/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 15:41:07,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 15:41:07,186 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 15:41:07,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 15:41:07,190 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 15:41:07,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 15:41:07,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 15:41:07,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 15:41:07,205 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 15:41:07,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 15:41:07,205 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 15:41:07,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 15:41:07,206 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 15:41:07,206 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 15:41:07,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 15:41:07,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 15:41:07,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 15:41:07,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 15:41:07,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 15:41:07,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 15:41:07,208 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 15:41:07,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 15:41:07,209 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 15:41:07,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 15:41:07,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 15:41:07,209 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 15:41:07,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 15:41:07,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 15:41:07,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 15:41:07,210 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 15:41:07,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 15:41:07,211 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 15:41:07,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 15:41:07,211 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 15:41:07,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 15:41:07,212 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 15:41:07,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 15:41:07,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 15:41:07,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 15:41:07,460 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 15:41:07,460 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 15:41:07,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2023-08-27 15:41:08,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 15:41:08,594 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 15:41:08,595 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2023-08-27 15:41:08,604 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/478509e18/959fb58045ca44ef9267387d5b7055d7/FLAG30210b441 [2023-08-27 15:41:08,614 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/478509e18/959fb58045ca44ef9267387d5b7055d7 [2023-08-27 15:41:08,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 15:41:08,617 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 15:41:08,617 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 15:41:08,617 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 15:41:08,619 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 15:41:08,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:41:08" (1/1) ... [2023-08-27 15:41:08,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c7a0442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:41:08, skipping insertion in model container [2023-08-27 15:41:08,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:41:08" (1/1) ... [2023-08-27 15:41:08,649 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 15:41:08,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 15:41:08,864 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 15:41:08,888 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [208] [2023-08-27 15:41:08,889 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [209] [2023-08-27 15:41:08,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 15:41:08,953 INFO L206 MainTranslator]: Completed translation [2023-08-27 15:41:08,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:41:08 WrapperNode [2023-08-27 15:41:08,955 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 15:41:08,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 15:41:08,956 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 15:41:08,956 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 15:41:08,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:41:08" (1/1) ... [2023-08-27 15:41:08,986 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:41:08" (1/1) ... [2023-08-27 15:41:09,006 INFO L138 Inliner]: procedures = 168, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 155 [2023-08-27 15:41:09,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 15:41:09,007 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 15:41:09,007 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 15:41:09,007 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 15:41:09,013 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:41:08" (1/1) ... [2023-08-27 15:41:09,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:41:08" (1/1) ... [2023-08-27 15:41:09,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:41:08" (1/1) ... [2023-08-27 15:41:09,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:41:08" (1/1) ... [2023-08-27 15:41:09,020 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:41:08" (1/1) ... [2023-08-27 15:41:09,022 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:41:08" (1/1) ... [2023-08-27 15:41:09,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:41:08" (1/1) ... [2023-08-27 15:41:09,024 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:41:08" (1/1) ... [2023-08-27 15:41:09,041 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 15:41:09,041 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 15:41:09,041 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 15:41:09,042 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 15:41:09,042 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:41:08" (1/1) ... [2023-08-27 15:41:09,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 15:41:09,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:41:09,084 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 15:41:09,093 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 15:41:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 15:41:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-27 15:41:09,109 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-27 15:41:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-27 15:41:09,109 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-27 15:41:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 15:41:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 15:41:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 15:41:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 15:41:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 15:41:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-27 15:41:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 15:41:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 15:41:09,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 15:41:09,111 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 15:41:09,208 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 15:41:09,209 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 15:41:09,432 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 15:41:09,440 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 15:41:09,440 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 15:41:09,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:41:09 BoogieIcfgContainer [2023-08-27 15:41:09,442 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 15:41:09,443 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 15:41:09,443 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 15:41:09,445 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 15:41:09,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 03:41:08" (1/3) ... [2023-08-27 15:41:09,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dea08a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:41:09, skipping insertion in model container [2023-08-27 15:41:09,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:41:08" (2/3) ... [2023-08-27 15:41:09,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dea08a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:41:09, skipping insertion in model container [2023-08-27 15:41:09,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:41:09" (3/3) ... [2023-08-27 15:41:09,447 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2023-08-27 15:41:09,460 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 15:41:09,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-27 15:41:09,460 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 15:41:09,546 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 15:41:09,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 168 transitions, 352 flow [2023-08-27 15:41:09,648 INFO L124 PetriNetUnfolderBase]: 14/166 cut-off events. [2023-08-27 15:41:09,648 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 15:41:09,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 166 events. 14/166 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 373 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-08-27 15:41:09,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 168 transitions, 352 flow [2023-08-27 15:41:09,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 157 transitions, 323 flow [2023-08-27 15:41:09,665 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 15:41:09,677 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 157 transitions, 323 flow [2023-08-27 15:41:09,679 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 157 transitions, 323 flow [2023-08-27 15:41:09,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 157 transitions, 323 flow [2023-08-27 15:41:09,699 INFO L124 PetriNetUnfolderBase]: 14/157 cut-off events. [2023-08-27 15:41:09,699 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 15:41:09,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 157 events. 14/157 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 354 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-08-27 15:41:09,703 INFO L119 LiptonReduction]: Number of co-enabled transitions 6602 [2023-08-27 15:41:13,581 INFO L134 LiptonReduction]: Checked pairs total: 13935 [2023-08-27 15:41:13,581 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-08-27 15:41:13,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 15:41:13,593 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;@5555b63, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 15:41:13,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-27 15:41:13,596 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 15:41:13,596 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2023-08-27 15:41:13,596 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 15:41:13,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:41:13,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 15:41:13,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:41:13,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:41:13,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1411362533, now seen corresponding path program 1 times [2023-08-27 15:41:13,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:41:13,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462348303] [2023-08-27 15:41:13,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:13,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:41:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:13,857 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 15:41:13,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:41:13,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462348303] [2023-08-27 15:41:13,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462348303] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:41:13,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:41:13,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 15:41:13,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944258197] [2023-08-27 15:41:13,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:41:13,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:41:13,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:41:13,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:41:13,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:41:13,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 318 [2023-08-27 15:41:13,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 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 15:41:13,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:41:13,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 318 [2023-08-27 15:41:13,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:41:14,085 INFO L124 PetriNetUnfolderBase]: 1047/1793 cut-off events. [2023-08-27 15:41:14,085 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-08-27 15:41:14,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3532 conditions, 1793 events. 1047/1793 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 9011 event pairs, 370 based on Foata normal form. 44/1218 useless extension candidates. Maximal degree in co-relation 3273. Up to 992 conditions per place. [2023-08-27 15:41:14,093 INFO L140 encePairwiseOnDemand]: 312/318 looper letters, 61 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-27 15:41:14,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 277 flow [2023-08-27 15:41:14,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:41:14,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:41:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-08-27 15:41:14,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115303983228512 [2023-08-27 15:41:14,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-08-27 15:41:14,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-08-27 15:41:14,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:41:14,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-08-27 15:41:14,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 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 15:41:14,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:14,111 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:14,112 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 93 flow. Second operand 3 states and 488 transitions. [2023-08-27 15:41:14,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 277 flow [2023-08-27 15:41:14,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 68 transitions, 269 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 15:41:14,117 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 102 flow [2023-08-27 15:41:14,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2023-08-27 15:41:14,120 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-27 15:41:14,120 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 102 flow [2023-08-27 15:41:14,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 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 15:41:14,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:41:14,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:41:14,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 15:41:14,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:41:14,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:41:14,121 INFO L85 PathProgramCache]: Analyzing trace with hash -802653220, now seen corresponding path program 1 times [2023-08-27 15:41:14,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:41:14,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234932549] [2023-08-27 15:41:14,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:14,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:41:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:14,156 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 15:41:14,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:41:14,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234932549] [2023-08-27 15:41:14,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234932549] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:41:14,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:41:14,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 15:41:14,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105719512] [2023-08-27 15:41:14,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:41:14,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:41:14,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:41:14,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:41:14,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:41:14,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 318 [2023-08-27 15:41:14,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 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 15:41:14,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:41:14,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 318 [2023-08-27 15:41:14,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:41:14,328 INFO L124 PetriNetUnfolderBase]: 1469/2538 cut-off events. [2023-08-27 15:41:14,328 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-08-27 15:41:14,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5140 conditions, 2538 events. 1469/2538 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 14404 event pairs, 800 based on Foata normal form. 0/1802 useless extension candidates. Maximal degree in co-relation 2133. Up to 1734 conditions per place. [2023-08-27 15:41:14,370 INFO L140 encePairwiseOnDemand]: 313/318 looper letters, 61 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-27 15:41:14,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 287 flow [2023-08-27 15:41:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:41:14,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:41:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-08-27 15:41:14,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178197064989518 [2023-08-27 15:41:14,373 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-08-27 15:41:14,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-08-27 15:41:14,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:41:14,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-08-27 15:41:14,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 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 15:41:14,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:14,376 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:14,376 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 3 states and 494 transitions. [2023-08-27 15:41:14,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 287 flow [2023-08-27 15:41:14,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 68 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 15:41:14,378 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 116 flow [2023-08-27 15:41:14,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-08-27 15:41:14,379 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-27 15:41:14,379 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 116 flow [2023-08-27 15:41:14,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 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 15:41:14,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:41:14,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:41:14,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 15:41:14,380 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:41:14,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:41:14,380 INFO L85 PathProgramCache]: Analyzing trace with hash 889883699, now seen corresponding path program 1 times [2023-08-27 15:41:14,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:41:14,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386457787] [2023-08-27 15:41:14,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:14,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:41:14,393 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 15:41:14,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509328207] [2023-08-27 15:41:14,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:14,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:41:14,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:41:14,396 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 15:41:14,427 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 15:41:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:14,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 15:41:14,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:41:14,512 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 15:41:14,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 15:41:14,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:41:14,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386457787] [2023-08-27 15:41:14,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 15:41:14,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509328207] [2023-08-27 15:41:14,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509328207] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:41:14,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:41:14,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 15:41:14,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434543353] [2023-08-27 15:41:14,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:41:14,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 15:41:14,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:41:14,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 15:41:14,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 15:41:14,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 318 [2023-08-27 15:41:14,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:41:14,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:41:14,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 318 [2023-08-27 15:41:14,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:41:14,751 INFO L124 PetriNetUnfolderBase]: 1561/2737 cut-off events. [2023-08-27 15:41:14,751 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2023-08-27 15:41:14,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5940 conditions, 2737 events. 1561/2737 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 16348 event pairs, 651 based on Foata normal form. 0/2009 useless extension candidates. Maximal degree in co-relation 5249. Up to 1319 conditions per place. [2023-08-27 15:41:14,761 INFO L140 encePairwiseOnDemand]: 312/318 looper letters, 72 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2023-08-27 15:41:14,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 84 transitions, 373 flow [2023-08-27 15:41:14,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 15:41:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 15:41:14,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 617 transitions. [2023-08-27 15:41:14,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485062893081761 [2023-08-27 15:41:14,763 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 617 transitions. [2023-08-27 15:41:14,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 617 transitions. [2023-08-27 15:41:14,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:41:14,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 617 transitions. [2023-08-27 15:41:14,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 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 15:41:14,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 318.0) internal successors, (1590), 5 states have internal predecessors, (1590), 0 states have call successors, (0), 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 15:41:14,766 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 318.0) internal successors, (1590), 5 states have internal predecessors, (1590), 0 states have call successors, (0), 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 15:41:14,767 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 116 flow. Second operand 4 states and 617 transitions. [2023-08-27 15:41:14,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 84 transitions, 373 flow [2023-08-27 15:41:14,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 84 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 15:41:14,769 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 156 flow [2023-08-27 15:41:14,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2023-08-27 15:41:14,771 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-27 15:41:14,771 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 156 flow [2023-08-27 15:41:14,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:41:14,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:41:14,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:41:14,791 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 15:41:14,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:41:14,978 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:41:14,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:41:14,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1244802897, now seen corresponding path program 1 times [2023-08-27 15:41:14,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:41:14,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382873428] [2023-08-27 15:41:14,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:14,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:41:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:15,052 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 15:41:15,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:41:15,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382873428] [2023-08-27 15:41:15,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382873428] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:41:15,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:41:15,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 15:41:15,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101764558] [2023-08-27 15:41:15,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:41:15,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:41:15,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:41:15,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:41:15,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:41:15,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 318 [2023-08-27 15:41:15,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 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 15:41:15,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:41:15,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 318 [2023-08-27 15:41:15,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:41:15,234 INFO L124 PetriNetUnfolderBase]: 1842/3083 cut-off events. [2023-08-27 15:41:15,235 INFO L125 PetriNetUnfolderBase]: For 1399/1399 co-relation queries the response was YES. [2023-08-27 15:41:15,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7429 conditions, 3083 events. 1842/3083 cut-off events. For 1399/1399 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16495 event pairs, 819 based on Foata normal form. 0/2356 useless extension candidates. Maximal degree in co-relation 6788. Up to 1508 conditions per place. [2023-08-27 15:41:15,245 INFO L140 encePairwiseOnDemand]: 314/318 looper letters, 68 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-08-27 15:41:15,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 75 transitions, 403 flow [2023-08-27 15:41:15,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:41:15,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:41:15,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 505 transitions. [2023-08-27 15:41:15,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5293501048218029 [2023-08-27 15:41:15,247 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 505 transitions. [2023-08-27 15:41:15,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 505 transitions. [2023-08-27 15:41:15,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:41:15,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 505 transitions. [2023-08-27 15:41:15,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:41:15,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:15,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:15,250 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 156 flow. Second operand 3 states and 505 transitions. [2023-08-27 15:41:15,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 75 transitions, 403 flow [2023-08-27 15:41:15,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 75 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 15:41:15,255 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 167 flow [2023-08-27 15:41:15,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2023-08-27 15:41:15,256 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-08-27 15:41:15,257 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 167 flow [2023-08-27 15:41:15,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 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 15:41:15,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:41:15,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:41:15,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 15:41:15,257 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:41:15,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:41:15,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1244832060, now seen corresponding path program 1 times [2023-08-27 15:41:15,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:41:15,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844419693] [2023-08-27 15:41:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:15,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:41:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:15,321 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 15:41:15,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:41:15,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844419693] [2023-08-27 15:41:15,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844419693] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:41:15,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:41:15,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 15:41:15,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137285341] [2023-08-27 15:41:15,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:41:15,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:41:15,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:41:15,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:41:15,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:41:15,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 318 [2023-08-27 15:41:15,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 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 15:41:15,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:41:15,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 318 [2023-08-27 15:41:15,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:41:15,600 INFO L124 PetriNetUnfolderBase]: 2416/4265 cut-off events. [2023-08-27 15:41:15,601 INFO L125 PetriNetUnfolderBase]: For 2213/2229 co-relation queries the response was YES. [2023-08-27 15:41:15,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10365 conditions, 4265 events. 2416/4265 cut-off events. For 2213/2229 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 26145 event pairs, 1275 based on Foata normal form. 4/3562 useless extension candidates. Maximal degree in co-relation 9664. Up to 2629 conditions per place. [2023-08-27 15:41:15,616 INFO L140 encePairwiseOnDemand]: 313/318 looper letters, 72 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-08-27 15:41:15,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 80 transitions, 441 flow [2023-08-27 15:41:15,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:41:15,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:41:15,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2023-08-27 15:41:15,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324947589098532 [2023-08-27 15:41:15,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2023-08-27 15:41:15,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2023-08-27 15:41:15,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:41:15,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2023-08-27 15:41:15,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 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 15:41:15,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:15,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:15,620 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 167 flow. Second operand 3 states and 508 transitions. [2023-08-27 15:41:15,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 80 transitions, 441 flow [2023-08-27 15:41:15,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 80 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 15:41:15,623 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 180 flow [2023-08-27 15:41:15,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2023-08-27 15:41:15,624 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-08-27 15:41:15,624 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 180 flow [2023-08-27 15:41:15,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 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 15:41:15,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:41:15,624 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 15:41:15,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 15:41:15,625 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:41:15,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:41:15,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1396574429, now seen corresponding path program 1 times [2023-08-27 15:41:15,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:41:15,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047960045] [2023-08-27 15:41:15,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:15,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:41:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:41:15,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:41:15,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047960045] [2023-08-27 15:41:15,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047960045] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:41:15,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020276166] [2023-08-27 15:41:15,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:15,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:41:15,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:41:15,658 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 15:41:15,660 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 15:41:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:15,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 15:41:15,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:41:15,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:41:15,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 15:41:15,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020276166] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:41:15,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 15:41:15,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 15:41:15,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986482081] [2023-08-27 15:41:15,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:41:15,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 15:41:15,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:41:15,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 15:41:15,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:41:15,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 318 [2023-08-27 15:41:15,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 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 15:41:15,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:41:15,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 318 [2023-08-27 15:41:15,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:41:15,995 INFO L124 PetriNetUnfolderBase]: 2390/4101 cut-off events. [2023-08-27 15:41:15,995 INFO L125 PetriNetUnfolderBase]: For 1988/1988 co-relation queries the response was YES. [2023-08-27 15:41:15,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10708 conditions, 4101 events. 2390/4101 cut-off events. For 1988/1988 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 24499 event pairs, 67 based on Foata normal form. 0/3615 useless extension candidates. Maximal degree in co-relation 10274. Up to 3230 conditions per place. [2023-08-27 15:41:16,011 INFO L140 encePairwiseOnDemand]: 315/318 looper letters, 74 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-08-27 15:41:16,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 452 flow [2023-08-27 15:41:16,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 15:41:16,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 15:41:16,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2023-08-27 15:41:16,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055031446540881 [2023-08-27 15:41:16,012 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2023-08-27 15:41:16,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2023-08-27 15:41:16,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:41:16,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2023-08-27 15:41:16,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 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 15:41:16,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 318.0) internal successors, (1590), 5 states have internal predecessors, (1590), 0 states have call successors, (0), 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 15:41:16,016 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 318.0) internal successors, (1590), 5 states have internal predecessors, (1590), 0 states have call successors, (0), 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 15:41:16,016 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 180 flow. Second operand 4 states and 643 transitions. [2023-08-27 15:41:16,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 452 flow [2023-08-27 15:41:16,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 83 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 15:41:16,021 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 180 flow [2023-08-27 15:41:16,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2023-08-27 15:41:16,022 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-27 15:41:16,023 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 180 flow [2023-08-27 15:41:16,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 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 15:41:16,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:41:16,023 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 15:41:16,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 15:41:16,228 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,SelfDestructingSolverStorable5 [2023-08-27 15:41:16,228 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:41:16,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:41:16,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1396574497, now seen corresponding path program 1 times [2023-08-27 15:41:16,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:41:16,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125528099] [2023-08-27 15:41:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:16,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:41:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 15:41:16,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:41:16,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125528099] [2023-08-27 15:41:16,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125528099] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:41:16,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:41:16,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 15:41:16,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675572883] [2023-08-27 15:41:16,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:41:16,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:41:16,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:41:16,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:41:16,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:41:16,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 318 [2023-08-27 15:41:16,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 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 15:41:16,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:41:16,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 318 [2023-08-27 15:41:16,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:41:16,434 INFO L124 PetriNetUnfolderBase]: 1960/3497 cut-off events. [2023-08-27 15:41:16,434 INFO L125 PetriNetUnfolderBase]: For 2228/2228 co-relation queries the response was YES. [2023-08-27 15:41:16,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9044 conditions, 3497 events. 1960/3497 cut-off events. For 2228/2228 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 20686 event pairs, 499 based on Foata normal form. 150/3285 useless extension candidates. Maximal degree in co-relation 4266. Up to 2317 conditions per place. [2023-08-27 15:41:16,445 INFO L140 encePairwiseOnDemand]: 314/318 looper letters, 54 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2023-08-27 15:41:16,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 356 flow [2023-08-27 15:41:16,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:41:16,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:41:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-08-27 15:41:16,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062893081761006 [2023-08-27 15:41:16,446 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-08-27 15:41:16,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-08-27 15:41:16,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:41:16,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-08-27 15:41:16,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 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 15:41:16,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:16,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:16,449 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 180 flow. Second operand 3 states and 483 transitions. [2023-08-27 15:41:16,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 356 flow [2023-08-27 15:41:16,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 66 transitions, 352 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 15:41:16,454 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 194 flow [2023-08-27 15:41:16,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2023-08-27 15:41:16,454 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-27 15:41:16,455 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 194 flow [2023-08-27 15:41:16,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 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 15:41:16,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:41:16,455 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:41:16,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 15:41:16,455 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:41:16,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:41:16,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1116499706, now seen corresponding path program 1 times [2023-08-27 15:41:16,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:41:16,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63770841] [2023-08-27 15:41:16,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:16,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:41:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:41:16,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:41:16,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63770841] [2023-08-27 15:41:16,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63770841] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:41:16,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992409499] [2023-08-27 15:41:16,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:16,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:41:16,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:41:16,490 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 15:41:16,492 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 15:41:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:16,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 15:41:16,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:41:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:41:16,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 15:41:16,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992409499] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:41:16,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 15:41:16,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 15:41:16,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161708594] [2023-08-27 15:41:16,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:41:16,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 15:41:16,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:41:16,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 15:41:16,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:41:16,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 318 [2023-08-27 15:41:16,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 0 states have call successors, (0), 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 15:41:16,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:41:16,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 318 [2023-08-27 15:41:16,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:41:16,790 INFO L124 PetriNetUnfolderBase]: 1792/3172 cut-off events. [2023-08-27 15:41:16,791 INFO L125 PetriNetUnfolderBase]: For 3742/3750 co-relation queries the response was YES. [2023-08-27 15:41:16,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8629 conditions, 3172 events. 1792/3172 cut-off events. For 3742/3750 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 17537 event pairs, 78 based on Foata normal form. 4/2913 useless extension candidates. Maximal degree in co-relation 7923. Up to 1667 conditions per place. [2023-08-27 15:41:16,799 INFO L140 encePairwiseOnDemand]: 315/318 looper letters, 90 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-08-27 15:41:16,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 98 transitions, 626 flow [2023-08-27 15:41:16,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 15:41:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 15:41:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 663 transitions. [2023-08-27 15:41:16,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212264150943396 [2023-08-27 15:41:16,801 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 663 transitions. [2023-08-27 15:41:16,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 663 transitions. [2023-08-27 15:41:16,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:41:16,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 663 transitions. [2023-08-27 15:41:16,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.75) internal successors, (663), 4 states have internal predecessors, (663), 0 states have call successors, (0), 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 15:41:16,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 318.0) internal successors, (1590), 5 states have internal predecessors, (1590), 0 states have call successors, (0), 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 15:41:16,804 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 318.0) internal successors, (1590), 5 states have internal predecessors, (1590), 0 states have call successors, (0), 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 15:41:16,804 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 194 flow. Second operand 4 states and 663 transitions. [2023-08-27 15:41:16,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 98 transitions, 626 flow [2023-08-27 15:41:16,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 98 transitions, 608 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 15:41:16,806 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 188 flow [2023-08-27 15:41:16,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-08-27 15:41:16,807 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-08-27 15:41:16,807 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 188 flow [2023-08-27 15:41:16,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 0 states have call successors, (0), 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 15:41:16,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:41:16,807 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:41:16,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 15:41:17,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:41:17,012 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:41:17,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:41:17,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1116499742, now seen corresponding path program 1 times [2023-08-27 15:41:17,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:41:17,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579308876] [2023-08-27 15:41:17,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:17,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:41:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 15:41:17,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:41:17,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579308876] [2023-08-27 15:41:17,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579308876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:41:17,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:41:17,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 15:41:17,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585981561] [2023-08-27 15:41:17,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:41:17,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:41:17,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:41:17,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:41:17,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:41:17,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 318 [2023-08-27 15:41:17,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 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 15:41:17,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:41:17,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 318 [2023-08-27 15:41:17,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:41:17,193 INFO L124 PetriNetUnfolderBase]: 1666/2990 cut-off events. [2023-08-27 15:41:17,193 INFO L125 PetriNetUnfolderBase]: For 2941/2961 co-relation queries the response was YES. [2023-08-27 15:41:17,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8074 conditions, 2990 events. 1666/2990 cut-off events. For 2941/2961 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 16600 event pairs, 330 based on Foata normal form. 8/2813 useless extension candidates. Maximal degree in co-relation 7413. Up to 1960 conditions per place. [2023-08-27 15:41:17,202 INFO L140 encePairwiseOnDemand]: 314/318 looper letters, 57 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2023-08-27 15:41:17,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 67 transitions, 415 flow [2023-08-27 15:41:17,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:41:17,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:41:17,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2023-08-27 15:41:17,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136268343815513 [2023-08-27 15:41:17,204 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2023-08-27 15:41:17,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2023-08-27 15:41:17,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:41:17,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2023-08-27 15:41:17,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 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 15:41:17,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:17,206 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:17,206 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 188 flow. Second operand 3 states and 490 transitions. [2023-08-27 15:41:17,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 67 transitions, 415 flow [2023-08-27 15:41:17,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 67 transitions, 412 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 15:41:17,209 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 197 flow [2023-08-27 15:41:17,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-08-27 15:41:17,210 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-08-27 15:41:17,210 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 197 flow [2023-08-27 15:41:17,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 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 15:41:17,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:41:17,210 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:41:17,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 15:41:17,210 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:41:17,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:41:17,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1068935550, now seen corresponding path program 1 times [2023-08-27 15:41:17,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:41:17,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332610292] [2023-08-27 15:41:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:17,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:41:17,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 15:41:17,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127213079] [2023-08-27 15:41:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:17,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:41:17,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:41:17,220 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 15:41:17,222 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 15:41:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:17,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 15:41:17,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:41:17,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:41:17,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 15:41:17,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:41:17,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332610292] [2023-08-27 15:41:17,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 15:41:17,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127213079] [2023-08-27 15:41:17,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127213079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:41:17,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:41:17,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 15:41:17,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70581435] [2023-08-27 15:41:17,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:41:17,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 15:41:17,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:41:17,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 15:41:17,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 15:41:17,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 318 [2023-08-27 15:41:17,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 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 15:41:17,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:41:17,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 318 [2023-08-27 15:41:17,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:41:17,461 INFO L124 PetriNetUnfolderBase]: 1369/2521 cut-off events. [2023-08-27 15:41:17,461 INFO L125 PetriNetUnfolderBase]: For 3344/3356 co-relation queries the response was YES. [2023-08-27 15:41:17,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7172 conditions, 2521 events. 1369/2521 cut-off events. For 3344/3356 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 13631 event pairs, 1079 based on Foata normal form. 112/2525 useless extension candidates. Maximal degree in co-relation 6531. Up to 2196 conditions per place. [2023-08-27 15:41:17,469 INFO L140 encePairwiseOnDemand]: 315/318 looper letters, 35 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-27 15:41:17,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 42 transitions, 251 flow [2023-08-27 15:41:17,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:41:17,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:41:17,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-08-27 15:41:17,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4727463312368973 [2023-08-27 15:41:17,470 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-08-27 15:41:17,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-08-27 15:41:17,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:41:17,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-08-27 15:41:17,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 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 15:41:17,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:17,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:17,472 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 197 flow. Second operand 3 states and 451 transitions. [2023-08-27 15:41:17,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 42 transitions, 251 flow [2023-08-27 15:41:17,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 42 transitions, 241 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 15:41:17,475 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 171 flow [2023-08-27 15:41:17,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-08-27 15:41:17,476 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-08-27 15:41:17,476 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 171 flow [2023-08-27 15:41:17,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 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 15:41:17,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:41:17,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:41:17,483 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 15:41:17,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:41:17,681 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:41:17,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:41:17,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1700249114, now seen corresponding path program 1 times [2023-08-27 15:41:17,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:41:17,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185809389] [2023-08-27 15:41:17,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:17,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:41:17,691 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 15:41:17,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267980607] [2023-08-27 15:41:17,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:17,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:41:17,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:41:17,692 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 15:41:17,693 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 15:41:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:17,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 15:41:17,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:41:17,804 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 15:41:17,812 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 15:41:17,812 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 15:41:17,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:41:17,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185809389] [2023-08-27 15:41:17,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 15:41:17,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267980607] [2023-08-27 15:41:17,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267980607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:41:17,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:41:17,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 15:41:17,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874510037] [2023-08-27 15:41:17,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:41:17,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:41:17,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:41:17,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:41:17,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:41:17,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 318 [2023-08-27 15:41:17,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 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 15:41:17,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:41:17,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 318 [2023-08-27 15:41:17,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:41:17,947 INFO L124 PetriNetUnfolderBase]: 1088/1977 cut-off events. [2023-08-27 15:41:17,947 INFO L125 PetriNetUnfolderBase]: For 2271/2271 co-relation queries the response was YES. [2023-08-27 15:41:17,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5834 conditions, 1977 events. 1088/1977 cut-off events. For 2271/2271 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 10172 event pairs, 269 based on Foata normal form. 134/2063 useless extension candidates. Maximal degree in co-relation 5819. Up to 1289 conditions per place. [2023-08-27 15:41:17,952 INFO L140 encePairwiseOnDemand]: 314/318 looper letters, 45 selfloop transitions, 6 changer transitions 2/57 dead transitions. [2023-08-27 15:41:17,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 357 flow [2023-08-27 15:41:17,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:41:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:41:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-08-27 15:41:17,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4832285115303983 [2023-08-27 15:41:17,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-08-27 15:41:17,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-08-27 15:41:17,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:41:17,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-08-27 15:41:17,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 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 15:41:17,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:17,956 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:17,956 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 171 flow. Second operand 3 states and 461 transitions. [2023-08-27 15:41:17,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 357 flow [2023-08-27 15:41:17,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 354 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 15:41:17,958 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 178 flow [2023-08-27 15:41:17,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-08-27 15:41:17,958 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-08-27 15:41:17,958 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 178 flow [2023-08-27 15:41:17,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 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 15:41:17,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:41:17,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:41:17,965 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 15:41:18,163 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 15:41:18,163 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:41:18,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:41:18,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1868646620, now seen corresponding path program 1 times [2023-08-27 15:41:18,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:41:18,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475621512] [2023-08-27 15:41:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:18,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:41:18,173 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 15:41:18,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478833710] [2023-08-27 15:41:18,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:18,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:41:18,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:41:18,176 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 15:41:18,232 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 15:41:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:18,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 15:41:18,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:41:18,509 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 15:41:18,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 15:41:18,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:41:18,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475621512] [2023-08-27 15:41:18,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 15:41:18,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478833710] [2023-08-27 15:41:18,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478833710] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:41:18,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:41:18,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 15:41:18,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250504690] [2023-08-27 15:41:18,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:41:18,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 15:41:18,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:41:18,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 15:41:18,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 15:41:18,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 318 [2023-08-27 15:41:18,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 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 15:41:18,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:41:18,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 318 [2023-08-27 15:41:18,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:41:18,663 INFO L124 PetriNetUnfolderBase]: 1200/2298 cut-off events. [2023-08-27 15:41:18,664 INFO L125 PetriNetUnfolderBase]: For 2877/2884 co-relation queries the response was YES. [2023-08-27 15:41:18,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6876 conditions, 2298 events. 1200/2298 cut-off events. For 2877/2884 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12150 event pairs, 345 based on Foata normal form. 1/2251 useless extension candidates. Maximal degree in co-relation 6861. Up to 934 conditions per place. [2023-08-27 15:41:18,671 INFO L140 encePairwiseOnDemand]: 314/318 looper letters, 70 selfloop transitions, 4 changer transitions 4/84 dead transitions. [2023-08-27 15:41:18,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 84 transitions, 521 flow [2023-08-27 15:41:18,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 15:41:18,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 15:41:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 611 transitions. [2023-08-27 15:41:18,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803459119496855 [2023-08-27 15:41:18,673 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 611 transitions. [2023-08-27 15:41:18,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 611 transitions. [2023-08-27 15:41:18,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:41:18,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 611 transitions. [2023-08-27 15:41:18,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 0 states have call successors, (0), 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 15:41:18,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 318.0) internal successors, (1590), 5 states have internal predecessors, (1590), 0 states have call successors, (0), 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 15:41:18,676 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 318.0) internal successors, (1590), 5 states have internal predecessors, (1590), 0 states have call successors, (0), 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 15:41:18,676 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 178 flow. Second operand 4 states and 611 transitions. [2023-08-27 15:41:18,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 84 transitions, 521 flow [2023-08-27 15:41:18,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 84 transitions, 509 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 15:41:18,679 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 197 flow [2023-08-27 15:41:18,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-08-27 15:41:18,679 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-08-27 15:41:18,679 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 197 flow [2023-08-27 15:41:18,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 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 15:41:18,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:41:18,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:41:18,687 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 15:41:18,887 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 15:41:18,889 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:41:18,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:41:18,890 INFO L85 PathProgramCache]: Analyzing trace with hash -37973433, now seen corresponding path program 1 times [2023-08-27 15:41:18,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:41:18,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045051336] [2023-08-27 15:41:18,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:18,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:41:18,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 15:41:18,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740967374] [2023-08-27 15:41:18,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:18,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:41:18,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:41:18,929 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 15:41:18,931 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 15:41:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:19,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-27 15:41:19,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:41:19,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 15:41:19,107 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2023-08-27 15:41:19,118 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-27 15:41:19,118 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-08-27 15:41:19,143 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 13 treesize of output 15 [2023-08-27 15:41:19,186 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 51 treesize of output 44 [2023-08-27 15:41:19,249 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 51 treesize of output 45 [2023-08-27 15:41:19,295 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 15:41:19,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 15:41:19,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:41:19,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045051336] [2023-08-27 15:41:19,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 15:41:19,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740967374] [2023-08-27 15:41:19,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740967374] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:41:19,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:41:19,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 15:41:19,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471554853] [2023-08-27 15:41:19,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:41:19,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 15:41:19,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:41:19,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 15:41:19,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 15:41:19,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 318 [2023-08-27 15:41:19,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 197 flow. Second operand has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 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 15:41:19,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:41:19,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 318 [2023-08-27 15:41:19,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:41:19,775 INFO L124 PetriNetUnfolderBase]: 1511/2878 cut-off events. [2023-08-27 15:41:19,775 INFO L125 PetriNetUnfolderBase]: For 3745/3761 co-relation queries the response was YES. [2023-08-27 15:41:19,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8533 conditions, 2878 events. 1511/2878 cut-off events. For 3745/3761 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 16182 event pairs, 472 based on Foata normal form. 12/2866 useless extension candidates. Maximal degree in co-relation 8515. Up to 1377 conditions per place. [2023-08-27 15:41:19,799 INFO L140 encePairwiseOnDemand]: 310/318 looper letters, 77 selfloop transitions, 11 changer transitions 9/103 dead transitions. [2023-08-27 15:41:19,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 103 transitions, 635 flow [2023-08-27 15:41:19,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 15:41:19,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 15:41:19,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 864 transitions. [2023-08-27 15:41:19,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3881401617250674 [2023-08-27 15:41:19,802 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 864 transitions. [2023-08-27 15:41:19,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 864 transitions. [2023-08-27 15:41:19,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:41:19,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 864 transitions. [2023-08-27 15:41:19,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.42857142857143) internal successors, (864), 7 states have internal predecessors, (864), 0 states have call successors, (0), 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 15:41:19,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 318.0) internal successors, (2544), 8 states have internal predecessors, (2544), 0 states have call successors, (0), 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 15:41:19,806 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 318.0) internal successors, (2544), 8 states have internal predecessors, (2544), 0 states have call successors, (0), 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 15:41:19,806 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 197 flow. Second operand 7 states and 864 transitions. [2023-08-27 15:41:19,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 103 transitions, 635 flow [2023-08-27 15:41:19,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 103 transitions, 625 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 15:41:19,810 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 271 flow [2023-08-27 15:41:19,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=271, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2023-08-27 15:41:19,810 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2023-08-27 15:41:19,810 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 271 flow [2023-08-27 15:41:19,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 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 15:41:19,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:41:19,811 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:41:19,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-27 15:41:20,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:41:20,029 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:41:20,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:41:20,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1438327518, now seen corresponding path program 1 times [2023-08-27 15:41:20,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:41:20,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453495588] [2023-08-27 15:41:20,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:20,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:41:20,041 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 15:41:20,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763151981] [2023-08-27 15:41:20,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:20,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:41:20,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:41:20,042 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:41:20,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 15:41:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:20,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-27 15:41:20,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:41:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:41:20,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 15:41:20,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:41:20,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453495588] [2023-08-27 15:41:20,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 15:41:20,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763151981] [2023-08-27 15:41:20,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763151981] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:41:20,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:41:20,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 15:41:20,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879396103] [2023-08-27 15:41:20,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:41:20,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:41:20,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:41:20,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:41:20,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:41:20,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 318 [2023-08-27 15:41:20,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 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 15:41:20,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:41:20,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 318 [2023-08-27 15:41:20,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:41:20,307 INFO L124 PetriNetUnfolderBase]: 1093/2062 cut-off events. [2023-08-27 15:41:20,307 INFO L125 PetriNetUnfolderBase]: For 3653/3653 co-relation queries the response was YES. [2023-08-27 15:41:20,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6459 conditions, 2062 events. 1093/2062 cut-off events. For 3653/3653 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9355 event pairs, 351 based on Foata normal form. 50/2112 useless extension candidates. Maximal degree in co-relation 6437. Up to 1292 conditions per place. [2023-08-27 15:41:20,313 INFO L140 encePairwiseOnDemand]: 314/318 looper letters, 53 selfloop transitions, 2 changer transitions 7/65 dead transitions. [2023-08-27 15:41:20,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 65 transitions, 466 flow [2023-08-27 15:41:20,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:41:20,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:41:20,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-08-27 15:41:20,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2023-08-27 15:41:20,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-08-27 15:41:20,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-08-27 15:41:20,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:41:20,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-08-27 15:41:20,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 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 15:41:20,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:20,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 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 15:41:20,316 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 271 flow. Second operand 3 states and 486 transitions. [2023-08-27 15:41:20,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 65 transitions, 466 flow [2023-08-27 15:41:20,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 65 transitions, 452 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-27 15:41:20,319 INFO L231 Difference]: Finished difference. Result has 64 places, 45 transitions, 240 flow [2023-08-27 15:41:20,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=64, PETRI_TRANSITIONS=45} [2023-08-27 15:41:20,319 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2023-08-27 15:41:20,319 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 240 flow [2023-08-27 15:41:20,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 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 15:41:20,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:41:20,320 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:41:20,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-27 15:41:20,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 15:41:20,524 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:41:20,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:41:20,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2039589352, now seen corresponding path program 1 times [2023-08-27 15:41:20,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:41:20,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891450445] [2023-08-27 15:41:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:20,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:41:20,536 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 15:41:20,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966891930] [2023-08-27 15:41:20,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:20,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:41:20,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:41:20,553 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:41:20,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 15:41:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:21,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 15:41:21,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:41:21,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:41:21,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:41:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:41:21,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:41:21,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891450445] [2023-08-27 15:41:21,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 15:41:21,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966891930] [2023-08-27 15:41:21,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966891930] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:41:21,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 15:41:21,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-08-27 15:41:21,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176332389] [2023-08-27 15:41:21,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 15:41:21,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 15:41:21,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:41:21,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 15:41:21,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-27 15:41:21,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 318 [2023-08-27 15:41:21,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 45 transitions, 240 flow. Second operand has 12 states, 12 states have (on average 138.58333333333334) internal successors, (1663), 12 states have internal predecessors, (1663), 0 states have call successors, (0), 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 15:41:21,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:41:21,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 318 [2023-08-27 15:41:21,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:41:24,450 INFO L124 PetriNetUnfolderBase]: 895/1768 cut-off events. [2023-08-27 15:41:24,450 INFO L125 PetriNetUnfolderBase]: For 2824/2824 co-relation queries the response was YES. [2023-08-27 15:41:24,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5558 conditions, 1768 events. 895/1768 cut-off events. For 2824/2824 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 6763 event pairs, 188 based on Foata normal form. 20/1788 useless extension candidates. Maximal degree in co-relation 5535. Up to 313 conditions per place. [2023-08-27 15:41:24,455 INFO L140 encePairwiseOnDemand]: 313/318 looper letters, 116 selfloop transitions, 11 changer transitions 8/140 dead transitions. [2023-08-27 15:41:24,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 140 transitions, 937 flow [2023-08-27 15:41:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 15:41:24,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 15:41:24,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1460 transitions. [2023-08-27 15:41:24,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591194968553459 [2023-08-27 15:41:24,458 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1460 transitions. [2023-08-27 15:41:24,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1460 transitions. [2023-08-27 15:41:24,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:41:24,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1460 transitions. [2023-08-27 15:41:24,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 146.0) internal successors, (1460), 10 states have internal predecessors, (1460), 0 states have call successors, (0), 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 15:41:24,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 318.0) internal successors, (3498), 11 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 15:41:24,464 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 318.0) internal successors, (3498), 11 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 15:41:24,464 INFO L175 Difference]: Start difference. First operand has 64 places, 45 transitions, 240 flow. Second operand 10 states and 1460 transitions. [2023-08-27 15:41:24,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 140 transitions, 937 flow [2023-08-27 15:41:24,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 140 transitions, 933 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 15:41:24,467 INFO L231 Difference]: Finished difference. Result has 72 places, 51 transitions, 293 flow [2023-08-27 15:41:24,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=293, PETRI_PLACES=72, PETRI_TRANSITIONS=51} [2023-08-27 15:41:24,468 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2023-08-27 15:41:24,468 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 51 transitions, 293 flow [2023-08-27 15:41:24,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 138.58333333333334) internal successors, (1663), 12 states have internal predecessors, (1663), 0 states have call successors, (0), 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 15:41:24,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:41:24,468 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:41:24,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-27 15:41:24,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 15:41:24,674 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:41:24,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:41:24,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1243298773, now seen corresponding path program 1 times [2023-08-27 15:41:24,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:41:24,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376397819] [2023-08-27 15:41:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:24,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:41:24,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 15:41:24,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644372000] [2023-08-27 15:41:24,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:41:24,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:41:24,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:41:24,698 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:41:24,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 15:41:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:41:24,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-27 15:41:24,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:41:25,108 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 13 treesize of output 9 [2023-08-27 15:41:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:41:25,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:41:25,360 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 40 treesize of output 36 [2023-08-27 15:41:25,368 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:41:25,368 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 75 [2023-08-27 15:41:25,464 INFO L322 Elim1Store]: treesize reduction 50, result has 51.0 percent of original size [2023-08-27 15:41:25,465 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 127 treesize of output 127 [2023-08-27 15:41:25,520 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:41:25,520 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 120 treesize of output 85 [2023-08-27 15:41:33,709 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:41:33,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:41:33,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376397819] [2023-08-27 15:41:33,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 15:41:33,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644372000] [2023-08-27 15:41:33,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644372000] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:41:33,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 15:41:33,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2023-08-27 15:41:33,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830710804] [2023-08-27 15:41:33,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 15:41:33,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 15:41:33,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:41:33,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 15:41:33,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-08-27 15:41:33,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 318 [2023-08-27 15:41:33,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 51 transitions, 293 flow. Second operand has 27 states, 27 states have (on average 94.37037037037037) internal successors, (2548), 27 states have internal predecessors, (2548), 0 states have call successors, (0), 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 15:41:33,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:41:33,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 318 [2023-08-27 15:41:33,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:43:16,190 INFO L124 PetriNetUnfolderBase]: 2974/5677 cut-off events. [2023-08-27 15:43:16,190 INFO L125 PetriNetUnfolderBase]: For 8594/8594 co-relation queries the response was YES. [2023-08-27 15:43:16,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17846 conditions, 5677 events. 2974/5677 cut-off events. For 8594/8594 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 30875 event pairs, 225 based on Foata normal form. 145/5822 useless extension candidates. Maximal degree in co-relation 17820. Up to 1010 conditions per place. [2023-08-27 15:43:16,207 INFO L140 encePairwiseOnDemand]: 300/318 looper letters, 336 selfloop transitions, 171 changer transitions 60/570 dead transitions. [2023-08-27 15:43:16,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 570 transitions, 3853 flow [2023-08-27 15:43:16,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-08-27 15:43:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-08-27 15:43:16,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 7115 transitions. [2023-08-27 15:43:16,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31075296995108315 [2023-08-27 15:43:16,248 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 7115 transitions. [2023-08-27 15:43:16,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 7115 transitions. [2023-08-27 15:43:16,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:43:16,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 7115 transitions. [2023-08-27 15:43:16,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 98.81944444444444) internal successors, (7115), 72 states have internal predecessors, (7115), 0 states have call successors, (0), 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 15:43:16,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 318.0) internal successors, (23214), 73 states have internal predecessors, (23214), 0 states have call successors, (0), 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 15:43:16,304 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 318.0) internal successors, (23214), 73 states have internal predecessors, (23214), 0 states have call successors, (0), 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 15:43:16,304 INFO L175 Difference]: Start difference. First operand has 72 places, 51 transitions, 293 flow. Second operand 72 states and 7115 transitions. [2023-08-27 15:43:16,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 570 transitions, 3853 flow [2023-08-27 15:43:16,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 570 transitions, 3781 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-08-27 15:43:16,320 INFO L231 Difference]: Finished difference. Result has 164 places, 224 transitions, 1822 flow [2023-08-27 15:43:16,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=1822, PETRI_PLACES=164, PETRI_TRANSITIONS=224} [2023-08-27 15:43:16,321 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 122 predicate places. [2023-08-27 15:43:16,321 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 224 transitions, 1822 flow [2023-08-27 15:43:16,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 94.37037037037037) internal successors, (2548), 27 states have internal predecessors, (2548), 0 states have call successors, (0), 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 15:43:16,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:43:16,322 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:43:16,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-27 15:43:16,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 15:43:16,528 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:43:16,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:43:16,528 INFO L85 PathProgramCache]: Analyzing trace with hash -627369711, now seen corresponding path program 2 times [2023-08-27 15:43:16,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:43:16,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180078035] [2023-08-27 15:43:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:43:16,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:43:16,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 15:43:16,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704011063] [2023-08-27 15:43:16,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 15:43:16,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:43:16,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:43:16,551 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:43:16,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 15:43:16,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 15:43:16,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:43:16,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-27 15:43:16,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:43:17,240 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 15:43:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:43:17,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:43:18,172 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 40 treesize of output 36 [2023-08-27 15:43:18,263 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:43:18,263 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 75 [2023-08-27 15:43:19,406 INFO L217 Elim1Store]: Index analysis took 122 ms [2023-08-27 15:43:19,715 INFO L322 Elim1Store]: treesize reduction 50, result has 51.0 percent of original size [2023-08-27 15:43:19,715 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 126 [2023-08-27 15:43:21,216 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:43:21,217 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 85 [2023-08-27 15:43:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:43:55,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:43:55,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180078035] [2023-08-27 15:43:55,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 15:43:55,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704011063] [2023-08-27 15:43:55,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704011063] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:43:55,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 15:43:55,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 27 [2023-08-27 15:43:55,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698343132] [2023-08-27 15:43:55,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 15:43:55,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 15:43:55,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:43:55,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 15:43:55,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2023-08-27 15:43:55,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 318 [2023-08-27 15:43:55,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 224 transitions, 1822 flow. Second operand has 29 states, 29 states have (on average 94.13793103448276) internal successors, (2730), 29 states have internal predecessors, (2730), 0 states have call successors, (0), 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 15:43:55,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:43:55,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 318 [2023-08-27 15:43:55,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:44:38,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-27 15:44:47,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-27 15:45:08,226 WARN L234 SmtUtils]: Spent 7.37s on a formula simplification. DAG size of input: 66 DAG size of output: 62 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:45:26,129 WARN L234 SmtUtils]: Spent 8.58s on a formula simplification. DAG size of input: 85 DAG size of output: 81 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:46:01,391 WARN L234 SmtUtils]: Spent 19.03s on a formula simplification. DAG size of input: 85 DAG size of output: 74 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:46:16,722 WARN L234 SmtUtils]: Spent 13.33s on a formula simplification. DAG size of input: 86 DAG size of output: 75 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:46:34,876 WARN L234 SmtUtils]: Spent 12.42s on a formula simplification. DAG size of input: 81 DAG size of output: 77 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:46:57,790 INFO L124 PetriNetUnfolderBase]: 4610/8897 cut-off events. [2023-08-27 15:46:57,790 INFO L125 PetriNetUnfolderBase]: For 52528/52540 co-relation queries the response was YES. [2023-08-27 15:46:57,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37846 conditions, 8897 events. 4610/8897 cut-off events. For 52528/52540 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 53724 event pairs, 483 based on Foata normal form. 102/8987 useless extension candidates. Maximal degree in co-relation 37796. Up to 1803 conditions per place. [2023-08-27 15:46:57,833 INFO L140 encePairwiseOnDemand]: 299/318 looper letters, 443 selfloop transitions, 253 changer transitions 63/776 dead transitions. [2023-08-27 15:46:57,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 776 transitions, 7125 flow [2023-08-27 15:46:57,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-08-27 15:46:57,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2023-08-27 15:46:57,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 7275 transitions. [2023-08-27 15:46:57,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3091534931157573 [2023-08-27 15:46:57,840 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 7275 transitions. [2023-08-27 15:46:57,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 7275 transitions. [2023-08-27 15:46:57,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:46:57,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 7275 transitions. [2023-08-27 15:46:57,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 98.3108108108108) internal successors, (7275), 74 states have internal predecessors, (7275), 0 states have call successors, (0), 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 15:46:57,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 318.0) internal successors, (23850), 75 states have internal predecessors, (23850), 0 states have call successors, (0), 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 15:46:57,863 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 318.0) internal successors, (23850), 75 states have internal predecessors, (23850), 0 states have call successors, (0), 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 15:46:57,863 INFO L175 Difference]: Start difference. First operand has 164 places, 224 transitions, 1822 flow. Second operand 74 states and 7275 transitions. [2023-08-27 15:46:57,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 776 transitions, 7125 flow [2023-08-27 15:46:58,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 776 transitions, 6912 flow, removed 103 selfloop flow, removed 2 redundant places. [2023-08-27 15:46:58,216 INFO L231 Difference]: Finished difference. Result has 273 places, 399 transitions, 4171 flow [2023-08-27 15:46:58,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=4171, PETRI_PLACES=273, PETRI_TRANSITIONS=399} [2023-08-27 15:46:58,216 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 231 predicate places. [2023-08-27 15:46:58,216 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 399 transitions, 4171 flow [2023-08-27 15:46:58,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 94.13793103448276) internal successors, (2730), 29 states have internal predecessors, (2730), 0 states have call successors, (0), 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 15:46:58,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:46:58,217 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:46:58,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 15:46:58,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 15:46:58,423 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:46:58,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:46:58,424 INFO L85 PathProgramCache]: Analyzing trace with hash -841286149, now seen corresponding path program 1 times [2023-08-27 15:46:58,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:46:58,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822083341] [2023-08-27 15:46:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:46:58,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:46:58,492 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 15:46:58,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552548646] [2023-08-27 15:46:58,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:46:58,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:46:58,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:46:58,494 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:46:58,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 15:46:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:46:58,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 15:46:58,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:46:59,176 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 53 treesize of output 48 [2023-08-27 15:46:59,179 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 90 [2023-08-27 15:46:59,185 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 15:46:59,186 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 44 treesize of output 3 [2023-08-27 15:46:59,374 INFO L322 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2023-08-27 15:46:59,374 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 23 treesize of output 10 [2023-08-27 15:46:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:46:59,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:46:59,555 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 40 treesize of output 36 [2023-08-27 15:46:59,563 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:46:59,564 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 75 [2023-08-27 15:46:59,595 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:46:59,598 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2023-08-27 15:46:59,637 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:46:59,637 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 163 treesize of output 131 [2023-08-27 15:47:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:47:12,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:47:12,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822083341] [2023-08-27 15:47:12,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 15:47:12,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552548646] [2023-08-27 15:47:12,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552548646] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:47:12,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 15:47:12,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2023-08-27 15:47:12,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902934955] [2023-08-27 15:47:12,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 15:47:12,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 15:47:12,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:47:12,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 15:47:12,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2023-08-27 15:47:12,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 318 [2023-08-27 15:47:12,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 399 transitions, 4171 flow. Second operand has 30 states, 30 states have (on average 100.33333333333333) internal successors, (3010), 30 states have internal predecessors, (3010), 0 states have call successors, (0), 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 15:47:12,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:47:12,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 318 [2023-08-27 15:47:12,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:47:26,347 WARN L234 SmtUtils]: Spent 6.76s on a formula simplification. DAG size of input: 91 DAG size of output: 61 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:47:37,125 WARN L234 SmtUtils]: Spent 6.98s on a formula simplification. DAG size of input: 88 DAG size of output: 58 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:47:40,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-27 15:47:43,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-27 15:48:01,297 WARN L234 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 89 DAG size of output: 57 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:48:15,970 WARN L234 SmtUtils]: Spent 8.17s on a formula simplification. DAG size of input: 105 DAG size of output: 73 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:48:19,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-27 15:48:29,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-27 15:48:31,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-27 15:48:35,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-27 15:48:57,428 WARN L234 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 78 DAG size of output: 53 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:49:01,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-27 15:49:17,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-27 15:49:19,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-27 15:49:23,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-27 15:49:26,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-27 15:49:31,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-27 15:49:33,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-27 15:49:36,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-27 15:49:40,273 INFO L124 PetriNetUnfolderBase]: 8696/17121 cut-off events. [2023-08-27 15:49:40,296 INFO L125 PetriNetUnfolderBase]: For 294964/294974 co-relation queries the response was YES. [2023-08-27 15:49:40,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96046 conditions, 17121 events. 8696/17121 cut-off events. For 294964/294974 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 122190 event pairs, 899 based on Foata normal form. 191/17302 useless extension candidates. Maximal degree in co-relation 95957. Up to 3143 conditions per place. [2023-08-27 15:49:40,405 INFO L140 encePairwiseOnDemand]: 303/318 looper letters, 538 selfloop transitions, 568 changer transitions 87/1212 dead transitions. [2023-08-27 15:49:40,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1212 transitions, 14273 flow [2023-08-27 15:49:40,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-08-27 15:49:40,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2023-08-27 15:49:40,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 8066 transitions. [2023-08-27 15:49:40,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32941272563914076 [2023-08-27 15:49:40,418 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 8066 transitions. [2023-08-27 15:49:40,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 8066 transitions. [2023-08-27 15:49:40,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:49:40,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 8066 transitions. [2023-08-27 15:49:40,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 104.75324675324676) internal successors, (8066), 77 states have internal predecessors, (8066), 0 states have call successors, (0), 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 15:49:40,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 318.0) internal successors, (24804), 78 states have internal predecessors, (24804), 0 states have call successors, (0), 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 15:49:40,448 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 318.0) internal successors, (24804), 78 states have internal predecessors, (24804), 0 states have call successors, (0), 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 15:49:40,448 INFO L175 Difference]: Start difference. First operand has 273 places, 399 transitions, 4171 flow. Second operand 77 states and 8066 transitions. [2023-08-27 15:49:40,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1212 transitions, 14273 flow [2023-08-27 15:49:41,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 1212 transitions, 13933 flow, removed 137 selfloop flow, removed 15 redundant places. [2023-08-27 15:49:41,644 INFO L231 Difference]: Finished difference. Result has 373 places, 756 transitions, 10141 flow [2023-08-27 15:49:41,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=3971, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=10141, PETRI_PLACES=373, PETRI_TRANSITIONS=756} [2023-08-27 15:49:41,644 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 331 predicate places. [2023-08-27 15:49:41,645 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 756 transitions, 10141 flow [2023-08-27 15:49:41,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 100.33333333333333) internal successors, (3010), 30 states have internal predecessors, (3010), 0 states have call successors, (0), 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 15:49:41,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:49:41,645 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:49:41,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 15:49:41,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 15:49:41,851 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:49:41,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:49:41,852 INFO L85 PathProgramCache]: Analyzing trace with hash -318929575, now seen corresponding path program 2 times [2023-08-27 15:49:41,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:49:41,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139004123] [2023-08-27 15:49:41,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:49:41,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:49:41,863 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 15:49:41,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607656865] [2023-08-27 15:49:41,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 15:49:41,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:49:41,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:49:41,864 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:49:41,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 15:49:42,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 15:49:42,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:49:42,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-27 15:49:42,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:49:42,735 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 15:49:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:49:42,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:49:43,105 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 40 treesize of output 36 [2023-08-27 15:49:43,114 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:49:43,115 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 75 [2023-08-27 15:49:43,149 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:49:43,150 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2023-08-27 15:49:43,182 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:49:43,182 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 166 treesize of output 131 [2023-08-27 15:49:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:49:50,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:49:50,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139004123] [2023-08-27 15:49:50,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 15:49:50,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607656865] [2023-08-27 15:49:50,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607656865] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:49:50,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 15:49:50,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 29 [2023-08-27 15:49:50,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056744457] [2023-08-27 15:49:50,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 15:49:50,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-27 15:49:50,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:49:50,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-27 15:49:50,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=819, Unknown=0, NotChecked=0, Total=930 [2023-08-27 15:49:50,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 318 [2023-08-27 15:49:50,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 756 transitions, 10141 flow. Second operand has 31 states, 31 states have (on average 100.25806451612904) internal successors, (3108), 31 states have internal predecessors, (3108), 0 states have call successors, (0), 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 15:49:50,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:49:50,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 318 [2023-08-27 15:49:50,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:50:39,227 INFO L124 PetriNetUnfolderBase]: 11395/22483 cut-off events. [2023-08-27 15:50:39,227 INFO L125 PetriNetUnfolderBase]: For 981475/981597 co-relation queries the response was YES. [2023-08-27 15:50:39,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161596 conditions, 22483 events. 11395/22483 cut-off events. For 981475/981597 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 166836 event pairs, 2125 based on Foata normal form. 154/22583 useless extension candidates. Maximal degree in co-relation 161467. Up to 8958 conditions per place. [2023-08-27 15:50:39,504 INFO L140 encePairwiseOnDemand]: 302/318 looper letters, 894 selfloop transitions, 563 changer transitions 127/1603 dead transitions. [2023-08-27 15:50:39,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 1603 transitions, 23782 flow [2023-08-27 15:50:39,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-08-27 15:50:39,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2023-08-27 15:50:39,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 8991 transitions. [2023-08-27 15:50:39,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32876261518209743 [2023-08-27 15:50:39,528 INFO L72 ComplementDD]: Start complementDD. Operand 86 states and 8991 transitions. [2023-08-27 15:50:39,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 8991 transitions. [2023-08-27 15:50:39,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:50:39,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 86 states and 8991 transitions. [2023-08-27 15:50:39,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 87 states, 86 states have (on average 104.54651162790698) internal successors, (8991), 86 states have internal predecessors, (8991), 0 states have call successors, (0), 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 15:50:39,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 87 states, 87 states have (on average 318.0) internal successors, (27666), 87 states have internal predecessors, (27666), 0 states have call successors, (0), 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 15:50:39,554 INFO L81 ComplementDD]: Finished complementDD. Result has 87 states, 87 states have (on average 318.0) internal successors, (27666), 87 states have internal predecessors, (27666), 0 states have call successors, (0), 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 15:50:39,554 INFO L175 Difference]: Start difference. First operand has 373 places, 756 transitions, 10141 flow. Second operand 86 states and 8991 transitions. [2023-08-27 15:50:39,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 1603 transitions, 23782 flow [2023-08-27 15:50:43,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 1603 transitions, 23097 flow, removed 297 selfloop flow, removed 21 redundant places. [2023-08-27 15:50:43,863 INFO L231 Difference]: Finished difference. Result has 474 places, 1035 transitions, 15925 flow [2023-08-27 15:50:43,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=9778, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=756, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=15925, PETRI_PLACES=474, PETRI_TRANSITIONS=1035} [2023-08-27 15:50:43,863 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 432 predicate places. [2023-08-27 15:50:43,864 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 1035 transitions, 15925 flow [2023-08-27 15:50:43,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 100.25806451612904) internal successors, (3108), 31 states have internal predecessors, (3108), 0 states have call successors, (0), 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 15:50:43,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:50:43,864 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:50:43,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 15:50:44,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:50:44,070 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-27 15:50:44,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:50:44,071 INFO L85 PathProgramCache]: Analyzing trace with hash 668753503, now seen corresponding path program 3 times [2023-08-27 15:50:44,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:50:44,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946697829] [2023-08-27 15:50:44,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:50:44,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:50:44,084 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 15:50:44,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359183199] [2023-08-27 15:50:44,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 15:50:44,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:50:44,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:50:44,085 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:50:44,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 15:50:45,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 15:50:45,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:50:45,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-27 15:50:45,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:50:45,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 15:50:45,937 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2023-08-27 15:50:45,947 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-27 15:50:45,947 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-08-27 15:50:45,980 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 13 treesize of output 15 [2023-08-27 15:50:46,062 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 18 treesize of output 13 [2023-08-27 15:50:46,376 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 21 treesize of output 16 [2023-08-27 15:50:46,746 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 24 [2023-08-27 15:50:46,936 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 19 [2023-08-27 15:50:46,958 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:50:46,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:51:27,075 WARN L234 SmtUtils]: Spent 23.13s on a formula simplification. DAG size of input: 183 DAG size of output: 153 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:52:28,811 WARN L234 SmtUtils]: Spent 10.23s on a formula simplification that was a NOOP. DAG size: 155 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:52:46,551 WARN L234 SmtUtils]: Spent 10.44s on a formula simplification that was a NOOP. DAG size: 156 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:53:06,244 WARN L234 SmtUtils]: Spent 10.20s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:54:05,684 WARN L234 SmtUtils]: Spent 7.52s on a formula simplification that was a NOOP. DAG size: 159 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-08-27 15:55:44,212 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 15:55:44,212 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 15:55:44,283 WARN L266 SmtUtils]: Removed 3 from assertion stack [2023-08-27 15:55:44,285 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONASSERT (15 of 16 remaining) [2023-08-27 15:55:44,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 15:55:44,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:55:44,486 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 56 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 231 for 61520ms.. [2023-08-27 15:55:44,487 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 16 remaining) [2023-08-27 15:55:44,487 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 16 remaining) [2023-08-27 15:55:44,487 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-27 15:55:44,487 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-27 15:55:44,487 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONASSERT (10 of 16 remaining) [2023-08-27 15:55:44,487 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONASSERT (9 of 16 remaining) [2023-08-27 15:55:44,487 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-08-27 15:55:44,487 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-27 15:55:44,487 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONASSERT (6 of 16 remaining) [2023-08-27 15:55:44,487 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-27 15:55:44,487 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-27 15:55:44,488 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONASSERT (3 of 16 remaining) [2023-08-27 15:55:44,488 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONASSERT (2 of 16 remaining) [2023-08-27 15:55:44,488 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-27 15:55:44,488 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-27 15:55:44,488 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:55:44,491 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 15:55:44,491 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 15:55:44,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 03:55:44 BasicIcfg [2023-08-27 15:55:44,492 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 15:55:44,492 INFO L158 Benchmark]: Toolchain (without parser) took 875876.06ms. Allocated memory was 367.0MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 341.1MB in the beginning and 522.8MB in the end (delta: -181.7MB). Peak memory consumption was 868.6MB. Max. memory is 16.0GB. [2023-08-27 15:55:44,493 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 367.0MB. Free memory was 345.2MB in the beginning and 345.1MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 15:55:44,493 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.59ms. Allocated memory is still 367.0MB. Free memory was 341.1MB in the beginning and 320.8MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-27 15:55:44,493 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.45ms. Allocated memory is still 367.0MB. Free memory was 320.8MB in the beginning and 318.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 15:55:44,493 INFO L158 Benchmark]: Boogie Preprocessor took 33.92ms. Allocated memory is still 367.0MB. Free memory was 318.9MB in the beginning and 316.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 15:55:44,493 INFO L158 Benchmark]: RCFGBuilder took 400.55ms. Allocated memory is still 367.0MB. Free memory was 316.8MB in the beginning and 297.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 15:55:44,493 INFO L158 Benchmark]: TraceAbstraction took 875048.98ms. Allocated memory was 367.0MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 297.1MB in the beginning and 522.8MB in the end (delta: -225.7MB). Peak memory consumption was 824.6MB. Max. memory is 16.0GB. [2023-08-27 15:55:44,494 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 367.0MB. Free memory was 345.2MB in the beginning and 345.1MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 337.59ms. Allocated memory is still 367.0MB. Free memory was 341.1MB in the beginning and 320.8MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.45ms. Allocated memory is still 367.0MB. Free memory was 320.8MB in the beginning and 318.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.92ms. Allocated memory is still 367.0MB. Free memory was 318.9MB in the beginning and 316.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 400.55ms. Allocated memory is still 367.0MB. Free memory was 316.8MB in the beginning and 297.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 875048.98ms. Allocated memory was 367.0MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 297.1MB in the beginning and 522.8MB in the end (delta: -225.7MB). Peak memory consumption was 824.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 208]: Unsoundness Warning unspecified type, defaulting to int C: short [208] - GenericResultAtLocation [Line: 209]: Unsoundness Warning unspecified type, defaulting to int C: short [209] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 150 PlacesBefore, 42 PlacesAfterwards, 157 TransitionsBefore, 42 TransitionsAfterwards, 6602 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 80 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 7 ChoiceCompositions, 150 TotalNumberOfCompositions, 13935 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8882, independent: 8560, independent conditional: 0, independent unconditional: 8560, dependent: 322, dependent conditional: 0, dependent unconditional: 322, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3915, independent: 3859, independent conditional: 0, independent unconditional: 3859, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8882, independent: 4701, independent conditional: 0, independent unconditional: 4701, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 3915, unknown conditional: 0, unknown unconditional: 3915] , Statistics on independence cache: Total cache size (in pairs): 285, Positive cache size: 266, Positive conditional cache size: 0, Positive unconditional cache size: 266, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 681]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 56 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 231 for 61520ms.. - TimeoutResultAtElement [Line: 764]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 56 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 231 for 61520ms.. - TimeoutResultAtElement [Line: 763]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 56 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 231 for 61520ms.. - TimeoutResultAtElement [Line: 725]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 56 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 231 for 61520ms.. - TimeoutResultAtElement [Line: 725]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 56 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 231 for 61520ms.. - TimeoutResultAtElement [Line: 681]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 56 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 231 for 61520ms.. - TimeoutResultAtElement [Line: 681]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 56 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 231 for 61520ms.. - TimeoutResultAtElement [Line: 743]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 56 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 231 for 61520ms.. - TimeoutResultAtElement [Line: 743]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 56 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 231 for 61520ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 246 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 874.9s, OverallIterations: 20, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 494.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 3008 SdHoareTripleChecker+Valid, 149.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3008 mSDsluCounter, 103 SdHoareTripleChecker+Invalid, 148.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 93 mSDsCounter, 233 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12737 IncrementalHoareTripleChecker+Invalid, 12974 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 233 mSolverCounterUnsat, 10 mSDtfsCounter, 12737 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 785 GetRequests, 378 SyntacticMatches, 1 SemanticMatches, 406 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9312 ImplicationChecksByTransitivity, 354.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15925occurred in iteration=19, InterpolantAutomatonStates: 369, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 70.2s InterpolantComputationTime, 403 NumberOfCodeBlocks, 403 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 577 ConstructedInterpolants, 43 QuantifiedInterpolants, 15197 SizeOfPredicates, 94 NumberOfNonLiveVariables, 3508 ConjunctsInSsa, 294 ConjunctsInUnsatCore, 26 InterpolantComputations, 14 PerfectInterpolantSequences, 24/230 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown