/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 -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/weaver/popl20-more-buffer-series.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 01:10:53,241 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 01:10:53,305 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 01:10:53,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 01:10:53,308 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 01:10:53,335 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 01:10:53,336 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 01:10:53,336 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 01:10:53,337 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 01:10:53,341 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 01:10:53,341 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 01:10:53,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 01:10:53,341 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 01:10:53,342 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 01:10:53,342 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 01:10:53,342 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 01:10:53,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 01:10:53,343 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 01:10:53,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 01:10:53,343 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 01:10:53,343 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 01:10:53,344 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 01:10:53,344 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 01:10:53,345 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 01:10:53,345 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 01:10:53,345 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 01:10:53,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 01:10:53,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:10:53,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 01:10:53,346 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 01:10:53,346 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 01:10:53,346 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 01:10:53,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 01:10:53,347 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 01:10:53,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 01:10:53,347 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 01:10:53,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 01:10:53,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 01:10:53,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 01:10:53,607 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 01:10:53,608 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 01:10:53,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2023-08-27 01:10:54,523 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 01:10:54,714 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 01:10:54,714 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2023-08-27 01:10:54,724 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/978d7ab50/3ee0e29aed33487dace2e73df76d1972/FLAG1b0462ab5 [2023-08-27 01:10:54,732 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/978d7ab50/3ee0e29aed33487dace2e73df76d1972 [2023-08-27 01:10:54,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 01:10:54,734 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 01:10:54,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 01:10:54,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 01:10:54,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 01:10:54,737 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:10:54" (1/1) ... [2023-08-27 01:10:54,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c4b3d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:10:54, skipping insertion in model container [2023-08-27 01:10:54,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:10:54" (1/1) ... [2023-08-27 01:10:54,754 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 01:10:54,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:10:54,884 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 01:10:54,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:10:54,933 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:10:54,933 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:10:54,938 INFO L206 MainTranslator]: Completed translation [2023-08-27 01:10:54,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:10:54 WrapperNode [2023-08-27 01:10:54,938 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 01:10:54,939 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 01:10:54,939 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 01:10:54,939 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 01:10:54,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:10:54" (1/1) ... [2023-08-27 01:10:54,964 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:10:54" (1/1) ... [2023-08-27 01:10:54,998 INFO L138 Inliner]: procedures = 27, calls = 88, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 411 [2023-08-27 01:10:54,999 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 01:10:54,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 01:10:54,999 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 01:10:54,999 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 01:10:55,007 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:10:54" (1/1) ... [2023-08-27 01:10:55,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:10:54" (1/1) ... [2023-08-27 01:10:55,014 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:10:54" (1/1) ... [2023-08-27 01:10:55,015 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:10:54" (1/1) ... [2023-08-27 01:10:55,029 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:10:54" (1/1) ... [2023-08-27 01:10:55,042 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:10:54" (1/1) ... [2023-08-27 01:10:55,044 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:10:54" (1/1) ... [2023-08-27 01:10:55,045 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:10:54" (1/1) ... [2023-08-27 01:10:55,047 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 01:10:55,048 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 01:10:55,048 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 01:10:55,048 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 01:10:55,049 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:10:54" (1/1) ... [2023-08-27 01:10:55,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:10:55,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:10:55,072 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 01:10:55,092 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 01:10:55,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 01:10:55,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 01:10:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 01:10:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 01:10:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 01:10:55,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 01:10:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 01:10:55,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 01:10:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 01:10:55,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 01:10:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 01:10:55,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 01:10:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 01:10:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 01:10:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 01:10:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 01:10:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 01:10:55,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 01:10:55,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 01:10:55,104 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 01:10:55,184 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 01:10:55,185 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 01:10:55,554 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 01:10:55,905 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 01:10:55,905 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-27 01:10:55,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:10:55 BoogieIcfgContainer [2023-08-27 01:10:55,909 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 01:10:55,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 01:10:55,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 01:10:55,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 01:10:55,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:10:54" (1/3) ... [2023-08-27 01:10:55,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1120adf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:10:55, skipping insertion in model container [2023-08-27 01:10:55,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:10:54" (2/3) ... [2023-08-27 01:10:55,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1120adf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:10:55, skipping insertion in model container [2023-08-27 01:10:55,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:10:55" (3/3) ... [2023-08-27 01:10:55,915 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2023-08-27 01:10:55,927 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 01:10:55,928 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2023-08-27 01:10:55,928 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 01:10:56,083 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 01:10:56,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 295 transitions, 622 flow [2023-08-27 01:10:56,230 INFO L124 PetriNetUnfolderBase]: 22/291 cut-off events. [2023-08-27 01:10:56,230 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 01:10:56,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 291 events. 