/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-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/queue_longest.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 04:28:56,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 04:28:56,953 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 04:28:56,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 04:28:56,958 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 04:28:56,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 04:28:56,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 04:28:56,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 04:28:56,990 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 04:28:56,994 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 04:28:56,994 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 04:28:56,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 04:28:56,995 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 04:28:56,996 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 04:28:56,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 04:28:56,996 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 04:28:56,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 04:28:56,997 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 04:28:56,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 04:28:56,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 04:28:56,997 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 04:28:56,998 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 04:28:56,998 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 04:28:56,999 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 04:28:56,999 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 04:28:56,999 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 04:28:57,000 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 04:28:57,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 04:28:57,000 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 04:28:57,000 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 04:28:57,001 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 04:28:57,001 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 04:28:57,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 04:28:57,001 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 04:28:57,002 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 04:28:57,002 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 04:28:57,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 04:28:57,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 04:28:57,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 04:28:57,334 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 04:28:57,336 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 04:28:57,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longest.i [2023-08-24 04:28:58,482 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 04:28:58,809 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 04:28:58,809 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i [2023-08-24 04:28:58,832 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0cf165b6/de66f9a3c58a4456be7fab863f2b4258/FLAGa654598d0 [2023-08-24 04:28:58,847 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0cf165b6/de66f9a3c58a4456be7fab863f2b4258 [2023-08-24 04:28:58,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 04:28:58,853 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 04:28:58,855 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 04:28:58,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 04:28:58,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 04:28:58,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 04:28:58" (1/1) ... [2023-08-24 04:28:58,860 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e379327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:58, skipping insertion in model container [2023-08-24 04:28:58,861 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 04:28:58" (1/1) ... [2023-08-24 04:28:58,920 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 04:28:59,339 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43296,43309] [2023-08-24 04:28:59,344 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43503,43516] [2023-08-24 04:28:59,350 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43783,43796] [2023-08-24 04:28:59,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 04:28:59,367 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 04:28:59,385 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-24 04:28:59,387 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-24 04:28:59,412 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [750] [2023-08-24 04:28:59,429 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43296,43309] [2023-08-24 04:28:59,430 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43503,43516] [2023-08-24 04:28:59,432 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43783,43796] [2023-08-24 04:28:59,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 04:28:59,480 INFO L206 MainTranslator]: Completed translation [2023-08-24 04:28:59,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:59 WrapperNode [2023-08-24 04:28:59,480 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 04:28:59,481 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 04:28:59,481 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 04:28:59,481 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 04:28:59,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:59" (1/1) ... [2023-08-24 04:28:59,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:59" (1/1) ... [2023-08-24 04:28:59,526 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 243 [2023-08-24 04:28:59,526 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 04:28:59,527 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 04:28:59,527 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 04:28:59,527 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 04:28:59,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:59" (1/1) ... [2023-08-24 04:28:59,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:59" (1/1) ... [2023-08-24 04:28:59,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:59" (1/1) ... [2023-08-24 04:28:59,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:59" (1/1) ... [2023-08-24 04:28:59,552 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:59" (1/1) ... [2023-08-24 04:28:59,555 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:59" (1/1) ... [2023-08-24 04:28:59,559 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:59" (1/1) ... [2023-08-24 04:28:59,560 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:59" (1/1) ... [2023-08-24 04:28:59,565 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 04:28:59,566 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 04:28:59,566 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 04:28:59,566 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 04:28:59,568 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:59" (1/1) ... [2023-08-24 04:28:59,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 04:28:59,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:28:59,602 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) [2023-08-24 04:28:59,604 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 [2023-08-24 04:28:59,627 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-24 04:28:59,627 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-24 04:28:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-24 04:28:59,628 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-24 04:28:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 04:28:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 04:28:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 04:28:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 04:28:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 04:28:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 04:28:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 04:28:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 04:28:59,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 04:28:59,630 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 04:28:59,753 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 04:28:59,755 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 04:29:00,044 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 04:29:00,051 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 04:29:00,052 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 04:29:00,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 04:29:00 BoogieIcfgContainer [2023-08-24 04:29:00,054 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 04:29:00,056 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 04:29:00,056 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 04:29:00,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 04:29:00,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 04:28:58" (1/3) ... [2023-08-24 04:29:00,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ed1e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 04:29:00, skipping insertion in model container [2023-08-24 04:29:00,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:59" (2/3) ... [2023-08-24 04:29:00,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ed1e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 04:29:00, skipping insertion in model container [2023-08-24 04:29:00,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 04:29:00" (3/3) ... [2023-08-24 04:29:00,061 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2023-08-24 04:29:00,076 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 04:29:00,076 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-24 04:29:00,076 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 04:29:00,204 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 04:29:00,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 258 transitions, 532 flow [2023-08-24 04:29:00,313 INFO L124 PetriNetUnfolderBase]: 15/256 cut-off events. [2023-08-24 04:29:00,313 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 04:29:00,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 256 events. 15/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 359 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-08-24 04:29:00,334 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 258 transitions, 532 flow [2023-08-24 04:29:00,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 247 transitions, 503 flow [2023-08-24 04:29:00,342 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 04:29:00,358 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 247 transitions, 503 flow [2023-08-24 04:29:00,364 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 247 transitions, 503 flow [2023-08-24 04:29:00,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 247 transitions, 503 flow [2023-08-24 04:29:00,430 INFO L124 PetriNetUnfolderBase]: 15/247 cut-off events. [2023-08-24 04:29:00,431 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 04:29:00,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 247 events. 15/247 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 326 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-08-24 04:29:00,444 INFO L119 LiptonReduction]: Number of co-enabled transitions 15864 [2023-08-24 04:29:07,126 INFO L134 LiptonReduction]: Checked pairs total: 33075 [2023-08-24 04:29:07,127 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-08-24 04:29:07,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 04:29:07,144 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@536a01be, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 04:29:07,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-24 04:29:07,146 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 04:29:07,146 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-24 04:29:07,146 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 04:29:07,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:07,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-24 04:29:07,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:07,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:07,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2023-08-24 04:29:07,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:07,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769471229] [2023-08-24 04:29:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:07,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:07,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:07,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:07,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769471229] [2023-08-24 04:29:07,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769471229] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:07,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:07,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-24 04:29:07,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999031426] [2023-08-24 04:29:07,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:07,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 04:29:07,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:07,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 04:29:07,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 04:29:07,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 473 [2023-08-24 04:29:07,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 141 flow. Second operand has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:07,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:07,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 473 [2023-08-24 04:29:07,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:07,693 INFO L124 PetriNetUnfolderBase]: 1540/2645 cut-off events. [2023-08-24 04:29:07,693 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-24 04:29:07,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5115 conditions, 2645 events. 1540/2645 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12466 event pairs, 1212 based on Foata normal form. 32/2302 useless extension candidates. Maximal degree in co-relation 4962. Up to 2396 conditions per place. [2023-08-24 04:29:07,707 INFO L140 encePairwiseOnDemand]: 470/473 looper letters, 53 selfloop transitions, 0 changer transitions 0/63 dead transitions. [2023-08-24 04:29:07,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 241 flow [2023-08-24 04:29:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 04:29:07,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 04:29:07,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 546 transitions. [2023-08-24 04:29:07,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771670190274841 [2023-08-24 04:29:07,728 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 546 transitions. [2023-08-24 04:29:07,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 546 transitions. [2023-08-24 04:29:07,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:07,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 546 transitions. [2023-08-24 04:29:07,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 273.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:07,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:07,747 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:07,748 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 141 flow. Second operand 2 states and 546 transitions. [2023-08-24 04:29:07,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 241 flow [2023-08-24 04:29:07,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 236 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 04:29:07,755 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 130 flow [2023-08-24 04:29:07,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2023-08-24 04:29:07,761 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2023-08-24 04:29:07,762 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 130 flow [2023-08-24 04:29:07,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:07,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:07,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:07,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 04:29:07,763 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:07,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:07,771 INFO L85 PathProgramCache]: Analyzing trace with hash 110343563, now seen corresponding path program 1 times [2023-08-24 04:29:07,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:07,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883373849] [2023-08-24 04:29:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:07,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:08,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:08,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883373849] [2023-08-24 04:29:08,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883373849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:08,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:08,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 04:29:08,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108958828] [2023-08-24 04:29:08,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:08,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 04:29:08,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:08,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 04:29:08,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 04:29:08,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 473 [2023-08-24 04:29:08,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:08,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:08,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 473 [2023-08-24 04:29:08,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:08,316 INFO L124 PetriNetUnfolderBase]: 1508/2611 cut-off events. [2023-08-24 04:29:08,316 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 04:29:08,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5032 conditions, 2611 events. 1508/2611 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 12447 event pairs, 1167 based on Foata normal form. 0/2268 useless extension candidates. Maximal degree in co-relation 5029. Up to 2249 conditions per place. [2023-08-24 04:29:08,330 INFO L140 encePairwiseOnDemand]: 469/473 looper letters, 68 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2023-08-24 04:29:08,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 81 transitions, 310 flow [2023-08-24 04:29:08,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 04:29:08,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 04:29:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 789 transitions. [2023-08-24 04:29:08,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5560253699788583 [2023-08-24 04:29:08,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 789 transitions. [2023-08-24 04:29:08,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 789 transitions. [2023-08-24 04:29:08,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:08,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 789 transitions. [2023-08-24 04:29:08,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:08,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:08,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:08,339 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 130 flow. Second operand 3 states and 789 transitions. [2023-08-24 04:29:08,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 81 transitions, 310 flow [2023-08-24 04:29:08,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 81 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 04:29:08,342 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 134 flow [2023-08-24 04:29:08,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2023-08-24 04:29:08,343 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2023-08-24 04:29:08,343 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 134 flow [2023-08-24 04:29:08,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:08,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:08,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:08,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 04:29:08,344 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:08,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:08,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1330496416, now seen corresponding path program 1 times [2023-08-24 04:29:08,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:08,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214278829] [2023-08-24 04:29:08,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:08,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:09,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:09,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214278829] [2023-08-24 04:29:09,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214278829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:09,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:09,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 04:29:09,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772871070] [2023-08-24 04:29:09,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:09,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 04:29:09,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:09,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 04:29:09,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 04:29:09,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 473 [2023-08-24 04:29:09,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:09,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:09,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 473 [2023-08-24 04:29:09,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:09,560 INFO L124 PetriNetUnfolderBase]: 1608/2744 cut-off events. [2023-08-24 04:29:09,560 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-24 04:29:09,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5428 conditions, 2744 events. 1608/2744 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 12803 event pairs, 1244 based on Foata normal form. 0/2392 useless extension candidates. Maximal degree in co-relation 5424. Up to 2518 conditions per place. [2023-08-24 04:29:09,575 INFO L140 encePairwiseOnDemand]: 467/473 looper letters, 58 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2023-08-24 04:29:09,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 288 flow [2023-08-24 04:29:09,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 04:29:09,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 04:29:09,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 991 transitions. [2023-08-24 04:29:09,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41902748414376323 [2023-08-24 04:29:09,579 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 991 transitions. [2023-08-24 04:29:09,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 991 transitions. [2023-08-24 04:29:09,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:09,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 991 transitions. [2023-08-24 04:29:09,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 198.2) internal successors, (991), 5 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:09,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 473.0) internal successors, (2838), 6 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:09,586 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 473.0) internal successors, (2838), 6 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:09,586 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 134 flow. Second operand 5 states and 991 transitions. [2023-08-24 04:29:09,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 288 flow [2023-08-24 04:29:09,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 73 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 04:29:09,591 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 173 flow [2023-08-24 04:29:09,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2023-08-24 04:29:09,592 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2023-08-24 04:29:09,592 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 173 flow [2023-08-24 04:29:09,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:09,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:09,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:09,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 04:29:09,594 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:09,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:09,594 INFO L85 PathProgramCache]: Analyzing trace with hash -588975779, now seen corresponding path program 1 times [2023-08-24 04:29:09,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:09,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350274626] [2023-08-24 04:29:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:09,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:10,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:10,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:10,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350274626] [2023-08-24 04:29:10,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350274626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:10,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:10,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 04:29:10,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755727188] [2023-08-24 04:29:10,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:10,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 04:29:10,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:10,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 04:29:10,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 04:29:10,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 473 [2023-08-24 04:29:10,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:10,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:10,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 473 [2023-08-24 04:29:10,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:10,484 INFO L124 PetriNetUnfolderBase]: 1839/3131 cut-off events. [2023-08-24 04:29:10,484 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-08-24 04:29:10,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6327 conditions, 3131 events. 1839/3131 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 15156 event pairs, 302 based on Foata normal form. 17/2811 useless extension candidates. Maximal degree in co-relation 6320. Up to 2548 conditions per place. [2023-08-24 04:29:10,502 INFO L140 encePairwiseOnDemand]: 465/473 looper letters, 98 selfloop transitions, 16 changer transitions 0/122 dead transitions. [2023-08-24 04:29:10,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 122 transitions, 526 flow [2023-08-24 04:29:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 04:29:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 04:29:10,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1198 transitions. [2023-08-24 04:29:10,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42212825933756165 [2023-08-24 04:29:10,505 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1198 transitions. [2023-08-24 04:29:10,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1198 transitions. [2023-08-24 04:29:10,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:10,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1198 transitions. [2023-08-24 04:29:10,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.66666666666666) internal successors, (1198), 6 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:10,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:10,514 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:10,515 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 173 flow. Second operand 6 states and 1198 transitions. [2023-08-24 04:29:10,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 122 transitions, 526 flow [2023-08-24 04:29:10,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 122 transitions, 526 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 04:29:10,520 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 263 flow [2023-08-24 04:29:10,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2023-08-24 04:29:10,521 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2023-08-24 04:29:10,521 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 263 flow [2023-08-24 04:29:10,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:10,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:10,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:10,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 04:29:10,522 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:10,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash -507576723, now seen corresponding path program 2 times [2023-08-24 04:29:10,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:10,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918495736] [2023-08-24 04:29:10,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:10,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:11,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:11,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918495736] [2023-08-24 04:29:11,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918495736] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:11,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:11,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 04:29:11,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876250221] [2023-08-24 04:29:11,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:11,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 04:29:11,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:11,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 04:29:11,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-24 04:29:11,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 473 [2023-08-24 04:29:11,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:11,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:11,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 473 [2023-08-24 04:29:11,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:11,746 INFO L124 PetriNetUnfolderBase]: 1970/3344 cut-off events. [2023-08-24 04:29:11,746 INFO L125 PetriNetUnfolderBase]: For 620/620 co-relation queries the response was YES. [2023-08-24 04:29:11,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7238 conditions, 3344 events. 1970/3344 cut-off events. For 620/620 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 16365 event pairs, 834 based on Foata normal form. 17/3012 useless extension candidates. Maximal degree in co-relation 7227. Up to 2536 conditions per place. [2023-08-24 04:29:11,768 INFO L140 encePairwiseOnDemand]: 465/473 looper letters, 100 selfloop transitions, 19 changer transitions 0/127 dead transitions. [2023-08-24 04:29:11,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 127 transitions, 622 flow [2023-08-24 04:29:11,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 04:29:11,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 04:29:11,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1197 transitions. [2023-08-24 04:29:11,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42177589852008457 [2023-08-24 04:29:11,772 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1197 transitions. [2023-08-24 04:29:11,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1197 transitions. [2023-08-24 04:29:11,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:11,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1197 transitions. [2023-08-24 04:29:11,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.5) internal successors, (1197), 6 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:11,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:11,783 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:11,783 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 263 flow. Second operand 6 states and 1197 transitions. [2023-08-24 04:29:11,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 127 transitions, 622 flow [2023-08-24 04:29:11,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 127 transitions, 614 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-24 04:29:11,792 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 342 flow [2023-08-24 04:29:11,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2023-08-24 04:29:11,794 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 19 predicate places. [2023-08-24 04:29:11,794 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 342 flow [2023-08-24 04:29:11,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:11,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:11,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:11,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 04:29:11,795 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:11,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:11,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1152821177, now seen corresponding path program 3 times [2023-08-24 04:29:11,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:11,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872840589] [2023-08-24 04:29:11,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:11,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:12,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:12,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872840589] [2023-08-24 04:29:12,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872840589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:12,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:12,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 04:29:12,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863167690] [2023-08-24 04:29:12,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:12,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 04:29:12,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:12,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 04:29:12,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-24 04:29:12,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-08-24 04:29:12,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 342 flow. Second operand has 9 states, 9 states have (on average 175.44444444444446) internal successors, (1579), 9 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:12,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:12,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-08-24 04:29:12,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:13,215 INFO L124 PetriNetUnfolderBase]: 2695/4564 cut-off events. [2023-08-24 04:29:13,215 INFO L125 PetriNetUnfolderBase]: For 1308/1308 co-relation queries the response was YES. [2023-08-24 04:29:13,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10132 conditions, 4564 events. 2695/4564 cut-off events. For 1308/1308 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 24051 event pairs, 579 based on Foata normal form. 0/4082 useless extension candidates. Maximal degree in co-relation 10118. Up to 2481 conditions per place. [2023-08-24 04:29:13,246 INFO L140 encePairwiseOnDemand]: 462/473 looper letters, 156 selfloop transitions, 25 changer transitions 3/192 dead transitions. [2023-08-24 04:29:13,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 192 transitions, 970 flow [2023-08-24 04:29:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 04:29:13,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 04:29:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1739 transitions. [2023-08-24 04:29:13,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4085036410617806 [2023-08-24 04:29:13,251 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1739 transitions. [2023-08-24 04:29:13,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1739 transitions. [2023-08-24 04:29:13,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:13,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1739 transitions. [2023-08-24 04:29:13,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 193.22222222222223) internal successors, (1739), 9 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:13,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:13,262 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:13,262 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 342 flow. Second operand 9 states and 1739 transitions. [2023-08-24 04:29:13,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 192 transitions, 970 flow [2023-08-24 04:29:13,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 192 transitions, 960 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-24 04:29:13,269 INFO L231 Difference]: Finished difference. Result has 94 places, 93 transitions, 455 flow [2023-08-24 04:29:13,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=455, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2023-08-24 04:29:13,270 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 31 predicate places. [2023-08-24 04:29:13,270 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 455 flow [2023-08-24 04:29:13,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 175.44444444444446) internal successors, (1579), 9 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:13,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:13,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:13,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 04:29:13,272 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:13,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:13,272 INFO L85 PathProgramCache]: Analyzing trace with hash 454650260, now seen corresponding path program 1 times [2023-08-24 04:29:13,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:13,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692439022] [2023-08-24 04:29:13,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:13,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:13,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:13,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:13,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692439022] [2023-08-24 04:29:13,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692439022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:13,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:13,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-24 04:29:13,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209059698] [2023-08-24 04:29:13,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:13,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 04:29:13,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:13,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 04:29:13,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-24 04:29:13,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-08-24 04:29:13,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 455 flow. Second operand has 10 states, 10 states have (on average 175.3) internal successors, (1753), 10 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:13,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:13,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-08-24 04:29:13,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:14,657 INFO L124 PetriNetUnfolderBase]: 2672/4539 cut-off events. [2023-08-24 04:29:14,658 INFO L125 PetriNetUnfolderBase]: For 2319/2319 co-relation queries the response was YES. [2023-08-24 04:29:14,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10719 conditions, 4539 events. 2672/4539 cut-off events. For 2319/2319 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 23922 event pairs, 1905 based on Foata normal form. 0/4050 useless extension candidates. Maximal degree in co-relation 10700. Up to 4236 conditions per place. [2023-08-24 04:29:14,688 INFO L140 encePairwiseOnDemand]: 462/473 looper letters, 88 selfloop transitions, 17 changer transitions 0/113 dead transitions. [2023-08-24 04:29:14,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 113 transitions, 737 flow [2023-08-24 04:29:14,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 04:29:14,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 04:29:14,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1647 transitions. [2023-08-24 04:29:14,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.386892177589852 [2023-08-24 04:29:14,694 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1647 transitions. [2023-08-24 04:29:14,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1647 transitions. [2023-08-24 04:29:14,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:14,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1647 transitions. [2023-08-24 04:29:14,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:14,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:14,705 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:14,705 INFO L175 Difference]: Start difference. First operand has 94 places, 93 transitions, 455 flow. Second operand 9 states and 1647 transitions. [2023-08-24 04:29:14,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 113 transitions, 737 flow [2023-08-24 04:29:14,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 113 transitions, 704 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-24 04:29:14,718 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 528 flow [2023-08-24 04:29:14,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=528, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2023-08-24 04:29:14,719 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 40 predicate places. [2023-08-24 04:29:14,719 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 528 flow [2023-08-24 04:29:14,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 175.3) internal successors, (1753), 10 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:14,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:14,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:14,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 04:29:14,720 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:14,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:14,721 INFO L85 PathProgramCache]: Analyzing trace with hash -535562244, now seen corresponding path program 1 times [2023-08-24 04:29:14,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:14,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032912806] [2023-08-24 04:29:14,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:14,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:14,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:14,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032912806] [2023-08-24 04:29:14,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032912806] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:14,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:14,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 04:29:14,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816776342] [2023-08-24 04:29:14,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:14,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 04:29:14,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:14,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 04:29:14,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 04:29:14,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 473 [2023-08-24 04:29:14,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 528 flow. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:14,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:14,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 473 [2023-08-24 04:29:14,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:15,127 INFO L124 PetriNetUnfolderBase]: 1879/3227 cut-off events. [2023-08-24 04:29:15,128 INFO L125 PetriNetUnfolderBase]: For 807/825 co-relation queries the response was YES. [2023-08-24 04:29:15,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7222 conditions, 3227 events. 1879/3227 cut-off events. For 807/825 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14190 event pairs, 1030 based on Foata normal form. 18/2804 useless extension candidates. Maximal degree in co-relation 7198. Up to 1612 conditions per place. [2023-08-24 04:29:15,151 INFO L140 encePairwiseOnDemand]: 469/473 looper letters, 95 selfloop transitions, 3 changer transitions 4/113 dead transitions. [2023-08-24 04:29:15,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 113 transitions, 688 flow [2023-08-24 04:29:15,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 04:29:15,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 04:29:15,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 799 transitions. [2023-08-24 04:29:15,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630725863284003 [2023-08-24 04:29:15,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 799 transitions. [2023-08-24 04:29:15,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 799 transitions. [2023-08-24 04:29:15,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:15,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 799 transitions. [2023-08-24 04:29:15,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:15,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:15,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:15,160 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 528 flow. Second operand 3 states and 799 transitions. [2023-08-24 04:29:15,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 113 transitions, 688 flow [2023-08-24 04:29:15,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 113 transitions, 611 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-08-24 04:29:15,165 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 365 flow [2023-08-24 04:29:15,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=365, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2023-08-24 04:29:15,167 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 31 predicate places. [2023-08-24 04:29:15,167 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 365 flow [2023-08-24 04:29:15,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:15,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:15,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:15,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 04:29:15,168 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:15,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:15,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1966953527, now seen corresponding path program 1 times [2023-08-24 04:29:15,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:15,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929018207] [2023-08-24 04:29:15,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:15,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:15,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:15,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:15,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929018207] [2023-08-24 04:29:15,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929018207] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:15,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:15,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-24 04:29:15,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309135211] [2023-08-24 04:29:15,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:15,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 04:29:15,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:15,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 04:29:15,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-24 04:29:15,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 473 [2023-08-24 04:29:15,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 365 flow. Second operand has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:15,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:15,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 473 [2023-08-24 04:29:15,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:16,675 INFO L124 PetriNetUnfolderBase]: 1644/2906 cut-off events. [2023-08-24 04:29:16,675 INFO L125 PetriNetUnfolderBase]: For 436/436 co-relation queries the response was YES. [2023-08-24 04:29:16,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6340 conditions, 2906 events. 1644/2906 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12791 event pairs, 533 based on Foata normal form. 9/2528 useless extension candidates. Maximal degree in co-relation 6320. Up to 2003 conditions per place. [2023-08-24 04:29:16,688 INFO L140 encePairwiseOnDemand]: 461/473 looper letters, 95 selfloop transitions, 23 changer transitions 10/137 dead transitions. [2023-08-24 04:29:16,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 137 transitions, 730 flow [2023-08-24 04:29:16,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 04:29:16,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 04:29:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1646 transitions. [2023-08-24 04:29:16,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38665727037820063 [2023-08-24 04:29:16,693 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1646 transitions. [2023-08-24 04:29:16,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1646 transitions. [2023-08-24 04:29:16,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:16,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1646 transitions. [2023-08-24 04:29:16,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.88888888888889) internal successors, (1646), 9 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:16,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:16,705 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:16,705 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 365 flow. Second operand 9 states and 1646 transitions. [2023-08-24 04:29:16,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 137 transitions, 730 flow [2023-08-24 04:29:16,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 137 transitions, 713 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-24 04:29:16,709 INFO L231 Difference]: Finished difference. Result has 97 places, 86 transitions, 417 flow [2023-08-24 04:29:16,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=417, PETRI_PLACES=97, PETRI_TRANSITIONS=86} [2023-08-24 04:29:16,711 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 34 predicate places. [2023-08-24 04:29:16,712 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 86 transitions, 417 flow [2023-08-24 04:29:16,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:16,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:16,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:16,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 04:29:16,725 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:16,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:16,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1215939803, now seen corresponding path program 2 times [2023-08-24 04:29:16,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:16,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177408692] [2023-08-24 04:29:16,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:16,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:17,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:17,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177408692] [2023-08-24 04:29:17,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177408692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:17,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:17,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-24 04:29:17,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940542291] [2023-08-24 04:29:17,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:17,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 04:29:17,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:17,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 04:29:17,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-24 04:29:17,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 473 [2023-08-24 04:29:17,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 86 transitions, 417 flow. Second operand has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:17,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:17,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 473 [2023-08-24 04:29:17,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:18,221 INFO L124 PetriNetUnfolderBase]: 1778/3157 cut-off events. [2023-08-24 04:29:18,221 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2023-08-24 04:29:18,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7051 conditions, 3157 events. 1778/3157 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14505 event pairs, 469 based on Foata normal form. 0/2733 useless extension candidates. Maximal degree in co-relation 7031. Up to 1744 conditions per place. [2023-08-24 04:29:18,239 INFO L140 encePairwiseOnDemand]: 462/473 looper letters, 100 selfloop transitions, 27 changer transitions 12/148 dead transitions. [2023-08-24 04:29:18,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 148 transitions, 849 flow [2023-08-24 04:29:18,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 04:29:18,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 04:29:18,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1653 transitions. [2023-08-24 04:29:18,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3883016208597604 [2023-08-24 04:29:18,244 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1653 transitions. [2023-08-24 04:29:18,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1653 transitions. [2023-08-24 04:29:18,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:18,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1653 transitions. [2023-08-24 04:29:18,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 183.66666666666666) internal successors, (1653), 9 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:18,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:18,254 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:18,254 INFO L175 Difference]: Start difference. First operand has 97 places, 86 transitions, 417 flow. Second operand 9 states and 1653 transitions. [2023-08-24 04:29:18,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 148 transitions, 849 flow [2023-08-24 04:29:18,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 148 transitions, 808 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-24 04:29:18,260 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 476 flow [2023-08-24 04:29:18,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=476, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2023-08-24 04:29:18,262 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 39 predicate places. [2023-08-24 04:29:18,263 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 476 flow [2023-08-24 04:29:18,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:18,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:18,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:18,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 04:29:18,264 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:18,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:18,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1213258613, now seen corresponding path program 3 times [2023-08-24 04:29:18,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:18,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336478034] [2023-08-24 04:29:18,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:18,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:18,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:18,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336478034] [2023-08-24 04:29:18,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336478034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:18,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:18,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-24 04:29:18,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913425167] [2023-08-24 04:29:18,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:18,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 04:29:18,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:18,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 04:29:18,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-08-24 04:29:18,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 473 [2023-08-24 04:29:18,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 476 flow. Second operand has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:18,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:18,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 473 [2023-08-24 04:29:18,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:19,614 INFO L124 PetriNetUnfolderBase]: 1791/3168 cut-off events. [2023-08-24 04:29:19,616 INFO L125 PetriNetUnfolderBase]: For 792/792 co-relation queries the response was YES. [2023-08-24 04:29:19,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7229 conditions, 3168 events. 1791/3168 cut-off events. For 792/792 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 14388 event pairs, 515 based on Foata normal form. 0/2741 useless extension candidates. Maximal degree in co-relation 7207. Up to 1744 conditions per place. [2023-08-24 04:29:19,634 INFO L140 encePairwiseOnDemand]: 462/473 looper letters, 94 selfloop transitions, 28 changer transitions 9/140 dead transitions. [2023-08-24 04:29:19,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 140 transitions, 859 flow [2023-08-24 04:29:19,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 04:29:19,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 04:29:19,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1642 transitions. [2023-08-24 04:29:19,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571764153159505 [2023-08-24 04:29:19,639 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1642 transitions. [2023-08-24 04:29:19,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1642 transitions. [2023-08-24 04:29:19,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:19,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1642 transitions. [2023-08-24 04:29:19,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.44444444444446) internal successors, (1642), 9 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:19,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:19,647 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:19,648 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 476 flow. Second operand 9 states and 1642 transitions. [2023-08-24 04:29:19,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 140 transitions, 859 flow [2023-08-24 04:29:19,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 140 transitions, 822 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-24 04:29:19,654 INFO L231 Difference]: Finished difference. Result has 105 places, 90 transitions, 514 flow [2023-08-24 04:29:19,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=514, PETRI_PLACES=105, PETRI_TRANSITIONS=90} [2023-08-24 04:29:19,655 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 42 predicate places. [2023-08-24 04:29:19,655 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 90 transitions, 514 flow [2023-08-24 04:29:19,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:19,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:19,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:19,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 04:29:19,656 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:19,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:19,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1209251243, now seen corresponding path program 4 times [2023-08-24 04:29:19,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:19,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051005954] [2023-08-24 04:29:19,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:19,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:20,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:20,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051005954] [2023-08-24 04:29:20,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051005954] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:20,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:20,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-24 04:29:20,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546278509] [2023-08-24 04:29:20,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:20,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 04:29:20,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:20,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 04:29:20,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-24 04:29:20,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 473 [2023-08-24 04:29:20,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 90 transitions, 514 flow. Second operand has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:20,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:20,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 473 [2023-08-24 04:29:20,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:21,093 INFO L124 PetriNetUnfolderBase]: 1778/3137 cut-off events. [2023-08-24 04:29:21,093 INFO L125 PetriNetUnfolderBase]: For 925/925 co-relation queries the response was YES. [2023-08-24 04:29:21,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7262 conditions, 3137 events. 1778/3137 cut-off events. For 925/925 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14151 event pairs, 504 based on Foata normal form. 0/2721 useless extension candidates. Maximal degree in co-relation 7239. Up to 1744 conditions per place. [2023-08-24 04:29:21,113 INFO L140 encePairwiseOnDemand]: 463/473 looper letters, 92 selfloop transitions, 28 changer transitions 10/138 dead transitions. [2023-08-24 04:29:21,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 138 transitions, 881 flow [2023-08-24 04:29:21,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 04:29:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 04:29:21,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1640 transitions. [2023-08-24 04:29:21,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38524782710829225 [2023-08-24 04:29:21,118 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1640 transitions. [2023-08-24 04:29:21,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1640 transitions. [2023-08-24 04:29:21,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:21,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1640 transitions. [2023-08-24 04:29:21,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.22222222222223) internal successors, (1640), 9 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:21,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:21,127 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:21,127 INFO L175 Difference]: Start difference. First operand has 105 places, 90 transitions, 514 flow. Second operand 9 states and 1640 transitions. [2023-08-24 04:29:21,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 138 transitions, 881 flow [2023-08-24 04:29:21,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 138 transitions, 848 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-24 04:29:21,134 INFO L231 Difference]: Finished difference. Result has 105 places, 88 transitions, 529 flow [2023-08-24 04:29:21,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=529, PETRI_PLACES=105, PETRI_TRANSITIONS=88} [2023-08-24 04:29:21,135 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 42 predicate places. [2023-08-24 04:29:21,136 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 88 transitions, 529 flow [2023-08-24 04:29:21,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:21,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:21,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:21,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 04:29:21,137 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:21,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:21,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1942684503, now seen corresponding path program 1 times [2023-08-24 04:29:21,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:21,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867635017] [2023-08-24 04:29:21,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:21,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:21,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:21,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:21,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867635017] [2023-08-24 04:29:21,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867635017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:21,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:21,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 04:29:21,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392072566] [2023-08-24 04:29:21,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:21,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 04:29:21,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:21,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 04:29:21,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 04:29:21,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 473 [2023-08-24 04:29:21,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 88 transitions, 529 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:21,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:21,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 473 [2023-08-24 04:29:21,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:21,443 INFO L124 PetriNetUnfolderBase]: 1119/2092 cut-off events. [2023-08-24 04:29:21,444 INFO L125 PetriNetUnfolderBase]: For 919/919 co-relation queries the response was YES. [2023-08-24 04:29:21,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5165 conditions, 2092 events. 1119/2092 cut-off events. For 919/919 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9421 event pairs, 278 based on Foata normal form. 2/1928 useless extension candidates. Maximal degree in co-relation 5142. Up to 1502 conditions per place. [2023-08-24 04:29:21,456 INFO L140 encePairwiseOnDemand]: 467/473 looper letters, 80 selfloop transitions, 6 changer transitions 1/100 dead transitions. [2023-08-24 04:29:21,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 100 transitions, 743 flow [2023-08-24 04:29:21,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 04:29:21,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 04:29:21,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 760 transitions. [2023-08-24 04:29:21,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355884425651868 [2023-08-24 04:29:21,459 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 760 transitions. [2023-08-24 04:29:21,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 760 transitions. [2023-08-24 04:29:21,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:21,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 760 transitions. [2023-08-24 04:29:21,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:21,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:21,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:21,463 INFO L175 Difference]: Start difference. First operand has 105 places, 88 transitions, 529 flow. Second operand 3 states and 760 transitions. [2023-08-24 04:29:21,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 100 transitions, 743 flow [2023-08-24 04:29:21,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 685 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-24 04:29:21,470 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 483 flow [2023-08-24 04:29:21,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=483, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2023-08-24 04:29:21,471 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 36 predicate places. [2023-08-24 04:29:21,471 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 483 flow [2023-08-24 04:29:21,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:21,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:21,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:21,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 04:29:21,472 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:21,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:21,472 INFO L85 PathProgramCache]: Analyzing trace with hash 272642884, now seen corresponding path program 1 times [2023-08-24 04:29:21,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:21,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057585919] [2023-08-24 04:29:21,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:21,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:22,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:22,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057585919] [2023-08-24 04:29:22,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057585919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:22,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:22,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-24 04:29:22,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609228152] [2023-08-24 04:29:22,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:22,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 04:29:22,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:22,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 04:29:22,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-24 04:29:22,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-08-24 04:29:22,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 483 flow. Second operand has 13 states, 13 states have (on average 176.69230769230768) internal successors, (2297), 13 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:22,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:22,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-08-24 04:29:22,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:23,206 INFO L124 PetriNetUnfolderBase]: 1155/2163 cut-off events. [2023-08-24 04:29:23,206 INFO L125 PetriNetUnfolderBase]: For 778/780 co-relation queries the response was YES. [2023-08-24 04:29:23,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5325 conditions, 2163 events. 1155/2163 cut-off events. For 778/780 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9844 event pairs, 500 based on Foata normal form. 0/2080 useless extension candidates. Maximal degree in co-relation 5302. Up to 1247 conditions per place. [2023-08-24 04:29:23,221 INFO L140 encePairwiseOnDemand]: 457/473 looper letters, 108 selfloop transitions, 31 changer transitions 12/159 dead transitions. [2023-08-24 04:29:23,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 159 transitions, 976 flow [2023-08-24 04:29:23,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 04:29:23,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 04:29:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2221 transitions. [2023-08-24 04:29:23,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3912966878083157 [2023-08-24 04:29:23,227 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2221 transitions. [2023-08-24 04:29:23,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2221 transitions. [2023-08-24 04:29:23,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:23,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2221 transitions. [2023-08-24 04:29:23,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 185.08333333333334) internal successors, (2221), 12 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:23,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 473.0) internal successors, (6149), 13 states have internal predecessors, (6149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:23,240 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 473.0) internal successors, (6149), 13 states have internal predecessors, (6149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:23,240 INFO L175 Difference]: Start difference. First operand has 99 places, 88 transitions, 483 flow. Second operand 12 states and 2221 transitions. [2023-08-24 04:29:23,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 159 transitions, 976 flow [2023-08-24 04:29:23,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 159 transitions, 966 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 04:29:23,247 INFO L231 Difference]: Finished difference. Result has 113 places, 97 transitions, 618 flow [2023-08-24 04:29:23,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=618, PETRI_PLACES=113, PETRI_TRANSITIONS=97} [2023-08-24 04:29:23,248 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 50 predicate places. [2023-08-24 04:29:23,248 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 97 transitions, 618 flow [2023-08-24 04:29:23,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 176.69230769230768) internal successors, (2297), 13 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:23,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:23,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:23,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-24 04:29:23,250 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:23,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:23,250 INFO L85 PathProgramCache]: Analyzing trace with hash -54871982, now seen corresponding path program 2 times [2023-08-24 04:29:23,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:23,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447690150] [2023-08-24 04:29:23,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:23,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:25,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:25,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:25,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447690150] [2023-08-24 04:29:25,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447690150] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:25,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:25,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-08-24 04:29:25,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269020236] [2023-08-24 04:29:25,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:25,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 04:29:25,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:25,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 04:29:25,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-08-24 04:29:25,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 473 [2023-08-24 04:29:25,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 97 transitions, 618 flow. Second operand has 17 states, 17 states have (on average 174.05882352941177) internal successors, (2959), 17 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:25,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:25,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 473 [2023-08-24 04:29:25,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:26,174 INFO L124 PetriNetUnfolderBase]: 1687/3169 cut-off events. [2023-08-24 04:29:26,174 INFO L125 PetriNetUnfolderBase]: For 1108/1112 co-relation queries the response was YES. [2023-08-24 04:29:26,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7916 conditions, 3169 events. 1687/3169 cut-off events. For 1108/1112 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 15702 event pairs, 284 based on Foata normal form. 0/3083 useless extension candidates. Maximal degree in co-relation 7889. Up to 1008 conditions per place. [2023-08-24 04:29:26,195 INFO L140 encePairwiseOnDemand]: 458/473 looper letters, 155 selfloop transitions, 31 changer transitions 7/201 dead transitions. [2023-08-24 04:29:26,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 201 transitions, 1283 flow [2023-08-24 04:29:26,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 04:29:26,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 04:29:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2399 transitions. [2023-08-24 04:29:26,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3901447389819483 [2023-08-24 04:29:26,201 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2399 transitions. [2023-08-24 04:29:26,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2399 transitions. [2023-08-24 04:29:26,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:26,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2399 transitions. [2023-08-24 04:29:26,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 184.53846153846155) internal successors, (2399), 13 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:26,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:26,215 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:26,215 INFO L175 Difference]: Start difference. First operand has 113 places, 97 transitions, 618 flow. Second operand 13 states and 2399 transitions. [2023-08-24 04:29:26,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 201 transitions, 1283 flow [2023-08-24 04:29:26,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 201 transitions, 1224 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-08-24 04:29:26,225 INFO L231 Difference]: Finished difference. Result has 123 places, 107 transitions, 707 flow [2023-08-24 04:29:26,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=707, PETRI_PLACES=123, PETRI_TRANSITIONS=107} [2023-08-24 04:29:26,226 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 60 predicate places. [2023-08-24 04:29:26,226 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 107 transitions, 707 flow [2023-08-24 04:29:26,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 174.05882352941177) internal successors, (2959), 17 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:26,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:26,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:26,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-24 04:29:26,227 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:26,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:26,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1056373008, now seen corresponding path program 1 times [2023-08-24 04:29:26,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:26,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210217273] [2023-08-24 04:29:26,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:26,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:27,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:27,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210217273] [2023-08-24 04:29:27,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210217273] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:27,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:27,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-24 04:29:27,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996685766] [2023-08-24 04:29:27,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:27,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 04:29:27,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:27,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 04:29:27,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-24 04:29:27,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-08-24 04:29:27,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 107 transitions, 707 flow. Second operand has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:27,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:27,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-08-24 04:29:27,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:28,000 INFO L124 PetriNetUnfolderBase]: 1701/3222 cut-off events. [2023-08-24 04:29:28,000 INFO L125 PetriNetUnfolderBase]: For 1780/1780 co-relation queries the response was YES. [2023-08-24 04:29:28,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8450 conditions, 3222 events. 1701/3222 cut-off events. For 1780/1780 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 16132 event pairs, 382 based on Foata normal form. 9/3156 useless extension candidates. Maximal degree in co-relation 8418. Up to 1578 conditions per place. [2023-08-24 04:29:28,017 INFO L140 encePairwiseOnDemand]: 457/473 looper letters, 118 selfloop transitions, 37 changer transitions 13/176 dead transitions. [2023-08-24 04:29:28,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 176 transitions, 1228 flow [2023-08-24 04:29:28,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 04:29:28,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 04:29:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2397 transitions. [2023-08-24 04:29:28,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38981948284273865 [2023-08-24 04:29:28,022 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2397 transitions. [2023-08-24 04:29:28,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2397 transitions. [2023-08-24 04:29:28,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:28,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2397 transitions. [2023-08-24 04:29:28,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 184.3846153846154) internal successors, (2397), 13 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:28,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:28,037 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:28,037 INFO L175 Difference]: Start difference. First operand has 123 places, 107 transitions, 707 flow. Second operand 13 states and 2397 transitions. [2023-08-24 04:29:28,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 176 transitions, 1228 flow [2023-08-24 04:29:28,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 176 transitions, 1187 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-24 04:29:28,049 INFO L231 Difference]: Finished difference. Result has 133 places, 111 transitions, 809 flow [2023-08-24 04:29:28,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=809, PETRI_PLACES=133, PETRI_TRANSITIONS=111} [2023-08-24 04:29:28,051 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 70 predicate places. [2023-08-24 04:29:28,051 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 111 transitions, 809 flow [2023-08-24 04:29:28,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:28,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:28,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:28,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-24 04:29:28,052 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:28,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash -785537338, now seen corresponding path program 2 times [2023-08-24 04:29:28,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:28,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24405875] [2023-08-24 04:29:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:28,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:28,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:28,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24405875] [2023-08-24 04:29:28,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24405875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:28,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:28,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-24 04:29:28,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906451101] [2023-08-24 04:29:28,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:28,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 04:29:28,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:28,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 04:29:28,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-24 04:29:28,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-08-24 04:29:28,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 111 transitions, 809 flow. Second operand has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:28,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:28,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-08-24 04:29:28,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:29,638 INFO L124 PetriNetUnfolderBase]: 1717/3252 cut-off events. [2023-08-24 04:29:29,638 INFO L125 PetriNetUnfolderBase]: For 3000/3000 co-relation queries the response was YES. [2023-08-24 04:29:29,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8994 conditions, 3252 events. 1717/3252 cut-off events. For 3000/3000 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 16403 event pairs, 434 based on Foata normal form. 7/3184 useless extension candidates. Maximal degree in co-relation 8958. Up to 1555 conditions per place. [2023-08-24 04:29:29,660 INFO L140 encePairwiseOnDemand]: 457/473 looper letters, 121 selfloop transitions, 36 changer transitions 13/178 dead transitions. [2023-08-24 04:29:29,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 178 transitions, 1325 flow [2023-08-24 04:29:29,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 04:29:29,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 04:29:29,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2396 transitions. [2023-08-24 04:29:29,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38965685477313383 [2023-08-24 04:29:29,664 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2396 transitions. [2023-08-24 04:29:29,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2396 transitions. [2023-08-24 04:29:29,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:29,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2396 transitions. [2023-08-24 04:29:29,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 184.30769230769232) internal successors, (2396), 13 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:29,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:29,675 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:29,675 INFO L175 Difference]: Start difference. First operand has 133 places, 111 transitions, 809 flow. Second operand 13 states and 2396 transitions. [2023-08-24 04:29:29,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 178 transitions, 1325 flow [2023-08-24 04:29:29,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 178 transitions, 1261 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-24 04:29:29,691 INFO L231 Difference]: Finished difference. Result has 139 places, 113 transitions, 867 flow [2023-08-24 04:29:29,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=867, PETRI_PLACES=139, PETRI_TRANSITIONS=113} [2023-08-24 04:29:29,691 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 76 predicate places. [2023-08-24 04:29:29,691 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 113 transitions, 867 flow [2023-08-24 04:29:29,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:29,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:29,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:29,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-24 04:29:29,693 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:29,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:29,693 INFO L85 PathProgramCache]: Analyzing trace with hash -224439540, now seen corresponding path program 3 times [2023-08-24 04:29:29,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:29,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867670424] [2023-08-24 04:29:29,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:29,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:30,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:30,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:30,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867670424] [2023-08-24 04:29:30,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867670424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:30,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:30,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-24 04:29:30,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199363722] [2023-08-24 04:29:30,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:30,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 04:29:30,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:30,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 04:29:30,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-08-24 04:29:30,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-08-24 04:29:30,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 113 transitions, 867 flow. Second operand has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:30,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:30,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-08-24 04:29:30,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:31,492 INFO L124 PetriNetUnfolderBase]: 1423/2670 cut-off events. [2023-08-24 04:29:31,492 INFO L125 PetriNetUnfolderBase]: For 3329/3334 co-relation queries the response was YES. [2023-08-24 04:29:31,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7684 conditions, 2670 events. 1423/2670 cut-off events. For 3329/3334 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12562 event pairs, 405 based on Foata normal form. 7/2607 useless extension candidates. Maximal degree in co-relation 7646. Up to 1091 conditions per place. [2023-08-24 04:29:31,512 INFO L140 encePairwiseOnDemand]: 457/473 looper letters, 121 selfloop transitions, 36 changer transitions 13/178 dead transitions. [2023-08-24 04:29:31,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 178 transitions, 1362 flow [2023-08-24 04:29:31,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 04:29:31,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 04:29:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2399 transitions. [2023-08-24 04:29:31,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3901447389819483 [2023-08-24 04:29:31,516 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2399 transitions. [2023-08-24 04:29:31,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2399 transitions. [2023-08-24 04:29:31,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:31,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2399 transitions. [2023-08-24 04:29:31,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 184.53846153846155) internal successors, (2399), 13 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:31,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:31,526 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:31,526 INFO L175 Difference]: Start difference. First operand has 139 places, 113 transitions, 867 flow. Second operand 13 states and 2399 transitions. [2023-08-24 04:29:31,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 178 transitions, 1362 flow [2023-08-24 04:29:31,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 178 transitions, 1274 flow, removed 2 selfloop flow, removed 13 redundant places. [2023-08-24 04:29:31,542 INFO L231 Difference]: Finished difference. Result has 140 places, 111 transitions, 870 flow [2023-08-24 04:29:31,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=870, PETRI_PLACES=140, PETRI_TRANSITIONS=111} [2023-08-24 04:29:31,543 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 77 predicate places. [2023-08-24 04:29:31,543 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 111 transitions, 870 flow [2023-08-24 04:29:31,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:31,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:31,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:31,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-24 04:29:31,544 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:31,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:31,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1236496857, now seen corresponding path program 1 times [2023-08-24 04:29:31,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:31,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67139986] [2023-08-24 04:29:31,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:31,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:33,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:33,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67139986] [2023-08-24 04:29:33,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67139986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:33,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:33,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-08-24 04:29:33,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474099860] [2023-08-24 04:29:33,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:33,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-24 04:29:33,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:33,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-24 04:29:33,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-08-24 04:29:33,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 473 [2023-08-24 04:29:33,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 111 transitions, 870 flow. Second operand has 18 states, 18 states have (on average 173.0) internal successors, (3114), 18 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:33,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:33,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 473 [2023-08-24 04:29:33,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:34,330 INFO L124 PetriNetUnfolderBase]: 1589/2991 cut-off events. [2023-08-24 04:29:34,331 INFO L125 PetriNetUnfolderBase]: For 3696/3701 co-relation queries the response was YES. [2023-08-24 04:29:34,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8457 conditions, 2991 events. 1589/2991 cut-off events. For 3696/3701 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14197 event pairs, 302 based on Foata normal form. 8/2920 useless extension candidates. Maximal degree in co-relation 8419. Up to 861 conditions per place. [2023-08-24 04:29:34,350 INFO L140 encePairwiseOnDemand]: 457/473 looper letters, 144 selfloop transitions, 34 changer transitions 10/196 dead transitions. [2023-08-24 04:29:34,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 196 transitions, 1455 flow [2023-08-24 04:29:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 04:29:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 04:29:34,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2374 transitions. [2023-08-24 04:29:34,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38607903724182796 [2023-08-24 04:29:34,354 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2374 transitions. [2023-08-24 04:29:34,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2374 transitions. [2023-08-24 04:29:34,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:34,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2374 transitions. [2023-08-24 04:29:34,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:34,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:34,365 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:34,365 INFO L175 Difference]: Start difference. First operand has 140 places, 111 transitions, 870 flow. Second operand 13 states and 2374 transitions. [2023-08-24 04:29:34,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 196 transitions, 1455 flow [2023-08-24 04:29:34,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 196 transitions, 1377 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-08-24 04:29:34,381 INFO L231 Difference]: Finished difference. Result has 144 places, 116 transitions, 906 flow [2023-08-24 04:29:34,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=906, PETRI_PLACES=144, PETRI_TRANSITIONS=116} [2023-08-24 04:29:34,382 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 81 predicate places. [2023-08-24 04:29:34,382 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 116 transitions, 906 flow [2023-08-24 04:29:34,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 173.0) internal successors, (3114), 18 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:34,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:34,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:34,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-24 04:29:34,383 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:34,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:34,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1142379959, now seen corresponding path program 1 times [2023-08-24 04:29:34,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:34,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427935874] [2023-08-24 04:29:34,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:34,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:36,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:36,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427935874] [2023-08-24 04:29:36,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427935874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:36,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:36,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-08-24 04:29:36,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068073286] [2023-08-24 04:29:36,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:36,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-24 04:29:36,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:36,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-24 04:29:36,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2023-08-24 04:29:36,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 473 [2023-08-24 04:29:36,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 116 transitions, 906 flow. Second operand has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:36,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:36,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 473 [2023-08-24 04:29:36,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:39,246 INFO L124 PetriNetUnfolderBase]: 1890/3589 cut-off events. [2023-08-24 04:29:39,247 INFO L125 PetriNetUnfolderBase]: For 4289/4295 co-relation queries the response was YES. [2023-08-24 04:29:39,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10272 conditions, 3589 events. 1890/3589 cut-off events. For 4289/4295 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18092 event pairs, 750 based on Foata normal form. 82/3580 useless extension candidates. Maximal degree in co-relation 10231. Up to 2761 conditions per place. [2023-08-24 04:29:39,268 INFO L140 encePairwiseOnDemand]: 446/473 looper letters, 176 selfloop transitions, 57 changer transitions 32/273 dead transitions. [2023-08-24 04:29:39,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 273 transitions, 2034 flow [2023-08-24 04:29:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-24 04:29:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-24 04:29:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4801 transitions. [2023-08-24 04:29:39,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31719080338266387 [2023-08-24 04:29:39,277 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4801 transitions. [2023-08-24 04:29:39,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4801 transitions. [2023-08-24 04:29:39,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:39,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4801 transitions. [2023-08-24 04:29:39,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 150.03125) internal successors, (4801), 32 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) [2023-08-24 04:29:39,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 473.0) internal successors, (15609), 33 states have internal predecessors, (15609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:39,299 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 473.0) internal successors, (15609), 33 states have internal predecessors, (15609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:39,299 INFO L175 Difference]: Start difference. First operand has 144 places, 116 transitions, 906 flow. Second operand 32 states and 4801 transitions. [2023-08-24 04:29:39,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 273 transitions, 2034 flow [2023-08-24 04:29:39,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 273 transitions, 1949 flow, removed 1 selfloop flow, removed 9 redundant places. [2023-08-24 04:29:39,322 INFO L231 Difference]: Finished difference. Result has 192 places, 171 transitions, 1437 flow [2023-08-24 04:29:39,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1437, PETRI_PLACES=192, PETRI_TRANSITIONS=171} [2023-08-24 04:29:39,323 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 129 predicate places. [2023-08-24 04:29:39,323 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 171 transitions, 1437 flow [2023-08-24 04:29:39,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:39,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:39,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:39,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-24 04:29:39,325 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:39,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:39,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1972154307, now seen corresponding path program 2 times [2023-08-24 04:29:39,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:39,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265008782] [2023-08-24 04:29:39,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:39,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:42,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:42,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265008782] [2023-08-24 04:29:42,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265008782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:42,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:42,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-08-24 04:29:42,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261427446] [2023-08-24 04:29:42,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:42,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-24 04:29:42,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:42,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-24 04:29:42,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2023-08-24 04:29:42,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 473 [2023-08-24 04:29:42,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 171 transitions, 1437 flow. Second operand has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:42,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:42,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 473 [2023-08-24 04:29:42,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:45,523 INFO L124 PetriNetUnfolderBase]: 2111/4050 cut-off events. [2023-08-24 04:29:45,523 INFO L125 PetriNetUnfolderBase]: For 53559/53565 co-relation queries the response was YES. [2023-08-24 04:29:45,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18669 conditions, 4050 events. 2111/4050 cut-off events. For 53559/53565 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 21493 event pairs, 650 based on Foata normal form. 86/4120 useless extension candidates. Maximal degree in co-relation 18602. Up to 3128 conditions per place. [2023-08-24 04:29:45,549 INFO L140 encePairwiseOnDemand]: 446/473 looper letters, 223 selfloop transitions, 58 changer transitions 33/322 dead transitions. [2023-08-24 04:29:45,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 322 transitions, 3052 flow [2023-08-24 04:29:45,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-24 04:29:45,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-24 04:29:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4790 transitions. [2023-08-24 04:29:45,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31646405919661735 [2023-08-24 04:29:45,557 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4790 transitions. [2023-08-24 04:29:45,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4790 transitions. [2023-08-24 04:29:45,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:45,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4790 transitions. [2023-08-24 04:29:45,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 149.6875) internal successors, (4790), 32 states have internal predecessors, (4790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:45,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 473.0) internal successors, (15609), 33 states have internal predecessors, (15609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:45,578 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 473.0) internal successors, (15609), 33 states have internal predecessors, (15609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:45,578 INFO L175 Difference]: Start difference. First operand has 192 places, 171 transitions, 1437 flow. Second operand 32 states and 4790 transitions. [2023-08-24 04:29:45,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 322 transitions, 3052 flow [2023-08-24 04:29:45,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 322 transitions, 3034 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-24 04:29:45,665 INFO L231 Difference]: Finished difference. Result has 245 places, 220 transitions, 2179 flow [2023-08-24 04:29:45,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2179, PETRI_PLACES=245, PETRI_TRANSITIONS=220} [2023-08-24 04:29:45,666 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 182 predicate places. [2023-08-24 04:29:45,666 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 220 transitions, 2179 flow [2023-08-24 04:29:45,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:45,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:45,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:45,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-24 04:29:45,667 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:45,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:45,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1706648059, now seen corresponding path program 3 times [2023-08-24 04:29:45,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:45,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375562584] [2023-08-24 04:29:45,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:45,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:47,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:47,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:47,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375562584] [2023-08-24 04:29:47,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375562584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:47,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:47,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-08-24 04:29:47,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018312849] [2023-08-24 04:29:47,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:47,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-24 04:29:47,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:47,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-24 04:29:47,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2023-08-24 04:29:47,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 473 [2023-08-24 04:29:47,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 220 transitions, 2179 flow. Second operand has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:47,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:47,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 473 [2023-08-24 04:29:47,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:50,560 INFO L124 PetriNetUnfolderBase]: 2319/4474 cut-off events. [2023-08-24 04:29:50,560 INFO L125 PetriNetUnfolderBase]: For 184733/184751 co-relation queries the response was YES. [2023-08-24 04:29:50,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27207 conditions, 4474 events. 2319/4474 cut-off events. For 184733/184751 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 24650 event pairs, 742 based on Foata normal form. 92/4549 useless extension candidates. Maximal degree in co-relation 27113. Up to 3321 conditions per place. [2023-08-24 04:29:50,597 INFO L140 encePairwiseOnDemand]: 447/473 looper letters, 257 selfloop transitions, 71 changer transitions 35/371 dead transitions. [2023-08-24 04:29:50,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 371 transitions, 4400 flow [2023-08-24 04:29:50,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-24 04:29:50,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-24 04:29:50,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 4941 transitions. [2023-08-24 04:29:50,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.316548145300788 [2023-08-24 04:29:50,603 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 4941 transitions. [2023-08-24 04:29:50,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 4941 transitions. [2023-08-24 04:29:50,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:50,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 4941 transitions. [2023-08-24 04:29:50,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 149.72727272727272) internal successors, (4941), 33 states have internal predecessors, (4941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:50,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 473.0) internal successors, (16082), 34 states have internal predecessors, (16082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:50,622 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 473.0) internal successors, (16082), 34 states have internal predecessors, (16082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:50,622 INFO L175 Difference]: Start difference. First operand has 245 places, 220 transitions, 2179 flow. Second operand 33 states and 4941 transitions. [2023-08-24 04:29:50,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 371 transitions, 4400 flow [2023-08-24 04:29:50,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 371 transitions, 4230 flow, removed 85 selfloop flow, removed 0 redundant places. [2023-08-24 04:29:50,797 INFO L231 Difference]: Finished difference. Result has 296 places, 266 transitions, 2907 flow [2023-08-24 04:29:50,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=2009, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2907, PETRI_PLACES=296, PETRI_TRANSITIONS=266} [2023-08-24 04:29:50,797 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 233 predicate places. [2023-08-24 04:29:50,798 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 266 transitions, 2907 flow [2023-08-24 04:29:50,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:50,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:50,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:50,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-24 04:29:50,799 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 04:29:50,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:50,799 INFO L85 PathProgramCache]: Analyzing trace with hash 963217069, now seen corresponding path program 4 times [2023-08-24 04:29:50,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:50,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671719808] [2023-08-24 04:29:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:50,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-08-24 04:42:13,897 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-24 04:42:13,900 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-24 04:42:13,901 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-24 04:42:13,902 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-24 04:42:13,920 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-24 04:42:13,921 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-24 04:42:13,922 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-24 04:42:13,922 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-24 04:42:13,923 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-24 04:42:13,923 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-24 04:42:13,923 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-24 04:42:13,924 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-24 04:42:13,924 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-24 04:42:13,925 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-24 04:42:13,925 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-08-24 04:42:13,928 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-24 04:42:13,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-24 04:42:13,928 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. [2023-08-24 04:42:13,930 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-24 04:42:13,937 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 [2023-08-24 04:42:13,947 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-24 04:42:13,947 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-24 04:42:13,947 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-08-24 04:42:13,947 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-24 04:42:13,947 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-24 04:42:13,948 INFO L445 BasicCegarLoop]: Path program histogram: [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:42:13,952 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 04:42:13,952 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 04:42:13,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 04:42:13 BasicIcfg [2023-08-24 04:42:13,954 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 04:42:13,954 INFO L158 Benchmark]: Toolchain (without parser) took 795101.82ms. Allocated memory was 373.3MB in the beginning and 7.0GB in the end (delta: 6.7GB). Free memory was 347.6MB in the beginning and 3.1GB in the end (delta: -2.7GB). Peak memory consumption was 6.8GB. Max. memory is 16.0GB. [2023-08-24 04:42:13,954 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 373.3MB. Free memory was 349.9MB in the beginning and 349.6MB in the end (delta: 249.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 04:42:13,955 INFO L158 Benchmark]: CACSL2BoogieTranslator took 625.40ms. Allocated memory is still 373.3MB. Free memory was 347.6MB in the beginning and 317.4MB in the end (delta: 30.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-24 04:42:13,955 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.38ms. Allocated memory is still 373.3MB. Free memory was 317.4MB in the beginning and 314.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-24 04:42:13,955 INFO L158 Benchmark]: Boogie Preprocessor took 38.43ms. Allocated memory is still 373.3MB. Free memory was 314.2MB in the beginning and 312.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 04:42:13,955 INFO L158 Benchmark]: RCFGBuilder took 488.08ms. Allocated memory is still 373.3MB. Free memory was 311.6MB in the beginning and 289.1MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-24 04:42:13,955 INFO L158 Benchmark]: TraceAbstraction took 793898.17ms. Allocated memory was 373.3MB in the beginning and 7.0GB in the end (delta: 6.7GB). Free memory was 288.0MB in the beginning and 3.1GB in the end (delta: -2.8GB). Peak memory consumption was 6.8GB. Max. memory is 16.0GB. [2023-08-24 04:42:13,956 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 373.3MB. Free memory was 349.9MB in the beginning and 349.6MB in the end (delta: 249.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 625.40ms. Allocated memory is still 373.3MB. Free memory was 347.6MB in the beginning and 317.4MB in the end (delta: 30.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.38ms. Allocated memory is still 373.3MB. Free memory was 317.4MB in the beginning and 314.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.43ms. Allocated memory is still 373.3MB. Free memory was 314.2MB in the beginning and 312.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 488.08ms. Allocated memory is still 373.3MB. Free memory was 311.6MB in the beginning and 289.1MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 793898.17ms. Allocated memory was 373.3MB in the beginning and 7.0GB in the end (delta: 6.7GB). Free memory was 288.0MB in the beginning and 3.1GB in the end (delta: -2.8GB). Peak memory consumption was 6.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 258]: Unsoundness Warning unspecified type, defaulting to int C: short [258] - GenericResultAtLocation [Line: 258]: Unsoundness Warning unspecified type, defaulting to int C: short [258] - GenericResultAtLocation [Line: 750]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [750] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.8s, 239 PlacesBefore, 63 PlacesAfterwards, 247 TransitionsBefore, 66 TransitionsAfterwards, 15864 CoEnabledTransitionPairs, 7 FixpointIterations, 60 TrivialSequentialCompositions, 125 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 17 ConcurrentYvCompositions, 5 ChoiceCompositions, 215 TotalNumberOfCompositions, 33075 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16387, independent: 15763, independent conditional: 0, independent unconditional: 15763, dependent: 624, dependent conditional: 0, dependent unconditional: 624, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8632, independent: 8496, independent conditional: 0, independent unconditional: 8496, dependent: 136, dependent conditional: 0, dependent unconditional: 136, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 16387, independent: 7267, independent conditional: 0, independent unconditional: 7267, dependent: 488, dependent conditional: 0, dependent unconditional: 488, unknown: 8632, unknown conditional: 0, unknown unconditional: 8632] , Statistics on independence cache: Total cache size (in pairs): 481, Positive cache size: 435, Positive conditional cache size: 0, Positive unconditional cache size: 435, Negative cache size: 46, Negative conditional cache size: 0, Negative unconditional cache size: 46, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1043]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. - TimeoutResultAtElement [Line: 1059]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. - TimeoutResultAtElement [Line: 1062]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. - TimeoutResultAtElement [Line: 1032]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 407 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 793.7s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 21.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2283 SdHoareTripleChecker+Valid, 8.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2283 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 7.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 339 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13606 IncrementalHoareTripleChecker+Invalid, 13945 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 339 mSolverCounterUnsat, 9 mSDtfsCounter, 13606 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 412 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1914 ImplicationChecksByTransitivity, 8.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2907occurred in iteration=22, InterpolantAutomatonStates: 256, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 21.0s InterpolantComputationTime, 544 NumberOfCodeBlocks, 544 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 522 ConstructedInterpolants, 0 QuantifiedInterpolants, 12517 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 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 [2023-08-24 04:42:14,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 !ENTRY org.eclipse.osgi 4 0 2023-08-24 04:42:14.219 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0cf165b6/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:190) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0cf165b6/.metadata/.log.