/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 PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread/stateful01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 09:36:11,765 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 09:36:11,849 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 [2023-08-27 09:36:11,852 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 09:36:11,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 09:36:11,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 09:36:11,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 09:36:11,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 09:36:11,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 09:36:11,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 09:36:11,874 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 09:36:11,875 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 09:36:11,875 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 09:36:11,875 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 09:36:11,876 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 09:36:11,876 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 09:36:11,876 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 09:36:11,877 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 09:36:11,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 09:36:11,877 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 09:36:11,878 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 09:36:11,881 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 09:36:11,881 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 09:36:11,882 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 09:36:11,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 09:36:11,885 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 09:36:11,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 09:36:11,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:36:11,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 09:36:11,886 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 09:36:11,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 09:36:11,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 09:36:11,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 09:36:11,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 09:36:11,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 09:36:11,888 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 09:36:12,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 09:36:12,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 09:36:12,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 09:36:12,236 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 09:36:12,236 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 09:36:12,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-1.i [2023-08-27 09:36:13,511 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 09:36:13,782 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 09:36:13,783 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i [2023-08-27 09:36:13,795 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f319d857/2ee55baf3eb54955bd8f0426eceb2e77/FLAG31255c6ad [2023-08-27 09:36:13,807 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f319d857/2ee55baf3eb54955bd8f0426eceb2e77 [2023-08-27 09:36:13,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 09:36:13,810 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 09:36:13,811 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 09:36:13,811 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 09:36:13,813 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 09:36:13,814 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:36:13" (1/1) ... [2023-08-27 09:36:13,815 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b22ee43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:13, skipping insertion in model container [2023-08-27 09:36:13,815 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:36:13" (1/1) ... [2023-08-27 09:36:13,865 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 09:36:14,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:36:14,191 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 09:36:14,222 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-27 09:36:14,224 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-27 09:36:14,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:36:14,289 INFO L206 MainTranslator]: Completed translation [2023-08-27 09:36:14,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:14 WrapperNode [2023-08-27 09:36:14,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 09:36:14,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 09:36:14,291 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 09:36:14,291 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 09:36:14,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:14" (1/1) ... [2023-08-27 09:36:14,324 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:14" (1/1) ... [2023-08-27 09:36:14,348 INFO L138 Inliner]: procedures = 168, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-08-27 09:36:14,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 09:36:14,349 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 09:36:14,350 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 09:36:14,350 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 09:36:14,357 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:14" (1/1) ... [2023-08-27 09:36:14,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:14" (1/1) ... [2023-08-27 09:36:14,373 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:14" (1/1) ... [2023-08-27 09:36:14,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:14" (1/1) ... [2023-08-27 09:36:14,377 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:14" (1/1) ... [2023-08-27 09:36:14,379 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:14" (1/1) ... [2023-08-27 09:36:14,380 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:14" (1/1) ... [2023-08-27 09:36:14,381 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:14" (1/1) ... [2023-08-27 09:36:14,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 09:36:14,384 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 09:36:14,384 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 09:36:14,384 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 09:36:14,394 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:14" (1/1) ... [2023-08-27 09:36:14,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:36:14,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:36:14,422 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) [2023-08-27 09:36:14,431 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 [2023-08-27 09:36:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 09:36:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 09:36:14,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 09:36:14,453 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 09:36:14,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 09:36:14,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 09:36:14,453 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 09:36:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 09:36:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 09:36:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 09:36:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 09:36:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 09:36:14,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 09:36:14,456 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 09:36:14,581 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 09:36:14,582 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 09:36:14,809 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 09:36:14,815 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 09:36:14,816 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 09:36:14,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:36:14 BoogieIcfgContainer [2023-08-27 09:36:14,818 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 09:36:14,819 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 09:36:14,820 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 09:36:14,822 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 09:36:14,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:36:13" (1/3) ... [2023-08-27 09:36:14,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3169ba42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:36:14, skipping insertion in model container [2023-08-27 09:36:14,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:14" (2/3) ... [2023-08-27 09:36:14,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3169ba42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:36:14, skipping insertion in model container [2023-08-27 09:36:14,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:36:14" (3/3) ... [2023-08-27 09:36:14,827 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2023-08-27 09:36:14,842 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 09:36:14,842 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 09:36:14,843 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 09:36:14,939 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 09:36:14,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 109 transitions, 234 flow [2023-08-27 09:36:15,010 INFO L124 PetriNetUnfolderBase]: 2/107 cut-off events. [2023-08-27 09:36:15,010 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:36:15,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 107 events. 2/107 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 94 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-08-27 09:36:15,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 109 transitions, 234 flow [2023-08-27 09:36:15,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 95 transitions, 202 flow [2023-08-27 09:36:15,020 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:36:15,028 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 95 transitions, 202 flow [2023-08-27 09:36:15,030 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 95 transitions, 202 flow [2023-08-27 09:36:15,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 95 transitions, 202 flow [2023-08-27 09:36:15,052 INFO L124 PetriNetUnfolderBase]: 0/95 cut-off events. [2023-08-27 09:36:15,052 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:36:15,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 0/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-27 09:36:15,054 INFO L119 LiptonReduction]: Number of co-enabled transitions 1516 [2023-08-27 09:36:18,079 INFO L134 LiptonReduction]: Checked pairs total: 6588 [2023-08-27 09:36:18,079 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-27 09:36:18,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:36:18,098 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;@1bde0c0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:36:18,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 09:36:18,102 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:36:18,102 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-27 09:36:18,102 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:36:18,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:18,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 09:36:18,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:36:18,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:18,107 INFO L85 PathProgramCache]: Analyzing trace with hash 11232720, now seen corresponding path program 1 times [2023-08-27 09:36:18,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:18,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362772521] [2023-08-27 09:36:18,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:18,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:18,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:18,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362772521] [2023-08-27 09:36:18,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362772521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:18,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:18,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 09:36:18,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282020148] [2023-08-27 09:36:18,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:18,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:36:18,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:18,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:36:18,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:36:18,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-27 09:36:18,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:18,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:18,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-27 09:36:18,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:18,540 INFO L124 PetriNetUnfolderBase]: 315/634 cut-off events. [2023-08-27 09:36:18,541 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-27 09:36:18,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 634 events. 315/634 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3060 event pairs, 103 based on Foata normal form. 0/508 useless extension candidates. Maximal degree in co-relation 1164. Up to 392 conditions per place. [2023-08-27 09:36:18,552 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 43 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2023-08-27 09:36:18,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 218 flow [2023-08-27 09:36:18,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:36:18,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:36:18,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-08-27 09:36:18,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6168582375478927 [2023-08-27 09:36:18,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-08-27 09:36:18,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-08-27 09:36:18,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:18,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-08-27 09:36:18,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:18,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:18,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:18,587 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 82 flow. Second operand 3 states and 322 transitions. [2023-08-27 09:36:18,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 218 flow [2023-08-27 09:36:18,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 206 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 09:36:18,594 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 94 flow [2023-08-27 09:36:18,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-08-27 09:36:18,602 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-27 09:36:18,602 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 94 flow [2023-08-27 09:36:18,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:18,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:18,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 09:36:18,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 09:36:18,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:36:18,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:18,604 INFO L85 PathProgramCache]: Analyzing trace with hash 11232768, now seen corresponding path program 1 times [2023-08-27 09:36:18,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:18,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525569291] [2023-08-27 09:36:18,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:18,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:18,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:18,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:18,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525569291] [2023-08-27 09:36:18,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525569291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:18,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:18,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 09:36:18,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772390233] [2023-08-27 09:36:18,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:18,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:36:18,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:18,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:36:18,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:36:18,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-27 09:36:18,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:18,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:18,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-27 09:36:18,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:18,791 INFO L124 PetriNetUnfolderBase]: 283/650 cut-off events. [2023-08-27 09:36:18,791 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2023-08-27 09:36:18,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 650 events. 283/650 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3281 event pairs, 103 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 414. Up to 419 conditions per place. [2023-08-27 09:36:18,796 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 43 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2023-08-27 09:36:18,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 228 flow [2023-08-27 09:36:18,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:36:18,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:36:18,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-08-27 09:36:18,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6168582375478927 [2023-08-27 09:36:18,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-08-27 09:36:18,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-08-27 09:36:18,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:18,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-08-27 09:36:18,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:18,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:18,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:18,803 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 94 flow. Second operand 3 states and 322 transitions. [2023-08-27 09:36:18,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 228 flow [2023-08-27 09:36:18,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 213 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 09:36:18,805 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 101 flow [2023-08-27 09:36:18,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-08-27 09:36:18,806 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-27 09:36:18,806 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 101 flow [2023-08-27 09:36:18,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:18,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:18,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:18,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 09:36:18,807 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:36:18,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:18,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1316659288, now seen corresponding path program 1 times [2023-08-27 09:36:18,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:18,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007153020] [2023-08-27 09:36:18,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:18,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:18,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:18,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007153020] [2023-08-27 09:36:18,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007153020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:18,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:18,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 09:36:18,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798561137] [2023-08-27 09:36:18,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:18,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:36:18,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:18,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:36:18,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:36:18,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-27 09:36:18,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:18,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:18,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-27 09:36:18,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:19,004 INFO L124 PetriNetUnfolderBase]: 319/616 cut-off events. [2023-08-27 09:36:19,005 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2023-08-27 09:36:19,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 616 events. 319/616 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2556 event pairs, 189 based on Foata normal form. 0/552 useless extension candidates. Maximal degree in co-relation 417. Up to 350 conditions per place. [2023-08-27 09:36:19,008 INFO L140 encePairwiseOnDemand]: 167/174 looper letters, 50 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-08-27 09:36:19,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 60 transitions, 271 flow [2023-08-27 09:36:19,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:36:19,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:36:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-08-27 09:36:19,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302681992337165 [2023-08-27 09:36:19,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-08-27 09:36:19,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-08-27 09:36:19,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:19,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-08-27 09:36:19,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,013 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,013 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 101 flow. Second operand 3 states and 329 transitions. [2023-08-27 09:36:19,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 60 transitions, 271 flow [2023-08-27 09:36:19,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:36:19,016 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 137 flow [2023-08-27 09:36:19,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-27 09:36:19,017 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-27 09:36:19,017 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 137 flow [2023-08-27 09:36:19,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:19,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:19,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 09:36:19,018 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:36:19,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:19,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1316659336, now seen corresponding path program 1 times [2023-08-27 09:36:19,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:19,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603137103] [2023-08-27 09:36:19,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:19,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:19,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:19,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603137103] [2023-08-27 09:36:19,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603137103] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:19,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:19,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 09:36:19,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404708935] [2023-08-27 09:36:19,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:19,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:36:19,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:19,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:36:19,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:36:19,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-27 09:36:19,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:19,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-27 09:36:19,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:19,182 INFO L124 PetriNetUnfolderBase]: 265/514 cut-off events. [2023-08-27 09:36:19,182 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-08-27 09:36:19,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 514 events. 265/514 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2004 event pairs, 185 based on Foata normal form. 36/544 useless extension candidates. Maximal degree in co-relation 596. Up to 347 conditions per place. [2023-08-27 09:36:19,186 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 40 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2023-08-27 09:36:19,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 245 flow [2023-08-27 09:36:19,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:36:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:36:19,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-08-27 09:36:19,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2023-08-27 09:36:19,187 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-08-27 09:36:19,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-08-27 09:36:19,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:19,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-08-27 09:36:19,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,191 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 137 flow. Second operand 3 states and 318 transitions. [2023-08-27 09:36:19,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 245 flow [2023-08-27 09:36:19,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 237 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 09:36:19,196 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 125 flow [2023-08-27 09:36:19,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-08-27 09:36:19,198 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-27 09:36:19,198 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 125 flow [2023-08-27 09:36:19,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:19,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:19,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 09:36:19,199 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:36:19,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:19,200 INFO L85 PathProgramCache]: Analyzing trace with hash -581276466, now seen corresponding path program 1 times [2023-08-27 09:36:19,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:19,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362382392] [2023-08-27 09:36:19,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:19,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:19,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:19,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362382392] [2023-08-27 09:36:19,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362382392] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:19,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:19,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:36:19,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682709496] [2023-08-27 09:36:19,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:19,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:36:19,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:19,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:36:19,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:36:19,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-27 09:36:19,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:19,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-27 09:36:19,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:19,431 INFO L124 PetriNetUnfolderBase]: 76/247 cut-off events. [2023-08-27 09:36:19,432 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-27 09:36:19,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 247 events. 76/247 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 996 event pairs, 18 based on Foata normal form. 40/287 useless extension candidates. Maximal degree in co-relation 308. Up to 136 conditions per place. [2023-08-27 09:36:19,437 INFO L140 encePairwiseOnDemand]: 166/174 looper letters, 24 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2023-08-27 09:36:19,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 201 flow [2023-08-27 09:36:19,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:36:19,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:36:19,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-08-27 09:36:19,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5593869731800766 [2023-08-27 09:36:19,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-08-27 09:36:19,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-08-27 09:36:19,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:19,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-08-27 09:36:19,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,442 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 125 flow. Second operand 3 states and 292 transitions. [2023-08-27 09:36:19,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 201 flow [2023-08-27 09:36:19,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:36:19,445 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 136 flow [2023-08-27 09:36:19,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-08-27 09:36:19,448 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-27 09:36:19,448 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 136 flow [2023-08-27 09:36:19,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:19,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:19,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 09:36:19,449 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:36:19,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:19,449 INFO L85 PathProgramCache]: Analyzing trace with hash -652308531, now seen corresponding path program 1 times [2023-08-27 09:36:19,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:19,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395504127] [2023-08-27 09:36:19,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:19,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:19,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:19,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395504127] [2023-08-27 09:36:19,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395504127] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:19,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:19,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:36:19,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670833473] [2023-08-27 09:36:19,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:19,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:36:19,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:19,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:36:19,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 09:36:19,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-27 09:36:19,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:19,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-27 09:36:19,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:19,594 INFO L124 PetriNetUnfolderBase]: 82/237 cut-off events. [2023-08-27 09:36:19,594 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-08-27 09:36:19,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 237 events. 82/237 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 862 event pairs, 64 based on Foata normal form. 6/241 useless extension candidates. Maximal degree in co-relation 295. Up to 177 conditions per place. [2023-08-27 09:36:19,596 INFO L140 encePairwiseOnDemand]: 169/174 looper letters, 28 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2023-08-27 09:36:19,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 201 flow [2023-08-27 09:36:19,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 09:36:19,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 09:36:19,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2023-08-27 09:36:19,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373563218390804 [2023-08-27 09:36:19,598 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 374 transitions. [2023-08-27 09:36:19,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 374 transitions. [2023-08-27 09:36:19,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:19,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 374 transitions. [2023-08-27 09:36:19,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,601 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,601 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 136 flow. Second operand 4 states and 374 transitions. [2023-08-27 09:36:19,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 201 flow [2023-08-27 09:36:19,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 193 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:36:19,603 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 130 flow [2023-08-27 09:36:19,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-08-27 09:36:19,604 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-08-27 09:36:19,604 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 130 flow [2023-08-27 09:36:19,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:19,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:19,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 09:36:19,605 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:36:19,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:19,605 INFO L85 PathProgramCache]: Analyzing trace with hash -253855623, now seen corresponding path program 1 times [2023-08-27 09:36:19,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:19,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826841320] [2023-08-27 09:36:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:19,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:19,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:19,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:19,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826841320] [2023-08-27 09:36:19,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826841320] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:19,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:19,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:36:19,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481749081] [2023-08-27 09:36:19,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:19,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:36:19,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:19,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:36:19,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:36:19,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-27 09:36:19,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:19,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-27 09:36:19,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:19,747 INFO L124 PetriNetUnfolderBase]: 77/236 cut-off events. [2023-08-27 09:36:19,747 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-08-27 09:36:19,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 236 events. 77/236 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 868 event pairs, 12 based on Foata normal form. 6/242 useless extension candidates. Maximal degree in co-relation 254. Up to 95 conditions per place. [2023-08-27 09:36:19,749 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 44 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-08-27 09:36:19,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 287 flow [2023-08-27 09:36:19,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:36:19,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:36:19,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 566 transitions. [2023-08-27 09:36:19,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5421455938697318 [2023-08-27 09:36:19,753 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 566 transitions. [2023-08-27 09:36:19,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 566 transitions. [2023-08-27 09:36:19,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:19,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 566 transitions. [2023-08-27 09:36:19,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.33333333333333) internal successors, (566), 6 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,757 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,758 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 130 flow. Second operand 6 states and 566 transitions. [2023-08-27 09:36:19,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 287 flow [2023-08-27 09:36:19,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 271 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 09:36:19,761 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 141 flow [2023-08-27 09:36:19,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2023-08-27 09:36:19,761 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-27 09:36:19,764 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 141 flow [2023-08-27 09:36:19,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:19,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:19,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 09:36:19,767 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:36:19,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2014908308, now seen corresponding path program 1 times [2023-08-27 09:36:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:19,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018285158] [2023-08-27 09:36:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:19,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:19,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:19,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018285158] [2023-08-27 09:36:19,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018285158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:19,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:19,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:36:19,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890406853] [2023-08-27 09:36:19,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:19,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:36:19,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:19,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:36:19,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 09:36:19,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-27 09:36:19,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:19,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-27 09:36:19,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:19,869 INFO L124 PetriNetUnfolderBase]: 75/218 cut-off events. [2023-08-27 09:36:19,869 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-08-27 09:36:19,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 218 events. 75/218 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 759 event pairs, 23 based on Foata normal form. 4/220 useless extension candidates. Maximal degree in co-relation 296. Up to 142 conditions per place. [2023-08-27 09:36:19,871 INFO L140 encePairwiseOnDemand]: 170/174 looper letters, 35 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-08-27 09:36:19,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 240 flow [2023-08-27 09:36:19,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 09:36:19,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 09:36:19,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2023-08-27 09:36:19,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5775862068965517 [2023-08-27 09:36:19,872 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 402 transitions. [2023-08-27 09:36:19,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 402 transitions. [2023-08-27 09:36:19,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:19,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 402 transitions. [2023-08-27 09:36:19,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,875 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,875 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 141 flow. Second operand 4 states and 402 transitions. [2023-08-27 09:36:19,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 240 flow [2023-08-27 09:36:19,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 232 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 09:36:19,877 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 137 flow [2023-08-27 09:36:19,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2023-08-27 09:36:19,878 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-27 09:36:19,878 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 137 flow [2023-08-27 09:36:19,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:19,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:19,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 09:36:19,879 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:36:19,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:19,879 INFO L85 PathProgramCache]: Analyzing trace with hash -336602244, now seen corresponding path program 1 times [2023-08-27 09:36:19,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:19,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101192080] [2023-08-27 09:36:19,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:19,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:19,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:19,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101192080] [2023-08-27 09:36:19,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101192080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:19,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:19,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:36:19,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451824351] [2023-08-27 09:36:19,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:19,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:36:19,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:19,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:36:19,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:36:19,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-27 09:36:19,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:19,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:19,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-27 09:36:19,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:20,031 INFO L124 PetriNetUnfolderBase]: 85/234 cut-off events. [2023-08-27 09:36:20,032 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-27 09:36:20,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 234 events. 85/234 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 780 event pairs, 41 based on Foata normal form. 4/238 useless extension candidates. Maximal degree in co-relation 324. Up to 84 conditions per place. [2023-08-27 09:36:20,033 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 49 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-08-27 09:36:20,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 59 transitions, 308 flow [2023-08-27 09:36:20,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:36:20,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:36:20,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 569 transitions. [2023-08-27 09:36:20,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450191570881227 [2023-08-27 09:36:20,035 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 569 transitions. [2023-08-27 09:36:20,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 569 transitions. [2023-08-27 09:36:20,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:20,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 569 transitions. [2023-08-27 09:36:20,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:20,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:20,039 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:20,039 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 137 flow. Second operand 6 states and 569 transitions. [2023-08-27 09:36:20,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 59 transitions, 308 flow [2023-08-27 09:36:20,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 290 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 09:36:20,041 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 143 flow [2023-08-27 09:36:20,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=143, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-27 09:36:20,041 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-08-27 09:36:20,042 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 143 flow [2023-08-27 09:36:20,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:20,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:20,042 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] [2023-08-27 09:36:20,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 09:36:20,042 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:36:20,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:20,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1737667436, now seen corresponding path program 1 times [2023-08-27 09:36:20,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:20,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461546753] [2023-08-27 09:36:20,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:20,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:20,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:20,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461546753] [2023-08-27 09:36:20,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461546753] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:20,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:20,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:36:20,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650034006] [2023-08-27 09:36:20,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:20,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:36:20,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:20,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:36:20,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:36:20,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-27 09:36:20,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:20,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:20,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-27 09:36:20,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:20,122 INFO L124 PetriNetUnfolderBase]: 81/224 cut-off events. [2023-08-27 09:36:20,122 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-27 09:36:20,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 224 events. 81/224 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 736 event pairs, 75 based on Foata normal form. 4/228 useless extension candidates. Maximal degree in co-relation 359. Up to 206 conditions per place. [2023-08-27 09:36:20,124 INFO L140 encePairwiseOnDemand]: 172/174 looper letters, 31 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-08-27 09:36:20,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 36 transitions, 203 flow [2023-08-27 09:36:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:36:20,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:36:20,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2023-08-27 09:36:20,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5727969348659003 [2023-08-27 09:36:20,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2023-08-27 09:36:20,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2023-08-27 09:36:20,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:20,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2023-08-27 09:36:20,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:20,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:20,127 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:20,127 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 143 flow. Second operand 3 states and 299 transitions. [2023-08-27 09:36:20,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 36 transitions, 203 flow [2023-08-27 09:36:20,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 36 transitions, 195 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 09:36:20,129 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 133 flow [2023-08-27 09:36:20,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-08-27 09:36:20,129 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-27 09:36:20,129 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 133 flow [2023-08-27 09:36:20,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:20,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:20,130 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] [2023-08-27 09:36:20,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 09:36:20,130 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:36:20,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:20,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1284518803, now seen corresponding path program 1 times [2023-08-27 09:36:20,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:20,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341077229] [2023-08-27 09:36:20,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:20,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:20,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:20,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341077229] [2023-08-27 09:36:20,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341077229] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:20,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:20,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:36:20,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134448515] [2023-08-27 09:36:20,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:20,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:36:20,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:20,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:36:20,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 09:36:20,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-27 09:36:20,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:20,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:20,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-27 09:36:20,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:20,260 INFO L124 PetriNetUnfolderBase]: 81/224 cut-off events. [2023-08-27 09:36:20,261 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-27 09:36:20,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 224 events. 81/224 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 739 event pairs, 47 based on Foata normal form. 2/226 useless extension candidates. Maximal degree in co-relation 548. Up to 94 conditions per place. [2023-08-27 09:36:20,262 INFO L140 encePairwiseOnDemand]: 169/174 looper letters, 41 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2023-08-27 09:36:20,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 263 flow [2023-08-27 09:36:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 09:36:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 09:36:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2023-08-27 09:36:20,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5847701149425287 [2023-08-27 09:36:20,264 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 407 transitions. [2023-08-27 09:36:20,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 407 transitions. [2023-08-27 09:36:20,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:20,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 407 transitions. [2023-08-27 09:36:20,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:20,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:20,267 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:20,267 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 133 flow. Second operand 4 states and 407 transitions. [2023-08-27 09:36:20,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 263 flow [2023-08-27 09:36:20,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:36:20,268 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 138 flow [2023-08-27 09:36:20,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-08-27 09:36:20,269 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-08-27 09:36:20,269 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 138 flow [2023-08-27 09:36:20,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:20,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:20,270 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] [2023-08-27 09:36:20,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 09:36:20,270 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:36:20,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:20,270 INFO L85 PathProgramCache]: Analyzing trace with hash 514616197, now seen corresponding path program 1 times [2023-08-27 09:36:20,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:20,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809053356] [2023-08-27 09:36:20,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:20,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:36:20,309 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 09:36:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:36:20,356 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 09:36:20,356 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 09:36:20,357 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (18 of 19 remaining) [2023-08-27 09:36:20,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-27 09:36:20,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-27 09:36:20,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 09:36:20,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 09:36:20,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 09:36:20,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 09:36:20,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 09:36:20,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-08-27 09:36:20,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 19 remaining) [2023-08-27 09:36:20,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-08-27 09:36:20,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 09:36:20,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 09:36:20,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 09:36:20,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 09:36:20,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 09:36:20,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 09:36:20,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 09:36:20,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 09:36:20,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 09:36:20,361 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:20,367 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 09:36:20,367 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 09:36:20,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:36:20 BasicIcfg [2023-08-27 09:36:20,422 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 09:36:20,422 INFO L158 Benchmark]: Toolchain (without parser) took 6612.45ms. Allocated memory was 358.6MB in the beginning and 432.0MB in the end (delta: 73.4MB). Free memory was 312.5MB in the beginning and 366.6MB in the end (delta: -54.0MB). Peak memory consumption was 20.4MB. Max. memory is 16.0GB. [2023-08-27 09:36:20,423 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 358.6MB. Free memory was 336.0MB in the beginning and 335.8MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:36:20,423 INFO L158 Benchmark]: CACSL2BoogieTranslator took 479.31ms. Allocated memory is still 358.6MB. Free memory was 312.5MB in the beginning and 293.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 09:36:20,423 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.43ms. Allocated memory is still 358.6MB. Free memory was 293.7MB in the beginning and 291.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:36:20,423 INFO L158 Benchmark]: Boogie Preprocessor took 33.76ms. Allocated memory is still 358.6MB. Free memory was 291.6MB in the beginning and 289.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:36:20,424 INFO L158 Benchmark]: RCFGBuilder took 434.09ms. Allocated memory is still 358.6MB. Free memory was 289.5MB in the beginning and 272.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 09:36:20,424 INFO L158 Benchmark]: TraceAbstraction took 5602.42ms. Allocated memory was 358.6MB in the beginning and 432.0MB in the end (delta: 73.4MB). Free memory was 271.6MB in the beginning and 366.6MB in the end (delta: -94.9MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:36:20,425 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 358.6MB. Free memory was 336.0MB in the beginning and 335.8MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 479.31ms. Allocated memory is still 358.6MB. Free memory was 312.5MB in the beginning and 293.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.43ms. Allocated memory is still 358.6MB. Free memory was 293.7MB in the beginning and 291.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.76ms. Allocated memory is still 358.6MB. Free memory was 291.6MB in the beginning and 289.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 434.09ms. Allocated memory is still 358.6MB. Free memory was 289.5MB in the beginning and 272.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 5602.42ms. Allocated memory was 358.6MB in the beginning and 432.0MB in the end (delta: 73.4MB). Free memory was 271.6MB in the beginning and 366.6MB in the end (delta: -94.9MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 257]: Unsoundness Warning unspecified type, defaulting to int C: short [257] - GenericResultAtLocation [Line: 257]: Unsoundness Warning unspecified type, defaulting to int C: short [257] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 102 PlacesBefore, 42 PlacesAfterwards, 95 TransitionsBefore, 35 TransitionsAfterwards, 1516 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 65 TotalNumberOfCompositions, 6588 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3448, independent: 3133, independent conditional: 0, independent unconditional: 3133, dependent: 315, dependent conditional: 0, dependent unconditional: 315, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 851, independent: 814, independent conditional: 0, independent unconditional: 814, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3448, independent: 2319, independent conditional: 0, independent unconditional: 2319, dependent: 278, dependent conditional: 0, dependent unconditional: 278, unknown: 851, unknown conditional: 0, unknown unconditional: 851] , Statistics on independence cache: Total cache size (in pairs): 210, Positive cache size: 189, Positive conditional cache size: 0, Positive unconditional cache size: 189, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 20]: assertion can be violated assertion can be violated We found a FailurePath: [L692] 0 pthread_mutex_t ma, mb; [L693] 0 int data1, data2; [L716] 0 pthread_t t1, t2; [L719] 0 data1 = 10 [L720] 0 data2 = 10 [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1, 0, thread1, 0)=-2, t1={6:0}, t2={5:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t2, 0, thread2, 0)=-1, t1={6:0}, t2={5:0}] [L697] 1 data1++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1++=10, data1=10, data2=10, ma={3:0}, mb={4:0}] [L723] 0 \read(t1) VAL [\read(t1)=-2, arg={0:0}, arg={0:0}, arg={0:0}, data1++=10, data1=10, data2=10, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L697] 1 data1++ [L707] 2 data1+=5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=10, ma={3:0}, mb={4:0}] [L700] 1 data2++ [L702] 1 return 0; [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-2, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L724] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L710] 2 data2-=6 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L712] 2 return 0; [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L725] COND TRUE 0 data1==16 && data2==5 [L727] CALL 0 reach_error() [L20] COND FALSE 0 !(0) [L20] 0 __assert_fail ("0", "stateful01-1.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] - UnprovableResult [Line: 697]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 710]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 710]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 154 locations, 19 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: 5.4s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 189 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 189 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 678 IncrementalHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 4 mSDtfsCounter, 678 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=9, InterpolantAutomatonStates: 42, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 313 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 proved your program to be incorrect! [2023-08-27 09:36:20,445 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 Received shutdown request...