22/291 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 316 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 245. Up to 2 conditions per place. [2023-08-27 01:10:56,235 INFO L82 GeneralOperation]: Start removeDead. Operand has 286 places, 295 transitions, 622 flow [2023-08-27 01:10:56,243 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 278 transitions, 580 flow [2023-08-27 01:10:56,246 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 01:10:56,255 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 278 transitions, 580 flow [2023-08-27 01:10:56,258 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 278 transitions, 580 flow [2023-08-27 01:10:56,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 278 transitions, 580 flow [2023-08-27 01:10:56,316 INFO L124 PetriNetUnfolderBase]: 22/278 cut-off events. [2023-08-27 01:10:56,316 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 01:10:56,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 278 events. 22/278 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 316 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 245. Up to 2 conditions per place. [2023-08-27 01:10:56,320 INFO L119 LiptonReduction]: Number of co-enabled transitions 4644 [2023-08-27 01:11:09,748 INFO L134 LiptonReduction]: Checked pairs total: 9756 [2023-08-27 01:11:09,748 INFO L136 LiptonReduction]: Total number of compositions: 288 [2023-08-27 01:11:09,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 01:11:09,761 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;@4c3b8837, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 01:11:09,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-08-27 01:11:09,762 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 01:11:09,762 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 01:11:09,763 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 01:11:09,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:11:09,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 01:11:09,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-27 01:11:09,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:11:09,766 INFO L85 PathProgramCache]: Analyzing trace with hash 49858, now seen corresponding path program 1 times [2023-08-27 01:11:09,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:11:09,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020632175] [2023-08-27 01:11:09,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:09,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:11:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:09,976 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 01:11:09,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:11:09,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020632175] [2023-08-27 01:11:09,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020632175] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:11:09,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:11:09,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:11:09,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756204261] [2023-08-27 01:11:09,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:11:09,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:11:09,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:11:10,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:11:10,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:11:10,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 583 [2023-08-27 01:11:10,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 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 01:11:10,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:11:10,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 583 [2023-08-27 01:11:10,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:11:13,502 INFO L124 PetriNetUnfolderBase]: 29719/37290 cut-off events. [2023-08-27 01:11:13,503 INFO L125 PetriNetUnfolderBase]: For 576/576 co-relation queries the response was YES. [2023-08-27 01:11:13,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75127 conditions, 37290 events. 29719/37290 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 3320. Compared 203225 event pairs, 20248 based on Foata normal form. 0/12970 useless extension candidates. Maximal degree in co-relation 66046. Up to 36536 conditions per place. [2023-08-27 01:11:13,722 INFO L140 encePairwiseOnDemand]: 559/583 looper letters, 53 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2023-08-27 01:11:13,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 66 transitions, 276 flow [2023-08-27 01:11:13,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:11:13,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:11:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 722 transitions. [2023-08-27 01:11:13,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128073184676958 [2023-08-27 01:11:13,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 722 transitions. [2023-08-27 01:11:13,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 722 transitions. [2023-08-27 01:11:13,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:11:13,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 722 transitions. [2023-08-27 01:11:13,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 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 01:11:13,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 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 01:11:13,755 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 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 01:11:13,756 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 166 flow. Second operand 3 states and 722 transitions. [2023-08-27 01:11:13,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 66 transitions, 276 flow [2023-08-27 01:11:13,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 260 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 01:11:13,938 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 192 flow [2023-08-27 01:11:13,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2023-08-27 01:11:13,941 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -15 predicate places. [2023-08-27 01:11:13,941 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 192 flow [2023-08-27 01:11:13,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 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 01:11:13,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:11:13,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:11:13,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 01:11:13,942 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-27 01:11:13,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:11:13,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1547034, now seen corresponding path program 1 times [2023-08-27 01:11:13,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:11:13,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943529517] [2023-08-27 01:11:13,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:13,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:11:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:11:14,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:11:14,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943529517] [2023-08-27 01:11:14,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943529517] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:11:14,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152883492] [2023-08-27 01:11:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:14,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:11:14,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:11:14,048 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:11:14,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 01:11:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:14,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:11:14,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:11:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:11:14,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:11:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:11:14,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152883492] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:11:14,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:11:14,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 01:11:14,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844780352] [2023-08-27 01:11:14,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:11:14,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:11:14,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:11:14,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:11:14,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:11:14,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 583 [2023-08-27 01:11:14,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 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 01:11:14,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:11:14,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 583 [2023-08-27 01:11:14,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:11:17,523 INFO L124 PetriNetUnfolderBase]: 29737/37317 cut-off events. [2023-08-27 01:11:17,523 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 01:11:17,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74332 conditions, 37317 events. 