cut-off events. For 55242/55278 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 15911 event pairs, 186 based on Foata normal form. 11/2085 useless extension candidates. Maximal degree in co-relation 16256. Up to 535 conditions per place. [2022-01-19 13:13:29,657 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 258 selfloop transitions, 120 changer transitions 62/581 dead transitions. [2022-01-19 13:13:29,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 676 places, 581 transitions, 10675 flow [2022-01-19 13:13:29,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:13:29,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:13:29,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-01-19 13:13:29,659 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 13:13:29,659 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-01-19 13:13:29,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-01-19 13:13:29,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:29,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-01-19 13:13:29,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:29,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:29,665 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:29,665 INFO L186 Difference]: Start difference. First operand has 671 places, 447 transitions, 6738 flow. Second operand 30 states and 4815 transitions. [2022-01-19 13:13:29,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 676 places, 581 transitions, 10675 flow [2022-01-19 13:13:30,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 655 places, 581 transitions, 10314 flow, removed 134 selfloop flow, removed 21 redundant places. [2022-01-19 13:13:30,078 INFO L242 Difference]: Finished difference. Result has 668 places, 453 transitions, 6955 flow [2022-01-19 13:13:30,078 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6501, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6955, PETRI_PLACES=668, PETRI_TRANSITIONS=453} [2022-01-19 13:13:30,078 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 481 predicate places. [2022-01-19 13:13:30,079 INFO L470 AbstractCegarLoop]: Abstraction has has 668 places, 453 transitions, 6955 flow [2022-01-19 13:13:30,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:30,079 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:30,079 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:30,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2022-01-19 13:13:30,079 INFO L402 AbstractCegarLoop]: === Iteration 327 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:30,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:30,079 INFO L85 PathProgramCache]: Analyzing trace with hash 581066740, now seen corresponding path program 23 times [2022-01-19 13:13:30,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:30,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522630099] [2022-01-19 13:13:30,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:30,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:30,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:30,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:30,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522630099] [2022-01-19 13:13:30,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522630099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:30,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:30,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:30,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169655177] [2022-01-19 13:13:30,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:30,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:30,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:30,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:30,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:30,189 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:30,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 453 transitions, 6955 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:30,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:30,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:30,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:31,220 INFO L129 PetriNetUnfolder]: 554/2148 cut-off events. [2022-01-19 13:13:31,220 INFO L130 PetriNetUnfolder]: For 56622/56657 co-relation queries the response was YES. [2022-01-19 13:13:31,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16824 conditions, 2148 events. 554/2148 cut-off events. For 56622/56657 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 15930 event pairs, 181 based on Foata normal form. 11/2091 useless extension candidates. Maximal degree in co-relation 16526. Up to 540 conditions per place. [2022-01-19 13:13:31,273 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 134 changer transitions 63/595 dead transitions. [2022-01-19 13:13:31,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 595 transitions, 11141 flow [2022-01-19 13:13:31,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:13:31,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:13:31,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4655 transitions. [2022-01-19 13:13:31,275 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-01-19 13:13:31,275 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4655 transitions. [2022-01-19 13:13:31,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4655 transitions. [2022-01-19 13:13:31,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:31,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4655 transitions. [2022-01-19 13:13:31,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.51724137931035) internal successors, (4655), 29 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:31,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:31,281 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:31,281 INFO L186 Difference]: Start difference. First operand has 668 places, 453 transitions, 6955 flow. Second operand 29 states and 4655 transitions. [2022-01-19 13:13:31,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 681 places, 595 transitions, 11141 flow [2022-01-19 13:13:31,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 595 transitions, 10808 flow, removed 109 selfloop flow, removed 14 redundant places. [2022-01-19 13:13:31,727 INFO L242 Difference]: Finished difference. Result has 681 places, 465 transitions, 7380 flow [2022-01-19 13:13:31,728 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6724, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7380, PETRI_PLACES=681, PETRI_TRANSITIONS=465} [2022-01-19 13:13:31,728 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 494 predicate places. [2022-01-19 13:13:31,728 INFO L470 AbstractCegarLoop]: Abstraction has has 681 places, 465 transitions, 7380 flow [2022-01-19 13:13:31,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:31,728 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:31,728 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:31,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2022-01-19 13:13:31,728 INFO L402 AbstractCegarLoop]: === Iteration 328 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:31,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:31,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1205096152, now seen corresponding path program 24 times [2022-01-19 13:13:31,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:31,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947807291] [2022-01-19 13:13:31,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:31,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:31,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:31,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:31,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947807291] [2022-01-19 13:13:31,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947807291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:31,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:31,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:31,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047269637] [2022-01-19 13:13:31,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:31,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:31,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:31,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:31,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:31,836 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:31,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 465 transitions, 7380 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:31,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:31,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:31,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:32,898 INFO L129 PetriNetUnfolder]: 556/2160 cut-off events. [2022-01-19 13:13:32,899 INFO L130 PetriNetUnfolder]: For 57522/57578 co-relation queries the response was YES. [2022-01-19 13:13:32,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17127 conditions, 2160 events. 556/2160 cut-off events. For 57522/57578 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16055 event pairs, 187 based on Foata normal form. 17/2107 useless extension candidates. Maximal degree in co-relation 16825. Up to 543 conditions per place. [2022-01-19 13:13:32,951 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 263 selfloop transitions, 134 changer transitions 61/599 dead transitions. [2022-01-19 13:13:32,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 599 transitions, 11477 flow [2022-01-19 13:13:32,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:13:32,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:13:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4655 transitions. [2022-01-19 13:13:32,954 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-01-19 13:13:32,954 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4655 transitions. [2022-01-19 13:13:32,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4655 transitions. [2022-01-19 13:13:32,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:32,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4655 transitions. [2022-01-19 13:13:32,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.51724137931035) internal successors, (4655), 29 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:32,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:32,960 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:32,960 INFO L186 Difference]: Start difference. First operand has 681 places, 465 transitions, 7380 flow. Second operand 29 states and 4655 transitions. [2022-01-19 13:13:32,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 599 transitions, 11477 flow [2022-01-19 13:13:33,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 599 transitions, 11166 flow, removed 78 selfloop flow, removed 13 redundant places. [2022-01-19 13:13:33,411 INFO L242 Difference]: Finished difference. Result has 695 places, 476 transitions, 7798 flow [2022-01-19 13:13:33,411 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7155, PETRI_DIFFERENCE_MINUEND_PLACES=654, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7798, PETRI_PLACES=695, PETRI_TRANSITIONS=476} [2022-01-19 13:13:33,411 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 508 predicate places. [2022-01-19 13:13:33,412 INFO L470 AbstractCegarLoop]: Abstraction has has 695 places, 476 transitions, 7798 flow [2022-01-19 13:13:33,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:33,412 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:33,412 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:33,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2022-01-19 13:13:33,412 INFO L402 AbstractCegarLoop]: === Iteration 329 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:33,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:33,412 INFO L85 PathProgramCache]: Analyzing trace with hash -93390314, now seen corresponding path program 25 times [2022-01-19 13:13:33,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:33,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551043402] [2022-01-19 13:13:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:33,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:33,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:33,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:33,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551043402] [2022-01-19 13:13:33,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551043402] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:33,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:33,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:33,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243915602] [2022-01-19 13:13:33,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:33,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:33,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:33,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:33,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:33,520 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:33,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 695 places, 476 transitions, 7798 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:33,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:33,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:33,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:34,586 INFO L129 PetriNetUnfolder]: 551/2149 cut-off events. [2022-01-19 13:13:34,587 INFO L130 PetriNetUnfolder]: For 57321/57379 co-relation queries the response was YES. [2022-01-19 13:13:34,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17011 conditions, 2149 events. 551/2149 cut-off events. For 57321/57379 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 15945 event pairs, 182 based on Foata normal form. 17/2096 useless extension candidates. Maximal degree in co-relation 16704. Up to 539 conditions per place. [2022-01-19 13:13:34,638 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 275 selfloop transitions, 128 changer transitions 63/607 dead transitions. [2022-01-19 13:13:34,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 607 transitions, 11738 flow [2022-01-19 13:13:34,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:13:34,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:13:34,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-01-19 13:13:34,640 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 13:13:34,640 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-01-19 13:13:34,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-01-19 13:13:34,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:34,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-01-19 13:13:34,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:34,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:34,646 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:34,646 INFO L186 Difference]: Start difference. First operand has 695 places, 476 transitions, 7798 flow. Second operand 30 states and 4815 transitions. [2022-01-19 13:13:34,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 607 transitions, 11738 flow [2022-01-19 13:13:35,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 698 places, 607 transitions, 11400 flow, removed 57 selfloop flow, removed 12 redundant places. [2022-01-19 13:13:35,107 INFO L242 Difference]: Finished difference. Result has 711 places, 481 transitions, 7948 flow [2022-01-19 13:13:35,107 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7497, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7948, PETRI_PLACES=711, PETRI_TRANSITIONS=481} [2022-01-19 13:13:35,107 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 524 predicate places. [2022-01-19 13:13:35,107 INFO L470 AbstractCegarLoop]: Abstraction has has 711 places, 481 transitions, 7948 flow [2022-01-19 13:13:35,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:35,108 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:35,108 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:35,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2022-01-19 13:13:35,108 INFO L402 AbstractCegarLoop]: === Iteration 330 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:35,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:35,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1404291102, now seen corresponding path program 26 times [2022-01-19 13:13:35,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:35,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76465914] [2022-01-19 13:13:35,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:35,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:35,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:35,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:35,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76465914] [2022-01-19 13:13:35,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76465914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:35,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:35,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:35,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582793569] [2022-01-19 13:13:35,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:35,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:35,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:35,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:35,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:35,215 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:35,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 481 transitions, 7948 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:35,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:35,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:35,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:36,262 INFO L129 PetriNetUnfolder]: 533/2120 cut-off events. [2022-01-19 13:13:36,262 INFO L130 PetriNetUnfolder]: For 56500/56556 co-relation queries the response was YES. [2022-01-19 13:13:36,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16697 conditions, 2120 events. 533/2120 cut-off events. For 56500/56556 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 15713 event pairs, 179 based on Foata normal form. 17/2069 useless extension candidates. Maximal degree in co-relation 16385. Up to 534 conditions per place. [2022-01-19 13:13:36,314 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 112 changer transitions 67/588 dead transitions. [2022-01-19 13:13:36,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 725 places, 588 transitions, 11233 flow [2022-01-19 13:13:36,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:13:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:13:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4806 transitions. [2022-01-19 13:13:36,317 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628571428571429 [2022-01-19 13:13:36,317 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4806 transitions. [2022-01-19 13:13:36,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4806 transitions. [2022-01-19 13:13:36,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:36,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4806 transitions. [2022-01-19 13:13:36,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.2) internal successors, (4806), 30 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:36,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:36,323 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:36,323 INFO L186 Difference]: Start difference. First operand has 711 places, 481 transitions, 7948 flow. Second operand 30 states and 4806 transitions. [2022-01-19 13:13:36,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 725 places, 588 transitions, 11233 flow [2022-01-19 13:13:36,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 711 places, 588 transitions, 10929 flow, removed 99 selfloop flow, removed 14 redundant places. [2022-01-19 13:13:36,770 INFO L242 Difference]: Finished difference. Result has 720 places, 459 transitions, 7336 flow [2022-01-19 13:13:36,771 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7694, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7336, PETRI_PLACES=720, PETRI_TRANSITIONS=459} [2022-01-19 13:13:36,771 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 533 predicate places. [2022-01-19 13:13:36,771 INFO L470 AbstractCegarLoop]: Abstraction has has 720 places, 459 transitions, 7336 flow [2022-01-19 13:13:36,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:36,771 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:36,771 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:36,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2022-01-19 13:13:36,771 INFO L402 AbstractCegarLoop]: === Iteration 331 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:36,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:36,772 INFO L85 PathProgramCache]: Analyzing trace with hash -72700492, now seen corresponding path program 27 times [2022-01-19 13:13:36,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:36,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712563873] [2022-01-19 13:13:36,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:36,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:36,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:36,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712563873] [2022-01-19 13:13:36,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712563873] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:36,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:36,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:36,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171664078] [2022-01-19 13:13:36,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:36,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:36,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:36,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:36,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:36,875 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:36,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 720 places, 459 transitions, 7336 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:36,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:36,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:36,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:37,870 INFO L129 PetriNetUnfolder]: 506/2032 cut-off events. [2022-01-19 13:13:37,870 INFO L130 PetriNetUnfolder]: For 55083/55120 co-relation queries the response was YES. [2022-01-19 13:13:37,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15920 conditions, 2032 events. 506/2032 cut-off events. For 55083/55120 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 14800 event pairs, 174 based on Foata normal form. 11/1976 useless extension candidates. Maximal degree in co-relation 15609. Up to 519 conditions per place. [2022-01-19 13:13:37,917 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 254 selfloop transitions, 88 changer transitions 66/549 dead transitions. [2022-01-19 13:13:37,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 719 places, 549 transitions, 10179 flow [2022-01-19 13:13:37,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 13:13:37,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 13:13:37,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4332 transitions. [2022-01-19 13:13:37,920 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764021164021164 [2022-01-19 13:13:37,920 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4332 transitions. [2022-01-19 13:13:37,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4332 transitions. [2022-01-19 13:13:37,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:37,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4332 transitions. [2022-01-19 13:13:37,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.44444444444446) internal successors, (4332), 27 states have internal predecessors, (4332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:37,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:37,927 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:37,927 INFO L186 Difference]: Start difference. First operand has 720 places, 459 transitions, 7336 flow. Second operand 27 states and 4332 transitions. [2022-01-19 13:13:37,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 719 places, 549 transitions, 10179 flow [2022-01-19 13:13:38,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 690 places, 549 transitions, 9722 flow, removed 57 selfloop flow, removed 29 redundant places. [2022-01-19 13:13:38,408 INFO L242 Difference]: Finished difference. Result has 697 places, 422 transitions, 6278 flow [2022-01-19 13:13:38,408 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6951, PETRI_DIFFERENCE_MINUEND_PLACES=664, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6278, PETRI_PLACES=697, PETRI_TRANSITIONS=422} [2022-01-19 13:13:38,408 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 510 predicate places. [2022-01-19 13:13:38,408 INFO L470 AbstractCegarLoop]: Abstraction has has 697 places, 422 transitions, 6278 flow [2022-01-19 13:13:38,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:38,409 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:38,409 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:38,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2022-01-19 13:13:38,409 INFO L402 AbstractCegarLoop]: === Iteration 332 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:38,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:38,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1545404012, now seen corresponding path program 28 times [2022-01-19 13:13:38,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:38,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60425981] [2022-01-19 13:13:38,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:38,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:38,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:38,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60425981] [2022-01-19 13:13:38,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60425981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:38,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:38,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:38,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437774705] [2022-01-19 13:13:38,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:38,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:38,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:38,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:38,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:38,514 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:38,515 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 422 transitions, 6278 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:38,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:38,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:38,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:39,484 INFO L129 PetriNetUnfolder]: 487/1967 cut-off events. [2022-01-19 13:13:39,485 INFO L130 PetriNetUnfolder]: For 51682/51719 co-relation queries the response was YES. [2022-01-19 13:13:39,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15196 conditions, 1967 events. 487/1967 cut-off events. For 51682/51719 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14163 event pairs, 171 based on Foata normal form. 11/1911 useless extension candidates. Maximal degree in co-relation 14894. Up to 508 conditions per place. [2022-01-19 13:13:39,533 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 235 selfloop transitions, 82 changer transitions 65/523 dead transitions. [2022-01-19 13:13:39,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 523 transitions, 9296 flow [2022-01-19 13:13:39,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:13:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:13:39,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4487 transitions. [2022-01-19 13:13:39,536 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763095238095238 [2022-01-19 13:13:39,536 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4487 transitions. [2022-01-19 13:13:39,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4487 transitions. [2022-01-19 13:13:39,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:39,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4487 transitions. [2022-01-19 13:13:39,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.25) internal successors, (4487), 28 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:39,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:39,541 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:39,541 INFO L186 Difference]: Start difference. First operand has 697 places, 422 transitions, 6278 flow. Second operand 28 states and 4487 transitions. [2022-01-19 13:13:39,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 523 transitions, 9296 flow [2022-01-19 13:13:39,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 523 transitions, 8559 flow, removed 50 selfloop flow, removed 38 redundant places. [2022-01-19 13:13:39,894 INFO L242 Difference]: Finished difference. Result has 655 places, 397 transitions, 5322 flow [2022-01-19 13:13:39,895 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5684, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=5322, PETRI_PLACES=655, PETRI_TRANSITIONS=397} [2022-01-19 13:13:39,895 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 468 predicate places. [2022-01-19 13:13:39,895 INFO L470 AbstractCegarLoop]: Abstraction has has 655 places, 397 transitions, 5322 flow [2022-01-19 13:13:39,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:39,895 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:39,895 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:39,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2022-01-19 13:13:39,895 INFO L402 AbstractCegarLoop]: === Iteration 333 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:39,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:39,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1810144978, now seen corresponding path program 29 times [2022-01-19 13:13:39,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:39,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205966739] [2022-01-19 13:13:39,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:39,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:40,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:40,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:40,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205966739] [2022-01-19 13:13:40,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205966739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:40,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:40,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:40,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544431561] [2022-01-19 13:13:40,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:40,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:40,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:40,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:40,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:40,002 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:40,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 397 transitions, 5322 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:40,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:40,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:40,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:40,932 INFO L129 PetriNetUnfolder]: 454/1836 cut-off events. [2022-01-19 13:13:40,932 INFO L130 PetriNetUnfolder]: For 43585/43619 co-relation queries the response was YES. [2022-01-19 13:13:40,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13677 conditions, 1836 events. 454/1836 cut-off events. For 43585/43619 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 12920 event pairs, 166 based on Foata normal form. 11/1782 useless extension candidates. Maximal degree in co-relation 13387. Up to 487 conditions per place. [2022-01-19 13:13:40,979 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 208 selfloop transitions, 57 changer transitions 68/474 dead transitions. [2022-01-19 13:13:40,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 474 transitions, 7605 flow [2022-01-19 13:13:40,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:13:40,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:13:40,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4783 transitions. [2022-01-19 13:13:40,982 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592063492063492 [2022-01-19 13:13:40,982 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4783 transitions. [2022-01-19 13:13:40,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4783 transitions. [2022-01-19 13:13:40,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:40,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4783 transitions. [2022-01-19 13:13:40,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.43333333333334) internal successors, (4783), 30 states have internal predecessors, (4783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:40,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:40,988 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:40,988 INFO L186 Difference]: Start difference. First operand has 655 places, 397 transitions, 5322 flow. Second operand 30 states and 4783 transitions. [2022-01-19 13:13:40,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 474 transitions, 7605 flow [2022-01-19 13:13:41,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 474 transitions, 7141 flow, removed 36 selfloop flow, removed 34 redundant places. [2022-01-19 13:13:41,289 INFO L242 Difference]: Finished difference. Result has 622 places, 346 transitions, 4005 flow [2022-01-19 13:13:41,289 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4902, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4005, PETRI_PLACES=622, PETRI_TRANSITIONS=346} [2022-01-19 13:13:41,289 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 435 predicate places. [2022-01-19 13:13:41,289 INFO L470 AbstractCegarLoop]: Abstraction has has 622 places, 346 transitions, 4005 flow [2022-01-19 13:13:41,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:41,290 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:41,290 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:41,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2022-01-19 13:13:41,290 INFO L402 AbstractCegarLoop]: === Iteration 334 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:41,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:41,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1755102784, now seen corresponding path program 30 times [2022-01-19 13:13:41,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:41,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946274064] [2022-01-19 13:13:41,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:41,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:41,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:41,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946274064] [2022-01-19 13:13:41,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946274064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:41,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:41,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:41,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955669123] [2022-01-19 13:13:41,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:41,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:41,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:41,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:41,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:41,395 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:41,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 346 transitions, 4005 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:41,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:41,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:41,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:42,549 INFO L129 PetriNetUnfolder]: 478/1908 cut-off events. [2022-01-19 13:13:42,549 INFO L130 PetriNetUnfolder]: For 44553/44580 co-relation queries the response was YES. [2022-01-19 13:13:42,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14153 conditions, 1908 events. 478/1908 cut-off events. For 44553/44580 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 13539 event pairs, 182 based on Foata normal form. 5/1848 useless extension candidates. Maximal degree in co-relation 13877. Up to 487 conditions per place. [2022-01-19 13:13:42,590 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 208 selfloop transitions, 72 changer transitions 66/487 dead transitions. [2022-01-19 13:13:42,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 487 transitions, 7947 flow [2022-01-19 13:13:42,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:13:42,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:13:42,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6072 transitions. [2022-01-19 13:13:42,593 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609022556390977 [2022-01-19 13:13:42,593 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6072 transitions. [2022-01-19 13:13:42,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6072 transitions. [2022-01-19 13:13:42,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:42,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6072 transitions. [2022-01-19 13:13:42,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.78947368421052) internal successors, (6072), 38 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:42,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:42,601 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:42,601 INFO L186 Difference]: Start difference. First operand has 622 places, 346 transitions, 4005 flow. Second operand 38 states and 6072 transitions. [2022-01-19 13:13:42,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 487 transitions, 7947 flow [2022-01-19 13:13:42,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 487 transitions, 7152 flow, removed 85 selfloop flow, removed 38 redundant places. [2022-01-19 13:13:42,826 INFO L242 Difference]: Finished difference. Result has 583 places, 364 transitions, 4210 flow [2022-01-19 13:13:42,826 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3527, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4210, PETRI_PLACES=583, PETRI_TRANSITIONS=364} [2022-01-19 13:13:42,827 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 396 predicate places. [2022-01-19 13:13:42,827 INFO L470 AbstractCegarLoop]: Abstraction has has 583 places, 364 transitions, 4210 flow [2022-01-19 13:13:42,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:42,827 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:42,827 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:42,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2022-01-19 13:13:42,827 INFO L402 AbstractCegarLoop]: === Iteration 335 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:42,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:42,828 INFO L85 PathProgramCache]: Analyzing trace with hash -853020034, now seen corresponding path program 31 times [2022-01-19 13:13:42,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:42,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214487576] [2022-01-19 13:13:42,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:42,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:42,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:42,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:42,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214487576] [2022-01-19 13:13:42,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214487576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:42,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:42,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:42,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938545684] [2022-01-19 13:13:42,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:42,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:42,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:42,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:42,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:42,941 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:42,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 364 transitions, 4210 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:42,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:42,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:42,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:44,075 INFO L129 PetriNetUnfolder]: 506/1981 cut-off events. [2022-01-19 13:13:44,075 INFO L130 PetriNetUnfolder]: For 44801/44844 co-relation queries the response was YES. [2022-01-19 13:13:44,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14499 conditions, 1981 events. 506/1981 cut-off events. For 44801/44844 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 14194 event pairs, 197 based on Foata normal form. 11/1925 useless extension candidates. Maximal degree in co-relation 14227. Up to 487 conditions per place. [2022-01-19 13:13:44,109 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 214 selfloop transitions, 84 changer transitions 66/505 dead transitions. [2022-01-19 13:13:44,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 505 transitions, 8245 flow [2022-01-19 13:13:44,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:13:44,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:13:44,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5604 transitions. [2022-01-19 13:13:44,111 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624489795918368 [2022-01-19 13:13:44,111 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5604 transitions. [2022-01-19 13:13:44,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5604 transitions. [2022-01-19 13:13:44,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:44,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5604 transitions. [2022-01-19 13:13:44,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.11428571428573) internal successors, (5604), 35 states have internal predecessors, (5604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:44,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:44,118 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:44,118 INFO L186 Difference]: Start difference. First operand has 583 places, 364 transitions, 4210 flow. Second operand 35 states and 5604 transitions. [2022-01-19 13:13:44,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 505 transitions, 8245 flow [2022-01-19 13:13:44,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 505 transitions, 7576 flow, removed 291 selfloop flow, removed 16 redundant places. [2022-01-19 13:13:44,349 INFO L242 Difference]: Finished difference. Result has 603 places, 383 transitions, 4624 flow [2022-01-19 13:13:44,349 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3920, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4624, PETRI_PLACES=603, PETRI_TRANSITIONS=383} [2022-01-19 13:13:44,349 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 416 predicate places. [2022-01-19 13:13:44,349 INFO L470 AbstractCegarLoop]: Abstraction has has 603 places, 383 transitions, 4624 flow [2022-01-19 13:13:44,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:44,350 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:44,350 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:44,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2022-01-19 13:13:44,350 INFO L402 AbstractCegarLoop]: === Iteration 336 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:44,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:44,350 INFO L85 PathProgramCache]: Analyzing trace with hash 418332166, now seen corresponding path program 32 times [2022-01-19 13:13:44,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:44,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408214423] [2022-01-19 13:13:44,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:44,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:44,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:44,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408214423] [2022-01-19 13:13:44,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408214423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:44,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:44,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:44,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990628316] [2022-01-19 13:13:44,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:44,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:44,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:44,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:44,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:44,456 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:44,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 383 transitions, 4624 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:44,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:44,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:44,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:45,588 INFO L129 PetriNetUnfolder]: 530/2049 cut-off events. [2022-01-19 13:13:45,588 INFO L130 PetriNetUnfolder]: For 49287/49333 co-relation queries the response was YES. [2022-01-19 13:13:45,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15404 conditions, 2049 events. 530/2049 cut-off events. For 49287/49333 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 14860 event pairs, 195 based on Foata normal form. 15/1995 useless extension candidates. Maximal degree in co-relation 15120. Up to 487 conditions per place. [2022-01-19 13:13:45,635 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 227 selfloop transitions, 88 changer transitions 66/522 dead transitions. [2022-01-19 13:13:45,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 522 transitions, 8727 flow [2022-01-19 13:13:45,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:13:45,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:13:45,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5918 transitions. [2022-01-19 13:13:45,638 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616473616473617 [2022-01-19 13:13:45,638 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5918 transitions. [2022-01-19 13:13:45,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5918 transitions. [2022-01-19 13:13:45,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:45,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5918 transitions. [2022-01-19 13:13:45,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.94594594594594) internal successors, (5918), 37 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:45,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:45,645 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:45,645 INFO L186 Difference]: Start difference. First operand has 603 places, 383 transitions, 4624 flow. Second operand 37 states and 5918 transitions. [2022-01-19 13:13:45,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 522 transitions, 8727 flow [2022-01-19 13:13:45,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 522 transitions, 8196 flow, removed 200 selfloop flow, removed 20 redundant places. [2022-01-19 13:13:45,929 INFO L242 Difference]: Finished difference. Result has 623 places, 400 transitions, 5121 flow [2022-01-19 13:13:45,929 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4417, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5121, PETRI_PLACES=623, PETRI_TRANSITIONS=400} [2022-01-19 13:13:45,929 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 436 predicate places. [2022-01-19 13:13:45,929 INFO L470 AbstractCegarLoop]: Abstraction has has 623 places, 400 transitions, 5121 flow [2022-01-19 13:13:45,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:45,929 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:45,930 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:45,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2022-01-19 13:13:45,930 INFO L402 AbstractCegarLoop]: === Iteration 337 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:45,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:45,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1375996336, now seen corresponding path program 33 times [2022-01-19 13:13:45,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:45,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860630564] [2022-01-19 13:13:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:45,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:46,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:46,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:46,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860630564] [2022-01-19 13:13:46,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860630564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:46,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:46,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:46,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407310001] [2022-01-19 13:13:46,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:46,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:46,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:46,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:46,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:46,041 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:46,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 400 transitions, 5121 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:46,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:46,041 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:46,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:47,169 INFO L129 PetriNetUnfolder]: 527/2067 cut-off events. [2022-01-19 13:13:47,169 INFO L130 PetriNetUnfolder]: For 50205/50230 co-relation queries the response was YES. [2022-01-19 13:13:47,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15468 conditions, 2067 events. 527/2067 cut-off events. For 50205/50230 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 15100 event pairs, 203 based on Foata normal form. 7/2006 useless extension candidates. Maximal degree in co-relation 15176. Up to 487 conditions per place. [2022-01-19 13:13:47,219 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 231 selfloop transitions, 92 changer transitions 68/532 dead transitions. [2022-01-19 13:13:47,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 532 transitions, 9139 flow [2022-01-19 13:13:47,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:13:47,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:13:47,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5763 transitions. [2022-01-19 13:13:47,222 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623015873015873 [2022-01-19 13:13:47,222 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5763 transitions. [2022-01-19 13:13:47,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5763 transitions. [2022-01-19 13:13:47,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:47,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5763 transitions. [2022-01-19 13:13:47,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.08333333333334) internal successors, (5763), 36 states have internal predecessors, (5763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:47,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:47,231 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:47,231 INFO L186 Difference]: Start difference. First operand has 623 places, 400 transitions, 5121 flow. Second operand 36 states and 5763 transitions. [2022-01-19 13:13:47,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 532 transitions, 9139 flow [2022-01-19 13:13:47,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 532 transitions, 8710 flow, removed 171 selfloop flow, removed 19 redundant places. [2022-01-19 13:13:47,655 INFO L242 Difference]: Finished difference. Result has 641 places, 410 transitions, 5525 flow [2022-01-19 13:13:47,655 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4939, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5525, PETRI_PLACES=641, PETRI_TRANSITIONS=410} [2022-01-19 13:13:47,655 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 454 predicate places. [2022-01-19 13:13:47,655 INFO L470 AbstractCegarLoop]: Abstraction has has 641 places, 410 transitions, 5525 flow [2022-01-19 13:13:47,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:47,656 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:47,656 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:47,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2022-01-19 13:13:47,656 INFO L402 AbstractCegarLoop]: === Iteration 338 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:47,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:47,656 INFO L85 PathProgramCache]: Analyzing trace with hash -244700762, now seen corresponding path program 34 times [2022-01-19 13:13:47,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:47,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107238610] [2022-01-19 13:13:47,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:47,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:47,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:47,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:47,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107238610] [2022-01-19 13:13:47,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107238610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:47,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:47,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:47,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295412661] [2022-01-19 13:13:47,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:47,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:47,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:47,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:47,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:47,790 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:47,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 410 transitions, 5525 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:47,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:47,791 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:47,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:49,123 INFO L129 PetriNetUnfolder]: 568/2227 cut-off events. [2022-01-19 13:13:49,123 INFO L130 PetriNetUnfolder]: For 56685/56729 co-relation queries the response was YES. [2022-01-19 13:13:49,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16820 conditions, 2227 events. 568/2227 cut-off events. For 56685/56729 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 16774 event pairs, 198 based on Foata normal form. 9/2173 useless extension candidates. Maximal degree in co-relation 16520. Up to 489 conditions per place. [2022-01-19 13:13:49,174 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 115 changer transitions 85/598 dead transitions. [2022-01-19 13:13:49,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 598 transitions, 10656 flow [2022-01-19 13:13:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 13:13:49,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 13:13:49,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7340 transitions. [2022-01-19 13:13:49,177 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598343685300207 [2022-01-19 13:13:49,177 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7340 transitions. [2022-01-19 13:13:49,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7340 transitions. [2022-01-19 13:13:49,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:49,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7340 transitions. [2022-01-19 13:13:49,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.56521739130434) internal successors, (7340), 46 states have internal predecessors, (7340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:49,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:49,186 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:49,186 INFO L186 Difference]: Start difference. First operand has 641 places, 410 transitions, 5525 flow. Second operand 46 states and 7340 transitions. [2022-01-19 13:13:49,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 598 transitions, 10656 flow [2022-01-19 13:13:49,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 598 transitions, 10133 flow, removed 160 selfloop flow, removed 20 redundant places. [2022-01-19 13:13:49,539 INFO L242 Difference]: Finished difference. Result has 677 places, 436 transitions, 6115 flow [2022-01-19 13:13:49,540 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5231, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6115, PETRI_PLACES=677, PETRI_TRANSITIONS=436} [2022-01-19 13:13:49,540 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 490 predicate places. [2022-01-19 13:13:49,540 INFO L470 AbstractCegarLoop]: Abstraction has has 677 places, 436 transitions, 6115 flow [2022-01-19 13:13:49,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:49,540 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:49,540 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:49,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2022-01-19 13:13:49,540 INFO L402 AbstractCegarLoop]: === Iteration 339 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:49,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:49,541 INFO L85 PathProgramCache]: Analyzing trace with hash -971988702, now seen corresponding path program 35 times [2022-01-19 13:13:49,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:49,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216813383] [2022-01-19 13:13:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:49,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:49,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:49,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216813383] [2022-01-19 13:13:49,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216813383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:49,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:49,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:49,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998750983] [2022-01-19 13:13:49,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:49,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:49,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:49,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:49,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:49,651 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:49,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 436 transitions, 6115 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:49,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:49,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:49,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:51,042 INFO L129 PetriNetUnfolder]: 582/2270 cut-off events. [2022-01-19 13:13:51,042 INFO L130 PetriNetUnfolder]: For 58515/58553 co-relation queries the response was YES. [2022-01-19 13:13:51,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17373 conditions, 2270 events. 582/2270 cut-off events. For 58515/58553 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 17279 event pairs, 228 based on Foata normal form. 9/2207 useless extension candidates. Maximal degree in co-relation 17058. Up to 510 conditions per place. [2022-01-19 13:13:51,098 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 242 selfloop transitions, 127 changer transitions 82/592 dead transitions. [2022-01-19 13:13:51,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 592 transitions, 10564 flow [2022-01-19 13:13:51,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 13:13:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 13:13:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7186 transitions. [2022-01-19 13:13:51,101 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604232804232804 [2022-01-19 13:13:51,101 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7186 transitions. [2022-01-19 13:13:51,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7186 transitions. [2022-01-19 13:13:51,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:51,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7186 transitions. [2022-01-19 13:13:51,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.6888888888889) internal successors, (7186), 45 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:51,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:51,111 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:51,111 INFO L186 Difference]: Start difference. First operand has 677 places, 436 transitions, 6115 flow. Second operand 45 states and 7186 transitions. [2022-01-19 13:13:51,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 688 places, 592 transitions, 10564 flow [2022-01-19 13:13:51,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 660 places, 592 transitions, 10176 flow, removed 159 selfloop flow, removed 28 redundant places. [2022-01-19 13:13:51,511 INFO L242 Difference]: Finished difference. Result has 694 places, 453 transitions, 6709 flow [2022-01-19 13:13:51,511 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5934, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=6709, PETRI_PLACES=694, PETRI_TRANSITIONS=453} [2022-01-19 13:13:51,511 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 507 predicate places. [2022-01-19 13:13:51,512 INFO L470 AbstractCegarLoop]: Abstraction has has 694 places, 453 transitions, 6709 flow [2022-01-19 13:13:51,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:51,512 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:51,512 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:51,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2022-01-19 13:13:51,512 INFO L402 AbstractCegarLoop]: === Iteration 340 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:51,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:51,512 INFO L85 PathProgramCache]: Analyzing trace with hash -395274568, now seen corresponding path program 36 times [2022-01-19 13:13:51,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:51,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594078697] [2022-01-19 13:13:51,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:51,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:51,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:51,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594078697] [2022-01-19 13:13:51,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594078697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:51,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:51,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:51,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910029087] [2022-01-19 13:13:51,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:51,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:51,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:51,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:51,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:51,619 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:51,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 694 places, 453 transitions, 6709 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:51,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:51,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:51,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:52,903 INFO L129 PetriNetUnfolder]: 576/2217 cut-off events. [2022-01-19 13:13:52,903 INFO L130 PetriNetUnfolder]: For 61790/61828 co-relation queries the response was YES. [2022-01-19 13:13:52,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17432 conditions, 2217 events. 576/2217 cut-off events. For 61790/61828 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 16644 event pairs, 202 based on Foata normal form. 9/2157 useless extension candidates. Maximal degree in co-relation 17109. Up to 506 conditions per place. [2022-01-19 13:13:52,958 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 265 selfloop transitions, 121 changer transitions 94/621 dead transitions. [2022-01-19 13:13:52,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 705 places, 621 transitions, 11724 flow [2022-01-19 13:13:52,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 13:13:52,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 13:13:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7025 transitions. [2022-01-19 13:13:52,961 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602813852813853 [2022-01-19 13:13:52,961 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7025 transitions. [2022-01-19 13:13:52,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7025 transitions. [2022-01-19 13:13:52,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:52,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7025 transitions. [2022-01-19 13:13:52,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6590909090909) internal successors, (7025), 44 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:52,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:52,970 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:52,970 INFO L186 Difference]: Start difference. First operand has 694 places, 453 transitions, 6709 flow. Second operand 44 states and 7025 transitions. [2022-01-19 13:13:52,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 705 places, 621 transitions, 11724 flow [2022-01-19 13:13:53,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 621 transitions, 11244 flow, removed 175 selfloop flow, removed 31 redundant places. [2022-01-19 13:13:53,389 INFO L242 Difference]: Finished difference. Result has 707 places, 461 transitions, 7109 flow [2022-01-19 13:13:53,389 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6424, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=7109, PETRI_PLACES=707, PETRI_TRANSITIONS=461} [2022-01-19 13:13:53,389 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 520 predicate places. [2022-01-19 13:13:53,389 INFO L470 AbstractCegarLoop]: Abstraction has has 707 places, 461 transitions, 7109 flow [2022-01-19 13:13:53,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:53,390 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:53,390 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:53,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2022-01-19 13:13:53,390 INFO L402 AbstractCegarLoop]: === Iteration 341 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:53,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:53,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1497482432, now seen corresponding path program 37 times [2022-01-19 13:13:53,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:53,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716566] [2022-01-19 13:13:53,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:53,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:53,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:53,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716566] [2022-01-19 13:13:53,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716566] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:53,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:53,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:53,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918054119] [2022-01-19 13:13:53,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:53,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:53,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:53,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:53,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:53,502 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:53,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 707 places, 461 transitions, 7109 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:53,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:53,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:53,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:54,762 INFO L129 PetriNetUnfolder]: 594/2282 cut-off events. [2022-01-19 13:13:54,762 INFO L130 PetriNetUnfolder]: For 62442/62467 co-relation queries the response was YES. [2022-01-19 13:13:54,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17973 conditions, 2282 events. 594/2282 cut-off events. For 62442/62467 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 17380 event pairs, 225 based on Foata normal form. 5/2212 useless extension candidates. Maximal degree in co-relation 17645. Up to 527 conditions per place. [2022-01-19 13:13:54,818 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 251 selfloop transitions, 138 changer transitions 70/600 dead transitions. [2022-01-19 13:13:54,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 600 transitions, 11146 flow [2022-01-19 13:13:54,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:13:54,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:13:54,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6084 transitions. [2022-01-19 13:13:54,821 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762406015037594 [2022-01-19 13:13:54,821 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6084 transitions. [2022-01-19 13:13:54,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6084 transitions. [2022-01-19 13:13:54,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:54,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6084 transitions. [2022-01-19 13:13:54,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.10526315789474) internal successors, (6084), 38 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:54,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:54,828 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:54,828 INFO L186 Difference]: Start difference. First operand has 707 places, 461 transitions, 7109 flow. Second operand 38 states and 6084 transitions. [2022-01-19 13:13:54,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 600 transitions, 11146 flow [2022-01-19 13:13:55,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 600 transitions, 10573 flow, removed 162 selfloop flow, removed 36 redundant places. [2022-01-19 13:13:55,301 INFO L242 Difference]: Finished difference. Result has 700 places, 481 transitions, 7558 flow [2022-01-19 13:13:55,301 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6693, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7558, PETRI_PLACES=700, PETRI_TRANSITIONS=481} [2022-01-19 13:13:55,301 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 513 predicate places. [2022-01-19 13:13:55,302 INFO L470 AbstractCegarLoop]: Abstraction has has 700 places, 481 transitions, 7558 flow [2022-01-19 13:13:55,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:55,302 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:55,302 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:55,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2022-01-19 13:13:55,302 INFO L402 AbstractCegarLoop]: === Iteration 342 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:55,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:55,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1649841138, now seen corresponding path program 38 times [2022-01-19 13:13:55,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:55,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880005942] [2022-01-19 13:13:55,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:55,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:55,408 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 13:13:55,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:55,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880005942] [2022-01-19 13:13:55,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880005942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:55,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:55,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:55,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753402595] [2022-01-19 13:13:55,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:55,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:55,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:55,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:55,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:55,410 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:55,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 700 places, 481 transitions, 7558 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:55,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:55,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:55,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:56,626 INFO L129 PetriNetUnfolder]: 588/2262 cut-off events. [2022-01-19 13:13:56,626 INFO L130 PetriNetUnfolder]: For 59756/59794 co-relation queries the response was YES. [2022-01-19 13:13:56,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17678 conditions, 2262 events. 588/2262 cut-off events. For 59756/59794 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17183 event pairs, 221 based on Foata normal form. 9/2197 useless extension candidates. Maximal degree in co-relation 17359. Up to 523 conditions per place. [2022-01-19 13:13:56,682 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 253 selfloop transitions, 139 changer transitions 72/605 dead transitions. [2022-01-19 13:13:56,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 712 places, 605 transitions, 11325 flow [2022-01-19 13:13:56,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:13:56,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:13:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5924 transitions. [2022-01-19 13:13:56,684 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624195624195624 [2022-01-19 13:13:56,684 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5924 transitions. [2022-01-19 13:13:56,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5924 transitions. [2022-01-19 13:13:56,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:56,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5924 transitions. [2022-01-19 13:13:56,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1081081081081) internal successors, (5924), 37 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:56,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:56,691 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:56,692 INFO L186 Difference]: Start difference. First operand has 700 places, 481 transitions, 7558 flow. Second operand 37 states and 5924 transitions. [2022-01-19 13:13:56,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 712 places, 605 transitions, 11325 flow [2022-01-19 13:13:57,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 693 places, 605 transitions, 10954 flow, removed 126 selfloop flow, removed 19 redundant places. [2022-01-19 13:13:57,130 INFO L242 Difference]: Finished difference. Result has 717 places, 486 transitions, 7891 flow [2022-01-19 13:13:57,130 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7328, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7891, PETRI_PLACES=717, PETRI_TRANSITIONS=486} [2022-01-19 13:13:57,130 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 530 predicate places. [2022-01-19 13:13:57,130 INFO L470 AbstractCegarLoop]: Abstraction has has 717 places, 486 transitions, 7891 flow [2022-01-19 13:13:57,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:57,131 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:57,131 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:57,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2022-01-19 13:13:57,131 INFO L402 AbstractCegarLoop]: === Iteration 343 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:57,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:57,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1647068248, now seen corresponding path program 39 times [2022-01-19 13:13:57,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:57,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507241415] [2022-01-19 13:13:57,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:57,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:57,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:57,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:57,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507241415] [2022-01-19 13:13:57,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507241415] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:57,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:57,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:57,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583407406] [2022-01-19 13:13:57,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:57,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:57,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:57,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:57,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:57,246 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:57,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 486 transitions, 7891 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:57,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:57,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:57,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:13:58,514 INFO L129 PetriNetUnfolder]: 584/2295 cut-off events. [2022-01-19 13:13:58,514 INFO L130 PetriNetUnfolder]: For 61157/61199 co-relation queries the response was YES. [2022-01-19 13:13:58,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17851 conditions, 2295 events. 584/2295 cut-off events. For 61157/61199 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 17538 event pairs, 203 based on Foata normal form. 9/2241 useless extension candidates. Maximal degree in co-relation 17524. Up to 519 conditions per place. [2022-01-19 13:13:58,574 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 275 selfloop transitions, 135 changer transitions 76/627 dead transitions. [2022-01-19 13:13:58,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 731 places, 627 transitions, 12222 flow [2022-01-19 13:13:58,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:13:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:13:58,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6078 transitions. [2022-01-19 13:13:58,577 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616541353383459 [2022-01-19 13:13:58,577 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6078 transitions. [2022-01-19 13:13:58,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6078 transitions. [2022-01-19 13:13:58,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:13:58,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6078 transitions. [2022-01-19 13:13:58,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.94736842105263) internal successors, (6078), 38 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:58,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:58,585 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:58,585 INFO L186 Difference]: Start difference. First operand has 717 places, 486 transitions, 7891 flow. Second operand 38 states and 6078 transitions. [2022-01-19 13:13:58,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 731 places, 627 transitions, 12222 flow [2022-01-19 13:13:59,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 627 transitions, 11819 flow, removed 123 selfloop flow, removed 22 redundant places. [2022-01-19 13:13:59,092 INFO L242 Difference]: Finished difference. Result has 732 places, 491 transitions, 8175 flow [2022-01-19 13:13:59,093 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7630, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8175, PETRI_PLACES=732, PETRI_TRANSITIONS=491} [2022-01-19 13:13:59,093 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 545 predicate places. [2022-01-19 13:13:59,093 INFO L470 AbstractCegarLoop]: Abstraction has has 732 places, 491 transitions, 8175 flow [2022-01-19 13:13:59,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:59,093 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:13:59,093 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:13:59,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2022-01-19 13:13:59,093 INFO L402 AbstractCegarLoop]: === Iteration 344 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:13:59,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:13:59,094 INFO L85 PathProgramCache]: Analyzing trace with hash -280414778, now seen corresponding path program 40 times [2022-01-19 13:13:59,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:13:59,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371253673] [2022-01-19 13:13:59,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:13:59,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:13:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:13:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:13:59,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:13:59,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371253673] [2022-01-19 13:13:59,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371253673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:13:59,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:13:59,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:13:59,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36478999] [2022-01-19 13:13:59,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:13:59,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:13:59,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:13:59,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:13:59,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:13:59,202 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:13:59,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 491 transitions, 8175 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:13:59,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:13:59,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:13:59,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:00,445 INFO L129 PetriNetUnfolder]: 593/2298 cut-off events. [2022-01-19 13:14:00,445 INFO L130 PetriNetUnfolder]: For 62620/62643 co-relation queries the response was YES. [2022-01-19 13:14:00,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18112 conditions, 2298 events. 593/2298 cut-off events. For 62620/62643 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 17516 event pairs, 219 based on Foata normal form. 5/2234 useless extension candidates. Maximal degree in co-relation 17780. Up to 532 conditions per place. [2022-01-19 13:14:00,505 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 146 changer transitions 77/632 dead transitions. [2022-01-19 13:14:00,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 743 places, 632 transitions, 12490 flow [2022-01-19 13:14:00,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:14:00,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:14:00,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5763 transitions. [2022-01-19 13:14:00,508 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623015873015873 [2022-01-19 13:14:00,508 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5763 transitions. [2022-01-19 13:14:00,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5763 transitions. [2022-01-19 13:14:00,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:00,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5763 transitions. [2022-01-19 13:14:00,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.08333333333334) internal successors, (5763), 36 states have internal predecessors, (5763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:00,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:00,515 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:00,515 INFO L186 Difference]: Start difference. First operand has 732 places, 491 transitions, 8175 flow. Second operand 36 states and 5763 transitions. [2022-01-19 13:14:00,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 743 places, 632 transitions, 12490 flow [2022-01-19 13:14:01,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 721 places, 632 transitions, 12136 flow, removed 110 selfloop flow, removed 22 redundant places. [2022-01-19 13:14:01,032 INFO L242 Difference]: Finished difference. Result has 744 places, 507 transitions, 8749 flow [2022-01-19 13:14:01,032 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7915, PETRI_DIFFERENCE_MINUEND_PLACES=686, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8749, PETRI_PLACES=744, PETRI_TRANSITIONS=507} [2022-01-19 13:14:01,032 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 557 predicate places. [2022-01-19 13:14:01,032 INFO L470 AbstractCegarLoop]: Abstraction has has 744 places, 507 transitions, 8749 flow [2022-01-19 13:14:01,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:01,033 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:01,033 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:01,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2022-01-19 13:14:01,033 INFO L402 AbstractCegarLoop]: === Iteration 345 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:01,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:01,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1947638806, now seen corresponding path program 41 times [2022-01-19 13:14:01,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:01,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771647903] [2022-01-19 13:14:01,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:01,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:01,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:01,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771647903] [2022-01-19 13:14:01,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771647903] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:01,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:01,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:01,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564171890] [2022-01-19 13:14:01,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:01,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:01,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:01,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:01,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:01,145 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:01,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 507 transitions, 8749 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:01,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:01,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:01,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:02,469 INFO L129 PetriNetUnfolder]: 618/2373 cut-off events. [2022-01-19 13:14:02,469 INFO L130 PetriNetUnfolder]: For 67780/67805 co-relation queries the response was YES. [2022-01-19 13:14:02,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19021 conditions, 2373 events. 618/2373 cut-off events. For 67780/67805 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 18336 event pairs, 219 based on Foata normal form. 5/2309 useless extension candidates. Maximal degree in co-relation 18685. Up to 545 conditions per place. [2022-01-19 13:14:02,530 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 294 selfloop transitions, 145 changer transitions 73/653 dead transitions. [2022-01-19 13:14:02,530 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 653 transitions, 13313 flow [2022-01-19 13:14:02,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:14:02,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:14:02,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6080 transitions. [2022-01-19 13:14:02,533 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 13:14:02,533 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6080 transitions. [2022-01-19 13:14:02,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6080 transitions. [2022-01-19 13:14:02,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:02,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6080 transitions. [2022-01-19 13:14:02,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.0) internal successors, (6080), 38 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:02,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:02,540 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:02,540 INFO L186 Difference]: Start difference. First operand has 744 places, 507 transitions, 8749 flow. Second operand 38 states and 6080 transitions. [2022-01-19 13:14:02,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 759 places, 653 transitions, 13313 flow [2022-01-19 13:14:03,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 735 places, 653 transitions, 12776 flow, removed 135 selfloop flow, removed 24 redundant places. [2022-01-19 13:14:03,129 INFO L242 Difference]: Finished difference. Result has 758 places, 527 transitions, 9333 flow [2022-01-19 13:14:03,129 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8366, PETRI_DIFFERENCE_MINUEND_PLACES=698, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9333, PETRI_PLACES=758, PETRI_TRANSITIONS=527} [2022-01-19 13:14:03,129 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 571 predicate places. [2022-01-19 13:14:03,130 INFO L470 AbstractCegarLoop]: Abstraction has has 758 places, 527 transitions, 9333 flow [2022-01-19 13:14:03,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:03,130 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:03,130 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:03,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2022-01-19 13:14:03,130 INFO L402 AbstractCegarLoop]: === Iteration 346 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:03,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:03,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1834953644, now seen corresponding path program 42 times [2022-01-19 13:14:03,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:03,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742659606] [2022-01-19 13:14:03,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:03,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:03,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:03,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742659606] [2022-01-19 13:14:03,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742659606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:03,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:03,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:03,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389247340] [2022-01-19 13:14:03,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:03,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:03,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:03,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:03,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:03,263 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:03,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 758 places, 527 transitions, 9333 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:03,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:03,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:03,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:04,607 INFO L129 PetriNetUnfolder]: 612/2362 cut-off events. [2022-01-19 13:14:04,608 INFO L130 PetriNetUnfolder]: For 66628/66651 co-relation queries the response was YES. [2022-01-19 13:14:04,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18910 conditions, 2362 events. 612/2362 cut-off events. For 66628/66651 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 18238 event pairs, 219 based on Foata normal form. 5/2298 useless extension candidates. Maximal degree in co-relation 18570. Up to 541 conditions per place. [2022-01-19 13:14:04,670 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 291 selfloop transitions, 143 changer transitions 72/647 dead transitions. [2022-01-19 13:14:04,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 770 places, 647 transitions, 13275 flow [2022-01-19 13:14:04,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:14:04,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:14:04,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5926 transitions. [2022-01-19 13:14:04,672 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626769626769627 [2022-01-19 13:14:04,673 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5926 transitions. [2022-01-19 13:14:04,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5926 transitions. [2022-01-19 13:14:04,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:04,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5926 transitions. [2022-01-19 13:14:04,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.16216216216216) internal successors, (5926), 37 states have internal predecessors, (5926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:04,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:04,680 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:04,680 INFO L186 Difference]: Start difference. First operand has 758 places, 527 transitions, 9333 flow. Second operand 37 states and 5926 transitions. [2022-01-19 13:14:04,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 770 places, 647 transitions, 13275 flow [2022-01-19 13:14:05,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 751 places, 647 transitions, 12878 flow, removed 139 selfloop flow, removed 19 redundant places. [2022-01-19 13:14:05,249 INFO L242 Difference]: Finished difference. Result has 774 places, 530 transitions, 9590 flow [2022-01-19 13:14:05,249 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9083, PETRI_DIFFERENCE_MINUEND_PLACES=715, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9590, PETRI_PLACES=774, PETRI_TRANSITIONS=530} [2022-01-19 13:14:05,249 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 587 predicate places. [2022-01-19 13:14:05,249 INFO L470 AbstractCegarLoop]: Abstraction has has 774 places, 530 transitions, 9590 flow [2022-01-19 13:14:05,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:05,250 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:05,250 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:05,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2022-01-19 13:14:05,250 INFO L402 AbstractCegarLoop]: === Iteration 347 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:05,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:05,250 INFO L85 PathProgramCache]: Analyzing trace with hash 350111498, now seen corresponding path program 43 times [2022-01-19 13:14:05,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:05,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332682908] [2022-01-19 13:14:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:05,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:05,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:05,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332682908] [2022-01-19 13:14:05,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332682908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:05,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:05,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:05,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787991874] [2022-01-19 13:14:05,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:05,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:05,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:05,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:05,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:05,363 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:05,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 774 places, 530 transitions, 9590 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:05,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:05,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:05,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:06,592 INFO L129 PetriNetUnfolder]: 616/2376 cut-off events. [2022-01-19 13:14:06,592 INFO L130 PetriNetUnfolder]: For 67928/67951 co-relation queries the response was YES. [2022-01-19 13:14:06,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19155 conditions, 2376 events. 616/2376 cut-off events. For 67928/67951 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 18383 event pairs, 224 based on Foata normal form. 5/2312 useless extension candidates. Maximal degree in co-relation 18808. Up to 555 conditions per place. [2022-01-19 13:14:06,654 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 165 changer transitions 62/641 dead transitions. [2022-01-19 13:14:06,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 641 transitions, 13200 flow [2022-01-19 13:14:06,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:14:06,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:14:06,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-01-19 13:14:06,656 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-01-19 13:14:06,656 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-01-19 13:14:06,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-01-19 13:14:06,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:06,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-01-19 13:14:06,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:06,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:06,662 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:06,662 INFO L186 Difference]: Start difference. First operand has 774 places, 530 transitions, 9590 flow. Second operand 30 states and 4816 transitions. [2022-01-19 13:14:06,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 780 places, 641 transitions, 13200 flow [2022-01-19 13:14:07,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 753 places, 641 transitions, 12742 flow, removed 113 selfloop flow, removed 27 redundant places. [2022-01-19 13:14:07,259 INFO L242 Difference]: Finished difference. Result has 766 places, 543 transitions, 9979 flow [2022-01-19 13:14:07,260 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9225, PETRI_DIFFERENCE_MINUEND_PLACES=724, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9979, PETRI_PLACES=766, PETRI_TRANSITIONS=543} [2022-01-19 13:14:07,260 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 579 predicate places. [2022-01-19 13:14:07,260 INFO L470 AbstractCegarLoop]: Abstraction has has 766 places, 543 transitions, 9979 flow [2022-01-19 13:14:07,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:07,260 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:07,260 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:07,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2022-01-19 13:14:07,260 INFO L402 AbstractCegarLoop]: === Iteration 348 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:07,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:07,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1683532140, now seen corresponding path program 44 times [2022-01-19 13:14:07,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:07,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871920084] [2022-01-19 13:14:07,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:07,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:07,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:07,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871920084] [2022-01-19 13:14:07,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871920084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:07,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:07,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:07,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383505133] [2022-01-19 13:14:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:07,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:07,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:07,365 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:07,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 766 places, 543 transitions, 9979 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:07,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:07,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:07,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:08,589 INFO L129 PetriNetUnfolder]: 618/2403 cut-off events. [2022-01-19 13:14:08,589 INFO L130 PetriNetUnfolder]: For 66402/66425 co-relation queries the response was YES. [2022-01-19 13:14:08,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19241 conditions, 2403 events. 618/2403 cut-off events. For 66402/66425 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 18694 event pairs, 232 based on Foata normal form. 5/2338 useless extension candidates. Maximal degree in co-relation 18904. Up to 560 conditions per place. [2022-01-19 13:14:08,649 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 169 changer transitions 61/644 dead transitions. [2022-01-19 13:14:08,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 779 places, 644 transitions, 13386 flow [2022-01-19 13:14:08,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:14:08,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:14:08,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2022-01-19 13:14:08,652 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 13:14:08,652 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2022-01-19 13:14:08,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2022-01-19 13:14:08,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:08,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2022-01-19 13:14:08,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:08,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:08,657 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:08,657 INFO L186 Difference]: Start difference. First operand has 766 places, 543 transitions, 9979 flow. Second operand 29 states and 4662 transitions. [2022-01-19 13:14:08,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 779 places, 644 transitions, 13386 flow [2022-01-19 13:14:09,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 767 places, 644 transitions, 13054 flow, removed 70 selfloop flow, removed 12 redundant places. [2022-01-19 13:14:09,242 INFO L242 Difference]: Finished difference. Result has 780 places, 550 transitions, 10316 flow [2022-01-19 13:14:09,242 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9710, PETRI_DIFFERENCE_MINUEND_PLACES=739, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=10316, PETRI_PLACES=780, PETRI_TRANSITIONS=550} [2022-01-19 13:14:09,242 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 593 predicate places. [2022-01-19 13:14:09,243 INFO L470 AbstractCegarLoop]: Abstraction has has 780 places, 550 transitions, 10316 flow [2022-01-19 13:14:09,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:09,243 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:09,243 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:09,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2022-01-19 13:14:09,243 INFO L402 AbstractCegarLoop]: === Iteration 349 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:09,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:09,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2088876890, now seen corresponding path program 45 times [2022-01-19 13:14:09,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:09,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686142189] [2022-01-19 13:14:09,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:09,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:09,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:09,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686142189] [2022-01-19 13:14:09,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686142189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:09,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:09,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:09,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130950307] [2022-01-19 13:14:09,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:09,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:09,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:09,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:09,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:09,351 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:09,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 550 transitions, 10316 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:09,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:09,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:09,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:10,564 INFO L129 PetriNetUnfolder]: 611/2390 cut-off events. [2022-01-19 13:14:10,564 INFO L130 PetriNetUnfolder]: For 68306/68344 co-relation queries the response was YES. [2022-01-19 13:14:10,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19187 conditions, 2390 events. 611/2390 cut-off events. For 68306/68344 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 18533 event pairs, 210 based on Foata normal form. 9/2336 useless extension candidates. Maximal degree in co-relation 18845. Up to 559 conditions per place. [2022-01-19 13:14:10,627 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 297 selfloop transitions, 158 changer transitions 65/661 dead transitions. [2022-01-19 13:14:10,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 795 places, 661 transitions, 13933 flow [2022-01-19 13:14:10,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:14:10,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:14:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-01-19 13:14:10,630 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-01-19 13:14:10,630 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-01-19 13:14:10,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-01-19 13:14:10,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:10,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-01-19 13:14:10,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:10,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:10,635 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:10,636 INFO L186 Difference]: Start difference. First operand has 780 places, 550 transitions, 10316 flow. Second operand 30 states and 4816 transitions. [2022-01-19 13:14:10,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 795 places, 661 transitions, 13933 flow [2022-01-19 13:14:11,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 781 places, 661 transitions, 13560 flow, removed 77 selfloop flow, removed 14 redundant places. [2022-01-19 13:14:11,388 INFO L242 Difference]: Finished difference. Result has 794 places, 556 transitions, 10542 flow [2022-01-19 13:14:11,388 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10003, PETRI_DIFFERENCE_MINUEND_PLACES=752, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10542, PETRI_PLACES=794, PETRI_TRANSITIONS=556} [2022-01-19 13:14:11,389 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 607 predicate places. [2022-01-19 13:14:11,389 INFO L470 AbstractCegarLoop]: Abstraction has has 794 places, 556 transitions, 10542 flow [2022-01-19 13:14:11,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:11,389 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:11,389 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:11,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2022-01-19 13:14:11,389 INFO L402 AbstractCegarLoop]: === Iteration 350 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:11,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:11,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2068456834, now seen corresponding path program 46 times [2022-01-19 13:14:11,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:11,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109570758] [2022-01-19 13:14:11,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:11,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:11,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:11,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:11,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109570758] [2022-01-19 13:14:11,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109570758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:11,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:11,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:11,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626745914] [2022-01-19 13:14:11,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:11,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:11,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:11,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:11,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:11,526 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:11,527 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 794 places, 556 transitions, 10542 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:11,527 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:11,527 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:11,527 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:12,771 INFO L129 PetriNetUnfolder]: 603/2363 cut-off events. [2022-01-19 13:14:12,772 INFO L130 PetriNetUnfolder]: For 69987/70010 co-relation queries the response was YES. [2022-01-19 13:14:12,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19114 conditions, 2363 events. 603/2363 cut-off events. For 69987/70010 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 18326 event pairs, 211 based on Foata normal form. 5/2302 useless extension candidates. Maximal degree in co-relation 18768. Up to 556 conditions per place. [2022-01-19 13:14:12,833 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 310 selfloop transitions, 146 changer transitions 61/658 dead transitions. [2022-01-19 13:14:12,833 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 658 transitions, 14020 flow [2022-01-19 13:14:12,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:14:12,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:14:12,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4822 transitions. [2022-01-19 13:14:12,835 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653968253968254 [2022-01-19 13:14:12,835 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4822 transitions. [2022-01-19 13:14:12,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4822 transitions. [2022-01-19 13:14:12,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:12,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4822 transitions. [2022-01-19 13:14:12,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.73333333333332) internal successors, (4822), 30 states have internal predecessors, (4822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:12,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:12,841 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:12,841 INFO L186 Difference]: Start difference. First operand has 794 places, 556 transitions, 10542 flow. Second operand 30 states and 4822 transitions. [2022-01-19 13:14:12,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 808 places, 658 transitions, 14020 flow [2022-01-19 13:14:13,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 794 places, 658 transitions, 13700 flow, removed 93 selfloop flow, removed 14 redundant places. [2022-01-19 13:14:13,446 INFO L242 Difference]: Finished difference. Result has 808 places, 561 transitions, 10793 flow [2022-01-19 13:14:13,447 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10291, PETRI_DIFFERENCE_MINUEND_PLACES=765, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10793, PETRI_PLACES=808, PETRI_TRANSITIONS=561} [2022-01-19 13:14:13,447 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 621 predicate places. [2022-01-19 13:14:13,447 INFO L470 AbstractCegarLoop]: Abstraction has has 808 places, 561 transitions, 10793 flow [2022-01-19 13:14:13,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:13,447 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:13,447 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:13,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2022-01-19 13:14:13,448 INFO L402 AbstractCegarLoop]: === Iteration 351 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:13,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:13,448 INFO L85 PathProgramCache]: Analyzing trace with hash 261935310, now seen corresponding path program 47 times [2022-01-19 13:14:13,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:13,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071602229] [2022-01-19 13:14:13,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:13,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:13,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:13,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:13,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071602229] [2022-01-19 13:14:13,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071602229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:13,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:13,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:13,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254118561] [2022-01-19 13:14:13,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:13,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:13,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:13,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:13,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:13,577 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:13,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 561 transitions, 10793 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:13,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:13,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:13,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:14,823 INFO L129 PetriNetUnfolder]: 612/2394 cut-off events. [2022-01-19 13:14:14,823 INFO L130 PetriNetUnfolder]: For 72087/72125 co-relation queries the response was YES. [2022-01-19 13:14:14,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19511 conditions, 2394 events. 612/2394 cut-off events. For 72087/72125 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 18549 event pairs, 217 based on Foata normal form. 9/2337 useless extension candidates. Maximal degree in co-relation 19161. Up to 561 conditions per place. [2022-01-19 13:14:14,894 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 303 selfloop transitions, 164 changer transitions 61/669 dead transitions. [2022-01-19 13:14:14,894 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 821 places, 669 transitions, 14553 flow [2022-01-19 13:14:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:14:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:14:14,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2022-01-19 13:14:14,896 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 13:14:14,896 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2022-01-19 13:14:14,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2022-01-19 13:14:14,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:14,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2022-01-19 13:14:14,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:14,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:14,902 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:14,902 INFO L186 Difference]: Start difference. First operand has 808 places, 561 transitions, 10793 flow. Second operand 29 states and 4662 transitions. [2022-01-19 13:14:14,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 821 places, 669 transitions, 14553 flow [2022-01-19 13:14:15,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 807 places, 669 transitions, 14170 flow, removed 114 selfloop flow, removed 14 redundant places. [2022-01-19 13:14:15,543 INFO L242 Difference]: Finished difference. Result has 821 places, 573 transitions, 11276 flow [2022-01-19 13:14:15,544 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10507, PETRI_DIFFERENCE_MINUEND_PLACES=779, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11276, PETRI_PLACES=821, PETRI_TRANSITIONS=573} [2022-01-19 13:14:15,544 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 634 predicate places. [2022-01-19 13:14:15,544 INFO L470 AbstractCegarLoop]: Abstraction has has 821 places, 573 transitions, 11276 flow [2022-01-19 13:14:15,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:15,544 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:15,544 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:15,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2022-01-19 13:14:15,544 INFO L402 AbstractCegarLoop]: === Iteration 352 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:15,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:15,545 INFO L85 PathProgramCache]: Analyzing trace with hash 21764622, now seen corresponding path program 48 times [2022-01-19 13:14:15,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:15,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324844582] [2022-01-19 13:14:15,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:15,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:15,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:15,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324844582] [2022-01-19 13:14:15,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324844582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:15,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:15,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:15,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877628102] [2022-01-19 13:14:15,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:15,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:15,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:15,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:15,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:15,649 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:15,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 821 places, 573 transitions, 11276 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:15,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:15,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:15,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:16,934 INFO L129 PetriNetUnfolder]: 606/2382 cut-off events. [2022-01-19 13:14:16,934 INFO L130 PetriNetUnfolder]: For 73241/73264 co-relation queries the response was YES. [2022-01-19 13:14:16,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19471 conditions, 2382 events. 606/2382 cut-off events. For 73241/73264 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 18461 event pairs, 201 based on Foata normal form. 5/2324 useless extension candidates. Maximal degree in co-relation 19117. Up to 563 conditions per place. [2022-01-19 13:14:17,002 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 289 selfloop transitions, 186 changer transitions 64/680 dead transitions. [2022-01-19 13:14:17,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 836 places, 680 transitions, 15081 flow [2022-01-19 13:14:17,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:14:17,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:14:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4812 transitions. [2022-01-19 13:14:17,004 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638095238095238 [2022-01-19 13:14:17,004 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4812 transitions. [2022-01-19 13:14:17,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4812 transitions. [2022-01-19 13:14:17,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:17,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4812 transitions. [2022-01-19 13:14:17,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.4) internal successors, (4812), 30 states have internal predecessors, (4812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:17,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:17,010 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:17,010 INFO L186 Difference]: Start difference. First operand has 821 places, 573 transitions, 11276 flow. Second operand 30 states and 4812 transitions. [2022-01-19 13:14:17,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 836 places, 680 transitions, 15081 flow [2022-01-19 13:14:17,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 823 places, 680 transitions, 14757 flow, removed 72 selfloop flow, removed 13 redundant places. [2022-01-19 13:14:17,667 INFO L242 Difference]: Finished difference. Result has 836 places, 578 transitions, 11603 flow [2022-01-19 13:14:17,668 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10991, PETRI_DIFFERENCE_MINUEND_PLACES=794, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11603, PETRI_PLACES=836, PETRI_TRANSITIONS=578} [2022-01-19 13:14:17,668 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 649 predicate places. [2022-01-19 13:14:17,668 INFO L470 AbstractCegarLoop]: Abstraction has has 836 places, 578 transitions, 11603 flow [2022-01-19 13:14:17,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:17,668 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:17,669 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:17,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2022-01-19 13:14:17,669 INFO L402 AbstractCegarLoop]: === Iteration 353 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:17,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:17,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1752617230, now seen corresponding path program 49 times [2022-01-19 13:14:17,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:17,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627198091] [2022-01-19 13:14:17,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:17,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:17,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:17,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627198091] [2022-01-19 13:14:17,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627198091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:17,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:17,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:17,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416571162] [2022-01-19 13:14:17,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:17,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:17,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:17,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:17,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:17,788 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:17,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 836 places, 578 transitions, 11603 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:17,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:17,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:17,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:19,051 INFO L129 PetriNetUnfolder]: 607/2377 cut-off events. [2022-01-19 13:14:19,052 INFO L130 PetriNetUnfolder]: For 74030/74068 co-relation queries the response was YES. [2022-01-19 13:14:19,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19600 conditions, 2377 events. 607/2377 cut-off events. For 74030/74068 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 18426 event pairs, 210 based on Foata normal form. 9/2319 useless extension candidates. Maximal degree in co-relation 19241. Up to 563 conditions per place. [2022-01-19 13:14:19,120 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 321 selfloop transitions, 159 changer transitions 60/681 dead transitions. [2022-01-19 13:14:19,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 849 places, 681 transitions, 15323 flow [2022-01-19 13:14:19,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:14:19,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:14:19,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2022-01-19 13:14:19,122 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 13:14:19,123 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2022-01-19 13:14:19,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2022-01-19 13:14:19,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:19,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2022-01-19 13:14:19,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:19,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:19,129 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:19,129 INFO L186 Difference]: Start difference. First operand has 836 places, 578 transitions, 11603 flow. Second operand 29 states and 4662 transitions. [2022-01-19 13:14:19,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 849 places, 681 transitions, 15323 flow [2022-01-19 13:14:19,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 835 places, 681 transitions, 14944 flow, removed 74 selfloop flow, removed 14 redundant places. [2022-01-19 13:14:19,836 INFO L242 Difference]: Finished difference. Result has 848 places, 589 transitions, 11998 flow [2022-01-19 13:14:19,836 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11266, PETRI_DIFFERENCE_MINUEND_PLACES=807, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11998, PETRI_PLACES=848, PETRI_TRANSITIONS=589} [2022-01-19 13:14:19,837 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 661 predicate places. [2022-01-19 13:14:19,837 INFO L470 AbstractCegarLoop]: Abstraction has has 848 places, 589 transitions, 11998 flow [2022-01-19 13:14:19,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:19,837 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:19,837 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:19,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2022-01-19 13:14:19,837 INFO L402 AbstractCegarLoop]: === Iteration 354 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:19,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:19,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1449907186, now seen corresponding path program 50 times [2022-01-19 13:14:19,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:19,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18318915] [2022-01-19 13:14:19,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:19,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:19,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:19,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18318915] [2022-01-19 13:14:19,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18318915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:19,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:19,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:19,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178367306] [2022-01-19 13:14:19,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:19,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:19,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:19,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:19,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:19,950 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:19,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 848 places, 589 transitions, 11998 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:19,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:19,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:19,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:21,177 INFO L129 PetriNetUnfolder]: 590/2324 cut-off events. [2022-01-19 13:14:21,177 INFO L130 PetriNetUnfolder]: For 72954/72990 co-relation queries the response was YES. [2022-01-19 13:14:21,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19048 conditions, 2324 events. 590/2324 cut-off events. For 72954/72990 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17879 event pairs, 210 based on Foata normal form. 9/2266 useless extension candidates. Maximal degree in co-relation 18686. Up to 556 conditions per place. [2022-01-19 13:14:21,241 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 318 selfloop transitions, 140 changer transitions 66/665 dead transitions. [2022-01-19 13:14:21,241 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 863 places, 665 transitions, 14766 flow [2022-01-19 13:14:21,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:14:21,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:14:21,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4813 transitions. [2022-01-19 13:14:21,243 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763968253968254 [2022-01-19 13:14:21,243 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4813 transitions. [2022-01-19 13:14:21,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4813 transitions. [2022-01-19 13:14:21,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:21,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4813 transitions. [2022-01-19 13:14:21,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:21,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:21,249 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:21,249 INFO L186 Difference]: Start difference. First operand has 848 places, 589 transitions, 11998 flow. Second operand 30 states and 4813 transitions. [2022-01-19 13:14:21,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 863 places, 665 transitions, 14766 flow [2022-01-19 13:14:21,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 849 places, 665 transitions, 14369 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-01-19 13:14:21,953 INFO L242 Difference]: Finished difference. Result has 858 places, 567 transitions, 11264 flow [2022-01-19 13:14:21,953 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11631, PETRI_DIFFERENCE_MINUEND_PLACES=820, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11264, PETRI_PLACES=858, PETRI_TRANSITIONS=567} [2022-01-19 13:14:21,953 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 671 predicate places. [2022-01-19 13:14:21,953 INFO L470 AbstractCegarLoop]: Abstraction has has 858 places, 567 transitions, 11264 flow [2022-01-19 13:14:21,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:21,954 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:21,954 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:21,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2022-01-19 13:14:21,954 INFO L402 AbstractCegarLoop]: === Iteration 355 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:21,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:21,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1046518696, now seen corresponding path program 51 times [2022-01-19 13:14:21,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:21,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579214893] [2022-01-19 13:14:21,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:21,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:22,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:22,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579214893] [2022-01-19 13:14:22,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579214893] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:22,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:22,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:22,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573214650] [2022-01-19 13:14:22,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:22,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:22,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:22,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:22,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:22,060 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:22,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 567 transitions, 11264 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:22,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:22,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:22,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:23,353 INFO L129 PetriNetUnfolder]: 597/2351 cut-off events. [2022-01-19 13:14:23,354 INFO L130 PetriNetUnfolder]: For 73839/73877 co-relation queries the response was YES. [2022-01-19 13:14:23,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19277 conditions, 2351 events. 597/2351 cut-off events. For 73839/73877 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 18186 event pairs, 201 based on Foata normal form. 9/2295 useless extension candidates. Maximal degree in co-relation 18915. Up to 559 conditions per place. [2022-01-19 13:14:23,417 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 328 selfloop transitions, 146 changer transitions 60/675 dead transitions. [2022-01-19 13:14:23,417 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 675 transitions, 15121 flow [2022-01-19 13:14:23,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:14:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:14:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4822 transitions. [2022-01-19 13:14:23,419 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653968253968254 [2022-01-19 13:14:23,419 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4822 transitions. [2022-01-19 13:14:23,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4822 transitions. [2022-01-19 13:14:23,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:23,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4822 transitions. [2022-01-19 13:14:23,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.73333333333332) internal successors, (4822), 30 states have internal predecessors, (4822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:23,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:23,425 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:23,425 INFO L186 Difference]: Start difference. First operand has 858 places, 567 transitions, 11264 flow. Second operand 30 states and 4822 transitions. [2022-01-19 13:14:23,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 675 transitions, 15121 flow [2022-01-19 13:14:24,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 829 places, 675 transitions, 14564 flow, removed 45 selfloop flow, removed 31 redundant places. [2022-01-19 13:14:24,090 INFO L242 Difference]: Finished difference. Result has 842 places, 580 transitions, 11571 flow [2022-01-19 13:14:24,090 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10801, PETRI_DIFFERENCE_MINUEND_PLACES=800, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11571, PETRI_PLACES=842, PETRI_TRANSITIONS=580} [2022-01-19 13:14:24,091 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 655 predicate places. [2022-01-19 13:14:24,091 INFO L470 AbstractCegarLoop]: Abstraction has has 842 places, 580 transitions, 11571 flow [2022-01-19 13:14:24,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:24,091 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:24,091 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:24,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2022-01-19 13:14:24,091 INFO L402 AbstractCegarLoop]: === Iteration 356 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:24,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:24,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1306770478, now seen corresponding path program 52 times [2022-01-19 13:14:24,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:24,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407522460] [2022-01-19 13:14:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:24,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:24,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:24,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:24,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407522460] [2022-01-19 13:14:24,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407522460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:24,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:24,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:24,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945463400] [2022-01-19 13:14:24,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:24,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:24,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:24,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:24,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:24,224 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:24,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 842 places, 580 transitions, 11571 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:24,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:24,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:24,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:25,466 INFO L129 PetriNetUnfolder]: 591/2332 cut-off events. [2022-01-19 13:14:25,466 INFO L130 PetriNetUnfolder]: For 73750/73788 co-relation queries the response was YES. [2022-01-19 13:14:25,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19133 conditions, 2332 events. 591/2332 cut-off events. For 73750/73788 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 17962 event pairs, 201 based on Foata normal form. 9/2276 useless extension candidates. Maximal degree in co-relation 18777. Up to 557 conditions per place. [2022-01-19 13:14:25,528 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 331 selfloop transitions, 147 changer transitions 62/681 dead transitions. [2022-01-19 13:14:25,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 855 places, 681 transitions, 15229 flow [2022-01-19 13:14:25,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:14:25,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:14:25,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2022-01-19 13:14:25,531 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2022-01-19 13:14:25,531 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2022-01-19 13:14:25,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2022-01-19 13:14:25,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:25,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2022-01-19 13:14:25,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:25,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:25,537 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:25,537 INFO L186 Difference]: Start difference. First operand has 842 places, 580 transitions, 11571 flow. Second operand 29 states and 4664 transitions. [2022-01-19 13:14:25,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 855 places, 681 transitions, 15229 flow [2022-01-19 13:14:26,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 843 places, 681 transitions, 14882 flow, removed 96 selfloop flow, removed 12 redundant places. [2022-01-19 13:14:26,233 INFO L242 Difference]: Finished difference. Result has 857 places, 584 transitions, 11783 flow [2022-01-19 13:14:26,234 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11301, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11783, PETRI_PLACES=857, PETRI_TRANSITIONS=584} [2022-01-19 13:14:26,234 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 670 predicate places. [2022-01-19 13:14:26,234 INFO L470 AbstractCegarLoop]: Abstraction has has 857 places, 584 transitions, 11783 flow [2022-01-19 13:14:26,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:26,234 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:26,234 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:26,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2022-01-19 13:14:26,234 INFO L402 AbstractCegarLoop]: === Iteration 357 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:26,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:26,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1866181866, now seen corresponding path program 53 times [2022-01-19 13:14:26,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:26,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939935659] [2022-01-19 13:14:26,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:26,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:26,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:26,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939935659] [2022-01-19 13:14:26,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939935659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:26,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:26,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:26,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408619690] [2022-01-19 13:14:26,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:26,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:26,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:26,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:26,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:26,340 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:26,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 857 places, 584 transitions, 11783 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:26,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:26,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:26,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:27,570 INFO L129 PetriNetUnfolder]: 590/2337 cut-off events. [2022-01-19 13:14:27,570 INFO L130 PetriNetUnfolder]: For 74148/74186 co-relation queries the response was YES. [2022-01-19 13:14:27,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19237 conditions, 2337 events. 590/2337 cut-off events. For 74148/74186 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 18021 event pairs, 202 based on Foata normal form. 9/2282 useless extension candidates. Maximal degree in co-relation 18875. Up to 559 conditions per place. [2022-01-19 13:14:27,633 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 328 selfloop transitions, 154 changer transitions 63/686 dead transitions. [2022-01-19 13:14:27,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 870 places, 686 transitions, 15561 flow [2022-01-19 13:14:27,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:14:27,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:14:27,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4503 transitions. [2022-01-19 13:14:27,636 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658163265306123 [2022-01-19 13:14:27,636 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4503 transitions. [2022-01-19 13:14:27,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4503 transitions. [2022-01-19 13:14:27,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:27,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4503 transitions. [2022-01-19 13:14:27,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.82142857142858) internal successors, (4503), 28 states have internal predecessors, (4503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:27,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:27,641 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:27,641 INFO L186 Difference]: Start difference. First operand has 857 places, 584 transitions, 11783 flow. Second operand 28 states and 4503 transitions. [2022-01-19 13:14:27,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 870 places, 686 transitions, 15561 flow [2022-01-19 13:14:28,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 856 places, 686 transitions, 15185 flow, removed 92 selfloop flow, removed 14 redundant places. [2022-01-19 13:14:28,390 INFO L242 Difference]: Finished difference. Result has 868 places, 592 transitions, 12084 flow [2022-01-19 13:14:28,390 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11481, PETRI_DIFFERENCE_MINUEND_PLACES=829, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=12084, PETRI_PLACES=868, PETRI_TRANSITIONS=592} [2022-01-19 13:14:28,390 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 681 predicate places. [2022-01-19 13:14:28,390 INFO L470 AbstractCegarLoop]: Abstraction has has 868 places, 592 transitions, 12084 flow [2022-01-19 13:14:28,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:28,391 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:28,391 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:28,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2022-01-19 13:14:28,391 INFO L402 AbstractCegarLoop]: === Iteration 358 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:28,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:28,391 INFO L85 PathProgramCache]: Analyzing trace with hash 219871220, now seen corresponding path program 54 times [2022-01-19 13:14:28,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:28,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233879515] [2022-01-19 13:14:28,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:28,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:28,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:28,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233879515] [2022-01-19 13:14:28,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233879515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:28,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:28,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:28,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770108525] [2022-01-19 13:14:28,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:28,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:28,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:28,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:28,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:28,496 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:28,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 868 places, 592 transitions, 12084 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:28,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:28,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:28,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:29,729 INFO L129 PetriNetUnfolder]: 565/2268 cut-off events. [2022-01-19 13:14:29,729 INFO L130 PetriNetUnfolder]: For 70636/70674 co-relation queries the response was YES. [2022-01-19 13:14:29,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18412 conditions, 2268 events. 565/2268 cut-off events. For 70636/70674 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 17348 event pairs, 193 based on Foata normal form. 9/2214 useless extension candidates. Maximal degree in co-relation 18047. Up to 546 conditions per place. [2022-01-19 13:14:29,792 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 321 selfloop transitions, 131 changer transitions 69/662 dead transitions. [2022-01-19 13:14:29,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 884 places, 662 transitions, 14706 flow [2022-01-19 13:14:29,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:14:29,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:14:29,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-01-19 13:14:29,794 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-01-19 13:14:29,794 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-01-19 13:14:29,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-01-19 13:14:29,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:29,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-01-19 13:14:29,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:29,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:29,800 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:29,800 INFO L186 Difference]: Start difference. First operand has 868 places, 592 transitions, 12084 flow. Second operand 30 states and 4809 transitions. [2022-01-19 13:14:29,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 884 places, 662 transitions, 14706 flow [2022-01-19 13:14:30,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 869 places, 662 transitions, 14293 flow, removed 63 selfloop flow, removed 15 redundant places. [2022-01-19 13:14:30,483 INFO L242 Difference]: Finished difference. Result has 878 places, 562 transitions, 11060 flow [2022-01-19 13:14:30,483 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11699, PETRI_DIFFERENCE_MINUEND_PLACES=840, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11060, PETRI_PLACES=878, PETRI_TRANSITIONS=562} [2022-01-19 13:14:30,483 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 691 predicate places. [2022-01-19 13:14:30,483 INFO L470 AbstractCegarLoop]: Abstraction has has 878 places, 562 transitions, 11060 flow [2022-01-19 13:14:30,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:30,484 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:30,484 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:30,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2022-01-19 13:14:30,484 INFO L402 AbstractCegarLoop]: === Iteration 359 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:30,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:30,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1696012714, now seen corresponding path program 55 times [2022-01-19 13:14:30,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:30,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019854749] [2022-01-19 13:14:30,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:30,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:30,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:30,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:30,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019854749] [2022-01-19 13:14:30,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019854749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:30,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:30,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:30,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914871708] [2022-01-19 13:14:30,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:30,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:30,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:30,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:30,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:30,589 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:30,590 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 878 places, 562 transitions, 11060 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:30,590 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:30,590 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:30,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:31,765 INFO L129 PetriNetUnfolder]: 541/2203 cut-off events. [2022-01-19 13:14:31,765 INFO L130 PetriNetUnfolder]: For 68870/68893 co-relation queries the response was YES. [2022-01-19 13:14:31,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17514 conditions, 2203 events. 541/2203 cut-off events. For 68870/68893 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 16647 event pairs, 185 based on Foata normal form. 5/2146 useless extension candidates. Maximal degree in co-relation 17149. Up to 540 conditions per place. [2022-01-19 13:14:31,826 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 152 changer transitions 66/627 dead transitions. [2022-01-19 13:14:31,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 870 places, 627 transitions, 13488 flow [2022-01-19 13:14:31,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:14:31,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:14:31,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4492 transitions. [2022-01-19 13:14:31,828 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7639455782312925 [2022-01-19 13:14:31,828 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4492 transitions. [2022-01-19 13:14:31,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4492 transitions. [2022-01-19 13:14:31,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:31,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4492 transitions. [2022-01-19 13:14:31,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.42857142857142) internal successors, (4492), 28 states have internal predecessors, (4492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:31,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:31,834 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:31,834 INFO L186 Difference]: Start difference. First operand has 878 places, 562 transitions, 11060 flow. Second operand 28 states and 4492 transitions. [2022-01-19 13:14:31,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 870 places, 627 transitions, 13488 flow [2022-01-19 13:14:32,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 836 places, 627 transitions, 12862 flow, removed 40 selfloop flow, removed 34 redundant places. [2022-01-19 13:14:32,469 INFO L242 Difference]: Finished difference. Result has 843 places, 530 transitions, 9853 flow [2022-01-19 13:14:32,470 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10498, PETRI_DIFFERENCE_MINUEND_PLACES=809, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=9853, PETRI_PLACES=843, PETRI_TRANSITIONS=530} [2022-01-19 13:14:32,470 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 656 predicate places. [2022-01-19 13:14:32,470 INFO L470 AbstractCegarLoop]: Abstraction has has 843 places, 530 transitions, 9853 flow [2022-01-19 13:14:32,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:32,470 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:32,470 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:32,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2022-01-19 13:14:32,470 INFO L402 AbstractCegarLoop]: === Iteration 360 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:32,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:32,471 INFO L85 PathProgramCache]: Analyzing trace with hash -361020288, now seen corresponding path program 56 times [2022-01-19 13:14:32,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:32,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140189439] [2022-01-19 13:14:32,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:32,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:32,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:32,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:32,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140189439] [2022-01-19 13:14:32,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140189439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:32,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:32,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:32,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416707087] [2022-01-19 13:14:32,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:32,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:32,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:32,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:32,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:32,580 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:32,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 843 places, 530 transitions, 9853 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:32,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:32,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:32,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:33,688 INFO L129 PetriNetUnfolder]: 521/2132 cut-off events. [2022-01-19 13:14:33,689 INFO L130 PetriNetUnfolder]: For 61621/61659 co-relation queries the response was YES. [2022-01-19 13:14:33,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16553 conditions, 2132 events. 521/2132 cut-off events. For 61621/61659 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 15908 event pairs, 186 based on Foata normal form. 9/2078 useless extension candidates. Maximal degree in co-relation 16202. Up to 529 conditions per place. [2022-01-19 13:14:33,744 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 294 selfloop transitions, 102 changer transitions 63/600 dead transitions. [2022-01-19 13:14:33,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 837 places, 600 transitions, 12387 flow [2022-01-19 13:14:33,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 13:14:33,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 13:14:33,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4495 transitions. [2022-01-19 13:14:33,747 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644557823129252 [2022-01-19 13:14:33,747 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4495 transitions. [2022-01-19 13:14:33,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4495 transitions. [2022-01-19 13:14:33,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:33,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4495 transitions. [2022-01-19 13:14:33,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.53571428571428) internal successors, (4495), 28 states have internal predecessors, (4495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:33,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:33,752 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:33,752 INFO L186 Difference]: Start difference. First operand has 843 places, 530 transitions, 9853 flow. Second operand 28 states and 4495 transitions. [2022-01-19 13:14:33,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 837 places, 600 transitions, 12387 flow [2022-01-19 13:14:34,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 796 places, 600 transitions, 11507 flow, removed 44 selfloop flow, removed 41 redundant places. [2022-01-19 13:14:34,319 INFO L242 Difference]: Finished difference. Result has 805 places, 505 transitions, 8652 flow [2022-01-19 13:14:34,319 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9064, PETRI_DIFFERENCE_MINUEND_PLACES=769, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8652, PETRI_PLACES=805, PETRI_TRANSITIONS=505} [2022-01-19 13:14:34,319 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 618 predicate places. [2022-01-19 13:14:34,319 INFO L470 AbstractCegarLoop]: Abstraction has has 805 places, 505 transitions, 8652 flow [2022-01-19 13:14:34,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:34,320 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:34,320 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:34,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2022-01-19 13:14:34,320 INFO L402 AbstractCegarLoop]: === Iteration 361 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:34,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:34,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1924282002, now seen corresponding path program 57 times [2022-01-19 13:14:34,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:34,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078345165] [2022-01-19 13:14:34,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:34,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:34,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:34,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:34,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078345165] [2022-01-19 13:14:34,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078345165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:34,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:34,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:34,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677888355] [2022-01-19 13:14:34,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:34,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:34,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:34,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:34,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:34,438 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:34,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 805 places, 505 transitions, 8652 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:34,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:34,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:34,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:35,474 INFO L129 PetriNetUnfolder]: 495/2050 cut-off events. [2022-01-19 13:14:35,474 INFO L130 PetriNetUnfolder]: For 55364/55387 co-relation queries the response was YES. [2022-01-19 13:14:35,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15421 conditions, 2050 events. 495/2050 cut-off events. For 55364/55387 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 15087 event pairs, 177 based on Foata normal form. 5/1995 useless extension candidates. Maximal degree in co-relation 15085. Up to 514 conditions per place. [2022-01-19 13:14:35,527 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 261 selfloop transitions, 97 changer transitions 67/566 dead transitions. [2022-01-19 13:14:35,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 798 places, 566 transitions, 10802 flow [2022-01-19 13:14:35,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 13:14:35,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 13:14:35,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4330 transitions. [2022-01-19 13:14:35,530 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763668430335097 [2022-01-19 13:14:35,530 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4330 transitions. [2022-01-19 13:14:35,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4330 transitions. [2022-01-19 13:14:35,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:35,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4330 transitions. [2022-01-19 13:14:35,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.37037037037038) internal successors, (4330), 27 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:35,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:35,535 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:35,535 INFO L186 Difference]: Start difference. First operand has 805 places, 505 transitions, 8652 flow. Second operand 27 states and 4330 transitions. [2022-01-19 13:14:35,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 798 places, 566 transitions, 10802 flow [2022-01-19 13:14:35,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 766 places, 566 transitions, 10251 flow, removed 32 selfloop flow, removed 32 redundant places. [2022-01-19 13:14:35,986 INFO L242 Difference]: Finished difference. Result has 773 places, 468 transitions, 7462 flow [2022-01-19 13:14:35,986 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8161, PETRI_DIFFERENCE_MINUEND_PLACES=740, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7462, PETRI_PLACES=773, PETRI_TRANSITIONS=468} [2022-01-19 13:14:35,986 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 586 predicate places. [2022-01-19 13:14:35,986 INFO L470 AbstractCegarLoop]: Abstraction has has 773 places, 468 transitions, 7462 flow [2022-01-19 13:14:35,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:35,987 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:35,987 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:35,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2022-01-19 13:14:35,987 INFO L402 AbstractCegarLoop]: === Iteration 362 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:35,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:35,987 INFO L85 PathProgramCache]: Analyzing trace with hash 433843228, now seen corresponding path program 58 times [2022-01-19 13:14:35,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:35,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006118038] [2022-01-19 13:14:35,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:35,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:36,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:36,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:36,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006118038] [2022-01-19 13:14:36,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006118038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:36,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:36,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:36,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108993863] [2022-01-19 13:14:36,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:36,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:36,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:36,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:36,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:36,093 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:36,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 468 transitions, 7462 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:36,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:36,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:36,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:37,120 INFO L129 PetriNetUnfolder]: 487/2031 cut-off events. [2022-01-19 13:14:37,120 INFO L130 PetriNetUnfolder]: For 51450/51473 co-relation queries the response was YES. [2022-01-19 13:14:37,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14989 conditions, 2031 events. 487/2031 cut-off events. For 51450/51473 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 14900 event pairs, 183 based on Foata normal form. 5/1977 useless extension candidates. Maximal degree in co-relation 14663. Up to 509 conditions per place. [2022-01-19 13:14:37,170 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 249 selfloop transitions, 96 changer transitions 63/549 dead transitions. [2022-01-19 13:14:37,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 761 places, 549 transitions, 10088 flow [2022-01-19 13:14:37,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:14:37,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:14:37,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4649 transitions. [2022-01-19 13:14:37,172 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633825944170771 [2022-01-19 13:14:37,172 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4649 transitions. [2022-01-19 13:14:37,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4649 transitions. [2022-01-19 13:14:37,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:37,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4649 transitions. [2022-01-19 13:14:37,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.31034482758622) internal successors, (4649), 29 states have internal predecessors, (4649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:37,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:37,178 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:37,178 INFO L186 Difference]: Start difference. First operand has 773 places, 468 transitions, 7462 flow. Second operand 29 states and 4649 transitions. [2022-01-19 13:14:37,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 761 places, 549 transitions, 10088 flow [2022-01-19 13:14:37,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 725 places, 549 transitions, 9301 flow, removed 32 selfloop flow, removed 36 redundant places. [2022-01-19 13:14:37,578 INFO L242 Difference]: Finished difference. Result has 736 places, 455 transitions, 6740 flow [2022-01-19 13:14:37,578 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6817, PETRI_DIFFERENCE_MINUEND_PLACES=697, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6740, PETRI_PLACES=736, PETRI_TRANSITIONS=455} [2022-01-19 13:14:37,578 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 549 predicate places. [2022-01-19 13:14:37,578 INFO L470 AbstractCegarLoop]: Abstraction has has 736 places, 455 transitions, 6740 flow [2022-01-19 13:14:37,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:37,578 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:37,578 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:37,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2022-01-19 13:14:37,579 INFO L402 AbstractCegarLoop]: === Iteration 363 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:37,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:37,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1437060252, now seen corresponding path program 59 times [2022-01-19 13:14:37,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:37,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369146121] [2022-01-19 13:14:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:37,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:37,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:37,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369146121] [2022-01-19 13:14:37,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369146121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:37,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:37,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:37,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210445286] [2022-01-19 13:14:37,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:37,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:37,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:37,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:37,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:37,695 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:37,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 736 places, 455 transitions, 6740 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:37,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:37,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:37,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:38,737 INFO L129 PetriNetUnfolder]: 477/2004 cut-off events. [2022-01-19 13:14:38,737 INFO L130 PetriNetUnfolder]: For 46345/46368 co-relation queries the response was YES. [2022-01-19 13:14:38,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14295 conditions, 2004 events. 477/2004 cut-off events. For 46345/46368 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 14691 event pairs, 178 based on Foata normal form. 5/1949 useless extension candidates. Maximal degree in co-relation 13977. Up to 504 conditions per place. [2022-01-19 13:14:38,780 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 243 selfloop transitions, 89 changer transitions 62/535 dead transitions. [2022-01-19 13:14:38,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 535 transitions, 9239 flow [2022-01-19 13:14:38,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:14:38,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:14:38,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4810 transitions. [2022-01-19 13:14:38,782 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634920634920634 [2022-01-19 13:14:38,783 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4810 transitions. [2022-01-19 13:14:38,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4810 transitions. [2022-01-19 13:14:38,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:38,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4810 transitions. [2022-01-19 13:14:38,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.33333333333334) internal successors, (4810), 30 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:38,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:38,788 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:38,788 INFO L186 Difference]: Start difference. First operand has 736 places, 455 transitions, 6740 flow. Second operand 30 states and 4810 transitions. [2022-01-19 13:14:38,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 535 transitions, 9239 flow [2022-01-19 13:14:39,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 710 places, 535 transitions, 8846 flow, removed 27 selfloop flow, removed 29 redundant places. [2022-01-19 13:14:39,139 INFO L242 Difference]: Finished difference. Result has 722 places, 442 transitions, 6348 flow [2022-01-19 13:14:39,139 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6422, PETRI_DIFFERENCE_MINUEND_PLACES=681, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6348, PETRI_PLACES=722, PETRI_TRANSITIONS=442} [2022-01-19 13:14:39,140 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 535 predicate places. [2022-01-19 13:14:39,140 INFO L470 AbstractCegarLoop]: Abstraction has has 722 places, 442 transitions, 6348 flow [2022-01-19 13:14:39,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:39,140 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:39,140 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:39,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2022-01-19 13:14:39,140 INFO L402 AbstractCegarLoop]: === Iteration 364 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:39,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:39,140 INFO L85 PathProgramCache]: Analyzing trace with hash 704632400, now seen corresponding path program 60 times [2022-01-19 13:14:39,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:39,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706263742] [2022-01-19 13:14:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:39,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:39,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:39,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706263742] [2022-01-19 13:14:39,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706263742] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:39,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:39,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:39,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198888006] [2022-01-19 13:14:39,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:39,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:39,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:39,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:39,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:39,247 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:39,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 722 places, 442 transitions, 6348 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:39,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:39,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:39,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:40,202 INFO L129 PetriNetUnfolder]: 449/1893 cut-off events. [2022-01-19 13:14:40,202 INFO L130 PetriNetUnfolder]: For 42491/42529 co-relation queries the response was YES. [2022-01-19 13:14:40,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13367 conditions, 1893 events. 449/1893 cut-off events. For 42491/42529 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 13571 event pairs, 175 based on Foata normal form. 9/1843 useless extension candidates. Maximal degree in co-relation 13053. Up to 489 conditions per place. [2022-01-19 13:14:40,248 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 227 selfloop transitions, 61 changer transitions 66/495 dead transitions. [2022-01-19 13:14:40,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 495 transitions, 8082 flow [2022-01-19 13:14:40,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:14:40,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:14:40,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4793 transitions. [2022-01-19 13:14:40,250 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7607936507936508 [2022-01-19 13:14:40,250 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4793 transitions. [2022-01-19 13:14:40,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4793 transitions. [2022-01-19 13:14:40,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:40,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4793 transitions. [2022-01-19 13:14:40,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.76666666666668) internal successors, (4793), 30 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:40,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:40,257 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:40,257 INFO L186 Difference]: Start difference. First operand has 722 places, 442 transitions, 6348 flow. Second operand 30 states and 4793 transitions. [2022-01-19 13:14:40,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 495 transitions, 8082 flow [2022-01-19 13:14:40,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 495 transitions, 7740 flow, removed 28 selfloop flow, removed 30 redundant places. [2022-01-19 13:14:40,573 INFO L242 Difference]: Finished difference. Result has 701 places, 398 transitions, 5225 flow [2022-01-19 13:14:40,574 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6038, PETRI_DIFFERENCE_MINUEND_PLACES=665, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5225, PETRI_PLACES=701, PETRI_TRANSITIONS=398} [2022-01-19 13:14:40,574 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 514 predicate places. [2022-01-19 13:14:40,574 INFO L470 AbstractCegarLoop]: Abstraction has has 701 places, 398 transitions, 5225 flow [2022-01-19 13:14:40,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:40,574 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:40,574 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:40,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2022-01-19 13:14:40,574 INFO L402 AbstractCegarLoop]: === Iteration 365 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1213269254, now seen corresponding path program 61 times [2022-01-19 13:14:40,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:40,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010558090] [2022-01-19 13:14:40,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:40,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:40,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:40,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010558090] [2022-01-19 13:14:40,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010558090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:40,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:40,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:40,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444189034] [2022-01-19 13:14:40,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:40,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:40,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:40,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:40,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:40,680 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:40,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 701 places, 398 transitions, 5225 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:40,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:40,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:40,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:41,555 INFO L129 PetriNetUnfolder]: 425/1794 cut-off events. [2022-01-19 13:14:41,555 INFO L130 PetriNetUnfolder]: For 38764/38802 co-relation queries the response was YES. [2022-01-19 13:14:41,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12472 conditions, 1794 events. 425/1794 cut-off events. For 38764/38802 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 12551 event pairs, 176 based on Foata normal form. 9/1745 useless extension candidates. Maximal degree in co-relation 12170. Up to 478 conditions per place. [2022-01-19 13:14:41,595 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 199 selfloop transitions, 53 changer transitions 64/457 dead transitions. [2022-01-19 13:14:41,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 457 transitions, 7004 flow [2022-01-19 13:14:41,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 13:14:41,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 13:14:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4637 transitions. [2022-01-19 13:14:41,597 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7614121510673235 [2022-01-19 13:14:41,597 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4637 transitions. [2022-01-19 13:14:41,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4637 transitions. [2022-01-19 13:14:41,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:41,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4637 transitions. [2022-01-19 13:14:41,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.89655172413794) internal successors, (4637), 29 states have internal predecessors, (4637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:41,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:41,603 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:41,603 INFO L186 Difference]: Start difference. First operand has 701 places, 398 transitions, 5225 flow. Second operand 29 states and 4637 transitions. [2022-01-19 13:14:41,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 457 transitions, 7004 flow [2022-01-19 13:14:41,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 457 transitions, 6515 flow, removed 35 selfloop flow, removed 33 redundant places. [2022-01-19 13:14:41,860 INFO L242 Difference]: Finished difference. Result has 654 places, 362 transitions, 4206 flow [2022-01-19 13:14:41,861 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4815, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=4206, PETRI_PLACES=654, PETRI_TRANSITIONS=362} [2022-01-19 13:14:41,861 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 467 predicate places. [2022-01-19 13:14:41,861 INFO L470 AbstractCegarLoop]: Abstraction has has 654 places, 362 transitions, 4206 flow [2022-01-19 13:14:41,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:41,861 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:41,861 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:41,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2022-01-19 13:14:41,862 INFO L402 AbstractCegarLoop]: === Iteration 366 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:41,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:41,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1115766212, now seen corresponding path program 62 times [2022-01-19 13:14:41,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:41,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236158525] [2022-01-19 13:14:41,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:41,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:41,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:41,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:41,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236158525] [2022-01-19 13:14:41,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236158525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:41,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:41,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:41,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675087754] [2022-01-19 13:14:41,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:41,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:41,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:41,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:41,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:41,971 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:41,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 362 transitions, 4206 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:41,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:41,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:41,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:42,789 INFO L129 PetriNetUnfolder]: 391/1663 cut-off events. [2022-01-19 13:14:42,789 INFO L130 PetriNetUnfolder]: For 32999/33022 co-relation queries the response was YES. [2022-01-19 13:14:42,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11210 conditions, 1663 events. 391/1663 cut-off events. For 32999/33022 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11344 event pairs, 165 based on Foata normal form. 5/1611 useless extension candidates. Maximal degree in co-relation 10918. Up to 457 conditions per place. [2022-01-19 13:14:42,825 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 168 selfloop transitions, 30 changer transitions 68/407 dead transitions. [2022-01-19 13:14:42,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 407 transitions, 5559 flow [2022-01-19 13:14:42,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:14:42,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:14:42,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4775 transitions. [2022-01-19 13:14:42,827 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7579365079365079 [2022-01-19 13:14:42,827 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4775 transitions. [2022-01-19 13:14:42,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4775 transitions. [2022-01-19 13:14:42,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:42,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4775 transitions. [2022-01-19 13:14:42,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.16666666666666) internal successors, (4775), 30 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:42,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:42,833 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:42,833 INFO L186 Difference]: Start difference. First operand has 654 places, 362 transitions, 4206 flow. Second operand 30 states and 4775 transitions. [2022-01-19 13:14:42,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 407 transitions, 5559 flow [2022-01-19 13:14:43,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 407 transitions, 5247 flow, removed 28 selfloop flow, removed 32 redundant places. [2022-01-19 13:14:43,032 INFO L242 Difference]: Finished difference. Result has 612 places, 309 transitions, 3014 flow [2022-01-19 13:14:43,032 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3918, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3014, PETRI_PLACES=612, PETRI_TRANSITIONS=309} [2022-01-19 13:14:43,032 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 425 predicate places. [2022-01-19 13:14:43,033 INFO L470 AbstractCegarLoop]: Abstraction has has 612 places, 309 transitions, 3014 flow [2022-01-19 13:14:43,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:43,033 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:43,033 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:43,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2022-01-19 13:14:43,033 INFO L402 AbstractCegarLoop]: === Iteration 367 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:43,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:43,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1731795466, now seen corresponding path program 63 times [2022-01-19 13:14:43,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:43,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446201136] [2022-01-19 13:14:43,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:43,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:43,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:43,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446201136] [2022-01-19 13:14:43,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446201136] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:43,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:43,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:43,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777523088] [2022-01-19 13:14:43,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:43,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:43,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:43,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:43,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:43,143 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:43,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 309 transitions, 3014 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:43,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:43,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:43,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:44,282 INFO L129 PetriNetUnfolder]: 430/1772 cut-off events. [2022-01-19 13:14:44,282 INFO L130 PetriNetUnfolder]: For 36265/36290 co-relation queries the response was YES. [2022-01-19 13:14:44,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12294 conditions, 1772 events. 430/1772 cut-off events. For 36265/36290 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12245 event pairs, 212 based on Foata normal form. 3/1718 useless extension candidates. Maximal degree in co-relation 12015. Up to 460 conditions per place. [2022-01-19 13:14:44,320 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 190 selfloop transitions, 51 changer transitions 74/456 dead transitions. [2022-01-19 13:14:44,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 456 transitions, 6942 flow [2022-01-19 13:14:44,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 13:14:44,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 13:14:44,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7335 transitions. [2022-01-19 13:14:44,323 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593167701863354 [2022-01-19 13:14:44,323 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7335 transitions. [2022-01-19 13:14:44,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7335 transitions. [2022-01-19 13:14:44,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:44,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7335 transitions. [2022-01-19 13:14:44,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.45652173913044) internal successors, (7335), 46 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:44,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:44,332 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:44,332 INFO L186 Difference]: Start difference. First operand has 612 places, 309 transitions, 3014 flow. Second operand 46 states and 7335 transitions. [2022-01-19 13:14:44,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 456 transitions, 6942 flow [2022-01-19 13:14:44,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 456 transitions, 6321 flow, removed 92 selfloop flow, removed 35 redundant places. [2022-01-19 13:14:44,518 INFO L242 Difference]: Finished difference. Result has 584 places, 329 transitions, 3411 flow [2022-01-19 13:14:44,519 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2742, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3411, PETRI_PLACES=584, PETRI_TRANSITIONS=329} [2022-01-19 13:14:44,519 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 397 predicate places. [2022-01-19 13:14:44,519 INFO L470 AbstractCegarLoop]: Abstraction has has 584 places, 329 transitions, 3411 flow [2022-01-19 13:14:44,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:44,519 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:44,519 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:44,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2022-01-19 13:14:44,519 INFO L402 AbstractCegarLoop]: === Iteration 368 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:44,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:44,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1184965612, now seen corresponding path program 64 times [2022-01-19 13:14:44,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:44,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036005411] [2022-01-19 13:14:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:44,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:44,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:44,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036005411] [2022-01-19 13:14:44,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036005411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:44,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:44,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:44,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507673752] [2022-01-19 13:14:44,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:44,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:44,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:44,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:44,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:44,638 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:44,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 329 transitions, 3411 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:44,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:44,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:44,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:45,797 INFO L129 PetriNetUnfolder]: 474/1904 cut-off events. [2022-01-19 13:14:45,797 INFO L130 PetriNetUnfolder]: For 41680/41690 co-relation queries the response was YES. [2022-01-19 13:14:45,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13573 conditions, 1904 events. 474/1904 cut-off events. For 41680/41690 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 13378 event pairs, 252 based on Foata normal form. 1/1846 useless extension candidates. Maximal degree in co-relation 13289. Up to 459 conditions per place. [2022-01-19 13:14:45,838 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 194 selfloop transitions, 65 changer transitions 74/474 dead transitions. [2022-01-19 13:14:45,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 474 transitions, 7558 flow [2022-01-19 13:14:45,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 13:14:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 13:14:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6865 transitions. [2022-01-19 13:14:45,841 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602436323366556 [2022-01-19 13:14:45,841 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6865 transitions. [2022-01-19 13:14:45,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6865 transitions. [2022-01-19 13:14:45,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:45,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6865 transitions. [2022-01-19 13:14:45,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.65116279069767) internal successors, (6865), 43 states have internal predecessors, (6865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:45,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:45,850 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:45,850 INFO L186 Difference]: Start difference. First operand has 584 places, 329 transitions, 3411 flow. Second operand 43 states and 6865 transitions. [2022-01-19 13:14:45,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 474 transitions, 7558 flow [2022-01-19 13:14:46,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 474 transitions, 6769 flow, removed 382 selfloop flow, removed 25 redundant places. [2022-01-19 13:14:46,070 INFO L242 Difference]: Finished difference. Result has 604 places, 350 transitions, 3883 flow [2022-01-19 13:14:46,070 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3165, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=3883, PETRI_PLACES=604, PETRI_TRANSITIONS=350} [2022-01-19 13:14:46,070 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 417 predicate places. [2022-01-19 13:14:46,070 INFO L470 AbstractCegarLoop]: Abstraction has has 604 places, 350 transitions, 3883 flow [2022-01-19 13:14:46,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:46,071 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:46,071 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:46,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2022-01-19 13:14:46,071 INFO L402 AbstractCegarLoop]: === Iteration 369 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:46,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:46,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1833710810, now seen corresponding path program 65 times [2022-01-19 13:14:46,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:46,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557900042] [2022-01-19 13:14:46,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:46,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:46,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:46,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:46,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557900042] [2022-01-19 13:14:46,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557900042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:46,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:46,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:46,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703793418] [2022-01-19 13:14:46,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:46,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:46,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:46,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:46,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:46,181 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:46,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 350 transitions, 3883 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:46,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:46,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:46,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:47,369 INFO L129 PetriNetUnfolder]: 512/1978 cut-off events. [2022-01-19 13:14:47,369 INFO L130 PetriNetUnfolder]: For 50741/50774 co-relation queries the response was YES. [2022-01-19 13:14:47,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15031 conditions, 1978 events. 512/1978 cut-off events. For 50741/50774 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 14040 event pairs, 235 based on Foata normal form. 3/1919 useless extension candidates. Maximal degree in co-relation 14735. Up to 460 conditions per place. [2022-01-19 13:14:47,413 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 209 selfloop transitions, 71 changer transitions 74/495 dead transitions. [2022-01-19 13:14:47,413 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 495 transitions, 8316 flow [2022-01-19 13:14:47,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 13:14:47,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 13:14:47,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7181 transitions. [2022-01-19 13:14:47,416 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598941798941798 [2022-01-19 13:14:47,416 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7181 transitions. [2022-01-19 13:14:47,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7181 transitions. [2022-01-19 13:14:47,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:47,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7181 transitions. [2022-01-19 13:14:47,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.57777777777778) internal successors, (7181), 45 states have internal predecessors, (7181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:47,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:47,426 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:47,426 INFO L186 Difference]: Start difference. First operand has 604 places, 350 transitions, 3883 flow. Second operand 45 states and 7181 transitions. [2022-01-19 13:14:47,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 495 transitions, 8316 flow [2022-01-19 13:14:47,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 495 transitions, 7481 flow, removed 383 selfloop flow, removed 29 redundant places. [2022-01-19 13:14:47,702 INFO L242 Difference]: Finished difference. Result has 624 places, 369 transitions, 4406 flow [2022-01-19 13:14:47,702 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3692, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4406, PETRI_PLACES=624, PETRI_TRANSITIONS=369} [2022-01-19 13:14:47,702 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 437 predicate places. [2022-01-19 13:14:47,702 INFO L470 AbstractCegarLoop]: Abstraction has has 624 places, 369 transitions, 4406 flow [2022-01-19 13:14:47,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:47,703 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:47,703 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:47,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2022-01-19 13:14:47,703 INFO L402 AbstractCegarLoop]: === Iteration 370 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:47,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:47,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1492905002, now seen corresponding path program 66 times [2022-01-19 13:14:47,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:47,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597253213] [2022-01-19 13:14:47,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:47,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:47,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:47,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597253213] [2022-01-19 13:14:47,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597253213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:47,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:47,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:47,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741864778] [2022-01-19 13:14:47,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:47,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:47,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:47,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:47,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:47,813 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:47,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 369 transitions, 4406 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:47,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:47,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:47,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:48,986 INFO L129 PetriNetUnfolder]: 507/1993 cut-off events. [2022-01-19 13:14:48,986 INFO L130 PetriNetUnfolder]: For 49440/49456 co-relation queries the response was YES. [2022-01-19 13:14:49,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14986 conditions, 1993 events. 507/1993 cut-off events. For 49440/49456 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 14267 event pairs, 261 based on Foata normal form. 1/1931 useless extension candidates. Maximal degree in co-relation 14682. Up to 459 conditions per place. [2022-01-19 13:14:49,032 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 213 selfloop transitions, 75 changer transitions 76/505 dead transitions. [2022-01-19 13:14:49,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 505 transitions, 8664 flow [2022-01-19 13:14:49,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 13:14:49,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 13:14:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7026 transitions. [2022-01-19 13:14:49,036 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7603896103896104 [2022-01-19 13:14:49,036 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7026 transitions. [2022-01-19 13:14:49,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7026 transitions. [2022-01-19 13:14:49,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:49,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7026 transitions. [2022-01-19 13:14:49,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6818181818182) internal successors, (7026), 44 states have internal predecessors, (7026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:49,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:49,045 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:49,045 INFO L186 Difference]: Start difference. First operand has 624 places, 369 transitions, 4406 flow. Second operand 44 states and 7026 transitions. [2022-01-19 13:14:49,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 505 transitions, 8664 flow [2022-01-19 13:14:49,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 505 transitions, 8015 flow, removed 312 selfloop flow, removed 31 redundant places. [2022-01-19 13:14:49,317 INFO L242 Difference]: Finished difference. Result has 639 places, 379 transitions, 4818 flow [2022-01-19 13:14:49,317 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4246, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4818, PETRI_PLACES=639, PETRI_TRANSITIONS=379} [2022-01-19 13:14:49,317 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 452 predicate places. [2022-01-19 13:14:49,317 INFO L470 AbstractCegarLoop]: Abstraction has has 639 places, 379 transitions, 4818 flow [2022-01-19 13:14:49,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:49,318 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:49,318 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:49,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2022-01-19 13:14:49,318 INFO L402 AbstractCegarLoop]: === Iteration 371 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:49,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:49,318 INFO L85 PathProgramCache]: Analyzing trace with hash -120890968, now seen corresponding path program 67 times [2022-01-19 13:14:49,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:49,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038324475] [2022-01-19 13:14:49,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:49,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:49,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:49,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038324475] [2022-01-19 13:14:49,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038324475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:49,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:49,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:49,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380251826] [2022-01-19 13:14:49,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:49,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:49,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:49,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:49,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:49,445 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:49,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 379 transitions, 4818 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:49,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:49,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:49,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:50,533 INFO L129 PetriNetUnfolder]: 532/2062 cut-off events. [2022-01-19 13:14:50,534 INFO L130 PetriNetUnfolder]: For 54574/54584 co-relation queries the response was YES. [2022-01-19 13:14:50,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15913 conditions, 2062 events. 532/2062 cut-off events. For 54574/54584 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 14807 event pairs, 263 based on Foata normal form. 1/2003 useless extension candidates. Maximal degree in co-relation 15604. Up to 459 conditions per place. [2022-01-19 13:14:50,585 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 214 selfloop transitions, 92 changer transitions 68/515 dead transitions. [2022-01-19 13:14:50,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 515 transitions, 8973 flow [2022-01-19 13:14:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:14:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:14:50,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5605 transitions. [2022-01-19 13:14:50,587 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625850340136054 [2022-01-19 13:14:50,587 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5605 transitions. [2022-01-19 13:14:50,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5605 transitions. [2022-01-19 13:14:50,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:50,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5605 transitions. [2022-01-19 13:14:50,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.14285714285714) internal successors, (5605), 35 states have internal predecessors, (5605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:50,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:50,594 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:50,594 INFO L186 Difference]: Start difference. First operand has 639 places, 379 transitions, 4818 flow. Second operand 35 states and 5605 transitions. [2022-01-19 13:14:50,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 515 transitions, 8973 flow [2022-01-19 13:14:50,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 515 transitions, 8293 flow, removed 283 selfloop flow, removed 29 redundant places. [2022-01-19 13:14:50,892 INFO L242 Difference]: Finished difference. Result has 639 places, 398 transitions, 5358 flow [2022-01-19 13:14:50,892 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4550, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5358, PETRI_PLACES=639, PETRI_TRANSITIONS=398} [2022-01-19 13:14:50,892 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 452 predicate places. [2022-01-19 13:14:50,893 INFO L470 AbstractCegarLoop]: Abstraction has has 639 places, 398 transitions, 5358 flow [2022-01-19 13:14:50,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:50,893 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:50,893 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:50,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2022-01-19 13:14:50,893 INFO L402 AbstractCegarLoop]: === Iteration 372 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:50,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:50,893 INFO L85 PathProgramCache]: Analyzing trace with hash -383763530, now seen corresponding path program 68 times [2022-01-19 13:14:50,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:50,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907634391] [2022-01-19 13:14:50,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:50,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:51,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:51,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907634391] [2022-01-19 13:14:51,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907634391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:51,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:51,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:51,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234298015] [2022-01-19 13:14:51,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:51,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:51,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:51,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:51,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:51,005 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:51,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 398 transitions, 5358 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:51,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:51,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:51,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:52,173 INFO L129 PetriNetUnfolder]: 553/2091 cut-off events. [2022-01-19 13:14:52,174 INFO L130 PetriNetUnfolder]: For 55387/55416 co-relation queries the response was YES. [2022-01-19 13:14:52,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16417 conditions, 2091 events. 553/2091 cut-off events. For 55387/55416 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 15083 event pairs, 272 based on Foata normal form. 3/2031 useless extension candidates. Maximal degree in co-relation 16110. Up to 459 conditions per place. [2022-01-19 13:14:52,220 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 225 selfloop transitions, 91 changer transitions 65/522 dead transitions. [2022-01-19 13:14:52,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 522 transitions, 9219 flow [2022-01-19 13:14:52,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:14:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:14:52,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6083 transitions. [2022-01-19 13:14:52,223 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762280701754386 [2022-01-19 13:14:52,223 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6083 transitions. [2022-01-19 13:14:52,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6083 transitions. [2022-01-19 13:14:52,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:52,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6083 transitions. [2022-01-19 13:14:52,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.07894736842104) internal successors, (6083), 38 states have internal predecessors, (6083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:52,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:52,230 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:52,230 INFO L186 Difference]: Start difference. First operand has 639 places, 398 transitions, 5358 flow. Second operand 38 states and 6083 transitions. [2022-01-19 13:14:52,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 522 transitions, 9219 flow [2022-01-19 13:14:52,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 522 transitions, 8615 flow, removed 211 selfloop flow, removed 21 redundant places. [2022-01-19 13:14:52,550 INFO L242 Difference]: Finished difference. Result has 659 places, 413 transitions, 5736 flow [2022-01-19 13:14:52,550 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5028, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5736, PETRI_PLACES=659, PETRI_TRANSITIONS=413} [2022-01-19 13:14:52,550 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 472 predicate places. [2022-01-19 13:14:52,551 INFO L470 AbstractCegarLoop]: Abstraction has has 659 places, 413 transitions, 5736 flow [2022-01-19 13:14:52,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:52,551 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:52,551 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:52,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2022-01-19 13:14:52,551 INFO L402 AbstractCegarLoop]: === Iteration 373 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:52,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:52,551 INFO L85 PathProgramCache]: Analyzing trace with hash -747827044, now seen corresponding path program 69 times [2022-01-19 13:14:52,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:52,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554445866] [2022-01-19 13:14:52,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:52,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:52,657 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 13:14:52,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:52,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554445866] [2022-01-19 13:14:52,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554445866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:52,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:52,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:52,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763656370] [2022-01-19 13:14:52,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:52,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:52,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:52,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:52,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:52,660 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:52,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 659 places, 413 transitions, 5736 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:52,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:52,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:52,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:53,823 INFO L129 PetriNetUnfolder]: 577/2178 cut-off events. [2022-01-19 13:14:53,823 INFO L130 PetriNetUnfolder]: For 67947/67970 co-relation queries the response was YES. [2022-01-19 13:14:53,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17829 conditions, 2178 events. 577/2178 cut-off events. For 67947/67970 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 15992 event pairs, 302 based on Foata normal form. 3/2117 useless extension candidates. Maximal degree in co-relation 17514. Up to 459 conditions per place. [2022-01-19 13:14:53,879 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 228 selfloop transitions, 101 changer transitions 65/535 dead transitions. [2022-01-19 13:14:53,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 535 transitions, 9804 flow [2022-01-19 13:14:53,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:14:53,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:14:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2022-01-19 13:14:53,882 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2022-01-19 13:14:53,882 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2022-01-19 13:14:53,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2022-01-19 13:14:53,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:53,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2022-01-19 13:14:53,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:53,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:53,889 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:53,889 INFO L186 Difference]: Start difference. First operand has 659 places, 413 transitions, 5736 flow. Second operand 36 states and 5770 transitions. [2022-01-19 13:14:53,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 535 transitions, 9804 flow [2022-01-19 13:14:54,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 535 transitions, 9234 flow, removed 228 selfloop flow, removed 21 redundant places. [2022-01-19 13:14:54,254 INFO L242 Difference]: Finished difference. Result has 674 places, 433 transitions, 6460 flow [2022-01-19 13:14:54,254 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5473, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6460, PETRI_PLACES=674, PETRI_TRANSITIONS=433} [2022-01-19 13:14:54,254 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 487 predicate places. [2022-01-19 13:14:54,254 INFO L470 AbstractCegarLoop]: Abstraction has has 674 places, 433 transitions, 6460 flow [2022-01-19 13:14:54,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:54,255 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:54,255 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:54,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2022-01-19 13:14:54,255 INFO L402 AbstractCegarLoop]: === Iteration 374 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:54,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:54,255 INFO L85 PathProgramCache]: Analyzing trace with hash 24107932, now seen corresponding path program 70 times [2022-01-19 13:14:54,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:54,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221690671] [2022-01-19 13:14:54,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:54,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:54,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:54,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221690671] [2022-01-19 13:14:54,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221690671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:54,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:54,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:54,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371282898] [2022-01-19 13:14:54,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:54,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:54,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:54,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:54,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:54,360 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:54,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 433 transitions, 6460 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:54,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:54,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:54,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:55,523 INFO L129 PetriNetUnfolder]: 603/2256 cut-off events. [2022-01-19 13:14:55,523 INFO L130 PetriNetUnfolder]: For 73553/73571 co-relation queries the response was YES. [2022-01-19 13:14:55,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18849 conditions, 2256 events. 603/2256 cut-off events. For 73553/73571 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16781 event pairs, 290 based on Foata normal form. 1/2191 useless extension candidates. Maximal degree in co-relation 18527. Up to 459 conditions per place. [2022-01-19 13:14:55,578 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 249 selfloop transitions, 108 changer transitions 68/566 dead transitions. [2022-01-19 13:14:55,578 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 566 transitions, 10891 flow [2022-01-19 13:14:55,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:14:55,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:14:55,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5766 transitions. [2022-01-19 13:14:55,581 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626984126984127 [2022-01-19 13:14:55,581 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5766 transitions. [2022-01-19 13:14:55,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5766 transitions. [2022-01-19 13:14:55,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:55,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5766 transitions. [2022-01-19 13:14:55,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.16666666666666) internal successors, (5766), 36 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:55,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:55,588 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:55,588 INFO L186 Difference]: Start difference. First operand has 674 places, 433 transitions, 6460 flow. Second operand 36 states and 5766 transitions. [2022-01-19 13:14:55,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 566 transitions, 10891 flow [2022-01-19 13:14:56,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 566 transitions, 10309 flow, removed 229 selfloop flow, removed 19 redundant places. [2022-01-19 13:14:56,016 INFO L242 Difference]: Finished difference. Result has 693 places, 455 transitions, 7205 flow [2022-01-19 13:14:56,016 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6096, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=7205, PETRI_PLACES=693, PETRI_TRANSITIONS=455} [2022-01-19 13:14:56,016 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 506 predicate places. [2022-01-19 13:14:56,017 INFO L470 AbstractCegarLoop]: Abstraction has has 693 places, 455 transitions, 7205 flow [2022-01-19 13:14:56,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:56,017 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:56,017 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:56,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2022-01-19 13:14:56,017 INFO L402 AbstractCegarLoop]: === Iteration 375 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:56,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:56,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1246694750, now seen corresponding path program 71 times [2022-01-19 13:14:56,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:56,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501885542] [2022-01-19 13:14:56,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:56,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:56,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:56,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:56,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501885542] [2022-01-19 13:14:56,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501885542] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:56,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:56,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:56,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723091933] [2022-01-19 13:14:56,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:56,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:56,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:56,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:56,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:56,129 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:56,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 455 transitions, 7205 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:56,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:56,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:56,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:57,389 INFO L129 PetriNetUnfolder]: 596/2257 cut-off events. [2022-01-19 13:14:57,389 INFO L130 PetriNetUnfolder]: For 76502/76524 co-relation queries the response was YES. [2022-01-19 13:14:57,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18884 conditions, 2257 events. 596/2257 cut-off events. For 76502/76524 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16871 event pairs, 290 based on Foata normal form. 3/2194 useless extension candidates. Maximal degree in co-relation 18553. Up to 459 conditions per place. [2022-01-19 13:14:57,447 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 253 selfloop transitions, 109 changer transitions 66/569 dead transitions. [2022-01-19 13:14:57,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 707 places, 569 transitions, 11331 flow [2022-01-19 13:14:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:14:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:14:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5929 transitions. [2022-01-19 13:14:57,449 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763063063063063 [2022-01-19 13:14:57,449 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5929 transitions. [2022-01-19 13:14:57,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5929 transitions. [2022-01-19 13:14:57,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:57,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5929 transitions. [2022-01-19 13:14:57,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.24324324324326) internal successors, (5929), 37 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:57,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:57,457 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:57,457 INFO L186 Difference]: Start difference. First operand has 693 places, 455 transitions, 7205 flow. Second operand 37 states and 5929 transitions. [2022-01-19 13:14:57,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 707 places, 569 transitions, 11331 flow [2022-01-19 13:14:57,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 569 transitions, 10538 flow, removed 339 selfloop flow, removed 19 redundant places. [2022-01-19 13:14:57,902 INFO L242 Difference]: Finished difference. Result has 712 places, 466 transitions, 7521 flow [2022-01-19 13:14:57,902 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6814, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7521, PETRI_PLACES=712, PETRI_TRANSITIONS=466} [2022-01-19 13:14:57,903 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 525 predicate places. [2022-01-19 13:14:57,903 INFO L470 AbstractCegarLoop]: Abstraction has has 712 places, 466 transitions, 7521 flow [2022-01-19 13:14:57,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:57,903 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:57,903 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:57,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2022-01-19 13:14:57,903 INFO L402 AbstractCegarLoop]: === Iteration 376 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:57,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:57,903 INFO L85 PathProgramCache]: Analyzing trace with hash -986792438, now seen corresponding path program 72 times [2022-01-19 13:14:57,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:57,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933933868] [2022-01-19 13:14:57,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:57,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:14:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:14:58,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:14:58,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933933868] [2022-01-19 13:14:58,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933933868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:14:58,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:14:58,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:14:58,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859862842] [2022-01-19 13:14:58,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:14:58,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:14:58,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:14:58,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:14:58,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:14:58,016 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:14:58,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 466 transitions, 7521 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:58,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:14:58,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:14:58,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:14:59,296 INFO L129 PetriNetUnfolder]: 587/2248 cut-off events. [2022-01-19 13:14:59,296 INFO L130 PetriNetUnfolder]: For 75179/75207 co-relation queries the response was YES. [2022-01-19 13:14:59,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18539 conditions, 2248 events. 587/2248 cut-off events. For 75179/75207 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16873 event pairs, 235 based on Foata normal form. 9/2196 useless extension candidates. Maximal degree in co-relation 18200. Up to 459 conditions per place. [2022-01-19 13:14:59,355 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 259 selfloop transitions, 116 changer transitions 66/582 dead transitions. [2022-01-19 13:14:59,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 582 transitions, 11659 flow [2022-01-19 13:14:59,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:14:59,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:14:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6075 transitions. [2022-01-19 13:14:59,358 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612781954887218 [2022-01-19 13:14:59,358 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6075 transitions. [2022-01-19 13:14:59,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6075 transitions. [2022-01-19 13:14:59,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:14:59,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6075 transitions. [2022-01-19 13:14:59,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.8684210526316) internal successors, (6075), 38 states have internal predecessors, (6075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:59,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:59,366 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:59,366 INFO L186 Difference]: Start difference. First operand has 712 places, 466 transitions, 7521 flow. Second operand 38 states and 6075 transitions. [2022-01-19 13:14:59,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 582 transitions, 11659 flow [2022-01-19 13:14:59,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 582 transitions, 11043 flow, removed 239 selfloop flow, removed 21 redundant places. [2022-01-19 13:14:59,880 INFO L242 Difference]: Finished difference. Result has 727 places, 477 transitions, 7851 flow [2022-01-19 13:14:59,881 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7165, PETRI_DIFFERENCE_MINUEND_PLACES=668, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7851, PETRI_PLACES=727, PETRI_TRANSITIONS=477} [2022-01-19 13:14:59,881 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 540 predicate places. [2022-01-19 13:14:59,881 INFO L470 AbstractCegarLoop]: Abstraction has has 727 places, 477 transitions, 7851 flow [2022-01-19 13:14:59,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:14:59,881 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:14:59,881 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:14:59,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2022-01-19 13:14:59,882 INFO L402 AbstractCegarLoop]: === Iteration 377 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:14:59,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:14:59,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1323900006, now seen corresponding path program 73 times [2022-01-19 13:14:59,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:14:59,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120976423] [2022-01-19 13:14:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:14:59,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:14:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:00,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:00,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120976423] [2022-01-19 13:15:00,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120976423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:00,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:00,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:00,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980027452] [2022-01-19 13:15:00,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:00,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:00,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:00,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:00,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:00,025 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:00,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 727 places, 477 transitions, 7851 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:00,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:00,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:00,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:01,398 INFO L129 PetriNetUnfolder]: 607/2301 cut-off events. [2022-01-19 13:15:01,399 INFO L130 PetriNetUnfolder]: For 82807/82833 co-relation queries the response was YES. [2022-01-19 13:15:01,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19414 conditions, 2301 events. 607/2301 cut-off events. For 82807/82833 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 17430 event pairs, 259 based on Foata normal form. 11/2245 useless extension candidates. Maximal degree in co-relation 19071. Up to 459 conditions per place. [2022-01-19 13:15:01,459 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 117 changer transitions 66/597 dead transitions. [2022-01-19 13:15:01,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 597 transitions, 12206 flow [2022-01-19 13:15:01,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:15:01,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:15:01,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5921 transitions. [2022-01-19 13:15:01,463 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762033462033462 [2022-01-19 13:15:01,463 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5921 transitions. [2022-01-19 13:15:01,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5921 transitions. [2022-01-19 13:15:01,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:01,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5921 transitions. [2022-01-19 13:15:01,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.02702702702703) internal successors, (5921), 37 states have internal predecessors, (5921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:01,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:01,473 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:01,473 INFO L186 Difference]: Start difference. First operand has 727 places, 477 transitions, 7851 flow. Second operand 37 states and 5921 transitions. [2022-01-19 13:15:01,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 597 transitions, 12206 flow [2022-01-19 13:15:02,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 718 places, 597 transitions, 11638 flow, removed 221 selfloop flow, removed 21 redundant places. [2022-01-19 13:15:02,088 INFO L242 Difference]: Finished difference. Result has 743 places, 494 transitions, 8429 flow [2022-01-19 13:15:02,088 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7519, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8429, PETRI_PLACES=743, PETRI_TRANSITIONS=494} [2022-01-19 13:15:02,088 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 556 predicate places. [2022-01-19 13:15:02,089 INFO L470 AbstractCegarLoop]: Abstraction has has 743 places, 494 transitions, 8429 flow [2022-01-19 13:15:02,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:02,089 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:02,089 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:02,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2022-01-19 13:15:02,089 INFO L402 AbstractCegarLoop]: === Iteration 378 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:02,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:02,089 INFO L85 PathProgramCache]: Analyzing trace with hash 784382108, now seen corresponding path program 74 times [2022-01-19 13:15:02,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:02,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327587266] [2022-01-19 13:15:02,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:02,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:02,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:02,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327587266] [2022-01-19 13:15:02,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327587266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:02,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:02,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:02,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790359250] [2022-01-19 13:15:02,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:02,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:02,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:02,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:02,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:02,202 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:02,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 494 transitions, 8429 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:02,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:02,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:02,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:03,579 INFO L129 PetriNetUnfolder]: 628/2390 cut-off events. [2022-01-19 13:15:03,580 INFO L130 PetriNetUnfolder]: For 94225/94252 co-relation queries the response was YES. [2022-01-19 13:15:03,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20771 conditions, 2390 events. 628/2390 cut-off events. For 94225/94252 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 18357 event pairs, 285 based on Foata normal form. 7/2331 useless extension candidates. Maximal degree in co-relation 20421. Up to 459 conditions per place. [2022-01-19 13:15:03,644 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 288 selfloop transitions, 117 changer transitions 64/610 dead transitions. [2022-01-19 13:15:03,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 610 transitions, 12823 flow [2022-01-19 13:15:03,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:15:03,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:15:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-01-19 13:15:03,647 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-01-19 13:15:03,647 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-01-19 13:15:03,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-01-19 13:15:03,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:03,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-01-19 13:15:03,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:03,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:03,655 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:03,655 INFO L186 Difference]: Start difference. First operand has 743 places, 494 transitions, 8429 flow. Second operand 38 states and 6079 transitions. [2022-01-19 13:15:03,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 757 places, 610 transitions, 12823 flow [2022-01-19 13:15:04,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 736 places, 610 transitions, 12263 flow, removed 219 selfloop flow, removed 21 redundant places. [2022-01-19 13:15:04,315 INFO L242 Difference]: Finished difference. Result has 758 places, 511 transitions, 9002 flow [2022-01-19 13:15:04,316 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8098, PETRI_DIFFERENCE_MINUEND_PLACES=699, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9002, PETRI_PLACES=758, PETRI_TRANSITIONS=511} [2022-01-19 13:15:04,316 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 571 predicate places. [2022-01-19 13:15:04,316 INFO L470 AbstractCegarLoop]: Abstraction has has 758 places, 511 transitions, 9002 flow [2022-01-19 13:15:04,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:04,316 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:04,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:04,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2022-01-19 13:15:04,316 INFO L402 AbstractCegarLoop]: === Iteration 379 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:04,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:04,317 INFO L85 PathProgramCache]: Analyzing trace with hash -66473082, now seen corresponding path program 75 times [2022-01-19 13:15:04,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:04,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419330206] [2022-01-19 13:15:04,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:04,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:04,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:04,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419330206] [2022-01-19 13:15:04,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419330206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:04,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:04,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:04,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943866214] [2022-01-19 13:15:04,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:04,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:04,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:04,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:04,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:04,432 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:04,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 758 places, 511 transitions, 9002 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:04,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:04,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:04,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:05,848 INFO L129 PetriNetUnfolder]: 622/2357 cut-off events. [2022-01-19 13:15:05,849 INFO L130 PetriNetUnfolder]: For 94815/94848 co-relation queries the response was YES. [2022-01-19 13:15:05,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20415 conditions, 2357 events. 622/2357 cut-off events. For 94815/94848 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 18029 event pairs, 255 based on Foata normal form. 15/2306 useless extension candidates. Maximal degree in co-relation 20061. Up to 459 conditions per place. [2022-01-19 13:15:05,916 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 297 selfloop transitions, 118 changer transitions 66/622 dead transitions. [2022-01-19 13:15:05,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 622 transitions, 13323 flow [2022-01-19 13:15:05,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:15:05,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:15:05,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6081 transitions. [2022-01-19 13:15:05,919 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76203007518797 [2022-01-19 13:15:05,919 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6081 transitions. [2022-01-19 13:15:05,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6081 transitions. [2022-01-19 13:15:05,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:05,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6081 transitions. [2022-01-19 13:15:05,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.02631578947367) internal successors, (6081), 38 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:05,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:05,926 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:05,927 INFO L186 Difference]: Start difference. First operand has 758 places, 511 transitions, 9002 flow. Second operand 38 states and 6081 transitions. [2022-01-19 13:15:05,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 771 places, 622 transitions, 13323 flow [2022-01-19 13:15:06,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 753 places, 622 transitions, 12732 flow, removed 232 selfloop flow, removed 18 redundant places. [2022-01-19 13:15:06,571 INFO L242 Difference]: Finished difference. Result has 777 places, 518 transitions, 9220 flow [2022-01-19 13:15:06,571 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8661, PETRI_DIFFERENCE_MINUEND_PLACES=716, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9220, PETRI_PLACES=777, PETRI_TRANSITIONS=518} [2022-01-19 13:15:06,571 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 590 predicate places. [2022-01-19 13:15:06,571 INFO L470 AbstractCegarLoop]: Abstraction has has 777 places, 518 transitions, 9220 flow [2022-01-19 13:15:06,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:06,571 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:06,572 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:06,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2022-01-19 13:15:06,572 INFO L402 AbstractCegarLoop]: === Iteration 380 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:06,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:06,572 INFO L85 PathProgramCache]: Analyzing trace with hash 71637652, now seen corresponding path program 76 times [2022-01-19 13:15:06,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:06,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183770829] [2022-01-19 13:15:06,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:06,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:06,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:06,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:06,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183770829] [2022-01-19 13:15:06,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183770829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:06,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:06,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:06,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835328914] [2022-01-19 13:15:06,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:06,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:06,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:06,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:06,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:06,680 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:06,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 777 places, 518 transitions, 9220 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:06,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:06,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:06,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:08,028 INFO L129 PetriNetUnfolder]: 617/2393 cut-off events. [2022-01-19 13:15:08,028 INFO L130 PetriNetUnfolder]: For 96939/96972 co-relation queries the response was YES. [2022-01-19 13:15:08,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20571 conditions, 2393 events. 617/2393 cut-off events. For 96939/96972 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 18530 event pairs, 282 based on Foata normal form. 11/2337 useless extension candidates. Maximal degree in co-relation 20208. Up to 459 conditions per place. [2022-01-19 13:15:08,095 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 303 selfloop transitions, 116 changer transitions 66/626 dead transitions. [2022-01-19 13:15:08,095 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 789 places, 626 transitions, 13505 flow [2022-01-19 13:15:08,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:15:08,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:15:08,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2022-01-19 13:15:08,098 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2022-01-19 13:15:08,098 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2022-01-19 13:15:08,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2022-01-19 13:15:08,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:08,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2022-01-19 13:15:08,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:08,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:08,105 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:08,105 INFO L186 Difference]: Start difference. First operand has 777 places, 518 transitions, 9220 flow. Second operand 37 states and 5925 transitions. [2022-01-19 13:15:08,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 789 places, 626 transitions, 13505 flow [2022-01-19 13:15:08,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 768 places, 626 transitions, 12986 flow, removed 211 selfloop flow, removed 21 redundant places. [2022-01-19 13:15:08,841 INFO L242 Difference]: Finished difference. Result has 792 places, 526 transitions, 9514 flow [2022-01-19 13:15:08,841 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8920, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9514, PETRI_PLACES=792, PETRI_TRANSITIONS=526} [2022-01-19 13:15:08,841 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 605 predicate places. [2022-01-19 13:15:08,842 INFO L470 AbstractCegarLoop]: Abstraction has has 792 places, 526 transitions, 9514 flow [2022-01-19 13:15:08,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:08,842 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:08,842 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:08,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2022-01-19 13:15:08,842 INFO L402 AbstractCegarLoop]: === Iteration 381 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:08,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:08,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2065512434, now seen corresponding path program 77 times [2022-01-19 13:15:08,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:08,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40638077] [2022-01-19 13:15:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:08,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:08,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:08,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40638077] [2022-01-19 13:15:08,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40638077] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:08,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:08,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:08,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821983789] [2022-01-19 13:15:08,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:08,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:08,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:08,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:08,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:08,960 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:08,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 526 transitions, 9514 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:08,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:08,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:08,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:10,509 INFO L129 PetriNetUnfolder]: 660/2541 cut-off events. [2022-01-19 13:15:10,509 INFO L130 PetriNetUnfolder]: For 104418/104449 co-relation queries the response was YES. [2022-01-19 13:15:10,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21884 conditions, 2541 events. 660/2541 cut-off events. For 104418/104449 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 20169 event pairs, 246 based on Foata normal form. 3/2487 useless extension candidates. Maximal degree in co-relation 21516. Up to 461 conditions per place. [2022-01-19 13:15:10,582 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 313 selfloop transitions, 181 changer transitions 90/725 dead transitions. [2022-01-19 13:15:10,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 814 places, 725 transitions, 15935 flow [2022-01-19 13:15:10,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 13:15:10,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 13:15:10,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7341 transitions. [2022-01-19 13:15:10,585 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7599378881987577 [2022-01-19 13:15:10,585 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7341 transitions. [2022-01-19 13:15:10,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7341 transitions. [2022-01-19 13:15:10,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:10,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7341 transitions. [2022-01-19 13:15:10,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.58695652173913) internal successors, (7341), 46 states have internal predecessors, (7341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:10,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:10,594 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:10,594 INFO L186 Difference]: Start difference. First operand has 792 places, 526 transitions, 9514 flow. Second operand 46 states and 7341 transitions. [2022-01-19 13:15:10,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 814 places, 725 transitions, 15935 flow [2022-01-19 13:15:11,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 794 places, 725 transitions, 15369 flow, removed 192 selfloop flow, removed 20 redundant places. [2022-01-19 13:15:11,451 INFO L242 Difference]: Finished difference. Result has 827 places, 552 transitions, 10314 flow [2022-01-19 13:15:11,451 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9156, PETRI_DIFFERENCE_MINUEND_PLACES=749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=10314, PETRI_PLACES=827, PETRI_TRANSITIONS=552} [2022-01-19 13:15:11,451 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 640 predicate places. [2022-01-19 13:15:11,451 INFO L470 AbstractCegarLoop]: Abstraction has has 827 places, 552 transitions, 10314 flow [2022-01-19 13:15:11,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:11,451 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:11,452 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:11,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2022-01-19 13:15:11,452 INFO L402 AbstractCegarLoop]: === Iteration 382 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:11,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:11,452 INFO L85 PathProgramCache]: Analyzing trace with hash -2116882112, now seen corresponding path program 78 times [2022-01-19 13:15:11,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:11,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869693727] [2022-01-19 13:15:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:11,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:11,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:11,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869693727] [2022-01-19 13:15:11,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869693727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:11,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:11,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:11,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051323918] [2022-01-19 13:15:11,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:11,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:11,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:11,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:11,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:11,566 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:11,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 827 places, 552 transitions, 10314 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:11,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:11,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:11,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:13,186 INFO L129 PetriNetUnfolder]: 673/2541 cut-off events. [2022-01-19 13:15:13,187 INFO L130 PetriNetUnfolder]: For 100782/100801 co-relation queries the response was YES. [2022-01-19 13:15:13,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21778 conditions, 2541 events. 673/2541 cut-off events. For 100782/100801 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 19966 event pairs, 278 based on Foata normal form. 3/2477 useless extension candidates. Maximal degree in co-relation 21394. Up to 482 conditions per place. [2022-01-19 13:15:13,263 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 336 selfloop transitions, 159 changer transitions 105/741 dead transitions. [2022-01-19 13:15:13,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 836 places, 741 transitions, 16708 flow [2022-01-19 13:15:13,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 13:15:13,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 13:15:13,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6867 transitions. [2022-01-19 13:15:13,266 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604651162790698 [2022-01-19 13:15:13,266 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6867 transitions. [2022-01-19 13:15:13,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6867 transitions. [2022-01-19 13:15:13,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:13,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6867 transitions. [2022-01-19 13:15:13,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.69767441860466) internal successors, (6867), 43 states have internal predecessors, (6867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:13,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:13,274 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:13,274 INFO L186 Difference]: Start difference. First operand has 827 places, 552 transitions, 10314 flow. Second operand 43 states and 6867 transitions. [2022-01-19 13:15:13,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 836 places, 741 transitions, 16708 flow [2022-01-19 13:15:14,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 808 places, 741 transitions, 16442 flow, removed 89 selfloop flow, removed 28 redundant places. [2022-01-19 13:15:14,141 INFO L242 Difference]: Finished difference. Result has 840 places, 573 transitions, 11389 flow [2022-01-19 13:15:14,141 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10134, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=11389, PETRI_PLACES=840, PETRI_TRANSITIONS=573} [2022-01-19 13:15:14,141 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 653 predicate places. [2022-01-19 13:15:14,141 INFO L470 AbstractCegarLoop]: Abstraction has has 840 places, 573 transitions, 11389 flow [2022-01-19 13:15:14,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:14,142 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:14,142 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:14,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2022-01-19 13:15:14,142 INFO L402 AbstractCegarLoop]: === Iteration 383 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:14,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:14,142 INFO L85 PathProgramCache]: Analyzing trace with hash -51289292, now seen corresponding path program 79 times [2022-01-19 13:15:14,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:14,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48147230] [2022-01-19 13:15:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:14,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:14,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:14,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48147230] [2022-01-19 13:15:14,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48147230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:14,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:14,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:14,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096355891] [2022-01-19 13:15:14,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:14,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:14,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:14,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:14,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:14,258 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:14,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 840 places, 573 transitions, 11389 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:14,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:14,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:14,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:15,961 INFO L129 PetriNetUnfolder]: 687/2587 cut-off events. [2022-01-19 13:15:15,961 INFO L130 PetriNetUnfolder]: For 110117/110140 co-relation queries the response was YES. [2022-01-19 13:15:16,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22774 conditions, 2587 events. 687/2587 cut-off events. For 110117/110140 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 20466 event pairs, 311 based on Foata normal form. 3/2516 useless extension candidates. Maximal degree in co-relation 22384. Up to 503 conditions per place. [2022-01-19 13:15:16,048 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 288 selfloop transitions, 196 changer transitions 81/706 dead transitions. [2022-01-19 13:15:16,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 854 places, 706 transitions, 15972 flow [2022-01-19 13:15:16,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 13:15:16,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 13:15:16,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7187 transitions. [2022-01-19 13:15:16,051 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7605291005291005 [2022-01-19 13:15:16,051 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7187 transitions. [2022-01-19 13:15:16,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7187 transitions. [2022-01-19 13:15:16,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:16,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7187 transitions. [2022-01-19 13:15:16,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.7111111111111) internal successors, (7187), 45 states have internal predecessors, (7187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:16,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:16,061 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:16,061 INFO L186 Difference]: Start difference. First operand has 840 places, 573 transitions, 11389 flow. Second operand 45 states and 7187 transitions. [2022-01-19 13:15:16,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 854 places, 706 transitions, 15972 flow [2022-01-19 13:15:16,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 706 transitions, 15181 flow, removed 189 selfloop flow, removed 38 redundant places. [2022-01-19 13:15:16,950 INFO L242 Difference]: Finished difference. Result has 850 places, 590 transitions, 11813 flow [2022-01-19 13:15:16,950 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10786, PETRI_DIFFERENCE_MINUEND_PLACES=772, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=11813, PETRI_PLACES=850, PETRI_TRANSITIONS=590} [2022-01-19 13:15:16,950 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 663 predicate places. [2022-01-19 13:15:16,950 INFO L470 AbstractCegarLoop]: Abstraction has has 850 places, 590 transitions, 11813 flow [2022-01-19 13:15:16,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:16,950 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:16,950 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:16,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2022-01-19 13:15:16,951 INFO L402 AbstractCegarLoop]: === Iteration 384 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:16,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:16,951 INFO L85 PathProgramCache]: Analyzing trace with hash 978492314, now seen corresponding path program 80 times [2022-01-19 13:15:16,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:16,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493571346] [2022-01-19 13:15:16,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:16,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:17,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:17,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493571346] [2022-01-19 13:15:17,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493571346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:17,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:17,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:17,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686969457] [2022-01-19 13:15:17,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:17,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:17,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:17,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:17,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:17,084 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:17,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 850 places, 590 transitions, 11813 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:17,085 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:17,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:17,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:18,772 INFO L129 PetriNetUnfolder]: 682/2545 cut-off events. [2022-01-19 13:15:18,772 INFO L130 PetriNetUnfolder]: For 98019/98038 co-relation queries the response was YES. [2022-01-19 13:15:18,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22138 conditions, 2545 events. 682/2545 cut-off events. For 98019/98038 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 20006 event pairs, 292 based on Foata normal form. 3/2475 useless extension candidates. Maximal degree in co-relation 21747. Up to 499 conditions per place. [2022-01-19 13:15:18,846 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 349 selfloop transitions, 151 changer transitions 93/734 dead transitions. [2022-01-19 13:15:18,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 861 places, 734 transitions, 17069 flow [2022-01-19 13:15:18,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 13:15:18,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 13:15:18,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7032 transitions. [2022-01-19 13:15:18,850 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610389610389611 [2022-01-19 13:15:18,850 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7032 transitions. [2022-01-19 13:15:18,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7032 transitions. [2022-01-19 13:15:18,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:18,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7032 transitions. [2022-01-19 13:15:18,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.8181818181818) internal successors, (7032), 44 states have internal predecessors, (7032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:18,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:18,859 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:18,860 INFO L186 Difference]: Start difference. First operand has 850 places, 590 transitions, 11813 flow. Second operand 44 states and 7032 transitions. [2022-01-19 13:15:18,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 861 places, 734 transitions, 17069 flow [2022-01-19 13:15:19,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 829 places, 734 transitions, 16482 flow, removed 185 selfloop flow, removed 32 redundant places. [2022-01-19 13:15:19,745 INFO L242 Difference]: Finished difference. Result has 861 places, 597 transitions, 12225 flow [2022-01-19 13:15:19,745 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11400, PETRI_DIFFERENCE_MINUEND_PLACES=786, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=12225, PETRI_PLACES=861, PETRI_TRANSITIONS=597} [2022-01-19 13:15:19,745 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 674 predicate places. [2022-01-19 13:15:19,746 INFO L470 AbstractCegarLoop]: Abstraction has has 861 places, 597 transitions, 12225 flow [2022-01-19 13:15:19,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:19,746 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:19,746 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:19,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2022-01-19 13:15:19,746 INFO L402 AbstractCegarLoop]: === Iteration 385 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:19,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:19,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1168002550, now seen corresponding path program 81 times [2022-01-19 13:15:19,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:19,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465316597] [2022-01-19 13:15:19,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:19,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:19,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:19,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465316597] [2022-01-19 13:15:19,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465316597] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:19,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:19,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:19,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829270151] [2022-01-19 13:15:19,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:19,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:19,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:19,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:19,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:19,871 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:19,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 861 places, 597 transitions, 12225 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:19,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:19,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:19,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:21,386 INFO L129 PetriNetUnfolder]: 677/2618 cut-off events. [2022-01-19 13:15:21,387 INFO L130 PetriNetUnfolder]: For 96046/96054 co-relation queries the response was YES. [2022-01-19 13:15:21,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22222 conditions, 2618 events. 677/2618 cut-off events. For 96046/96054 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 20997 event pairs, 307 based on Foata normal form. 1/2543 useless extension candidates. Maximal degree in co-relation 21828. Up to 520 conditions per place. [2022-01-19 13:15:21,465 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 334 selfloop transitions, 165 changer transitions 75/715 dead transitions. [2022-01-19 13:15:21,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 865 places, 715 transitions, 16365 flow [2022-01-19 13:15:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:15:21,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:15:21,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5774 transitions. [2022-01-19 13:15:21,468 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7637566137566137 [2022-01-19 13:15:21,468 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5774 transitions. [2022-01-19 13:15:21,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5774 transitions. [2022-01-19 13:15:21,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:21,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5774 transitions. [2022-01-19 13:15:21,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.38888888888889) internal successors, (5774), 36 states have internal predecessors, (5774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:21,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:21,476 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:21,476 INFO L186 Difference]: Start difference. First operand has 861 places, 597 transitions, 12225 flow. Second operand 36 states and 5774 transitions. [2022-01-19 13:15:21,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 865 places, 715 transitions, 16365 flow [2022-01-19 13:15:22,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 825 places, 715 transitions, 15626 flow, removed 165 selfloop flow, removed 40 redundant places. [2022-01-19 13:15:22,367 INFO L242 Difference]: Finished difference. Result has 848 places, 613 transitions, 12509 flow [2022-01-19 13:15:22,367 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11592, PETRI_DIFFERENCE_MINUEND_PLACES=790, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=12509, PETRI_PLACES=848, PETRI_TRANSITIONS=613} [2022-01-19 13:15:22,368 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 661 predicate places. [2022-01-19 13:15:22,368 INFO L470 AbstractCegarLoop]: Abstraction has has 848 places, 613 transitions, 12509 flow [2022-01-19 13:15:22,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:22,368 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:22,368 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:22,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2022-01-19 13:15:22,368 INFO L402 AbstractCegarLoop]: === Iteration 386 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:22,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:22,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1386524382, now seen corresponding path program 82 times [2022-01-19 13:15:22,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:22,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119730825] [2022-01-19 13:15:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:22,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:22,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:22,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119730825] [2022-01-19 13:15:22,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119730825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:22,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:22,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:22,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904465617] [2022-01-19 13:15:22,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:22,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:22,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:22,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:22,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:22,476 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:22,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 848 places, 613 transitions, 12509 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:22,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:22,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:22,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:23,968 INFO L129 PetriNetUnfolder]: 680/2595 cut-off events. [2022-01-19 13:15:23,968 INFO L130 PetriNetUnfolder]: For 86784/86792 co-relation queries the response was YES. [2022-01-19 13:15:24,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21652 conditions, 2595 events. 680/2595 cut-off events. For 86784/86792 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 20672 event pairs, 286 based on Foata normal form. 1/2519 useless extension candidates. Maximal degree in co-relation 21270. Up to 534 conditions per place. [2022-01-19 13:15:24,043 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 338 selfloop transitions, 182 changer transitions 82/743 dead transitions. [2022-01-19 13:15:24,043 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 743 transitions, 16955 flow [2022-01-19 13:15:24,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:15:24,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:15:24,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5606 transitions. [2022-01-19 13:15:24,046 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7627210884353741 [2022-01-19 13:15:24,046 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5606 transitions. [2022-01-19 13:15:24,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5606 transitions. [2022-01-19 13:15:24,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:24,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5606 transitions. [2022-01-19 13:15:24,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.17142857142858) internal successors, (5606), 35 states have internal predecessors, (5606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:24,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:24,052 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:24,052 INFO L186 Difference]: Start difference. First operand has 848 places, 613 transitions, 12509 flow. Second operand 35 states and 5606 transitions. [2022-01-19 13:15:24,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 743 transitions, 16955 flow [2022-01-19 13:15:24,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 837 places, 743 transitions, 16424 flow, removed 125 selfloop flow, removed 23 redundant places. [2022-01-19 13:15:24,842 INFO L242 Difference]: Finished difference. Result has 859 places, 626 transitions, 12945 flow [2022-01-19 13:15:24,843 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12095, PETRI_DIFFERENCE_MINUEND_PLACES=803, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=12945, PETRI_PLACES=859, PETRI_TRANSITIONS=626} [2022-01-19 13:15:24,843 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 672 predicate places. [2022-01-19 13:15:24,843 INFO L470 AbstractCegarLoop]: Abstraction has has 859 places, 626 transitions, 12945 flow [2022-01-19 13:15:24,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:24,843 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:24,843 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:24,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2022-01-19 13:15:24,843 INFO L402 AbstractCegarLoop]: === Iteration 387 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:24,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:24,844 INFO L85 PathProgramCache]: Analyzing trace with hash -391632668, now seen corresponding path program 83 times [2022-01-19 13:15:24,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:24,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487679775] [2022-01-19 13:15:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:24,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:24,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:24,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:24,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487679775] [2022-01-19 13:15:24,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487679775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:24,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:24,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:24,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551238139] [2022-01-19 13:15:24,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:24,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:24,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:24,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:24,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:24,952 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:24,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 859 places, 626 transitions, 12945 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:24,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:24,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:24,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:26,551 INFO L129 PetriNetUnfolder]: 706/2716 cut-off events. [2022-01-19 13:15:26,552 INFO L130 PetriNetUnfolder]: For 91007/91017 co-relation queries the response was YES. [2022-01-19 13:15:26,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22732 conditions, 2716 events. 706/2716 cut-off events. For 91007/91017 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 22015 event pairs, 294 based on Foata normal form. 1/2644 useless extension candidates. Maximal degree in co-relation 22346. Up to 548 conditions per place. [2022-01-19 13:15:26,629 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 345 selfloop transitions, 198 changer transitions 75/759 dead transitions. [2022-01-19 13:15:26,630 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 875 places, 759 transitions, 17563 flow [2022-01-19 13:15:26,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:15:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:15:26,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6083 transitions. [2022-01-19 13:15:26,632 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762280701754386 [2022-01-19 13:15:26,632 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6083 transitions. [2022-01-19 13:15:26,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6083 transitions. [2022-01-19 13:15:26,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:26,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6083 transitions. [2022-01-19 13:15:26,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.07894736842104) internal successors, (6083), 38 states have internal predecessors, (6083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:26,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:26,640 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:26,640 INFO L186 Difference]: Start difference. First operand has 859 places, 626 transitions, 12945 flow. Second operand 38 states and 6083 transitions. [2022-01-19 13:15:26,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 875 places, 759 transitions, 17563 flow [2022-01-19 13:15:27,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 848 places, 759 transitions, 16847 flow, removed 136 selfloop flow, removed 27 redundant places. [2022-01-19 13:15:27,462 INFO L242 Difference]: Finished difference. Result has 871 places, 646 transitions, 13490 flow [2022-01-19 13:15:27,462 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12369, PETRI_DIFFERENCE_MINUEND_PLACES=811, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=13490, PETRI_PLACES=871, PETRI_TRANSITIONS=646} [2022-01-19 13:15:27,462 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 684 predicate places. [2022-01-19 13:15:27,463 INFO L470 AbstractCegarLoop]: Abstraction has has 871 places, 646 transitions, 13490 flow [2022-01-19 13:15:27,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:27,463 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:27,463 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:27,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2022-01-19 13:15:27,463 INFO L402 AbstractCegarLoop]: === Iteration 388 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:27,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:27,464 INFO L85 PathProgramCache]: Analyzing trace with hash 127120358, now seen corresponding path program 84 times [2022-01-19 13:15:27,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:27,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903468550] [2022-01-19 13:15:27,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:27,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:27,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:27,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903468550] [2022-01-19 13:15:27,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903468550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:27,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:27,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:27,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986674646] [2022-01-19 13:15:27,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:27,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:27,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:27,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:27,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:27,576 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:27,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 871 places, 646 transitions, 13490 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:27,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:27,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:27,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:29,179 INFO L129 PetriNetUnfolder]: 701/2680 cut-off events. [2022-01-19 13:15:29,179 INFO L130 PetriNetUnfolder]: For 86640/86659 co-relation queries the response was YES. [2022-01-19 13:15:29,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22443 conditions, 2680 events. 701/2680 cut-off events. For 86640/86659 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 21622 event pairs, 308 based on Foata normal form. 3/2605 useless extension candidates. Maximal degree in co-relation 22055. Up to 545 conditions per place. [2022-01-19 13:15:29,271 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 337 selfloop transitions, 194 changer transitions 71/743 dead transitions. [2022-01-19 13:15:29,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 883 places, 743 transitions, 17182 flow [2022-01-19 13:15:29,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:15:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:15:29,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5929 transitions. [2022-01-19 13:15:29,273 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763063063063063 [2022-01-19 13:15:29,273 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5929 transitions. [2022-01-19 13:15:29,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5929 transitions. [2022-01-19 13:15:29,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:29,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5929 transitions. [2022-01-19 13:15:29,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.24324324324326) internal successors, (5929), 37 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:29,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:29,281 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:29,281 INFO L186 Difference]: Start difference. First operand has 871 places, 646 transitions, 13490 flow. Second operand 37 states and 5929 transitions. [2022-01-19 13:15:29,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 883 places, 743 transitions, 17182 flow [2022-01-19 13:15:30,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 864 places, 743 transitions, 16740 flow, removed 124 selfloop flow, removed 19 redundant places. [2022-01-19 13:15:30,103 INFO L242 Difference]: Finished difference. Result has 887 places, 649 transitions, 13800 flow [2022-01-19 13:15:30,103 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13182, PETRI_DIFFERENCE_MINUEND_PLACES=828, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=13800, PETRI_PLACES=887, PETRI_TRANSITIONS=649} [2022-01-19 13:15:30,103 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 700 predicate places. [2022-01-19 13:15:30,103 INFO L470 AbstractCegarLoop]: Abstraction has has 887 places, 649 transitions, 13800 flow [2022-01-19 13:15:30,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:30,104 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:30,104 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:30,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2022-01-19 13:15:30,104 INFO L402 AbstractCegarLoop]: === Iteration 389 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:30,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:30,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1548416900, now seen corresponding path program 85 times [2022-01-19 13:15:30,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:30,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338857151] [2022-01-19 13:15:30,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:30,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:30,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:30,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338857151] [2022-01-19 13:15:30,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338857151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:30,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:30,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:30,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381411266] [2022-01-19 13:15:30,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:30,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:30,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:30,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:30,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:30,214 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:30,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 887 places, 649 transitions, 13800 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:30,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:30,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:30,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:31,854 INFO L129 PetriNetUnfolder]: 726/2777 cut-off events. [2022-01-19 13:15:31,855 INFO L130 PetriNetUnfolder]: For 91664/91672 co-relation queries the response was YES. [2022-01-19 13:15:31,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23469 conditions, 2777 events. 726/2777 cut-off events. For 91664/91672 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22660 event pairs, 321 based on Foata normal form. 1/2700 useless extension candidates. Maximal degree in co-relation 23074. Up to 559 conditions per place. [2022-01-19 13:15:31,943 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 375 selfloop transitions, 178 changer transitions 69/763 dead transitions. [2022-01-19 13:15:31,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 900 places, 763 transitions, 17828 flow [2022-01-19 13:15:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:15:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:15:31,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5933 transitions. [2022-01-19 13:15:31,946 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635778635778636 [2022-01-19 13:15:31,946 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5933 transitions. [2022-01-19 13:15:31,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5933 transitions. [2022-01-19 13:15:31,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:31,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5933 transitions. [2022-01-19 13:15:31,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.35135135135135) internal successors, (5933), 37 states have internal predecessors, (5933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:31,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:31,953 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:31,953 INFO L186 Difference]: Start difference. First operand has 887 places, 649 transitions, 13800 flow. Second operand 37 states and 5933 transitions. [2022-01-19 13:15:31,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 900 places, 763 transitions, 17828 flow [2022-01-19 13:15:32,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 763 transitions, 17314 flow, removed 101 selfloop flow, removed 24 redundant places. [2022-01-19 13:15:32,832 INFO L242 Difference]: Finished difference. Result has 900 places, 668 transitions, 14356 flow [2022-01-19 13:15:32,832 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13350, PETRI_DIFFERENCE_MINUEND_PLACES=840, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=14356, PETRI_PLACES=900, PETRI_TRANSITIONS=668} [2022-01-19 13:15:32,833 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 713 predicate places. [2022-01-19 13:15:32,833 INFO L470 AbstractCegarLoop]: Abstraction has has 900 places, 668 transitions, 14356 flow [2022-01-19 13:15:32,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:32,833 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:32,833 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:32,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2022-01-19 13:15:32,833 INFO L402 AbstractCegarLoop]: === Iteration 390 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:32,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:32,833 INFO L85 PathProgramCache]: Analyzing trace with hash -73514740, now seen corresponding path program 86 times [2022-01-19 13:15:32,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:32,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224813560] [2022-01-19 13:15:32,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:32,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:32,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:32,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224813560] [2022-01-19 13:15:32,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224813560] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:32,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:32,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:32,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703293563] [2022-01-19 13:15:32,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:32,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:32,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:32,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:32,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:32,944 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:32,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 900 places, 668 transitions, 14356 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:32,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:32,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:32,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:34,617 INFO L129 PetriNetUnfolder]: 722/2771 cut-off events. [2022-01-19 13:15:34,617 INFO L130 PetriNetUnfolder]: For 93243/93268 co-relation queries the response was YES. [2022-01-19 13:15:34,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23437 conditions, 2771 events. 722/2771 cut-off events. For 93243/93268 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 22602 event pairs, 265 based on Foata normal form. 3/2709 useless extension candidates. Maximal degree in co-relation 23038. Up to 556 conditions per place. [2022-01-19 13:15:34,699 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 361 selfloop transitions, 227 changer transitions 80/809 dead transitions. [2022-01-19 13:15:34,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 914 places, 809 transitions, 19315 flow [2022-01-19 13:15:34,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:15:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:15:34,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-01-19 13:15:34,702 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-01-19 13:15:34,702 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-01-19 13:15:34,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-01-19 13:15:34,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:34,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-01-19 13:15:34,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:34,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:34,709 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:34,709 INFO L186 Difference]: Start difference. First operand has 900 places, 668 transitions, 14356 flow. Second operand 38 states and 6079 transitions. [2022-01-19 13:15:34,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 914 places, 809 transitions, 19315 flow [2022-01-19 13:15:35,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 893 places, 809 transitions, 18893 flow, removed 101 selfloop flow, removed 21 redundant places. [2022-01-19 13:15:35,653 INFO L242 Difference]: Finished difference. Result has 916 places, 675 transitions, 14863 flow [2022-01-19 13:15:35,654 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14018, PETRI_DIFFERENCE_MINUEND_PLACES=856, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14863, PETRI_PLACES=916, PETRI_TRANSITIONS=675} [2022-01-19 13:15:35,654 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 729 predicate places. [2022-01-19 13:15:35,654 INFO L470 AbstractCegarLoop]: Abstraction has has 916 places, 675 transitions, 14863 flow [2022-01-19 13:15:35,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:35,654 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:35,654 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:35,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2022-01-19 13:15:35,655 INFO L402 AbstractCegarLoop]: === Iteration 391 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:35,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:35,655 INFO L85 PathProgramCache]: Analyzing trace with hash -630641100, now seen corresponding path program 87 times [2022-01-19 13:15:35,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:35,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232690566] [2022-01-19 13:15:35,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:35,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:35,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:35,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232690566] [2022-01-19 13:15:35,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232690566] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:35,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:35,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:35,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829761174] [2022-01-19 13:15:35,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:35,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:35,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:35,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:35,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:35,776 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:35,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 916 places, 675 transitions, 14863 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:35,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:35,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:35,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:37,501 INFO L129 PetriNetUnfolder]: 730/2798 cut-off events. [2022-01-19 13:15:37,501 INFO L130 PetriNetUnfolder]: For 93582/93590 co-relation queries the response was YES. [2022-01-19 13:15:37,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23778 conditions, 2798 events. 730/2798 cut-off events. For 93582/93590 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 22888 event pairs, 308 based on Foata normal form. 1/2724 useless extension candidates. Maximal degree in co-relation 23373. Up to 570 conditions per place. [2022-01-19 13:15:37,585 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 391 selfloop transitions, 187 changer transitions 77/796 dead transitions. [2022-01-19 13:15:37,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 927 places, 796 transitions, 19325 flow [2022-01-19 13:15:37,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 13:15:37,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 13:15:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2022-01-19 13:15:37,588 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2022-01-19 13:15:37,588 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2022-01-19 13:15:37,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2022-01-19 13:15:37,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:37,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2022-01-19 13:15:37,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:37,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:37,595 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:37,595 INFO L186 Difference]: Start difference. First operand has 916 places, 675 transitions, 14863 flow. Second operand 36 states and 5770 transitions. [2022-01-19 13:15:37,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 927 places, 796 transitions, 19325 flow [2022-01-19 13:15:38,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 906 places, 796 transitions, 18961 flow, removed 97 selfloop flow, removed 21 redundant places. [2022-01-19 13:15:38,524 INFO L242 Difference]: Finished difference. Result has 929 places, 691 transitions, 15569 flow [2022-01-19 13:15:38,525 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14579, PETRI_DIFFERENCE_MINUEND_PLACES=871, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=15569, PETRI_PLACES=929, PETRI_TRANSITIONS=691} [2022-01-19 13:15:38,525 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 742 predicate places. [2022-01-19 13:15:38,525 INFO L470 AbstractCegarLoop]: Abstraction has has 929 places, 691 transitions, 15569 flow [2022-01-19 13:15:38,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:38,525 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:38,525 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:38,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2022-01-19 13:15:38,526 INFO L402 AbstractCegarLoop]: === Iteration 392 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:38,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:38,526 INFO L85 PathProgramCache]: Analyzing trace with hash 808933784, now seen corresponding path program 88 times [2022-01-19 13:15:38,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:38,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131163691] [2022-01-19 13:15:38,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:38,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:38,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:38,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:38,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131163691] [2022-01-19 13:15:38,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131163691] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:38,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:38,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:38,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252744524] [2022-01-19 13:15:38,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:38,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:38,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:38,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:38,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:38,636 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:38,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 929 places, 691 transitions, 15569 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:38,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:38,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:38,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:40,401 INFO L129 PetriNetUnfolder]: 724/2809 cut-off events. [2022-01-19 13:15:40,401 INFO L130 PetriNetUnfolder]: For 94819/94827 co-relation queries the response was YES. [2022-01-19 13:15:40,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23872 conditions, 2809 events. 724/2809 cut-off events. For 94819/94827 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23036 event pairs, 302 based on Foata normal form. 1/2740 useless extension candidates. Maximal degree in co-relation 23462. Up to 567 conditions per place. [2022-01-19 13:15:40,502 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 404 selfloop transitions, 182 changer transitions 74/801 dead transitions. [2022-01-19 13:15:40,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 944 places, 801 transitions, 19835 flow [2022-01-19 13:15:40,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:15:40,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:15:40,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6087 transitions. [2022-01-19 13:15:40,505 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762781954887218 [2022-01-19 13:15:40,505 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6087 transitions. [2022-01-19 13:15:40,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6087 transitions. [2022-01-19 13:15:40,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:40,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6087 transitions. [2022-01-19 13:15:40,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.18421052631578) internal successors, (6087), 38 states have internal predecessors, (6087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:40,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:40,512 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:40,512 INFO L186 Difference]: Start difference. First operand has 929 places, 691 transitions, 15569 flow. Second operand 38 states and 6087 transitions. [2022-01-19 13:15:40,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 944 places, 801 transitions, 19835 flow [2022-01-19 13:15:41,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 920 places, 801 transitions, 19246 flow, removed 130 selfloop flow, removed 24 redundant places. [2022-01-19 13:15:41,473 INFO L242 Difference]: Finished difference. Result has 943 places, 696 transitions, 15799 flow [2022-01-19 13:15:41,474 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15109, PETRI_DIFFERENCE_MINUEND_PLACES=883, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=15799, PETRI_PLACES=943, PETRI_TRANSITIONS=696} [2022-01-19 13:15:41,474 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 756 predicate places. [2022-01-19 13:15:41,474 INFO L470 AbstractCegarLoop]: Abstraction has has 943 places, 696 transitions, 15799 flow [2022-01-19 13:15:41,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:41,474 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:41,474 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:41,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2022-01-19 13:15:41,474 INFO L402 AbstractCegarLoop]: === Iteration 393 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:41,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:41,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1829562648, now seen corresponding path program 89 times [2022-01-19 13:15:41,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:41,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852095717] [2022-01-19 13:15:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:41,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:41,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:41,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:41,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852095717] [2022-01-19 13:15:41,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852095717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:41,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:41,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:41,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645296300] [2022-01-19 13:15:41,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:41,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:41,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:41,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:41,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:41,588 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:41,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 943 places, 696 transitions, 15799 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:41,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:41,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:41,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:43,374 INFO L129 PetriNetUnfolder]: 749/2856 cut-off events. [2022-01-19 13:15:43,374 INFO L130 PetriNetUnfolder]: For 97212/97233 co-relation queries the response was YES. [2022-01-19 13:15:43,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24645 conditions, 2856 events. 749/2856 cut-off events. For 97212/97233 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 23557 event pairs, 313 based on Foata normal form. 3/2784 useless extension candidates. Maximal degree in co-relation 24231. Up to 581 conditions per place. [2022-01-19 13:15:43,465 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 374 selfloop transitions, 227 changer transitions 69/811 dead transitions. [2022-01-19 13:15:43,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 811 transitions, 20157 flow [2022-01-19 13:15:43,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:15:43,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:15:43,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6085 transitions. [2022-01-19 13:15:43,467 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625313283208021 [2022-01-19 13:15:43,468 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6085 transitions. [2022-01-19 13:15:43,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6085 transitions. [2022-01-19 13:15:43,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:43,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6085 transitions. [2022-01-19 13:15:43,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.1315789473684) internal successors, (6085), 38 states have internal predecessors, (6085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:43,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:43,475 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:43,475 INFO L186 Difference]: Start difference. First operand has 943 places, 696 transitions, 15799 flow. Second operand 38 states and 6085 transitions. [2022-01-19 13:15:43,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 811 transitions, 20157 flow [2022-01-19 13:15:44,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 935 places, 811 transitions, 19717 flow, removed 106 selfloop flow, removed 21 redundant places. [2022-01-19 13:15:44,464 INFO L242 Difference]: Finished difference. Result has 959 places, 715 transitions, 16596 flow [2022-01-19 13:15:44,465 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15435, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=16596, PETRI_PLACES=959, PETRI_TRANSITIONS=715} [2022-01-19 13:15:44,465 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 772 predicate places. [2022-01-19 13:15:44,465 INFO L470 AbstractCegarLoop]: Abstraction has has 959 places, 715 transitions, 16596 flow [2022-01-19 13:15:44,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:44,465 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:44,465 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:44,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2022-01-19 13:15:44,465 INFO L402 AbstractCegarLoop]: === Iteration 394 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:44,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:44,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1544985142, now seen corresponding path program 90 times [2022-01-19 13:15:44,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:44,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35256737] [2022-01-19 13:15:44,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:44,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:44,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:44,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:44,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35256737] [2022-01-19 13:15:44,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35256737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:44,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:44,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:44,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369577505] [2022-01-19 13:15:44,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:44,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:44,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:44,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:44,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:44,587 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:44,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 959 places, 715 transitions, 16596 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:44,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:44,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:44,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:46,358 INFO L129 PetriNetUnfolder]: 745/2874 cut-off events. [2022-01-19 13:15:46,359 INFO L130 PetriNetUnfolder]: For 97375/97383 co-relation queries the response was YES. [2022-01-19 13:15:46,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24728 conditions, 2874 events. 745/2874 cut-off events. For 97375/97383 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 23756 event pairs, 315 based on Foata normal form. 1/2803 useless extension candidates. Maximal degree in co-relation 24308. Up to 578 conditions per place. [2022-01-19 13:15:46,449 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 368 selfloop transitions, 231 changer transitions 71/811 dead transitions. [2022-01-19 13:15:46,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 971 places, 811 transitions, 20490 flow [2022-01-19 13:15:46,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:15:46,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:15:46,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2022-01-19 13:15:46,451 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2022-01-19 13:15:46,452 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2022-01-19 13:15:46,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2022-01-19 13:15:46,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:46,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2022-01-19 13:15:46,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:46,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:46,459 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:46,459 INFO L186 Difference]: Start difference. First operand has 959 places, 715 transitions, 16596 flow. Second operand 37 states and 5925 transitions. [2022-01-19 13:15:46,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 971 places, 811 transitions, 20490 flow [2022-01-19 13:15:47,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 951 places, 811 transitions, 19992 flow, removed 143 selfloop flow, removed 20 redundant places. [2022-01-19 13:15:47,684 INFO L242 Difference]: Finished difference. Result has 973 places, 717 transitions, 16878 flow [2022-01-19 13:15:47,684 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16236, PETRI_DIFFERENCE_MINUEND_PLACES=915, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=16878, PETRI_PLACES=973, PETRI_TRANSITIONS=717} [2022-01-19 13:15:47,685 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 786 predicate places. [2022-01-19 13:15:47,685 INFO L470 AbstractCegarLoop]: Abstraction has has 973 places, 717 transitions, 16878 flow [2022-01-19 13:15:47,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:47,685 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:47,685 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:47,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2022-01-19 13:15:47,685 INFO L402 AbstractCegarLoop]: === Iteration 395 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:47,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:47,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1511538956, now seen corresponding path program 91 times [2022-01-19 13:15:47,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:47,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85018107] [2022-01-19 13:15:47,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:47,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:47,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:47,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85018107] [2022-01-19 13:15:47,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85018107] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:47,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:47,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:47,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985405547] [2022-01-19 13:15:47,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:47,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:47,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:47,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:47,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:47,792 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:47,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 973 places, 717 transitions, 16878 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:47,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:47,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:47,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:49,464 INFO L129 PetriNetUnfolder]: 748/2892 cut-off events. [2022-01-19 13:15:49,465 INFO L130 PetriNetUnfolder]: For 95647/95655 co-relation queries the response was YES. [2022-01-19 13:15:49,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24946 conditions, 2892 events. 748/2892 cut-off events. For 95647/95655 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 23934 event pairs, 321 based on Foata normal form. 1/2822 useless extension candidates. Maximal degree in co-relation 24521. Up to 593 conditions per place. [2022-01-19 13:15:49,555 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 395 selfloop transitions, 207 changer transitions 59/802 dead transitions. [2022-01-19 13:15:49,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 979 places, 802 transitions, 20377 flow [2022-01-19 13:15:49,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:15:49,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:15:49,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4825 transitions. [2022-01-19 13:15:49,557 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658730158730159 [2022-01-19 13:15:49,557 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4825 transitions. [2022-01-19 13:15:49,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4825 transitions. [2022-01-19 13:15:49,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:49,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4825 transitions. [2022-01-19 13:15:49,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.83333333333334) internal successors, (4825), 30 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:49,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:49,564 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:49,565 INFO L186 Difference]: Start difference. First operand has 973 places, 717 transitions, 16878 flow. Second operand 30 states and 4825 transitions. [2022-01-19 13:15:49,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 979 places, 802 transitions, 20377 flow [2022-01-19 13:15:50,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 942 places, 802 transitions, 19751 flow, removed 91 selfloop flow, removed 37 redundant places. [2022-01-19 13:15:50,669 INFO L242 Difference]: Finished difference. Result has 955 places, 730 transitions, 17190 flow [2022-01-19 13:15:50,669 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16319, PETRI_DIFFERENCE_MINUEND_PLACES=913, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17190, PETRI_PLACES=955, PETRI_TRANSITIONS=730} [2022-01-19 13:15:50,669 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 768 predicate places. [2022-01-19 13:15:50,669 INFO L470 AbstractCegarLoop]: Abstraction has has 955 places, 730 transitions, 17190 flow [2022-01-19 13:15:50,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:50,670 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:50,670 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:50,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2022-01-19 13:15:50,670 INFO L402 AbstractCegarLoop]: === Iteration 396 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:50,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:50,670 INFO L85 PathProgramCache]: Analyzing trace with hash 673035828, now seen corresponding path program 92 times [2022-01-19 13:15:50,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:50,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392597933] [2022-01-19 13:15:50,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:50,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:50,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:50,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392597933] [2022-01-19 13:15:50,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392597933] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:50,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:50,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:50,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285083198] [2022-01-19 13:15:50,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:50,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:50,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:50,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:50,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:50,782 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:50,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 955 places, 730 transitions, 17190 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:50,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:50,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:50,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:52,450 INFO L129 PetriNetUnfolder]: 753/2890 cut-off events. [2022-01-19 13:15:52,450 INFO L130 PetriNetUnfolder]: For 94498/94517 co-relation queries the response was YES. [2022-01-19 13:15:52,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24964 conditions, 2890 events. 753/2890 cut-off events. For 94498/94517 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 23887 event pairs, 315 based on Foata normal form. 3/2819 useless extension candidates. Maximal degree in co-relation 24559. Up to 595 conditions per place. [2022-01-19 13:15:52,538 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 375 selfloop transitions, 239 changer transitions 58/813 dead transitions. [2022-01-19 13:15:52,538 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 969 places, 813 transitions, 20724 flow [2022-01-19 13:15:52,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:15:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:15:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 13:15:52,540 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 13:15:52,540 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 13:15:52,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 13:15:52,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:52,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 13:15:52,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:52,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:52,546 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:52,546 INFO L186 Difference]: Start difference. First operand has 955 places, 730 transitions, 17190 flow. Second operand 30 states and 4819 transitions. [2022-01-19 13:15:52,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 969 places, 813 transitions, 20724 flow [2022-01-19 13:15:53,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 957 places, 813 transitions, 20327 flow, removed 62 selfloop flow, removed 12 redundant places. [2022-01-19 13:15:53,562 INFO L242 Difference]: Finished difference. Result has 970 places, 743 transitions, 17792 flow [2022-01-19 13:15:53,562 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16839, PETRI_DIFFERENCE_MINUEND_PLACES=928, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17792, PETRI_PLACES=970, PETRI_TRANSITIONS=743} [2022-01-19 13:15:53,563 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 783 predicate places. [2022-01-19 13:15:53,563 INFO L470 AbstractCegarLoop]: Abstraction has has 970 places, 743 transitions, 17792 flow [2022-01-19 13:15:53,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:53,563 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:53,563 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:53,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2022-01-19 13:15:53,563 INFO L402 AbstractCegarLoop]: === Iteration 397 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:53,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:53,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1505201588, now seen corresponding path program 93 times [2022-01-19 13:15:53,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:53,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82372944] [2022-01-19 13:15:53,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:53,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:53,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:53,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:53,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82372944] [2022-01-19 13:15:53,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82372944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:53,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:53,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:53,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537170239] [2022-01-19 13:15:53,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:53,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:53,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:53,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:53,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:53,669 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:53,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 970 places, 743 transitions, 17792 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:53,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:53,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:53,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:15:55,326 INFO L129 PetriNetUnfolder]: 748/2899 cut-off events. [2022-01-19 13:15:55,326 INFO L130 PetriNetUnfolder]: For 96369/96377 co-relation queries the response was YES. [2022-01-19 13:15:55,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24940 conditions, 2899 events. 748/2899 cut-off events. For 96369/96377 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 24010 event pairs, 276 based on Foata normal form. 1/2840 useless extension candidates. Maximal degree in co-relation 24530. Up to 595 conditions per place. [2022-01-19 13:15:55,414 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 390 selfloop transitions, 253 changer transitions 69/853 dead transitions. [2022-01-19 13:15:55,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 984 places, 853 transitions, 22098 flow [2022-01-19 13:15:55,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:15:55,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:15:55,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-01-19 13:15:55,416 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 13:15:55,416 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-01-19 13:15:55,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-01-19 13:15:55,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:15:55,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-01-19 13:15:55,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:55,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:55,422 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:55,422 INFO L186 Difference]: Start difference. First operand has 970 places, 743 transitions, 17792 flow. Second operand 30 states and 4815 transitions. [2022-01-19 13:15:55,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 984 places, 853 transitions, 22098 flow [2022-01-19 13:15:56,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 972 places, 853 transitions, 21700 flow, removed 75 selfloop flow, removed 12 redundant places. [2022-01-19 13:15:56,513 INFO L242 Difference]: Finished difference. Result has 985 places, 749 transitions, 18195 flow [2022-01-19 13:15:56,514 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17448, PETRI_DIFFERENCE_MINUEND_PLACES=943, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18195, PETRI_PLACES=985, PETRI_TRANSITIONS=749} [2022-01-19 13:15:56,514 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 798 predicate places. [2022-01-19 13:15:56,514 INFO L470 AbstractCegarLoop]: Abstraction has has 985 places, 749 transitions, 18195 flow [2022-01-19 13:15:56,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:56,514 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:15:56,514 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:15:56,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2022-01-19 13:15:56,515 INFO L402 AbstractCegarLoop]: === Iteration 398 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:15:56,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:15:56,515 INFO L85 PathProgramCache]: Analyzing trace with hash 284993566, now seen corresponding path program 94 times [2022-01-19 13:15:56,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:15:56,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166883392] [2022-01-19 13:15:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:15:56,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:15:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:15:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:15:56,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:15:56,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166883392] [2022-01-19 13:15:56,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166883392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:15:56,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:15:56,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:15:56,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51997456] [2022-01-19 13:15:56,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:15:56,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:15:56,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:15:56,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:15:56,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:15:56,628 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 13:15:56,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 985 places, 749 transitions, 18195 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:15:56,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:15:56,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 13:15:56,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-01-19 13:15:56,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:15:56,782 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 13:15:56,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2022-01-19 13:15:56,782 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (14states, 155/210 universal loopers) in iteration 398,while PetriNetUnfolder was constructing finite prefix that currently has 1274 conditions, 230 events (11/229 cut-off events. For 2591/2599 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1377 event pairs, 4 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 859. Up to 57 conditions per place.). [2022-01-19 13:15:56,784 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 13:15:56,785 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 13:15:56,788 INFO L732 BasicCegarLoop]: Path program histogram: [252, 94, 20, 20, 2, 2, 2, 2, 2, 1, 1] [2022-01-19 13:15:56,790 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 13:15:56,790 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 13:15:56,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 01:15:56 BasicIcfg [2022-01-19 13:15:56,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 13:15:56,793 INFO L158 Benchmark]: Toolchain (without parser) took 775367.53ms. Allocated memory was 371.2MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 317.4MB in the beginning and 3.2GB in the end (delta: -2.9GB). Peak memory consumption was 4.7GB. Max. memory is 16.0GB. [2022-01-19 13:15:56,793 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 371.2MB. Free memory is still 333.6MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 13:15:56,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.31ms. Allocated memory is still 371.2MB. Free memory was 317.2MB in the beginning and 343.0MB in the end (delta: -25.8MB). Peak memory consumption was 17.2MB. Max. memory is 16.0GB. [2022-01-19 13:15:56,794 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.71ms. Allocated memory is still 371.2MB. Free memory was 343.0MB in the beginning and 340.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 13:15:56,794 INFO L158 Benchmark]: Boogie Preprocessor took 22.47ms. Allocated memory is still 371.2MB. Free memory was 340.2MB in the beginning and 339.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 13:15:56,794 INFO L158 Benchmark]: RCFGBuilder took 424.07ms. Allocated memory is still 371.2MB. Free memory was 339.1MB in the beginning and 322.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-19 13:15:56,794 INFO L158 Benchmark]: TraceAbstraction took 774638.77ms. Allocated memory was 371.2MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 321.3MB in the beginning and 3.2GB in the end (delta: -2.9GB). Peak memory consumption was 4.7GB. Max. memory is 16.0GB. [2022-01-19 13:15:56,796 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 371.2MB. Free memory is still 333.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 235.31ms. Allocated memory is still 371.2MB. Free memory was 317.2MB in the beginning and 343.0MB in the end (delta: -25.8MB). Peak memory consumption was 17.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.71ms. Allocated memory is still 371.2MB. Free memory was 343.0MB in the beginning and 340.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.47ms. Allocated memory is still 371.2MB. Free memory was 340.2MB in the beginning and 339.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 424.07ms. Allocated memory is still 371.2MB. Free memory was 339.1MB in the beginning and 322.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 774638.77ms. Allocated memory was 371.2MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 321.3MB in the beginning and 3.2GB in the end (delta: -2.9GB). Peak memory consumption was 4.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (14states, 155/210 universal loopers) in iteration 398,while PetriNetUnfolder was constructing finite prefix that currently has 1274 conditions, 230 events (11/229 cut-off events. For 2591/2599 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1377 event pairs, 4 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 859. Up to 57 conditions per place.). - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (14states, 155/210 universal loopers) in iteration 398,while PetriNetUnfolder was constructing finite prefix that currently has 1274 conditions, 230 events (11/229 cut-off events. For 2591/2599 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1377 event pairs, 4 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 859. Up to 57 conditions per place.). - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (14states, 155/210 universal loopers) in iteration 398,while PetriNetUnfolder was constructing finite prefix that currently has 1274 conditions, 230 events (11/229 cut-off events. For 2591/2599 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1377 event pairs, 4 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 859. Up to 57 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 300 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 774.5s, OverallIterations: 398, TraceHistogramMax: 1, PathProgramHistogramMax: 252, EmptinessCheckTime: 0.0s, AutomataDifference: 727.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47340 SdHoareTripleChecker+Valid, 57.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47340 mSDsluCounter, 255216 SdHoareTripleChecker+Invalid, 47.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 248423 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 147499 IncrementalHoareTripleChecker+Invalid, 147573 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 31043 mSDtfsCounter, 147499 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16638 GetRequests, 1287 SyntacticMatches, 0 SemanticMatches, 15351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149016 ImplicationChecksByTransitivity, 149.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23198occurred in iteration=259, InterpolantAutomatonStates: 12982, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 42.8s InterpolantComputationTime, 43014 NumberOfCodeBlocks, 43014 NumberOfCodeBlocksAsserted, 398 NumberOfCheckSat, 42616 ConstructedInterpolants, 0 QuantifiedInterpolants, 189621 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 398 InterpolantComputations, 398 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2022-01-19 13:15:56,810 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end