29737/37317 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3320. Compared 203024 event pairs, 20248 based on Foata normal form. 0/12989 useless extension candidates. Maximal degree in co-relation 74177. Up to 36536 conditions per place. [2023-08-27 01:11:17,721 INFO L140 encePairwiseOnDemand]: 570/583 looper letters, 50 selfloop transitions, 37 changer transitions 0/93 dead transitions. [2023-08-27 01:11:17,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 486 flow [2023-08-27 01:11:17,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:11:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:11:17,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1601 transitions. [2023-08-27 01:11:17,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39230580740014703 [2023-08-27 01:11:17,728 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1601 transitions. [2023-08-27 01:11:17,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1601 transitions. [2023-08-27 01:11:17,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:11:17,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1601 transitions. [2023-08-27 01:11:17,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 228.71428571428572) internal successors, (1601), 7 states have internal predecessors, (1601), 0 states have call successors, (0), 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 01:11:17,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 583.0) internal successors, (4664), 8 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:17,742 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 583.0) internal successors, (4664), 8 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:17,742 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 192 flow. Second operand 7 states and 1601 transitions. [2023-08-27 01:11:17,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 486 flow [2023-08-27 01:11:17,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:11:17,745 INFO L231 Difference]: Finished difference. Result has 69 places, 93 transitions, 422 flow [2023-08-27 01:11:17,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=422, PETRI_PLACES=69, PETRI_TRANSITIONS=93} [2023-08-27 01:11:17,746 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2023-08-27 01:11:17,746 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 93 transitions, 422 flow [2023-08-27 01:11:17,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 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 01:11:17,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:11:17,747 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-27 01:11:17,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 01:11:17,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:11:17,952 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-27 01:11:17,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:11:17,952 INFO L85 PathProgramCache]: Analyzing trace with hash 47959489, now seen corresponding path program 1 times [2023-08-27 01:11:17,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:11:17,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581173469] [2023-08-27 01:11:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:17,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:11:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:18,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:11:18,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:11:18,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581173469] [2023-08-27 01:11:18,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581173469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:11:18,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:11:18,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:11:18,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523542807] [2023-08-27 01:11:18,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:11:18,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:11:18,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:11:18,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:11:18,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:11:18,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 583 [2023-08-27 01:11:18,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 93 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 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 01:11:18,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:11:18,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 583 [2023-08-27 01:11:18,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:11:21,568 INFO L124 PetriNetUnfolderBase]: 29728/37305 cut-off events. [2023-08-27 01:11:21,569 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-27 01:11:21,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74342 conditions, 37305 events. 29728/37305 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3320. Compared 203458 event pairs, 20248 based on Foata normal form. 0/12991 useless extension candidates. Maximal degree in co-relation 74248. Up to 36527 conditions per place. [2023-08-27 01:11:21,755 INFO L140 encePairwiseOnDemand]: 578/583 looper letters, 69 selfloop transitions, 6 changer transitions 0/81 dead transitions. [2023-08-27 01:11:21,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 491 flow [2023-08-27 01:11:21,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:11:21,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:11:21,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2023-08-27 01:11:21,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3996569468267582 [2023-08-27 01:11:21,758 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2023-08-27 01:11:21,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2023-08-27 01:11:21,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:11:21,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2023-08-27 01:11:21,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 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 01:11:21,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 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 01:11:21,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 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 01:11:21,763 INFO L175 Difference]: Start difference. First operand has 69 places, 93 transitions, 422 flow. Second operand 3 states and 699 transitions. [2023-08-27 01:11:21,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 491 flow [2023-08-27 01:11:21,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 454 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-27 01:11:21,767 INFO L231 Difference]: Finished difference. Result has 66 places, 81 transitions, 316 flow [2023-08-27 01:11:21,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=66, PETRI_TRANSITIONS=81} [2023-08-27 01:11:21,768 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -11 predicate places. [2023-08-27 01:11:21,769 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 81 transitions, 316 flow [2023-08-27 01:11:21,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 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 01:11:21,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:11:21,769 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 01:11:21,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 01:11:21,769 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-27 01:11:21,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:11:21,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1155524414, now seen corresponding path program 2 times [2023-08-27 01:11:21,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:11:21,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003106946] [2023-08-27 01:11:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:21,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:11:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:11:21,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:11:21,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003106946] [2023-08-27 01:11:21,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003106946] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:11:21,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207977405] [2023-08-27 01:11:21,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:11:21,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:11:21,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:11:21,864 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:11:21,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 01:11:21,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:11:21,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:11:21,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 01:11:21,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:11:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 01:11:21,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:11:21,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207977405] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:11:21,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:11:21,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 01:11:21,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395059052] [2023-08-27 01:11:21,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:11:21,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:11:21,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:11:21,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:11:21,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 01:11:21,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 583 [2023-08-27 01:11:21,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 81 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 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 01:11:21,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:11:21,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 583 [2023-08-27 01:11:21,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:11:25,458 INFO L124 PetriNetUnfolderBase]: 29728/37304 cut-off events. [2023-08-27 01:11:25,458 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 01:11:25,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74322 conditions, 37304 events. 29728/37304 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 3278. Compared 203040 event pairs, 20248 based on Foata normal form. 1/12995 useless extension candidates. Maximal degree in co-relation 74242. Up to 36549 conditions per place. [2023-08-27 01:11:25,656 INFO L140 encePairwiseOnDemand]: 580/583 looper letters, 68 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2023-08-27 01:11:25,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 454 flow [2023-08-27 01:11:25,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:11:25,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:11:25,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2023-08-27 01:11:25,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40308747855917665 [2023-08-27 01:11:25,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2023-08-27 01:11:25,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2023-08-27 01:11:25,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:11:25,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2023-08-27 01:11:25,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 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 01:11:25,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 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 01:11:25,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 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 01:11:25,663 INFO L175 Difference]: Start difference. First operand has 66 places, 81 transitions, 316 flow. Second operand 3 states and 705 transitions. [2023-08-27 01:11:25,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 454 flow [2023-08-27 01:11:25,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 442 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:11:25,669 INFO L231 Difference]: Finished difference. Result has 65 places, 80 transitions, 306 flow [2023-08-27 01:11:25,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=65, PETRI_TRANSITIONS=80} [2023-08-27 01:11:25,671 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -12 predicate places. [2023-08-27 01:11:25,671 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 80 transitions, 306 flow [2023-08-27 01:11:25,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 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 01:11:25,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:11:25,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:11:25,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 01:11:25,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-27 01:11:25,876 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-27 01:11:25,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:11:25,876 INFO L85 PathProgramCache]: Analyzing trace with hash -573593021, now seen corresponding path program 1 times [2023-08-27 01:11:25,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:11:25,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474614176] [2023-08-27 01:11:25,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:25,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:11:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:25,939 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 01:11:25,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:11:25,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474614176] [2023-08-27 01:11:25,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474614176] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:11:25,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:11:25,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:11:25,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569744337] [2023-08-27 01:11:25,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:11:25,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:11:25,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:11:25,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:11:25,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:11:25,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 583 [2023-08-27 01:11:25,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 80 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 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 01:11:25,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:11:25,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 583 [2023-08-27 01:11:25,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:11:30,793 INFO L124 PetriNetUnfolderBase]: 47758/60522 cut-off events. [2023-08-27 01:11:30,793 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-27 01:11:30,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121647 conditions, 60522 events. 47758/60522 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 4714. Compared 362193 event pairs, 15838 based on Foata normal form. 0/24728 useless extension candidates. Maximal degree in co-relation 121592. Up to 34158 conditions per place. [2023-08-27 01:11:31,048 INFO L140 encePairwiseOnDemand]: 579/583 looper letters, 115 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2023-08-27 01:11:31,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 120 transitions, 627 flow [2023-08-27 01:11:31,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:11:31,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:11:31,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2023-08-27 01:11:31,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4556889651229274 [2023-08-27 01:11:31,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2023-08-27 01:11:31,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2023-08-27 01:11:31,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:11:31,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2023-08-27 01:11:31,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 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 01:11:31,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 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 01:11:31,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 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 01:11:31,056 INFO L175 Difference]: Start difference. First operand has 65 places, 80 transitions, 306 flow. Second operand 3 states and 797 transitions. [2023-08-27 01:11:31,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 120 transitions, 627 flow [2023-08-27 01:11:31,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 120 transitions, 615 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:11:31,058 INFO L231 Difference]: Finished difference. Result has 66 places, 81 transitions, 308 flow [2023-08-27 01:11:31,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=66, PETRI_TRANSITIONS=81} [2023-08-27 01:11:31,058 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -11 predicate places. [2023-08-27 01:11:31,059 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 81 transitions, 308 flow [2023-08-27 01:11:31,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 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 01:11:31,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:11:31,059 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 01:11:31,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 01:11:31,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-27 01:11:31,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:11:31,060 INFO L85 PathProgramCache]: Analyzing trace with hash -595008061, now seen corresponding path program 1 times [2023-08-27 01:11:31,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:11:31,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147076813] [2023-08-27 01:11:31,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:31,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:11:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:31,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:11:31,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:11:31,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147076813] [2023-08-27 01:11:31,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147076813] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:11:31,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635905912] [2023-08-27 01:11:31,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:31,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:11:31,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:11:31,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:11:31,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 01:11:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:31,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 01:11:31,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:11:31,259 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:11:31,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:11:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:11:31,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635905912] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:11:31,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:11:31,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 01:11:31,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304420232] [2023-08-27 01:11:31,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:11:31,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 01:11:31,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:11:31,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 01:11:31,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 01:11:31,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 583 [2023-08-27 01:11:31,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 81 transitions, 308 flow. Second operand has 13 states, 13 states have (on average 216.15384615384616) internal successors, (2810), 13 states have internal predecessors, (2810), 0 states have call successors, (0), 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 01:11:31,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:11:31,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 583 [2023-08-27 01:11:31,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:11:35,665 INFO L124 PetriNetUnfolderBase]: 37724/48533 cut-off events. [2023-08-27 01:11:35,666 INFO L125 PetriNetUnfolderBase]: For 3096/3096 co-relation queries the response was YES. [2023-08-27 01:11:35,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101836 conditions, 48533 events. 37724/48533 cut-off events. For 3096/3096 co-relation queries the response was YES. Maximal size of possible extension queue 4252. Compared 293402 event pairs, 29063 based on Foata normal form. 12/19500 useless extension candidates. Maximal degree in co-relation 101625. Up to 47488 conditions per place. [2023-08-27 01:11:35,878 INFO L140 encePairwiseOnDemand]: 574/583 looper letters, 50 selfloop transitions, 61 changer transitions 0/117 dead transitions. [2023-08-27 01:11:35,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 117 transitions, 734 flow [2023-08-27 01:11:35,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 01:11:35,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 01:11:35,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2702 transitions. [2023-08-27 01:11:35,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3862206975414523 [2023-08-27 01:11:35,883 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2702 transitions. [2023-08-27 01:11:35,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2702 transitions. [2023-08-27 01:11:35,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:11:35,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2702 transitions. [2023-08-27 01:11:35,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 225.16666666666666) internal successors, (2702), 12 states have internal predecessors, (2702), 0 states have call successors, (0), 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 01:11:35,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 583.0) internal successors, (7579), 13 states have internal predecessors, (7579), 0 states have call successors, (0), 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 01:11:35,894 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 583.0) internal successors, (7579), 13 states have internal predecessors, (7579), 0 states have call successors, (0), 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 01:11:35,895 INFO L175 Difference]: Start difference. First operand has 66 places, 81 transitions, 308 flow. Second operand 12 states and 2702 transitions. [2023-08-27 01:11:35,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 117 transitions, 734 flow [2023-08-27 01:11:35,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 117 transitions, 732 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:11:35,897 INFO L231 Difference]: Finished difference. Result has 82 places, 117 transitions, 718 flow [2023-08-27 01:11:35,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=718, PETRI_PLACES=82, PETRI_TRANSITIONS=117} [2023-08-27 01:11:35,898 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 5 predicate places. [2023-08-27 01:11:35,898 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 117 transitions, 718 flow [2023-08-27 01:11:35,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 216.15384615384616) internal successors, (2810), 13 states have internal predecessors, (2810), 0 states have call successors, (0), 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 01:11:35,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:11:35,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:11:35,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-27 01:11:36,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:11:36,105 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-27 01:11:36,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:11:36,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1467039356, now seen corresponding path program 1 times [2023-08-27 01:11:36,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:11:36,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531105516] [2023-08-27 01:11:36,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:36,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:11:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:11:36,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:11:36,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531105516] [2023-08-27 01:11:36,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531105516] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:11:36,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24294277] [2023-08-27 01:11:36,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:36,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:11:36,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:11:36,173 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:11:36,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 01:11:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:36,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 01:11:36,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:11:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:11:36,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:11:36,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24294277] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:11:36,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:11:36,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-08-27 01:11:36,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958026252] [2023-08-27 01:11:36,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:11:36,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:11:36,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:11:36,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:11:36,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 01:11:36,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 583 [2023-08-27 01:11:36,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 117 transitions, 718 flow. Second operand has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 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 01:11:36,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:11:36,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 583 [2023-08-27 01:11:36,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:11:41,035 INFO L124 PetriNetUnfolderBase]: 40005/51690 cut-off events. [2023-08-27 01:11:41,035 INFO L125 PetriNetUnfolderBase]: For 3174/3174 co-relation queries the response was YES. [2023-08-27 01:11:41,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107387 conditions, 51690 events. 40005/51690 cut-off events. For 3174/3174 co-relation queries the response was YES. Maximal size of possible extension queue 4360. Compared 316480 event pairs, 30763 based on Foata normal form. 0/21299 useless extension candidates. Maximal degree in co-relation 107190. Up to 47536 conditions per place. [2023-08-27 01:11:41,310 INFO L140 encePairwiseOnDemand]: 569/583 looper letters, 172 selfloop transitions, 16 changer transitions 0/194 dead transitions. [2023-08-27 01:11:41,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 194 transitions, 1579 flow [2023-08-27 01:11:41,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 01:11:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 01:11:41,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1100 transitions. [2023-08-27 01:11:41,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37735849056603776 [2023-08-27 01:11:41,312 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1100 transitions. [2023-08-27 01:11:41,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1100 transitions. [2023-08-27 01:11:41,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:11:41,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1100 transitions. [2023-08-27 01:11:41,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 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 01:11:41,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 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 01:11:41,317 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 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 01:11:41,317 INFO L175 Difference]: Start difference. First operand has 82 places, 117 transitions, 718 flow. Second operand 5 states and 1100 transitions. [2023-08-27 01:11:41,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 194 transitions, 1579 flow [2023-08-27 01:11:41,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 194 transitions, 1279 flow, removed 91 selfloop flow, removed 5 redundant places. [2023-08-27 01:11:41,322 INFO L231 Difference]: Finished difference. Result has 83 places, 130 transitions, 715 flow [2023-08-27 01:11:41,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=715, PETRI_PLACES=83, PETRI_TRANSITIONS=130} [2023-08-27 01:11:41,322 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2023-08-27 01:11:41,322 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 130 transitions, 715 flow [2023-08-27 01:11:41,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 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 01:11:41,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:11:41,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:11:41,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 01:11:41,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:11:41,527 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-27 01:11:41,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:11:41,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1458564214, now seen corresponding path program 1 times [2023-08-27 01:11:41,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:11:41,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898925125] [2023-08-27 01:11:41,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:41,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:11:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:41,581 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 01:11:41,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:11:41,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898925125] [2023-08-27 01:11:41,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898925125] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:11:41,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:11:41,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:11:41,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287288408] [2023-08-27 01:11:41,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:11:41,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:11:41,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:11:41,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:11:41,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:11:41,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 583 [2023-08-27 01:11:41,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 130 transitions, 715 flow. Second operand has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 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 01:11:41,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:11:41,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 583 [2023-08-27 01:11:41,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:11:49,081 INFO L124 PetriNetUnfolderBase]: 60864/80469 cut-off events. [2023-08-27 01:11:49,081 INFO L125 PetriNetUnfolderBase]: For 12762/12762 co-relation queries the response was YES. [2023-08-27 01:11:49,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186177 conditions, 80469 events. 60864/80469 cut-off events. For 12762/12762 co-relation queries the response was YES. Maximal size of possible extension queue 5807. Compared 564899 event pairs, 24290 based on Foata normal form. 0/45416 useless extension candidates. Maximal degree in co-relation 186009. Up to 45409 conditions per place. [2023-08-27 01:11:49,581 INFO L140 encePairwiseOnDemand]: 579/583 looper letters, 164 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2023-08-27 01:11:49,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 169 transitions, 1153 flow [2023-08-27 01:11:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:11:49,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:11:49,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 795 transitions. [2023-08-27 01:11:49,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-08-27 01:11:49,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 795 transitions. [2023-08-27 01:11:49,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 795 transitions. [2023-08-27 01:11:49,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:11:49,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 795 transitions. [2023-08-27 01:11:49,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 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 01:11:49,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 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 01:11:49,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 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 01:11:49,587 INFO L175 Difference]: Start difference. First operand has 83 places, 130 transitions, 715 flow. Second operand 3 states and 795 transitions. [2023-08-27 01:11:49,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 169 transitions, 1153 flow [2023-08-27 01:11:49,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 169 transitions, 1147 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 01:11:49,605 INFO L231 Difference]: Finished difference. Result has 85 places, 131 transitions, 723 flow [2023-08-27 01:11:49,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=723, PETRI_PLACES=85, PETRI_TRANSITIONS=131} [2023-08-27 01:11:49,608 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 8 predicate places. [2023-08-27 01:11:49,608 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 131 transitions, 723 flow [2023-08-27 01:11:49,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 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 01:11:49,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:11:49,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:11:49,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 01:11:49,608 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-27 01:11:49,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:11:49,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1458564310, now seen corresponding path program 1 times [2023-08-27 01:11:49,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:11:49,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397206078] [2023-08-27 01:11:49,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:49,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:11:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:49,694 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 01:11:49,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:11:49,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397206078] [2023-08-27 01:11:49,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397206078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:11:49,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:11:49,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 01:11:49,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22403469] [2023-08-27 01:11:49,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:11:49,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:11:49,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:11:49,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:11:49,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 01:11:49,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 583 [2023-08-27 01:11:49,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 131 transitions, 723 flow. Second operand has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 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 01:11:49,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:11:49,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 583 [2023-08-27 01:11:49,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:11:56,227 INFO L124 PetriNetUnfolderBase]: 51018/69099 cut-off events. [2023-08-27 01:11:56,227 INFO L125 PetriNetUnfolderBase]: For 14244/14244 co-relation queries the response was YES. [2023-08-27 01:11:56,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166736 conditions, 69099 events. 51018/69099 cut-off events. For 14244/14244 co-relation queries the response was YES. Maximal size of possible extension queue 5175. Compared 490149 event pairs, 47150 based on Foata normal form. 0/39297 useless extension candidates. Maximal degree in co-relation 166503. Up to 64035 conditions per place. [2023-08-27 01:11:56,879 INFO L140 encePairwiseOnDemand]: 572/583 looper letters, 167 selfloop transitions, 14 changer transitions 0/187 dead transitions. [2023-08-27 01:11:56,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 187 transitions, 1343 flow [2023-08-27 01:11:56,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:11:56,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:11:56,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 893 transitions. [2023-08-27 01:11:56,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3829331046312178 [2023-08-27 01:11:56,881 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 893 transitions. [2023-08-27 01:11:56,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 893 transitions. [2023-08-27 01:11:56,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:11:56,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 893 transitions. [2023-08-27 01:11:56,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 223.25) internal successors, (893), 4 states have internal predecessors, (893), 0 states have call successors, (0), 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 01:11:56,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 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 01:11:56,885 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 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 01:11:56,886 INFO L175 Difference]: Start difference. First operand has 85 places, 131 transitions, 723 flow. Second operand 4 states and 893 transitions. [2023-08-27 01:11:56,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 187 transitions, 1343 flow [2023-08-27 01:11:56,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 187 transitions, 1341 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:11:56,892 INFO L231 Difference]: Finished difference. Result has 88 places, 131 transitions, 766 flow [2023-08-27 01:11:56,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=766, PETRI_PLACES=88, PETRI_TRANSITIONS=131} [2023-08-27 01:11:56,893 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 11 predicate places. [2023-08-27 01:11:56,893 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 131 transitions, 766 flow [2023-08-27 01:11:56,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 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 01:11:56,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:11:56,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:11:56,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 01:11:56,894 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-27 01:11:56,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:11:56,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1440166202, now seen corresponding path program 1 times [2023-08-27 01:11:56,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:11:56,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170243755] [2023-08-27 01:11:56,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:11:56,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:11:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:11:57,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:11:57,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:11:57,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170243755] [2023-08-27 01:11:57,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170243755] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:11:57,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:11:57,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 01:11:57,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152639683] [2023-08-27 01:11:57,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:11:57,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 01:11:57,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:11:57,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 01:11:57,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 01:11:57,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 583 [2023-08-27 01:11:57,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 131 transitions, 766 flow. Second operand has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 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 01:11:57,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:11:57,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 583 [2023-08-27 01:11:57,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:12:10,187 INFO L124 PetriNetUnfolderBase]: 116028/153877 cut-off events. [2023-08-27 01:12:10,188 INFO L125 PetriNetUnfolderBase]: For 26671/26671 co-relation queries the response was YES. [2023-08-27 01:12:10,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387382 conditions, 153877 events. 116028/153877 cut-off events. For 26671/26671 co-relation queries the response was YES. Maximal size of possible extension queue 5029. Compared 979556 event pairs, 44328 based on Foata normal form. 2202/111905 useless extension candidates. Maximal degree in co-relation 387146. Up to 60157 conditions per place. [2023-08-27 01:12:11,157 INFO L140 encePairwiseOnDemand]: 575/583 looper letters, 219 selfloop transitions, 28 changer transitions 0/247 dead transitions. [2023-08-27 01:12:11,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 247 transitions, 1615 flow [2023-08-27 01:12:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:12:11,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:12:11,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1302 transitions. [2023-08-27 01:12:11,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37221269296740994 [2023-08-27 01:12:11,160 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1302 transitions. [2023-08-27 01:12:11,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1302 transitions. [2023-08-27 01:12:11,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:12:11,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1302 transitions. [2023-08-27 01:12:11,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 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 01:12:11,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 583.0) internal successors, (4081), 7 states have internal predecessors, (4081), 0 states have call successors, (0), 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 01:12:11,166 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 583.0) internal successors, (4081), 7 states have internal predecessors, (4081), 0 states have call successors, (0), 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 01:12:11,166 INFO L175 Difference]: Start difference. First operand has 88 places, 131 transitions, 766 flow. Second operand 6 states and 1302 transitions. [2023-08-27 01:12:11,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 247 transitions, 1615 flow [2023-08-27 01:12:11,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 247 transitions, 1596 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 01:12:11,187 INFO L231 Difference]: Finished difference. Result has 94 places, 132 transitions, 815 flow [2023-08-27 01:12:11,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=815, PETRI_PLACES=94, PETRI_TRANSITIONS=132} [2023-08-27 01:12:11,187 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 17 predicate places. [2023-08-27 01:12:11,188 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 132 transitions, 815 flow [2023-08-27 01:12:11,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 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 01:12:11,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:12:11,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:12:11,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 01:12:11,189 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-27 01:12:11,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:12:11,189 INFO L85 PathProgramCache]: Analyzing trace with hash 922506796, now seen corresponding path program 1 times [2023-08-27 01:12:11,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:12:11,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058194443] [2023-08-27 01:12:11,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:12:11,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:12:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:11,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:12:11,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:12:11,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058194443] [2023-08-27 01:12:11,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058194443] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:12:11,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495081461] [2023-08-27 01:12:11,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:12:11,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:12:11,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:12:11,257 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:12:11,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 01:12:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:11,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:12:11,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:12:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:12:11,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:12:11,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:12:11,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495081461] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:12:11,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:12:11,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 01:12:11,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110581180] [2023-08-27 01:12:11,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:12:11,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:12:11,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:12:11,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:12:11,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:12:11,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 583 [2023-08-27 01:12:11,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 132 transitions, 815 flow. Second operand has 7 states, 7 states have (on average 238.14285714285714) internal successors, (1667), 7 states have internal predecessors, (1667), 0 states have call successors, (0), 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 01:12:11,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:12:11,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 583 [2023-08-27 01:12:11,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:12:33,246 INFO L124 PetriNetUnfolderBase]: 169142/224345 cut-off events. [2023-08-27 01:12:33,246 INFO L125 PetriNetUnfolderBase]: For 59304/63180 co-relation queries the response was YES. [2023-08-27 01:12:34,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602977 conditions, 224345 events. 169142/224345 cut-off events. For 59304/63180 co-relation queries the response was YES. Maximal size of possible extension queue 9009. Compared 1621917 event pairs, 36708 based on Foata normal form. 3876/158103 useless extension candidates. Maximal degree in co-relation 602735. Up to 53489 conditions per place. [2023-08-27 01:12:34,834 INFO L140 encePairwiseOnDemand]: 579/583 looper letters, 315 selfloop transitions, 9 changer transitions 0/328 dead transitions. [2023-08-27 01:12:34,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 328 transitions, 2116 flow [2023-08-27 01:12:34,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:12:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:12:34,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1886 transitions. [2023-08-27 01:12:34,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621416319529527 [2023-08-27 01:12:34,837 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1886 transitions. [2023-08-27 01:12:34,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1886 transitions. [2023-08-27 01:12:34,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:12:34,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1886 transitions. [2023-08-27 01:12:34,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 269.42857142857144) internal successors, (1886), 7 states have internal predecessors, (1886), 0 states have call successors, (0), 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 01:12:34,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 583.0) internal successors, (4664), 8 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:34,844 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 583.0) internal successors, (4664), 8 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:34,844 INFO L175 Difference]: Start difference. First operand has 94 places, 132 transitions, 815 flow. Second operand 7 states and 1886 transitions. [2023-08-27 01:12:34,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 328 transitions, 2116 flow [2023-08-27 01:12:34,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 328 transitions, 2060 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 01:12:34,878 INFO L231 Difference]: Finished difference. Result has 100 places, 138 transitions, 828 flow [2023-08-27 01:12:34,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=828, PETRI_PLACES=100, PETRI_TRANSITIONS=138} [2023-08-27 01:12:34,879 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 23 predicate places. [2023-08-27 01:12:34,879 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 138 transitions, 828 flow [2023-08-27 01:12:34,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 238.14285714285714) internal successors, (1667), 7 states have internal predecessors, (1667), 0 states have call successors, (0), 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 01:12:34,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:12:34,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:12:34,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 01:12:35,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-27 01:12:35,081 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-27 01:12:35,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:12:35,081 INFO L85 PathProgramCache]: Analyzing trace with hash 922506795, now seen corresponding path program 1 times [2023-08-27 01:12:35,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:12:35,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918783241] [2023-08-27 01:12:35,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:12:35,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:12:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:35,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:12:35,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:12:35,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918783241] [2023-08-27 01:12:35,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918783241] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:12:35,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328831551] [2023-08-27 01:12:35,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:12:35,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:12:35,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:12:35,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:12:35,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 01:12:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:35,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:12:35,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:12:35,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:12:35,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:12:35,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328831551] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:12:35,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:12:35,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-08-27 01:12:35,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126151037] [2023-08-27 01:12:35,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:12:35,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:12:35,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:12:35,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:12:35,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 01:12:35,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 583 [2023-08-27 01:12:35,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 138 transitions, 828 flow. Second operand has 4 states, 4 states have (on average 236.5) internal successors, (946), 4 states have internal predecessors, (946), 0 states have call successors, (0), 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 01:12:35,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:12:35,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 583 [2023-08-27 01:12:35,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:12:55,686 INFO L124 PetriNetUnfolderBase]: 155618/208621 cut-off events. [2023-08-27 01:12:55,686 INFO L125 PetriNetUnfolderBase]: For 78811/82522 co-relation queries the response was YES. [2023-08-27 01:12:56,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578141 conditions, 208621 events. 155618/208621 cut-off events. For 78811/82522 co-relation queries the response was YES. Maximal size of possible extension queue 8664. Compared 1562382 event pairs, 36708 based on Foata normal form. 12511/155600 useless extension candidates. Maximal degree in co-relation 577902. Up to 154884 conditions per place. [2023-08-27 01:12:57,440 INFO L140 encePairwiseOnDemand]: 580/583 looper letters, 168 selfloop transitions, 2 changer transitions 0/174 dead transitions. [2023-08-27 01:12:57,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 174 transitions, 1270 flow [2023-08-27 01:12:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:12:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:12:57,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1029 transitions. [2023-08-27 01:12:57,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44125214408233276 [2023-08-27 01:12:57,442 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1029 transitions. [2023-08-27 01:12:57,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1029 transitions. [2023-08-27 01:12:57,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:12:57,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1029 transitions. [2023-08-27 01:12:57,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.25) internal successors, (1029), 4 states have internal predecessors, (1029), 0 states have call successors, (0), 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 01:12:57,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 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 01:12:57,446 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 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 01:12:57,446 INFO L175 Difference]: Start difference. First operand has 100 places, 138 transitions, 828 flow. Second operand 4 states and 1029 transitions. [2023-08-27 01:12:57,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 174 transitions, 1270 flow [2023-08-27 01:12:58,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 174 transitions, 1262 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 01:12:58,928 INFO L231 Difference]: Finished difference. Result has 100 places, 134 transitions, 797 flow [2023-08-27 01:12:58,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=797, PETRI_PLACES=100, PETRI_TRANSITIONS=134} [2023-08-27 01:12:58,928 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 23 predicate places. [2023-08-27 01:12:58,928 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 134 transitions, 797 flow [2023-08-27 01:12:58,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 236.5) internal successors, (946), 4 states have internal predecessors, (946), 0 states have call successors, (0), 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 01:12:58,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:12:58,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:12:58,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 01:12:59,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:12:59,134 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-27 01:12:59,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:12:59,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1907461222, now seen corresponding path program 1 times [2023-08-27 01:12:59,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:12:59,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298417116] [2023-08-27 01:12:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:12:59,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:12:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:12:59,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:12:59,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298417116] [2023-08-27 01:12:59,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298417116] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:12:59,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522172934] [2023-08-27 01:12:59,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:12:59,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:12:59,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:12:59,628 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:12:59,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 01:12:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:59,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 01:12:59,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:12:59,836 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:12:59,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:12:59,869 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:12:59,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:12:59,900 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:12:59,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:12:59,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:12:59,931 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_564 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_564) c_~f~0.base) (+ c_~f~0.offset (* c_~j~0 4))) 2147483649)) is different from false [2023-08-27 01:12:59,985 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:12:59,985 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 01:12:59,993 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:12:59,993 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 71 [2023-08-27 01:12:59,998 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2023-08-27 01:13:00,004 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2023-08-27 01:13:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:13:00,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522172934] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:13:00,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:13:00,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2023-08-27 01:13:00,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652651310] [2023-08-27 01:13:00,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:13:00,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 01:13:00,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:13:00,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 01:13:00,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=169, Unknown=3, NotChecked=26, Total=240 [2023-08-27 01:13:00,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 583 [2023-08-27 01:13:00,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 134 transitions, 797 flow. Second operand has 16 states, 16 states have (on average 171.8125) internal successors, (2749), 16 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:13:00,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:13:00,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 583 [2023-08-27 01:13:00,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand