/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread/stack_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:55:34,469 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:55:34,553 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 02:55:34,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:55:34,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:55:34,590 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:55:34,591 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:55:34,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:55:34,592 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:55:34,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:55:34,597 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:55:34,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:55:34,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:55:34,599 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:55:34,599 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:55:34,599 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:55:34,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:55:34,600 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:55:34,600 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:55:34,600 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:55:34,600 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:55:34,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:55:34,601 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:55:34,602 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:55:34,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:55:34,602 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:55:34,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:55:34,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:55:34,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:55:34,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:55:34,604 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:55:34,604 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:55:34,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:55:34,605 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:55:34,605 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:55:34,605 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:55:34,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:55:34,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:55:34,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:55:34,943 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:55:34,944 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:55:34,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-2.i [2023-08-27 02:55:36,131 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:55:36,414 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:55:36,414 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i [2023-08-27 02:55:36,434 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dc61f7f1/0c175d912cb942f09cbf35b991fcb921/FLAGa38c06951 [2023-08-27 02:55:36,449 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dc61f7f1/0c175d912cb942f09cbf35b991fcb921 [2023-08-27 02:55:36,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:55:36,453 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:55:36,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:55:36,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:55:36,456 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:55:36,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:55:36" (1/1) ... [2023-08-27 02:55:36,458 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e559fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:36, skipping insertion in model container [2023-08-27 02:55:36,458 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:55:36" (1/1) ... [2023-08-27 02:55:36,512 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:55:36,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:55:36,966 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:55:36,994 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 02:55:36,995 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 02:55:37,001 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [753] [2023-08-27 02:55:37,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:55:37,104 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:55:37,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:37 WrapperNode [2023-08-27 02:55:37,104 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:55:37,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:55:37,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:55:37,106 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:55:37,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:37" (1/1) ... [2023-08-27 02:55:37,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:37" (1/1) ... [2023-08-27 02:55:37,173 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 163 [2023-08-27 02:55:37,174 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:55:37,174 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:55:37,174 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:55:37,175 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:55:37,182 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:37" (1/1) ... [2023-08-27 02:55:37,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:37" (1/1) ... [2023-08-27 02:55:37,200 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:37" (1/1) ... [2023-08-27 02:55:37,201 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:37" (1/1) ... [2023-08-27 02:55:37,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:37" (1/1) ... [2023-08-27 02:55:37,210 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:37" (1/1) ... [2023-08-27 02:55:37,212 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:37" (1/1) ... [2023-08-27 02:55:37,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:37" (1/1) ... [2023-08-27 02:55:37,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:55:37,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:55:37,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:55:37,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:55:37,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:37" (1/1) ... [2023-08-27 02:55:37,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:55:37,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:55:37,250 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 02:55:37,275 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 02:55:37,286 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-27 02:55:37,286 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-27 02:55:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-27 02:55:37,287 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-27 02:55:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:55:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:55:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 02:55:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:55:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 02:55:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:55:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:55:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:55:37,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:55:37,289 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 02:55:37,415 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:55:37,417 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:55:37,641 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:55:37,649 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:55:37,650 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 02:55:37,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:55:37 BoogieIcfgContainer [2023-08-27 02:55:37,652 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:55:37,654 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:55:37,654 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:55:37,660 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:55:37,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:55:36" (1/3) ... [2023-08-27 02:55:37,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a532529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:55:37, skipping insertion in model container [2023-08-27 02:55:37,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:37" (2/3) ... [2023-08-27 02:55:37,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a532529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:55:37, skipping insertion in model container [2023-08-27 02:55:37,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:55:37" (3/3) ... [2023-08-27 02:55:37,664 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2023-08-27 02:55:37,680 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:55:37,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-27 02:55:37,681 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:55:37,795 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 02:55:37,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 175 transitions, 366 flow [2023-08-27 02:55:37,895 INFO L124 PetriNetUnfolderBase]: 12/173 cut-off events. [2023-08-27 02:55:37,895 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:55:37,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 173 events. 12/173 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 472 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 135. Up to 3 conditions per place. [2023-08-27 02:55:37,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 175 transitions, 366 flow [2023-08-27 02:55:37,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 164 transitions, 337 flow [2023-08-27 02:55:37,915 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:55:37,929 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 164 transitions, 337 flow [2023-08-27 02:55:37,932 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 164 transitions, 337 flow [2023-08-27 02:55:37,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 164 transitions, 337 flow [2023-08-27 02:55:37,994 INFO L124 PetriNetUnfolderBase]: 12/164 cut-off events. [2023-08-27 02:55:37,994 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 02:55:37,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 164 events. 12/164 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 408 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 135. Up to 3 conditions per place. [2023-08-27 02:55:38,000 INFO L119 LiptonReduction]: Number of co-enabled transitions 9540 [2023-08-27 02:55:41,957 INFO L134 LiptonReduction]: Checked pairs total: 14007 [2023-08-27 02:55:41,958 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-08-27 02:55:41,981 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:55:41,989 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;@63175a15, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:55:41,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-27 02:55:41,995 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:55:41,995 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-08-27 02:55:41,996 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 02:55:41,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:41,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 02:55:41,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:42,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:42,003 INFO L85 PathProgramCache]: Analyzing trace with hash -91113708, now seen corresponding path program 1 times [2023-08-27 02:55:42,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:42,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266230690] [2023-08-27 02:55:42,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:42,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:42,265 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 02:55:42,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:42,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266230690] [2023-08-27 02:55:42,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266230690] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:42,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:42,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:55:42,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565412691] [2023-08-27 02:55:42,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:42,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:42,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:42,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:42,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:42,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 342 [2023-08-27 02:55:42,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states 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 02:55:42,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:42,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 342 [2023-08-27 02:55:42,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:42,597 INFO L124 PetriNetUnfolderBase]: 1254/2057 cut-off events. [2023-08-27 02:55:42,597 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-27 02:55:42,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4162 conditions, 2057 events. 1254/2057 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9563 event pairs, 509 based on Foata normal form. 0/1322 useless extension candidates. Maximal degree in co-relation 3888. Up to 1368 conditions per place. [2023-08-27 02:55:42,618 INFO L140 encePairwiseOnDemand]: 335/342 looper letters, 62 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-27 02:55:42,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 277 flow [2023-08-27 02:55:42,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:42,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:42,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-08-27 02:55:42,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2023-08-27 02:55:42,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-08-27 02:55:42,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-08-27 02:55:42,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:42,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-08-27 02:55:42,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 02:55:42,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 02:55:42,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 02:55:42,658 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 91 flow. Second operand 3 states and 516 transitions. [2023-08-27 02:55:42,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 277 flow [2023-08-27 02:55:42,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 66 transitions, 269 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 02:55:42,666 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 107 flow [2023-08-27 02:55:42,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-08-27 02:55:42,673 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2023-08-27 02:55:42,673 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 107 flow [2023-08-27 02:55:42,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states 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 02:55:42,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:42,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:42,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:55:42,675 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:42,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:42,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1205944391, now seen corresponding path program 1 times [2023-08-27 02:55:42,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:42,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587714442] [2023-08-27 02:55:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:42,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:42,769 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 02:55:42,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:42,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587714442] [2023-08-27 02:55:42,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587714442] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:42,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:42,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:55:42,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136543396] [2023-08-27 02:55:42,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:42,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:42,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:42,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:42,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:42,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 02:55:42,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states 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 02:55:42,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:42,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 02:55:42,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:43,093 INFO L124 PetriNetUnfolderBase]: 1725/3028 cut-off events. [2023-08-27 02:55:43,094 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2023-08-27 02:55:43,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6284 conditions, 3028 events. 1725/3028 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16562 event pairs, 868 based on Foata normal form. 0/2262 useless extension candidates. Maximal degree in co-relation 5712. Up to 1760 conditions per place. [2023-08-27 02:55:43,110 INFO L140 encePairwiseOnDemand]: 337/342 looper letters, 70 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-27 02:55:43,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 74 transitions, 332 flow [2023-08-27 02:55:43,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:43,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:43,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-08-27 02:55:43,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272904483430799 [2023-08-27 02:55:43,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-08-27 02:55:43,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-08-27 02:55:43,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:43,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-08-27 02:55:43,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states 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 02:55:43,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 02:55:43,118 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 02:55:43,118 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 107 flow. Second operand 3 states and 541 transitions. [2023-08-27 02:55:43,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 74 transitions, 332 flow [2023-08-27 02:55:43,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 74 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:43,123 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 120 flow [2023-08-27 02:55:43,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=42, 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=120, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-08-27 02:55:43,124 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-08-27 02:55:43,125 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 120 flow [2023-08-27 02:55:43,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states 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 02:55:43,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:43,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:43,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 02:55:43,129 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:43,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:43,130 INFO L85 PathProgramCache]: Analyzing trace with hash -34630795, now seen corresponding path program 1 times [2023-08-27 02:55:43,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:43,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135164009] [2023-08-27 02:55:43,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:43,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:43,252 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 02:55:43,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:43,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135164009] [2023-08-27 02:55:43,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135164009] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:43,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:43,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:55:43,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297408685] [2023-08-27 02:55:43,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:43,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:43,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:43,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:43,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:43,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 02:55:43,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 02:55:43,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:43,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 02:55:43,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:43,566 INFO L124 PetriNetUnfolderBase]: 2247/3682 cut-off events. [2023-08-27 02:55:43,566 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2023-08-27 02:55:43,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8469 conditions, 3682 events. 2247/3682 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 21545 event pairs, 979 based on Foata normal form. 0/2720 useless extension candidates. Maximal degree in co-relation 6652. Up to 3011 conditions per place. [2023-08-27 02:55:43,591 INFO L140 encePairwiseOnDemand]: 337/342 looper letters, 68 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-27 02:55:43,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 340 flow [2023-08-27 02:55:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:43,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-08-27 02:55:43,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243664717348928 [2023-08-27 02:55:43,594 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-08-27 02:55:43,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-08-27 02:55:43,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:43,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-08-27 02:55:43,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states 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 02:55:43,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 02:55:43,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 02:55:43,599 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 120 flow. Second operand 3 states and 538 transitions. [2023-08-27 02:55:43,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 340 flow [2023-08-27 02:55:43,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:43,602 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 134 flow [2023-08-27 02:55:43,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-08-27 02:55:43,603 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2023-08-27 02:55:43,603 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 134 flow [2023-08-27 02:55:43,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 02:55:43,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:43,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:43,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 02:55:43,604 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:43,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:43,605 INFO L85 PathProgramCache]: Analyzing trace with hash -34630820, now seen corresponding path program 1 times [2023-08-27 02:55:43,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:43,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122672275] [2023-08-27 02:55:43,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:43,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:43,702 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 02:55:43,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:43,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122672275] [2023-08-27 02:55:43,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122672275] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:43,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:43,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:55:43,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95839293] [2023-08-27 02:55:43,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:43,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:43,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:43,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:43,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:43,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 02:55:43,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 02:55:43,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:43,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 02:55:43,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:44,097 INFO L124 PetriNetUnfolderBase]: 2386/3851 cut-off events. [2023-08-27 02:55:44,097 INFO L125 PetriNetUnfolderBase]: For 589/589 co-relation queries the response was YES. [2023-08-27 02:55:44,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9370 conditions, 3851 events. 2386/3851 cut-off events. For 589/589 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22091 event pairs, 1048 based on Foata normal form. 160/3143 useless extension candidates. Maximal degree in co-relation 8980. Up to 3410 conditions per place. [2023-08-27 02:55:44,120 INFO L140 encePairwiseOnDemand]: 337/342 looper letters, 60 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-08-27 02:55:44,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 338 flow [2023-08-27 02:55:44,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:44,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-08-27 02:55:44,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2023-08-27 02:55:44,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-08-27 02:55:44,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-08-27 02:55:44,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:44,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-08-27 02:55:44,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states 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 02:55:44,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 02:55:44,127 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 02:55:44,127 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 134 flow. Second operand 3 states and 531 transitions. [2023-08-27 02:55:44,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 338 flow [2023-08-27 02:55:44,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:44,130 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 170 flow [2023-08-27 02:55:44,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2023-08-27 02:55:44,132 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2023-08-27 02:55:44,132 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 170 flow [2023-08-27 02:55:44,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 02:55:44,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:44,133 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:44,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 02:55:44,133 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:44,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:44,134 INFO L85 PathProgramCache]: Analyzing trace with hash 28326508, now seen corresponding path program 1 times [2023-08-27 02:55:44,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:44,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846736208] [2023-08-27 02:55:44,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:44,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:44,219 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 02:55:44,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:44,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846736208] [2023-08-27 02:55:44,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846736208] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:55:44,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077777486] [2023-08-27 02:55:44,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:44,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:55:44,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:55:44,229 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 02:55:44,255 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 02:55:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:44,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:55:44,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:55:44,389 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 02:55:44,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:55:44,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077777486] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:44,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:55:44,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 02:55:44,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941307515] [2023-08-27 02:55:44,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:44,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:55:44,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:44,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:55:44,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:55:44,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 02:55:44,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 02:55:44,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:44,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 02:55:44,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:44,770 INFO L124 PetriNetUnfolderBase]: 2074/3553 cut-off events. [2023-08-27 02:55:44,770 INFO L125 PetriNetUnfolderBase]: For 1490/1490 co-relation queries the response was YES. [2023-08-27 02:55:44,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9141 conditions, 3553 events. 2074/3553 cut-off events. For 1490/1490 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 19973 event pairs, 75 based on Foata normal form. 0/2887 useless extension candidates. Maximal degree in co-relation 8738. Up to 1861 conditions per place. [2023-08-27 02:55:44,789 INFO L140 encePairwiseOnDemand]: 339/342 looper letters, 100 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-08-27 02:55:44,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 104 transitions, 600 flow [2023-08-27 02:55:44,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:55:44,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:55:44,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 712 transitions. [2023-08-27 02:55:44,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52046783625731 [2023-08-27 02:55:44,792 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 712 transitions. [2023-08-27 02:55:44,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 712 transitions. [2023-08-27 02:55:44,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:44,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 712 transitions. [2023-08-27 02:55:44,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states 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 02:55:44,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states 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 02:55:44,796 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states 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 02:55:44,796 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 170 flow. Second operand 4 states and 712 transitions. [2023-08-27 02:55:44,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 104 transitions, 600 flow [2023-08-27 02:55:44,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 104 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:44,800 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 164 flow [2023-08-27 02:55:44,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=160, 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=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-08-27 02:55:44,801 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2023-08-27 02:55:44,801 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 164 flow [2023-08-27 02:55:44,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 02:55:44,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:44,802 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:44,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 02:55:45,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:55:45,008 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:45,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:45,008 INFO L85 PathProgramCache]: Analyzing trace with hash 28326621, now seen corresponding path program 1 times [2023-08-27 02:55:45,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:45,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2634334] [2023-08-27 02:55:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:45,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:45,062 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 02:55:45,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:45,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2634334] [2023-08-27 02:55:45,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2634334] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:45,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:45,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:55:45,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731174680] [2023-08-27 02:55:45,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:45,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:45,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:45,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:45,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:45,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 02:55:45,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states 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 02:55:45,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:45,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 02:55:45,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:45,333 INFO L124 PetriNetUnfolderBase]: 2000/3401 cut-off events. [2023-08-27 02:55:45,333 INFO L125 PetriNetUnfolderBase]: For 1381/1381 co-relation queries the response was YES. [2023-08-27 02:55:45,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8555 conditions, 3401 events. 2000/3401 cut-off events. For 1381/1381 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18660 event pairs, 313 based on Foata normal form. 0/2823 useless extension candidates. Maximal degree in co-relation 8170. Up to 2507 conditions per place. [2023-08-27 02:55:45,351 INFO L140 encePairwiseOnDemand]: 338/342 looper letters, 63 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-08-27 02:55:45,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 391 flow [2023-08-27 02:55:45,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:45,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:45,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2023-08-27 02:55:45,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116959064327485 [2023-08-27 02:55:45,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2023-08-27 02:55:45,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2023-08-27 02:55:45,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:45,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2023-08-27 02:55:45,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 02:55:45,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 02:55:45,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 02:55:45,357 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 164 flow. Second operand 3 states and 525 transitions. [2023-08-27 02:55:45,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 391 flow [2023-08-27 02:55:45,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:55:45,360 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 173 flow [2023-08-27 02:55:45,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=47, 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=173, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-08-27 02:55:45,361 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2023-08-27 02:55:45,361 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 173 flow [2023-08-27 02:55:45,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states 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 02:55:45,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:45,361 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:45,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 02:55:45,362 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:45,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:45,362 INFO L85 PathProgramCache]: Analyzing trace with hash -893196287, now seen corresponding path program 1 times [2023-08-27 02:55:45,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:45,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425644205] [2023-08-27 02:55:45,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:45,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:45,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:45,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:45,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425644205] [2023-08-27 02:55:45,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425644205] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:55:45,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739362492] [2023-08-27 02:55:45,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:45,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:55:45,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:55:45,430 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 02:55:45,432 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 02:55:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:45,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:55:45,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:55:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:45,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:55:45,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:45,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739362492] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:55:45,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:55:45,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-27 02:55:45,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160294099] [2023-08-27 02:55:45,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:55:45,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 02:55:45,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:45,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 02:55:45,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-27 02:55:45,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-27 02:55:45,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 173 flow. Second operand has 10 states, 10 states have (on average 146.4) internal successors, (1464), 10 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states 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 02:55:45,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:45,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-27 02:55:45,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:46,394 INFO L124 PetriNetUnfolderBase]: 4546/7433 cut-off events. [2023-08-27 02:55:46,394 INFO L125 PetriNetUnfolderBase]: For 4672/4672 co-relation queries the response was YES. [2023-08-27 02:55:46,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20217 conditions, 7433 events. 4546/7433 cut-off events. For 4672/4672 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 42899 event pairs, 667 based on Foata normal form. 154/6537 useless extension candidates. Maximal degree in co-relation 19594. Up to 2360 conditions per place. [2023-08-27 02:55:46,449 INFO L140 encePairwiseOnDemand]: 330/342 looper letters, 232 selfloop transitions, 40 changer transitions 0/273 dead transitions. [2023-08-27 02:55:46,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 273 transitions, 1577 flow [2023-08-27 02:55:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 02:55:46,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 02:55:46,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2254 transitions. [2023-08-27 02:55:46,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2023-08-27 02:55:46,455 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2254 transitions. [2023-08-27 02:55:46,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2254 transitions. [2023-08-27 02:55:46,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:46,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2254 transitions. [2023-08-27 02:55:46,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 161.0) internal successors, (2254), 14 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states 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 02:55:46,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 342.0) internal successors, (5130), 15 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states 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 02:55:46,467 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 342.0) internal successors, (5130), 15 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states 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 02:55:46,467 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 173 flow. Second operand 14 states and 2254 transitions. [2023-08-27 02:55:46,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 273 transitions, 1577 flow [2023-08-27 02:55:46,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 273 transitions, 1531 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:46,487 INFO L231 Difference]: Finished difference. Result has 71 places, 85 transitions, 496 flow [2023-08-27 02:55:46,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=496, PETRI_PLACES=71, PETRI_TRANSITIONS=85} [2023-08-27 02:55:46,487 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2023-08-27 02:55:46,487 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 85 transitions, 496 flow [2023-08-27 02:55:46,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 146.4) internal successors, (1464), 10 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states 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 02:55:46,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:46,488 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:46,500 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 02:55:46,694 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,SelfDestructingSolverStorable6 [2023-08-27 02:55:46,694 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:46,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:46,695 INFO L85 PathProgramCache]: Analyzing trace with hash 630126791, now seen corresponding path program 1 times [2023-08-27 02:55:46,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:46,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338015277] [2023-08-27 02:55:46,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:46,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:46,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:46,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338015277] [2023-08-27 02:55:46,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338015277] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:55:46,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233049285] [2023-08-27 02:55:46,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:46,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:55:46,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:55:46,799 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 02:55:46,820 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 02:55:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:46,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 02:55:46,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:55:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:46,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:55:46,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233049285] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:46,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:55:46,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-27 02:55:46,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038278712] [2023-08-27 02:55:46,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:46,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:55:46,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:46,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:55:46,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:55:46,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-27 02:55:46,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 85 transitions, 496 flow. Second operand has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states 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 02:55:46,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:46,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-27 02:55:46,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:47,694 INFO L124 PetriNetUnfolderBase]: 5121/8506 cut-off events. [2023-08-27 02:55:47,694 INFO L125 PetriNetUnfolderBase]: For 12491/12491 co-relation queries the response was YES. [2023-08-27 02:55:47,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26672 conditions, 8506 events. 5121/8506 cut-off events. For 12491/12491 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 47604 event pairs, 1166 based on Foata normal form. 598/8220 useless extension candidates. Maximal degree in co-relation 26008. Up to 4022 conditions per place. [2023-08-27 02:55:47,753 INFO L140 encePairwiseOnDemand]: 330/342 looper letters, 152 selfloop transitions, 38 changer transitions 0/191 dead transitions. [2023-08-27 02:55:47,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 191 transitions, 1398 flow [2023-08-27 02:55:47,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:55:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:55:47,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1135 transitions. [2023-08-27 02:55:47,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4741019214703425 [2023-08-27 02:55:47,756 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1135 transitions. [2023-08-27 02:55:47,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1135 transitions. [2023-08-27 02:55:47,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:47,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1135 transitions. [2023-08-27 02:55:47,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.14285714285714) internal successors, (1135), 7 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states 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 02:55:47,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 342.0) internal successors, (2736), 8 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states 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 02:55:47,762 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 342.0) internal successors, (2736), 8 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states 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 02:55:47,762 INFO L175 Difference]: Start difference. First operand has 71 places, 85 transitions, 496 flow. Second operand 7 states and 1135 transitions. [2023-08-27 02:55:47,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 191 transitions, 1398 flow [2023-08-27 02:55:47,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 191 transitions, 1380 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:47,791 INFO L231 Difference]: Finished difference. Result has 79 places, 102 transitions, 825 flow [2023-08-27 02:55:47,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=825, PETRI_PLACES=79, PETRI_TRANSITIONS=102} [2023-08-27 02:55:47,792 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2023-08-27 02:55:47,792 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 102 transitions, 825 flow [2023-08-27 02:55:47,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states 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 02:55:47,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:47,793 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 02:55:47,803 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 02:55:47,998 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 02:55:47,998 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:47,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:47,999 INFO L85 PathProgramCache]: Analyzing trace with hash -38520247, now seen corresponding path program 1 times [2023-08-27 02:55:47,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:47,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756434376] [2023-08-27 02:55:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:47,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:48,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:48,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756434376] [2023-08-27 02:55:48,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756434376] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:48,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:48,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:55:48,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468687007] [2023-08-27 02:55:48,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:48,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:48,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:48,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:48,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:48,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 02:55:48,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 102 transitions, 825 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states 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 02:55:48,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:48,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 02:55:48,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:48,738 INFO L124 PetriNetUnfolderBase]: 4552/7689 cut-off events. [2023-08-27 02:55:48,739 INFO L125 PetriNetUnfolderBase]: For 17785/17785 co-relation queries the response was YES. [2023-08-27 02:55:48,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26239 conditions, 7689 events. 4552/7689 cut-off events. For 17785/17785 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 44097 event pairs, 1795 based on Foata normal form. 0/7135 useless extension candidates. Maximal degree in co-relation 25716. Up to 7471 conditions per place. [2023-08-27 02:55:48,798 INFO L140 encePairwiseOnDemand]: 340/342 looper letters, 100 selfloop transitions, 1 changer transitions 0/109 dead transitions. [2023-08-27 02:55:48,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 109 transitions, 1054 flow [2023-08-27 02:55:48,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:48,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:48,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-08-27 02:55:48,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49902534113060426 [2023-08-27 02:55:48,800 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-08-27 02:55:48,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-08-27 02:55:48,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:48,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-08-27 02:55:48,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states 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 02:55:48,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 02:55:48,804 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 02:55:48,804 INFO L175 Difference]: Start difference. First operand has 79 places, 102 transitions, 825 flow. Second operand 3 states and 512 transitions. [2023-08-27 02:55:48,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 109 transitions, 1054 flow [2023-08-27 02:55:48,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 109 transitions, 1038 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-27 02:55:48,846 INFO L231 Difference]: Finished difference. Result has 78 places, 100 transitions, 799 flow [2023-08-27 02:55:48,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=799, PETRI_PLACES=78, PETRI_TRANSITIONS=100} [2023-08-27 02:55:48,847 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2023-08-27 02:55:48,847 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 100 transitions, 799 flow [2023-08-27 02:55:48,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states 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 02:55:48,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:48,848 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 02:55:48,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 02:55:48,848 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:48,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:48,848 INFO L85 PathProgramCache]: Analyzing trace with hash -38520246, now seen corresponding path program 1 times [2023-08-27 02:55:48,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:48,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743242380] [2023-08-27 02:55:48,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:48,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:48,892 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:55:48,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:48,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743242380] [2023-08-27 02:55:48,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743242380] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:48,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:48,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:55:48,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637883656] [2023-08-27 02:55:48,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:48,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:48,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:48,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:48,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:48,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 02:55:48,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 100 transitions, 799 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states 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 02:55:48,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:48,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 02:55:48,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:49,483 INFO L124 PetriNetUnfolderBase]: 4112/6983 cut-off events. [2023-08-27 02:55:49,483 INFO L125 PetriNetUnfolderBase]: For 16069/16083 co-relation queries the response was YES. [2023-08-27 02:55:49,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23603 conditions, 6983 events. 4112/6983 cut-off events. For 16069/16083 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 39569 event pairs, 1293 based on Foata normal form. 0/6753 useless extension candidates. Maximal degree in co-relation 17262. Up to 5055 conditions per place. [2023-08-27 02:55:49,531 INFO L140 encePairwiseOnDemand]: 338/342 looper letters, 114 selfloop transitions, 5 changer transitions 0/127 dead transitions. [2023-08-27 02:55:49,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 127 transitions, 1210 flow [2023-08-27 02:55:49,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:49,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:49,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2023-08-27 02:55:49,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5097465886939572 [2023-08-27 02:55:49,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2023-08-27 02:55:49,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2023-08-27 02:55:49,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:49,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2023-08-27 02:55:49,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 02:55:49,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 02:55:49,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 02:55:49,537 INFO L175 Difference]: Start difference. First operand has 78 places, 100 transitions, 799 flow. Second operand 3 states and 523 transitions. [2023-08-27 02:55:49,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 127 transitions, 1210 flow [2023-08-27 02:55:49,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 127 transitions, 1201 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:49,574 INFO L231 Difference]: Finished difference. Result has 79 places, 99 transitions, 801 flow [2023-08-27 02:55:49,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=801, PETRI_PLACES=79, PETRI_TRANSITIONS=99} [2023-08-27 02:55:49,575 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2023-08-27 02:55:49,575 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 99 transitions, 801 flow [2023-08-27 02:55:49,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states 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 02:55:49,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:49,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:49,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 02:55:49,576 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:49,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:49,576 INFO L85 PathProgramCache]: Analyzing trace with hash -333694767, now seen corresponding path program 1 times [2023-08-27 02:55:49,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:49,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751516333] [2023-08-27 02:55:49,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:49,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:49,647 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 02:55:49,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:49,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751516333] [2023-08-27 02:55:49,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751516333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:49,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:49,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:55:49,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676807968] [2023-08-27 02:55:49,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:49,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:49,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:49,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:49,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:49,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 342 [2023-08-27 02:55:49,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 99 transitions, 801 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states 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 02:55:49,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:49,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 342 [2023-08-27 02:55:49,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:49,855 INFO L124 PetriNetUnfolderBase]: 1208/2207 cut-off events. [2023-08-27 02:55:49,855 INFO L125 PetriNetUnfolderBase]: For 4162/4162 co-relation queries the response was YES. [2023-08-27 02:55:49,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7595 conditions, 2207 events. 1208/2207 cut-off events. For 4162/4162 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 10648 event pairs, 203 based on Foata normal form. 232/2421 useless extension candidates. Maximal degree in co-relation 7156. Up to 1695 conditions per place. [2023-08-27 02:55:49,865 INFO L140 encePairwiseOnDemand]: 337/342 looper letters, 63 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2023-08-27 02:55:49,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 76 transitions, 663 flow [2023-08-27 02:55:49,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:49,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:49,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-27 02:55:49,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48635477582846004 [2023-08-27 02:55:49,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-27 02:55:49,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-27 02:55:49,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:49,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-27 02:55:49,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states 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 02:55:49,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 02:55:49,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 02:55:49,871 INFO L175 Difference]: Start difference. First operand has 79 places, 99 transitions, 801 flow. Second operand 3 states and 499 transitions. [2023-08-27 02:55:49,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 76 transitions, 663 flow [2023-08-27 02:55:49,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 76 transitions, 609 flow, removed 15 selfloop flow, removed 8 redundant places. [2023-08-27 02:55:49,885 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 436 flow [2023-08-27 02:55:49,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=436, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-08-27 02:55:49,886 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2023-08-27 02:55:49,886 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 436 flow [2023-08-27 02:55:49,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states 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 02:55:49,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:49,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:49,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 02:55:49,886 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:49,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:49,887 INFO L85 PathProgramCache]: Analyzing trace with hash -434025252, now seen corresponding path program 1 times [2023-08-27 02:55:49,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:49,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376582694] [2023-08-27 02:55:49,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:49,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:50,506 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 02:55:50,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:50,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376582694] [2023-08-27 02:55:50,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376582694] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:50,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:50,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-27 02:55:50,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110901342] [2023-08-27 02:55:50,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:50,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 02:55:50,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:50,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 02:55:50,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-27 02:55:50,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 342 [2023-08-27 02:55:50,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 436 flow. Second operand has 11 states, 11 states have (on average 128.9090909090909) internal successors, (1418), 11 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states 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 02:55:50,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:50,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 342 [2023-08-27 02:55:50,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:51,139 INFO L124 PetriNetUnfolderBase]: 1567/2884 cut-off events. [2023-08-27 02:55:51,139 INFO L125 PetriNetUnfolderBase]: For 3992/3992 co-relation queries the response was YES. [2023-08-27 02:55:51,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9549 conditions, 2884 events. 1567/2884 cut-off events. For 3992/3992 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 14927 event pairs, 476 based on Foata normal form. 12/2890 useless extension candidates. Maximal degree in co-relation 7066. Up to 1840 conditions per place. [2023-08-27 02:55:51,158 INFO L140 encePairwiseOnDemand]: 332/342 looper letters, 130 selfloop transitions, 11 changer transitions 0/146 dead transitions. [2023-08-27 02:55:51,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 146 transitions, 1089 flow [2023-08-27 02:55:51,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:55:51,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:55:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1249 transitions. [2023-08-27 02:55:51,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40578297595841456 [2023-08-27 02:55:51,163 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1249 transitions. [2023-08-27 02:55:51,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1249 transitions. [2023-08-27 02:55:51,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:51,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1249 transitions. [2023-08-27 02:55:51,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 138.77777777777777) internal successors, (1249), 9 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states 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 02:55:51,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states 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 02:55:51,171 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states 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 02:55:51,172 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 436 flow. Second operand 9 states and 1249 transitions. [2023-08-27 02:55:51,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 146 transitions, 1089 flow [2023-08-27 02:55:51,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 146 transitions, 1070 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:51,180 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 504 flow [2023-08-27 02:55:51,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=504, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-08-27 02:55:51,181 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2023-08-27 02:55:51,181 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 504 flow [2023-08-27 02:55:51,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 128.9090909090909) internal successors, (1418), 11 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states 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 02:55:51,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:51,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:51,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 02:55:51,182 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:51,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:51,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1363493086, now seen corresponding path program 2 times [2023-08-27 02:55:51,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:51,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504104470] [2023-08-27 02:55:51,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:51,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:51,791 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 02:55:51,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:51,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504104470] [2023-08-27 02:55:51,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504104470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:51,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:51,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-27 02:55:51,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89836588] [2023-08-27 02:55:51,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:51,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 02:55:51,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:51,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 02:55:51,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-27 02:55:51,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 342 [2023-08-27 02:55:51,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 504 flow. Second operand has 11 states, 11 states have (on average 128.9090909090909) internal successors, (1418), 11 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states 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 02:55:51,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:51,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 342 [2023-08-27 02:55:51,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:52,559 INFO L124 PetriNetUnfolderBase]: 1850/3399 cut-off events. [2023-08-27 02:55:52,560 INFO L125 PetriNetUnfolderBase]: For 4833/4833 co-relation queries the response was YES. [2023-08-27 02:55:52,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11525 conditions, 3399 events. 1850/3399 cut-off events. For 4833/4833 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 18172 event pairs, 486 based on Foata normal form. 0/3381 useless extension candidates. Maximal degree in co-relation 8991. Up to 1719 conditions per place. [2023-08-27 02:55:52,577 INFO L140 encePairwiseOnDemand]: 333/342 looper letters, 128 selfloop transitions, 16 changer transitions 0/149 dead transitions. [2023-08-27 02:55:52,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 149 transitions, 1150 flow [2023-08-27 02:55:52,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:55:52,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:55:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1249 transitions. [2023-08-27 02:55:52,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40578297595841456 [2023-08-27 02:55:52,581 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1249 transitions. [2023-08-27 02:55:52,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1249 transitions. [2023-08-27 02:55:52,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:52,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1249 transitions. [2023-08-27 02:55:52,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 138.77777777777777) internal successors, (1249), 9 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states 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 02:55:52,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states 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 02:55:52,589 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states 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 02:55:52,589 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 504 flow. Second operand 9 states and 1249 transitions. [2023-08-27 02:55:52,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 149 transitions, 1150 flow [2023-08-27 02:55:52,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 149 transitions, 1146 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-27 02:55:52,601 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 596 flow [2023-08-27 02:55:52,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=596, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2023-08-27 02:55:52,601 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2023-08-27 02:55:52,602 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 596 flow [2023-08-27 02:55:52,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 128.9090909090909) internal successors, (1418), 11 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states 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 02:55:52,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:52,602 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:52,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 02:55:52,603 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:52,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:52,603 INFO L85 PathProgramCache]: Analyzing trace with hash 829151540, now seen corresponding path program 1 times [2023-08-27 02:55:52,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:52,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040354799] [2023-08-27 02:55:52,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:52,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:52,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:52,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040354799] [2023-08-27 02:55:52,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040354799] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:55:52,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793045761] [2023-08-27 02:55:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:52,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:55:52,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:55:52,690 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 02:55:52,718 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 02:55:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:52,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 02:55:52,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:55:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:55:52,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:55:52,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793045761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:52,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:55:52,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-08-27 02:55:52,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645437675] [2023-08-27 02:55:52,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:52,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:55:52,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:52,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:55:52,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-27 02:55:52,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 342 [2023-08-27 02:55:52,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 596 flow. Second operand has 6 states, 6 states have (on average 140.83333333333334) internal successors, (845), 6 states have internal predecessors, (845), 0 states have call successors, (0), 0 states 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 02:55:52,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:52,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 342 [2023-08-27 02:55:52,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:53,287 INFO L124 PetriNetUnfolderBase]: 1806/3315 cut-off events. [2023-08-27 02:55:53,287 INFO L125 PetriNetUnfolderBase]: For 5564/5564 co-relation queries the response was YES. [2023-08-27 02:55:53,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11649 conditions, 3315 events. 1806/3315 cut-off events. For 5564/5564 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 17114 event pairs, 527 based on Foata normal form. 68/3359 useless extension candidates. Maximal degree in co-relation 9964. Up to 1313 conditions per place. [2023-08-27 02:55:53,308 INFO L140 encePairwiseOnDemand]: 331/342 looper letters, 117 selfloop transitions, 23 changer transitions 0/141 dead transitions. [2023-08-27 02:55:53,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 141 transitions, 1186 flow [2023-08-27 02:55:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:55:53,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:55:53,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 917 transitions. [2023-08-27 02:55:53,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468810916179337 [2023-08-27 02:55:53,311 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 917 transitions. [2023-08-27 02:55:53,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 917 transitions. [2023-08-27 02:55:53,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:53,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 917 transitions. [2023-08-27 02:55:53,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 152.83333333333334) internal successors, (917), 6 states have internal predecessors, (917), 0 states have call successors, (0), 0 states 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 02:55:53,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 342.0) internal successors, (2394), 7 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states 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 02:55:53,316 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 342.0) internal successors, (2394), 7 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states 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 02:55:53,316 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 596 flow. Second operand 6 states and 917 transitions. [2023-08-27 02:55:53,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 141 transitions, 1186 flow [2023-08-27 02:55:53,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 141 transitions, 1154 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-08-27 02:55:53,332 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 740 flow [2023-08-27 02:55:53,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=740, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2023-08-27 02:55:53,332 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2023-08-27 02:55:53,332 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 740 flow [2023-08-27 02:55:53,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.83333333333334) internal successors, (845), 6 states have internal predecessors, (845), 0 states have call successors, (0), 0 states 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 02:55:53,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:53,333 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:53,341 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 02:55:53,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:55:53,539 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:53,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:53,539 INFO L85 PathProgramCache]: Analyzing trace with hash 87113741, now seen corresponding path program 1 times [2023-08-27 02:55:53,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:53,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301923355] [2023-08-27 02:55:53,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:53,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:53,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:53,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301923355] [2023-08-27 02:55:53,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301923355] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:53,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:53,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:55:53,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791483167] [2023-08-27 02:55:53,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:53,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:55:53,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:53,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:55:53,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:55:53,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-27 02:55:53,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 740 flow. Second operand has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states 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 02:55:53,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:53,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-27 02:55:53,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:54,122 INFO L124 PetriNetUnfolderBase]: 2145/3906 cut-off events. [2023-08-27 02:55:54,122 INFO L125 PetriNetUnfolderBase]: For 7190/7190 co-relation queries the response was YES. [2023-08-27 02:55:54,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14157 conditions, 3906 events. 2145/3906 cut-off events. For 7190/7190 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 20950 event pairs, 495 based on Foata normal form. 16/3898 useless extension candidates. Maximal degree in co-relation 12374. Up to 1765 conditions per place. [2023-08-27 02:55:54,143 INFO L140 encePairwiseOnDemand]: 333/342 looper letters, 114 selfloop transitions, 24 changer transitions 0/139 dead transitions. [2023-08-27 02:55:54,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 139 transitions, 1311 flow [2023-08-27 02:55:54,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:55:54,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:55:54,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 794 transitions. [2023-08-27 02:55:54,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.464327485380117 [2023-08-27 02:55:54,146 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 794 transitions. [2023-08-27 02:55:54,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 794 transitions. [2023-08-27 02:55:54,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:54,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 794 transitions. [2023-08-27 02:55:54,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.8) internal successors, (794), 5 states have internal predecessors, (794), 0 states have call successors, (0), 0 states 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 02:55:54,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 342.0) internal successors, (2052), 6 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states 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 02:55:54,151 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 342.0) internal successors, (2052), 6 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states 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 02:55:54,151 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 740 flow. Second operand 5 states and 794 transitions. [2023-08-27 02:55:54,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 139 transitions, 1311 flow [2023-08-27 02:55:54,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 139 transitions, 1307 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-27 02:55:54,168 INFO L231 Difference]: Finished difference. Result has 103 places, 97 transitions, 944 flow [2023-08-27 02:55:54,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=944, PETRI_PLACES=103, PETRI_TRANSITIONS=97} [2023-08-27 02:55:54,169 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2023-08-27 02:55:54,169 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 97 transitions, 944 flow [2023-08-27 02:55:54,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states 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 02:55:54,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:54,169 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 02:55:54,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 02:55:54,170 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:54,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:54,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2073686424, now seen corresponding path program 1 times [2023-08-27 02:55:54,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:54,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293104671] [2023-08-27 02:55:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:54,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:54,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:54,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293104671] [2023-08-27 02:55:54,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293104671] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:55:54,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788242953] [2023-08-27 02:55:54,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:54,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:55:54,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:55:54,308 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 02:55:54,329 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 02:55:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:54,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 02:55:54,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:55:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:54,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:55:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:54,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788242953] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:55:54,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:55:54,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-08-27 02:55:54,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261979249] [2023-08-27 02:55:54,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:55:54,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 02:55:54,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:54,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 02:55:54,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-27 02:55:54,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-27 02:55:54,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 97 transitions, 944 flow. Second operand has 18 states, 18 states have (on average 146.44444444444446) internal successors, (2636), 18 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states 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 02:55:54,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:54,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-27 02:55:54,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:55,628 INFO L124 PetriNetUnfolderBase]: 3265/5954 cut-off events. [2023-08-27 02:55:55,628 INFO L125 PetriNetUnfolderBase]: For 18623/18623 co-relation queries the response was YES. [2023-08-27 02:55:55,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22330 conditions, 5954 events. 3265/5954 cut-off events. For 18623/18623 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 31025 event pairs, 745 based on Foata normal form. 208/6144 useless extension candidates. Maximal degree in co-relation 20277. Up to 2051 conditions per place. [2023-08-27 02:55:55,667 INFO L140 encePairwiseOnDemand]: 333/342 looper letters, 265 selfloop transitions, 52 changer transitions 3/321 dead transitions. [2023-08-27 02:55:55,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 321 transitions, 2924 flow [2023-08-27 02:55:55,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 02:55:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 02:55:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2683 transitions. [2023-08-27 02:55:55,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46147230822153423 [2023-08-27 02:55:55,674 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2683 transitions. [2023-08-27 02:55:55,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2683 transitions. [2023-08-27 02:55:55,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:55,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2683 transitions. [2023-08-27 02:55:55,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 157.8235294117647) internal successors, (2683), 17 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states 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 02:55:55,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 342.0) internal successors, (6156), 18 states have internal predecessors, (6156), 0 states have call successors, (0), 0 states 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 02:55:55,689 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 342.0) internal successors, (6156), 18 states have internal predecessors, (6156), 0 states have call successors, (0), 0 states 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 02:55:55,690 INFO L175 Difference]: Start difference. First operand has 103 places, 97 transitions, 944 flow. Second operand 17 states and 2683 transitions. [2023-08-27 02:55:55,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 321 transitions, 2924 flow [2023-08-27 02:55:55,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 321 transitions, 2903 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:55,722 INFO L231 Difference]: Finished difference. Result has 122 places, 125 transitions, 1423 flow [2023-08-27 02:55:55,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1423, PETRI_PLACES=122, PETRI_TRANSITIONS=125} [2023-08-27 02:55:55,723 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 79 predicate places. [2023-08-27 02:55:55,723 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 125 transitions, 1423 flow [2023-08-27 02:55:55,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 146.44444444444446) internal successors, (2636), 18 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states 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 02:55:55,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:55,724 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:55,730 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 02:55:55,930 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,SelfDestructingSolverStorable15 [2023-08-27 02:55:55,930 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:55,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:55,930 INFO L85 PathProgramCache]: Analyzing trace with hash -928121280, now seen corresponding path program 3 times [2023-08-27 02:55:55,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:55,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111863164] [2023-08-27 02:55:55,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:55,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:57,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:57,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111863164] [2023-08-27 02:55:57,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111863164] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:55:57,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592103080] [2023-08-27 02:55:57,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:55:57,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:55:57,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:55:57,385 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 02:55:57,417 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 02:55:57,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-27 02:55:57,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:55:57,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 53 conjunts are in the unsatisfiable core [2023-08-27 02:55:57,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:55:57,772 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 15 treesize of output 11 [2023-08-27 02:55:58,158 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 80 treesize of output 32 [2023-08-27 02:55:58,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:55:58,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:55:58,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592103080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:58,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:55:58,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 32 [2023-08-27 02:55:58,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862375704] [2023-08-27 02:55:58,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:58,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 02:55:58,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:58,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 02:55:58,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1007, Unknown=0, NotChecked=0, Total=1122 [2023-08-27 02:55:58,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 342 [2023-08-27 02:55:58,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 125 transitions, 1423 flow. Second operand has 15 states, 15 states have (on average 104.86666666666666) internal successors, (1573), 15 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states 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 02:55:58,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:58,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 342 [2023-08-27 02:55:58,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:00,972 INFO L124 PetriNetUnfolderBase]: 4383/8031 cut-off events. [2023-08-27 02:56:00,972 INFO L125 PetriNetUnfolderBase]: For 24772/24772 co-relation queries the response was YES. [2023-08-27 02:56:01,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31656 conditions, 8031 events. 4383/8031 cut-off events. For 24772/24772 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 46102 event pairs, 893 based on Foata normal form. 0/8019 useless extension candidates. Maximal degree in co-relation 31420. Up to 2212 conditions per place. [2023-08-27 02:56:01,045 INFO L140 encePairwiseOnDemand]: 321/342 looper letters, 193 selfloop transitions, 151 changer transitions 0/345 dead transitions. [2023-08-27 02:56:01,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 345 transitions, 3738 flow [2023-08-27 02:56:01,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-27 02:56:01,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-27 02:56:01,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2959 transitions. [2023-08-27 02:56:01,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32044617717132334 [2023-08-27 02:56:01,053 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2959 transitions. [2023-08-27 02:56:01,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2959 transitions. [2023-08-27 02:56:01,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:01,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2959 transitions. [2023-08-27 02:56:01,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 109.5925925925926) internal successors, (2959), 27 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:01,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 342.0) internal successors, (9576), 28 states have internal predecessors, (9576), 0 states have call successors, (0), 0 states 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 02:56:01,072 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 342.0) internal successors, (9576), 28 states have internal predecessors, (9576), 0 states have call successors, (0), 0 states 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 02:56:01,073 INFO L175 Difference]: Start difference. First operand has 122 places, 125 transitions, 1423 flow. Second operand 27 states and 2959 transitions. [2023-08-27 02:56:01,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 345 transitions, 3738 flow [2023-08-27 02:56:01,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 345 transitions, 3509 flow, removed 77 selfloop flow, removed 7 redundant places. [2023-08-27 02:56:01,167 INFO L231 Difference]: Finished difference. Result has 147 places, 219 transitions, 2660 flow [2023-08-27 02:56:01,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2660, PETRI_PLACES=147, PETRI_TRANSITIONS=219} [2023-08-27 02:56:01,168 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 104 predicate places. [2023-08-27 02:56:01,168 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 219 transitions, 2660 flow [2023-08-27 02:56:01,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.86666666666666) internal successors, (1573), 15 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states 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 02:56:01,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:01,169 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:01,182 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 02:56:01,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 02:56:01,382 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:56:01,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:01,383 INFO L85 PathProgramCache]: Analyzing trace with hash -363086378, now seen corresponding path program 4 times [2023-08-27 02:56:01,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:01,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292826831] [2023-08-27 02:56:01,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:01,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:03,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:03,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292826831] [2023-08-27 02:56:03,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292826831] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:56:03,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584827732] [2023-08-27 02:56:03,304 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 02:56:03,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:56:03,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:56:03,305 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 02:56:03,307 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 02:56:03,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 02:56:03,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:56:03,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 68 conjunts are in the unsatisfiable core [2023-08-27 02:56:03,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:56:03,462 INFO L322 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-08-27 02:56:03,463 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 29 treesize of output 34 [2023-08-27 02:56:03,854 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 02:56:03,912 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 21 treesize of output 21 [2023-08-27 02:56:04,379 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 56 treesize of output 32 [2023-08-27 02:56:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:04,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:56:05,054 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_594 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_594) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2023-08-27 02:56:05,078 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:56:05,078 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 02:56:05,090 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:56:05,090 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 49 treesize of output 52 [2023-08-27 02:56:05,106 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-08-27 02:56:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:56:05,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584827732] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:56:05,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:56:05,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 14] total 49 [2023-08-27 02:56:05,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476656477] [2023-08-27 02:56:05,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:56:05,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-08-27 02:56:05,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:05,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-08-27 02:56:05,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2244, Unknown=1, NotChecked=96, Total=2550 [2023-08-27 02:56:05,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-27 02:56:05,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 219 transitions, 2660 flow. Second operand has 51 states, 51 states have (on average 100.6470588235294) internal successors, (5133), 51 states have internal predecessors, (5133), 0 states have call successors, (0), 0 states 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 02:56:05,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:05,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-27 02:56:05,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:30,551 INFO L124 PetriNetUnfolderBase]: 5896/10747 cut-off events. [2023-08-27 02:56:30,552 INFO L125 PetriNetUnfolderBase]: For 46143/46143 co-relation queries the response was YES. [2023-08-27 02:56:30,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47237 conditions, 10747 events. 5896/10747 cut-off events. For 46143/46143 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 65386 event pairs, 476 based on Foata normal form. 114/10855 useless extension candidates. Maximal degree in co-relation 36845. Up to 2326 conditions per place. [2023-08-27 02:56:30,620 INFO L140 encePairwiseOnDemand]: 316/342 looper letters, 486 selfloop transitions, 409 changer transitions 33/929 dead transitions. [2023-08-27 02:56:30,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 929 transitions, 9040 flow [2023-08-27 02:56:30,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-08-27 02:56:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2023-08-27 02:56:30,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 10739 transitions. [2023-08-27 02:56:30,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.307848870542369 [2023-08-27 02:56:30,634 INFO L72 ComplementDD]: Start complementDD. Operand 102 states and 10739 transitions. [2023-08-27 02:56:30,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 102 states and 10739 transitions. [2023-08-27 02:56:30,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:30,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 102 states and 10739 transitions. [2023-08-27 02:56:30,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 103 states, 102 states have (on average 105.2843137254902) internal successors, (10739), 102 states have internal predecessors, (10739), 0 states have call successors, (0), 0 states 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 02:56:30,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 103 states, 103 states have (on average 342.0) internal successors, (35226), 103 states have internal predecessors, (35226), 0 states have call successors, (0), 0 states 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 02:56:30,695 INFO L81 ComplementDD]: Finished complementDD. Result has 103 states, 103 states have (on average 342.0) internal successors, (35226), 103 states have internal predecessors, (35226), 0 states have call successors, (0), 0 states 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 02:56:30,695 INFO L175 Difference]: Start difference. First operand has 147 places, 219 transitions, 2660 flow. Second operand 102 states and 10739 transitions. [2023-08-27 02:56:30,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 929 transitions, 9040 flow [2023-08-27 02:56:30,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 929 transitions, 8833 flow, removed 54 selfloop flow, removed 5 redundant places. [2023-08-27 02:56:30,902 INFO L231 Difference]: Finished difference. Result has 261 places, 461 transitions, 6059 flow [2023-08-27 02:56:30,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=102, PETRI_FLOW=6059, PETRI_PLACES=261, PETRI_TRANSITIONS=461} [2023-08-27 02:56:30,902 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 218 predicate places. [2023-08-27 02:56:30,902 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 461 transitions, 6059 flow [2023-08-27 02:56:30,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 100.6470588235294) internal successors, (5133), 51 states have internal predecessors, (5133), 0 states have call successors, (0), 0 states 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 02:56:30,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:30,905 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:30,910 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 02:56:31,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:56:31,111 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:56:31,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:31,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1311324839, now seen corresponding path program 2 times [2023-08-27 02:56:31,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:31,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757057191] [2023-08-27 02:56:31,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:31,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:31,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:31,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757057191] [2023-08-27 02:56:31,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757057191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:31,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:31,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 02:56:31,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785142069] [2023-08-27 02:56:31,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:31,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:56:31,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:31,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:56:31,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:56:31,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 342 [2023-08-27 02:56:31,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 461 transitions, 6059 flow. Second operand has 7 states, 7 states have (on average 136.71428571428572) internal successors, (957), 7 states have internal predecessors, (957), 0 states have call successors, (0), 0 states 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 02:56:31,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:31,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 342 [2023-08-27 02:56:31,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:33,137 INFO L124 PetriNetUnfolderBase]: 5568/10268 cut-off events. [2023-08-27 02:56:33,138 INFO L125 PetriNetUnfolderBase]: For 164465/164465 co-relation queries the response was YES. [2023-08-27 02:56:33,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76291 conditions, 10268 events. 5568/10268 cut-off events. For 164465/164465 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 62689 event pairs, 1329 based on Foata normal form. 162/10430 useless extension candidates. Maximal degree in co-relation 75910. Up to 6153 conditions per place. [2023-08-27 02:56:33,223 INFO L140 encePairwiseOnDemand]: 329/342 looper letters, 252 selfloop transitions, 220 changer transitions 0/473 dead transitions. [2023-08-27 02:56:33,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 473 transitions, 6967 flow [2023-08-27 02:56:33,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:56:33,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:56:33,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1130 transitions. [2023-08-27 02:56:33,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130116959064328 [2023-08-27 02:56:33,225 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1130 transitions. [2023-08-27 02:56:33,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1130 transitions. [2023-08-27 02:56:33,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:33,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1130 transitions. [2023-08-27 02:56:33,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 141.25) internal successors, (1130), 8 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states 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 02:56:33,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 342.0) internal successors, (3078), 9 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states 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 02:56:33,228 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 342.0) internal successors, (3078), 9 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states 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 02:56:33,229 INFO L175 Difference]: Start difference. First operand has 261 places, 461 transitions, 6059 flow. Second operand 8 states and 1130 transitions. [2023-08-27 02:56:33,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 473 transitions, 6967 flow [2023-08-27 02:56:33,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 473 transitions, 6156 flow, removed 278 selfloop flow, removed 16 redundant places. [2023-08-27 02:56:33,490 INFO L231 Difference]: Finished difference. Result has 252 places, 426 transitions, 5313 flow [2023-08-27 02:56:33,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=4716, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5313, PETRI_PLACES=252, PETRI_TRANSITIONS=426} [2023-08-27 02:56:33,491 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 209 predicate places. [2023-08-27 02:56:33,491 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 426 transitions, 5313 flow [2023-08-27 02:56:33,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.71428571428572) internal successors, (957), 7 states have internal predecessors, (957), 0 states have call successors, (0), 0 states 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 02:56:33,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:33,491 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:33,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 02:56:33,491 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:56:33,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:33,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1569842218, now seen corresponding path program 1 times [2023-08-27 02:56:33,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:33,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352567022] [2023-08-27 02:56:33,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:33,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:34,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:34,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352567022] [2023-08-27 02:56:34,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352567022] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:56:34,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453109743] [2023-08-27 02:56:34,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:34,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:56:34,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:56:34,618 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 02:56:34,620 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 02:56:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:34,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 71 conjunts are in the unsatisfiable core [2023-08-27 02:56:34,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:56:34,945 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 15 treesize of output 11 [2023-08-27 02:56:35,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:56:35,206 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 40 treesize of output 30 [2023-08-27 02:56:35,570 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 80 treesize of output 32 [2023-08-27 02:56:35,618 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:35,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:56:36,605 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 54 treesize of output 46 [2023-08-27 02:56:36,770 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:36,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453109743] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:56:36,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:56:36,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 60 [2023-08-27 02:56:36,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699460239] [2023-08-27 02:56:36,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:56:36,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-08-27 02:56:36,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:36,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-08-27 02:56:36,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=3450, Unknown=0, NotChecked=0, Total=3660 [2023-08-27 02:56:36,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 342 [2023-08-27 02:56:36,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 426 transitions, 5313 flow. Second operand has 61 states, 61 states have (on average 104.81967213114754) internal successors, (6394), 61 states have internal predecessors, (6394), 0 states have call successors, (0), 0 states 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 02:56:36,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:36,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 342 [2023-08-27 02:56:36,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:53,222 INFO L124 PetriNetUnfolderBase]: 8525/15690 cut-off events. [2023-08-27 02:56:53,222 INFO L125 PetriNetUnfolderBase]: For 236078/236078 co-relation queries the response was YES. [2023-08-27 02:56:53,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115476 conditions, 15690 events. 8525/15690 cut-off events. For 236078/236078 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 105082 event pairs, 1152 based on Foata normal form. 70/15760 useless extension candidates. Maximal degree in co-relation 115099. Up to 6422 conditions per place. [2023-08-27 02:56:53,360 INFO L140 encePairwiseOnDemand]: 321/342 looper letters, 620 selfloop transitions, 574 changer transitions 70/1265 dead transitions. [2023-08-27 02:56:53,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 1265 transitions, 18911 flow [2023-08-27 02:56:53,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-08-27 02:56:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2023-08-27 02:56:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 13461 transitions. [2023-08-27 02:56:53,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31741652518392754 [2023-08-27 02:56:53,375 INFO L72 ComplementDD]: Start complementDD. Operand 124 states and 13461 transitions. [2023-08-27 02:56:53,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 124 states and 13461 transitions. [2023-08-27 02:56:53,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:53,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 124 states and 13461 transitions. [2023-08-27 02:56:53,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 125 states, 124 states have (on average 108.55645161290323) internal successors, (13461), 124 states have internal predecessors, (13461), 0 states have call successors, (0), 0 states 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 02:56:53,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 125 states, 125 states have (on average 342.0) internal successors, (42750), 125 states have internal predecessors, (42750), 0 states have call successors, (0), 0 states 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 02:56:53,431 INFO L81 ComplementDD]: Finished complementDD. Result has 125 states, 125 states have (on average 342.0) internal successors, (42750), 125 states have internal predecessors, (42750), 0 states have call successors, (0), 0 states 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 02:56:53,431 INFO L175 Difference]: Start difference. First operand has 252 places, 426 transitions, 5313 flow. Second operand 124 states and 13461 transitions. [2023-08-27 02:56:53,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 1265 transitions, 18911 flow [2023-08-27 02:56:53,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 1265 transitions, 18519 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-27 02:56:53,804 INFO L231 Difference]: Finished difference. Result has 375 places, 697 transitions, 9602 flow [2023-08-27 02:56:53,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=5076, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=124, PETRI_FLOW=9602, PETRI_PLACES=375, PETRI_TRANSITIONS=697} [2023-08-27 02:56:53,805 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 332 predicate places. [2023-08-27 02:56:53,805 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 697 transitions, 9602 flow [2023-08-27 02:56:53,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 104.81967213114754) internal successors, (6394), 61 states have internal predecessors, (6394), 0 states have call successors, (0), 0 states 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 02:56:53,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:53,806 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:53,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 02:56:54,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:56:54,012 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:56:54,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:54,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1171874212, now seen corresponding path program 2 times [2023-08-27 02:56:54,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:54,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994258486] [2023-08-27 02:56:54,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:54,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:56,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:56,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994258486] [2023-08-27 02:56:56,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994258486] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:56:56,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641140611] [2023-08-27 02:56:56,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:56:56,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:56:56,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:56:56,091 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 02:56:56,093 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 02:56:56,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:56:56,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:56:56,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 84 conjunts are in the unsatisfiable core [2023-08-27 02:56:56,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:56:56,257 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:56:56,258 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 15 [2023-08-27 02:56:56,456 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 02:56:56,558 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 21 treesize of output 21 [2023-08-27 02:56:56,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:56:56,845 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 30 treesize of output 25 [2023-08-27 02:56:57,324 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 56 treesize of output 32 [2023-08-27 02:56:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:57,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:00,819 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:57:00,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 02:57:00,828 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:57:00,828 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 49 treesize of output 52 [2023-08-27 02:57:00,835 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-08-27 02:57:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:01,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641140611] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:01,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:01,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 59 [2023-08-27 02:57:01,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340054196] [2023-08-27 02:57:01,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:01,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-08-27 02:57:01,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:01,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-08-27 02:57:01,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=3359, Unknown=12, NotChecked=0, Total=3660 [2023-08-27 02:57:01,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-27 02:57:01,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 697 transitions, 9602 flow. Second operand has 61 states, 61 states have (on average 100.81967213114754) internal successors, (6150), 61 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states 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 02:57:01,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:01,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-27 02:57:01,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:41,409 WARN L234 SmtUtils]: Spent 9.77s on a formula simplification. DAG size of input: 176 DAG size of output: 115 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 02:57:53,283 WARN L234 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 168 DAG size of output: 102 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 02:59:23,054 INFO L124 PetriNetUnfolderBase]: 16884/31169 cut-off events. [2023-08-27 02:59:23,054 INFO L125 PetriNetUnfolderBase]: For 485642/485642 co-relation queries the response was YES. [2023-08-27 02:59:23,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236931 conditions, 31169 events. 16884/31169 cut-off events. For 485642/485642 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 233263 event pairs, 1533 based on Foata normal form. 273/31442 useless extension candidates. Maximal degree in co-relation 219050. Up to 12844 conditions per place. [2023-08-27 02:59:23,781 INFO L140 encePairwiseOnDemand]: 317/342 looper letters, 860 selfloop transitions, 1402 changer transitions 164/2427 dead transitions. [2023-08-27 02:59:23,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 2427 transitions, 38122 flow [2023-08-27 02:59:23,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2023-08-27 02:59:23,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2023-08-27 02:59:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 20936 transitions. [2023-08-27 02:59:23,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30608187134502923 [2023-08-27 02:59:23,812 INFO L72 ComplementDD]: Start complementDD. Operand 200 states and 20936 transitions. [2023-08-27 02:59:23,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 20936 transitions. [2023-08-27 02:59:23,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:59:23,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 200 states and 20936 transitions. [2023-08-27 02:59:23,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 201 states, 200 states have (on average 104.68) internal successors, (20936), 200 states have internal predecessors, (20936), 0 states have call successors, (0), 0 states 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 02:59:23,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 201 states, 201 states have (on average 342.0) internal successors, (68742), 201 states have internal predecessors, (68742), 0 states have call successors, (0), 0 states 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 02:59:23,941 INFO L81 ComplementDD]: Finished complementDD. Result has 201 states, 201 states have (on average 342.0) internal successors, (68742), 201 states have internal predecessors, (68742), 0 states have call successors, (0), 0 states 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 02:59:23,942 INFO L175 Difference]: Start difference. First operand has 375 places, 697 transitions, 9602 flow. Second operand 200 states and 20936 transitions. [2023-08-27 02:59:23,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 2427 transitions, 38122 flow [2023-08-27 02:59:25,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 2427 transitions, 36196 flow, removed 268 selfloop flow, removed 22 redundant places. [2023-08-27 02:59:25,052 INFO L231 Difference]: Finished difference. Result has 566 places, 1530 transitions, 23125 flow [2023-08-27 02:59:25,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=8622, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=607, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=200, PETRI_FLOW=23125, PETRI_PLACES=566, PETRI_TRANSITIONS=1530} [2023-08-27 02:59:25,053 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 523 predicate places. [2023-08-27 02:59:25,053 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 1530 transitions, 23125 flow [2023-08-27 02:59:25,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 100.81967213114754) internal successors, (6150), 61 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states 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 02:59:25,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:59:25,054 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:59:25,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 02:59:25,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:59:25,254 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:59:25,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:59:25,255 INFO L85 PathProgramCache]: Analyzing trace with hash 90999732, now seen corresponding path program 2 times [2023-08-27 02:59:25,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:59:25,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799482294] [2023-08-27 02:59:25,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:59:25,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:59:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:59:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:59:25,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:59:25,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799482294] [2023-08-27 02:59:25,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799482294] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:59:25,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312057844] [2023-08-27 02:59:25,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:59:25,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:59:25,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:59:25,492 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 02:59:25,497 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 02:59:25,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:59:25,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:59:25,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 02:59:25,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:59:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:59:25,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:59:26,130 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:59:26,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312057844] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:59:26,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:59:26,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-08-27 02:59:26,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210275626] [2023-08-27 02:59:26,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:59:26,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 02:59:26,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:59:26,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 02:59:26,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-08-27 02:59:26,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 342 [2023-08-27 02:59:26,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 1530 transitions, 23125 flow. Second operand has 20 states, 20 states have (on average 141.25) internal successors, (2825), 20 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states 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 02:59:26,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:59:26,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 342 [2023-08-27 02:59:26,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:59:36,871 INFO L124 PetriNetUnfolderBase]: 17101/32050 cut-off events. [2023-08-27 02:59:36,872 INFO L125 PetriNetUnfolderBase]: For 563363/563363 co-relation queries the response was YES. [2023-08-27 02:59:37,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255117 conditions, 32050 events. 17101/32050 cut-off events. For 563363/563363 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 244063 event pairs, 3960 based on Foata normal form. 809/32859 useless extension candidates. Maximal degree in co-relation 254266. Up to 13050 conditions per place. [2023-08-27 02:59:37,456 INFO L140 encePairwiseOnDemand]: 332/342 looper letters, 1263 selfloop transitions, 749 changer transitions 9/2022 dead transitions. [2023-08-27 02:59:37,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 2022 transitions, 32459 flow [2023-08-27 02:59:37,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 02:59:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 02:59:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3392 transitions. [2023-08-27 02:59:37,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312229849987287 [2023-08-27 02:59:37,460 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3392 transitions. [2023-08-27 02:59:37,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3392 transitions. [2023-08-27 02:59:37,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:59:37,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3392 transitions. [2023-08-27 02:59:37,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 147.47826086956522) internal successors, (3392), 23 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states 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 02:59:37,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 342.0) internal successors, (8208), 24 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states 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 02:59:37,470 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 342.0) internal successors, (8208), 24 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states 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 02:59:37,470 INFO L175 Difference]: Start difference. First operand has 566 places, 1530 transitions, 23125 flow. Second operand 23 states and 3392 transitions. [2023-08-27 02:59:37,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 2022 transitions, 32459 flow [2023-08-27 02:59:38,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 2022 transitions, 29787 flow, removed 493 selfloop flow, removed 25 redundant places. [2023-08-27 02:59:38,646 INFO L231 Difference]: Finished difference. Result has 565 places, 1500 transitions, 21919 flow [2023-08-27 02:59:38,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=18119, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=634, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=738, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=21919, PETRI_PLACES=565, PETRI_TRANSITIONS=1500} [2023-08-27 02:59:38,647 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 522 predicate places. [2023-08-27 02:59:38,647 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 1500 transitions, 21919 flow [2023-08-27 02:59:38,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 141.25) internal successors, (2825), 20 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states 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 02:59:38,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:59:38,647 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:59:38,652 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 02:59:38,848 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,SelfDestructingSolverStorable21 [2023-08-27 02:59:38,848 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:59:38,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:59:38,848 INFO L85 PathProgramCache]: Analyzing trace with hash 509068628, now seen corresponding path program 3 times [2023-08-27 02:59:38,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:59:38,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282621779] [2023-08-27 02:59:38,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:59:38,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:59:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:59:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:59:41,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:59:41,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282621779] [2023-08-27 02:59:41,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282621779] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:59:41,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909137296] [2023-08-27 02:59:41,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:59:41,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:59:41,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:59:41,105 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 02:59:41,113 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 02:59:41,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 02:59:41,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:59:41,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 89 conjunts are in the unsatisfiable core [2023-08-27 02:59:41,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:59:41,326 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:59:41,326 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 24 [2023-08-27 02:59:41,988 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 02:59:42,080 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 21 treesize of output 21 [2023-08-27 02:59:42,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:59:42,797 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 30 treesize of output 25 [2023-08-27 02:59:43,782 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 56 treesize of output 32 [2023-08-27 02:59:43,893 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:59:43,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:59:45,916 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:59:45,917 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 02:59:45,933 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:59:45,933 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 49 treesize of output 52 [2023-08-27 02:59:45,941 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-08-27 02:59:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:59:46,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909137296] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:59:46,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:59:46,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 20] total 67 [2023-08-27 02:59:46,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704998855] [2023-08-27 02:59:46,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:59:46,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-08-27 02:59:46,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:59:46,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-08-27 02:59:46,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=4442, Unknown=5, NotChecked=0, Total=4692 [2023-08-27 02:59:46,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 342 [2023-08-27 02:59:46,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 1500 transitions, 21919 flow. Second operand has 69 states, 69 states have (on average 93.91304347826087) internal successors, (6480), 69 states have internal predecessors, (6480), 0 states have call successors, (0), 0 states 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 02:59:46,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:59:46,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 342 [2023-08-27 02:59:46,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:01:27,406 INFO L124 PetriNetUnfolderBase]: 22057/41196 cut-off events. [2023-08-27 03:01:27,406 INFO L125 PetriNetUnfolderBase]: For 686743/686743 co-relation queries the response was YES. [2023-08-27 03:01:27,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326322 conditions, 41196 events. 22057/41196 cut-off events. For 686743/686743 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 324061 event pairs, 2929 based on Foata normal form. 102/41298 useless extension candidates. Maximal degree in co-relation 325881. Up to 16651 conditions per place. [2023-08-27 03:01:27,981 INFO L140 encePairwiseOnDemand]: 322/342 looper letters, 749 selfloop transitions, 2038 changer transitions 26/2813 dead transitions. [2023-08-27 03:01:27,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 2813 transitions, 46045 flow [2023-08-27 03:01:27,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2023-08-27 03:01:27,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2023-08-27 03:01:27,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 17422 transitions. [2023-08-27 03:01:27,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2830084470435348 [2023-08-27 03:01:27,997 INFO L72 ComplementDD]: Start complementDD. Operand 180 states and 17422 transitions. [2023-08-27 03:01:27,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 17422 transitions. [2023-08-27 03:01:28,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:01:28,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 180 states and 17422 transitions. [2023-08-27 03:01:28,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 181 states, 180 states have (on average 96.78888888888889) internal successors, (17422), 180 states have internal predecessors, (17422), 0 states have call successors, (0), 0 states 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 03:01:28,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 181 states, 181 states have (on average 342.0) internal successors, (61902), 181 states have internal predecessors, (61902), 0 states have call successors, (0), 0 states 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 03:01:28,064 INFO L81 ComplementDD]: Finished complementDD. Result has 181 states, 181 states have (on average 342.0) internal successors, (61902), 181 states have internal predecessors, (61902), 0 states have call successors, (0), 0 states 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 03:01:28,064 INFO L175 Difference]: Start difference. First operand has 565 places, 1500 transitions, 21919 flow. Second operand 180 states and 17422 transitions. [2023-08-27 03:01:28,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 744 places, 2813 transitions, 46045 flow [2023-08-27 03:01:29,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 736 places, 2813 transitions, 44927 flow, removed 269 selfloop flow, removed 8 redundant places. [2023-08-27 03:01:29,496 INFO L231 Difference]: Finished difference. Result has 750 places, 2162 transitions, 34926 flow [2023-08-27 03:01:29,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=21094, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1383, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=180, PETRI_FLOW=34926, PETRI_PLACES=750, PETRI_TRANSITIONS=2162} [2023-08-27 03:01:29,497 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 707 predicate places. [2023-08-27 03:01:29,498 INFO L495 AbstractCegarLoop]: Abstraction has has 750 places, 2162 transitions, 34926 flow [2023-08-27 03:01:29,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 93.91304347826087) internal successors, (6480), 69 states have internal predecessors, (6480), 0 states have call successors, (0), 0 states 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 03:01:29,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:01:29,499 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:01:29,503 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 03:01:29,699 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,SelfDestructingSolverStorable22 [2023-08-27 03:01:29,699 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 03:01:29,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:01:29,699 INFO L85 PathProgramCache]: Analyzing trace with hash -961008362, now seen corresponding path program 4 times [2023-08-27 03:01:29,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:01:29,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469049416] [2023-08-27 03:01:29,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:01:29,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:01:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:01:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:01:30,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:01:30,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469049416] [2023-08-27 03:01:30,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469049416] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 03:01:30,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262583955] [2023-08-27 03:01:30,057 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 03:01:30,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 03:01:30,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 03:01:30,061 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 03:01:30,067 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 03:01:30,222 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 03:01:30,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 03:01:30,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 03:01:30,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 03:01:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:01:30,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 03:01:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:01:30,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262583955] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 03:01:30,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 03:01:30,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 11 [2023-08-27 03:01:30,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338796591] [2023-08-27 03:01:30,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 03:01:30,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 03:01:30,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:01:30,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 03:01:30,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-08-27 03:01:30,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 342 [2023-08-27 03:01:30,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 750 places, 2162 transitions, 34926 flow. Second operand has 12 states, 12 states have (on average 136.75) internal successors, (1641), 12 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states 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 03:01:30,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:01:30,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 342 [2023-08-27 03:01:30,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:01:46,323 INFO L124 PetriNetUnfolderBase]: 22904/42892 cut-off events. [2023-08-27 03:01:46,323 INFO L125 PetriNetUnfolderBase]: For 725340/725340 co-relation queries the response was YES. [2023-08-27 03:01:47,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354573 conditions, 42892 events. 22904/42892 cut-off events. For 725340/725340 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 340286 event pairs, 8322 based on Foata normal form. 42/42934 useless extension candidates. Maximal degree in co-relation 352563. Up to 19708 conditions per place. [2023-08-27 03:01:47,330 INFO L140 encePairwiseOnDemand]: 332/342 looper letters, 1779 selfloop transitions, 593 changer transitions 21/2394 dead transitions. [2023-08-27 03:01:47,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 762 places, 2394 transitions, 43084 flow [2023-08-27 03:01:47,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 03:01:47,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 03:01:47,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1858 transitions. [2023-08-27 03:01:47,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4179037336932074 [2023-08-27 03:01:47,332 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1858 transitions. [2023-08-27 03:01:47,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1858 transitions. [2023-08-27 03:01:47,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:01:47,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1858 transitions. [2023-08-27 03:01:47,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 142.92307692307693) internal successors, (1858), 13 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states 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 03:01:47,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 342.0) internal successors, (4788), 14 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states 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 03:01:47,337 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 342.0) internal successors, (4788), 14 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states 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 03:01:47,337 INFO L175 Difference]: Start difference. First operand has 750 places, 2162 transitions, 34926 flow. Second operand 13 states and 1858 transitions. [2023-08-27 03:01:47,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 762 places, 2394 transitions, 43084 flow [2023-08-27 03:01:49,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 727 places, 2394 transitions, 40885 flow, removed 492 selfloop flow, removed 35 redundant places. [2023-08-27 03:01:49,499 INFO L231 Difference]: Finished difference. Result has 736 places, 2224 transitions, 36355 flow [2023-08-27 03:01:49,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=32759, PETRI_DIFFERENCE_MINUEND_PLACES=715, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=533, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=36355, PETRI_PLACES=736, PETRI_TRANSITIONS=2224} [2023-08-27 03:01:49,501 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 693 predicate places. [2023-08-27 03:01:49,502 INFO L495 AbstractCegarLoop]: Abstraction has has 736 places, 2224 transitions, 36355 flow [2023-08-27 03:01:49,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 136.75) internal successors, (1641), 12 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states 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 03:01:49,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:01:49,502 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:01:49,509 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 03:01:49,708 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,SelfDestructingSolverStorable23 [2023-08-27 03:01:49,708 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 03:01:49,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:01:49,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1516773300, now seen corresponding path program 5 times [2023-08-27 03:01:49,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:01:49,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273820823] [2023-08-27 03:01:49,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:01:49,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:01:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:01:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-27 03:01:51,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:01:51,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273820823] [2023-08-27 03:01:51,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273820823] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 03:01:51,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580802111] [2023-08-27 03:01:51,754 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 03:01:51,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 03:01:51,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 03:01:51,755 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 03:01:51,756 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 03:01:51,932 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-27 03:01:51,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 03:01:51,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 94 conjunts are in the unsatisfiable core [2023-08-27 03:01:51,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 03:01:51,983 INFO L322 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-08-27 03:01:51,983 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 29 treesize of output 34 [2023-08-27 03:01:52,705 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 03:01:53,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 03:01:53,264 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 30 treesize of output 25 [2023-08-27 03:01:53,367 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 21 treesize of output 21 [2023-08-27 03:01:54,268 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 56 treesize of output 32 [2023-08-27 03:01:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:01:54,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 03:01:55,249 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1091 (Array Int Int))) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1091) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (- 4) (* c_~top~0 4))) 4294967296)))) is different from false [2023-08-27 03:01:58,670 INFO L322 Elim1Store]: treesize reduction 27, result has 61.4 percent of original size [2023-08-27 03:01:58,671 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 60 [2023-08-27 03:01:58,689 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 03:01:58,689 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 67 treesize of output 70 [2023-08-27 03:01:58,696 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-08-27 03:02:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 17 proven. 17 refuted. 4 times theorem prover too weak. 9 trivial. 3 not checked. [2023-08-27 03:02:03,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580802111] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 03:02:03,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 03:02:03,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 22] total 74 [2023-08-27 03:02:03,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116019213] [2023-08-27 03:02:03,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 03:02:03,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-08-27 03:02:03,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:02:03,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-08-27 03:02:03,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=5191, Unknown=18, NotChecked=146, Total=5700 [2023-08-27 03:02:03,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-27 03:02:03,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 736 places, 2224 transitions, 36355 flow. Second operand has 76 states, 76 states have (on average 100.82894736842105) internal successors, (7663), 76 states have internal predecessors, (7663), 0 states have call successors, (0), 0 states 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 03:02:03,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:02:03,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-27 03:02:03,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:03:19,578 INFO L124 PetriNetUnfolderBase]: 29670/55483 cut-off events. [2023-08-27 03:03:19,579 INFO L125 PetriNetUnfolderBase]: For 981810/981810 co-relation queries the response was YES. [2023-08-27 03:03:20,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461300 conditions, 55483 events. 29670/55483 cut-off events. For 981810/981810 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 458694 event pairs, 2829 based on Foata normal form. 108/55590 useless extension candidates. Maximal degree in co-relation 457072. Up to 22341 conditions per place. [2023-08-27 03:03:20,765 INFO L140 encePairwiseOnDemand]: 318/342 looper letters, 959 selfloop transitions, 2800 changer transitions 39/3799 dead transitions. [2023-08-27 03:03:20,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 977 places, 3799 transitions, 67173 flow [2023-08-27 03:03:20,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2023-08-27 03:03:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2023-08-27 03:03:20,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 25154 transitions. [2023-08-27 03:03:20,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30392441157991396 [2023-08-27 03:03:20,785 INFO L72 ComplementDD]: Start complementDD. Operand 242 states and 25154 transitions. [2023-08-27 03:03:20,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 242 states and 25154 transitions. [2023-08-27 03:03:20,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:03:20,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 242 states and 25154 transitions. [2023-08-27 03:03:20,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 243 states, 242 states have (on average 103.94214876033058) internal successors, (25154), 242 states have internal predecessors, (25154), 0 states have call successors, (0), 0 states 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 03:03:20,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 243 states, 243 states have (on average 342.0) internal successors, (83106), 243 states have internal predecessors, (83106), 0 states have call successors, (0), 0 states 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 03:03:20,895 INFO L81 ComplementDD]: Finished complementDD. Result has 243 states, 243 states have (on average 342.0) internal successors, (83106), 243 states have internal predecessors, (83106), 0 states have call successors, (0), 0 states 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 03:03:20,895 INFO L175 Difference]: Start difference. First operand has 736 places, 2224 transitions, 36355 flow. Second operand 242 states and 25154 transitions. [2023-08-27 03:03:20,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 977 places, 3799 transitions, 67173 flow [2023-08-27 03:03:24,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 975 places, 3799 transitions, 67121 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-27 03:03:24,080 INFO L231 Difference]: Finished difference. Result has 992 places, 2953 transitions, 54251 flow [2023-08-27 03:03:24,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=36303, PETRI_DIFFERENCE_MINUEND_PLACES=734, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2096, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=242, PETRI_FLOW=54251, PETRI_PLACES=992, PETRI_TRANSITIONS=2953} [2023-08-27 03:03:24,083 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 949 predicate places. [2023-08-27 03:03:24,083 INFO L495 AbstractCegarLoop]: Abstraction has has 992 places, 2953 transitions, 54251 flow [2023-08-27 03:03:24,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 100.82894736842105) internal successors, (7663), 76 states have internal predecessors, (7663), 0 states have call successors, (0), 0 states 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 03:03:24,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:03:24,085 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:03:24,094 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 03:03:24,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 03:03:24,292 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 03:03:24,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:03:24,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2025921588, now seen corresponding path program 3 times [2023-08-27 03:03:24,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:03:24,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328300417] [2023-08-27 03:03:24,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:03:24,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:03:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:03:24,658 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 79 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 03:03:24,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:03:24,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328300417] [2023-08-27 03:03:24,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328300417] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 03:03:24,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528060520] [2023-08-27 03:03:24,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 03:03:24,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 03:03:24,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 03:03:24,660 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 03:03:24,661 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 03:03:24,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-27 03:03:24,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 03:03:24,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 03:03:24,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 03:03:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 03:03:25,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 03:03:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 03:03:25,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528060520] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 03:03:25,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 03:03:25,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 24 [2023-08-27 03:03:25,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320560292] [2023-08-27 03:03:25,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 03:03:25,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 03:03:25,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:03:25,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 03:03:25,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2023-08-27 03:03:25,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 342 [2023-08-27 03:03:25,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 992 places, 2953 transitions, 54251 flow. Second operand has 25 states, 25 states have (on average 136.12) internal successors, (3403), 25 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states 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 03:03:25,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:03:25,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 342 [2023-08-27 03:03:25,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:04:00,547 INFO L124 PetriNetUnfolderBase]: 37305/69622 cut-off events. [2023-08-27 03:04:00,548 INFO L125 PetriNetUnfolderBase]: For 1291071/1291071 co-relation queries the response was YES. [2023-08-27 03:04:02,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613363 conditions, 69622 events. 37305/69622 cut-off events. For 1291071/1291071 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 583648 event pairs, 10771 based on Foata normal form. 282/69904 useless extension candidates. Maximal degree in co-relation 611344. Up to 28249 conditions per place. [2023-08-27 03:04:02,553 INFO L140 encePairwiseOnDemand]: 333/342 looper letters, 3224 selfloop transitions, 1368 changer transitions 18/4611 dead transitions. [2023-08-27 03:04:02,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1021 places, 4611 transitions, 90034 flow [2023-08-27 03:04:02,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-27 03:04:02,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-27 03:04:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4299 transitions. [2023-08-27 03:04:02,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4190058479532164 [2023-08-27 03:04:02,556 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4299 transitions. [2023-08-27 03:04:02,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4299 transitions. [2023-08-27 03:04:02,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:04:02,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4299 transitions. [2023-08-27 03:04:02,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 143.3) internal successors, (4299), 30 states have internal predecessors, (4299), 0 states have call successors, (0), 0 states 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 03:04:02,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 342.0) internal successors, (10602), 31 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states 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 03:04:02,563 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 342.0) internal successors, (10602), 31 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states 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 03:04:02,563 INFO L175 Difference]: Start difference. First operand has 992 places, 2953 transitions, 54251 flow. Second operand 30 states and 4299 transitions. [2023-08-27 03:04:02,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1021 places, 4611 transitions, 90034 flow [2023-08-27 03:04:09,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 975 places, 4611 transitions, 88664 flow, removed 365 selfloop flow, removed 46 redundant places. [2023-08-27 03:04:09,340 INFO L231 Difference]: Finished difference. Result has 989 places, 3288 transitions, 65657 flow [2023-08-27 03:04:09,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=53051, PETRI_DIFFERENCE_MINUEND_PLACES=946, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2947, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1075, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=65657, PETRI_PLACES=989, PETRI_TRANSITIONS=3288} [2023-08-27 03:04:09,342 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 946 predicate places. [2023-08-27 03:04:09,342 INFO L495 AbstractCegarLoop]: Abstraction has has 989 places, 3288 transitions, 65657 flow [2023-08-27 03:04:09,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 136.12) internal successors, (3403), 25 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states 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 03:04:09,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:04:09,343 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:04:09,348 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 03:04:09,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 03:04:09,543 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 03:04:09,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:04:09,543 INFO L85 PathProgramCache]: Analyzing trace with hash -534938798, now seen corresponding path program 6 times [2023-08-27 03:04:09,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:04:09,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76515618] [2023-08-27 03:04:09,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:04:09,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:04:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:04:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:04:15,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:04:15,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76515618] [2023-08-27 03:04:15,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76515618] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 03:04:15,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720337500] [2023-08-27 03:04:15,435 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 03:04:15,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 03:04:15,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 03:04:15,436 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 03:04:15,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 03:04:15,641 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 03:04:15,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 03:04:15,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 93 conjunts are in the unsatisfiable core [2023-08-27 03:04:15,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 03:04:16,069 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 15 treesize of output 11 [2023-08-27 03:04:16,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 03:04:16,788 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 40 treesize of output 30 [2023-08-27 03:04:17,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 03:04:17,502 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 40 treesize of output 30 [2023-08-27 03:04:19,010 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 80 treesize of output 32 [2023-08-27 03:04:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:04:19,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 03:04:23,733 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 54 treesize of output 46 [2023-08-27 03:04:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:04:24,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720337500] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 03:04:24,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 03:04:24,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26, 25] total 79 [2023-08-27 03:04:24,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598899123] [2023-08-27 03:04:24,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 03:04:24,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-08-27 03:04:24,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:04:24,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-08-27 03:04:24,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=5871, Unknown=0, NotChecked=0, Total=6320 [2023-08-27 03:04:24,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-27 03:04:24,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 989 places, 3288 transitions, 65657 flow. Second operand has 80 states, 80 states have (on average 100.9875) internal successors, (8079), 80 states have internal predecessors, (8079), 0 states have call successors, (0), 0 states 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 03:04:24,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:04:24,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-27 03:04:24,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:07:10,182 WARN L234 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 161 DAG size of output: 142 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-08-27 03:08:50,651 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 03:08:50,658 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 03:08:50,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2023-08-27 03:08:50,681 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err2ASSERT_VIOLATIONASSERT (21 of 22 remaining) [2023-08-27 03:08:50,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 03:08:50,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 03:08:50,882 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 285 known predicates. [2023-08-27 03:08:50,883 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 22 remaining) [2023-08-27 03:08:50,883 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 22 remaining) [2023-08-27 03:08:50,884 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err2ASSERT_VIOLATIONASSERT (18 of 22 remaining) [2023-08-27 03:08:50,884 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-27 03:08:50,884 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-27 03:08:50,884 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-27 03:08:50,884 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-27 03:08:50,884 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-27 03:08:50,884 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-27 03:08:50,884 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-27 03:08:50,884 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-27 03:08:50,884 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err2ASSERT_VIOLATIONASSERT (9 of 22 remaining) [2023-08-27 03:08:50,884 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err2ASSERT_VIOLATIONASSERT (8 of 22 remaining) [2023-08-27 03:08:50,885 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-27 03:08:50,885 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-27 03:08:50,885 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-27 03:08:50,885 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-27 03:08:50,885 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-27 03:08:50,885 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-27 03:08:50,885 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-27 03:08:50,885 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-27 03:08:50,885 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:08:50,890 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 03:08:50,890 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 03:08:50,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 03:08:50 BasicIcfg [2023-08-27 03:08:50,893 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 03:08:50,894 INFO L158 Benchmark]: Toolchain (without parser) took 794441.28ms. Allocated memory was 388.0MB in the beginning and 11.7GB in the end (delta: 11.3GB). Free memory was 361.5MB in the beginning and 6.0GB in the end (delta: -5.6GB). Peak memory consumption was 5.7GB. Max. memory is 16.0GB. [2023-08-27 03:08:50,894 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 388.0MB. Free memory was 365.2MB in the beginning and 365.1MB in the end (delta: 91.6kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 03:08:50,894 INFO L158 Benchmark]: CACSL2BoogieTranslator took 651.24ms. Allocated memory is still 388.0MB. Free memory was 361.5MB in the beginning and 332.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-27 03:08:50,894 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.23ms. Allocated memory is still 388.0MB. Free memory was 332.1MB in the beginning and 329.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-27 03:08:50,895 INFO L158 Benchmark]: Boogie Preprocessor took 41.12ms. Allocated memory is still 388.0MB. Free memory was 329.1MB in the beginning and 327.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 03:08:50,895 INFO L158 Benchmark]: RCFGBuilder took 435.88ms. Allocated memory is still 388.0MB. Free memory was 327.6MB in the beginning and 308.1MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-27 03:08:50,895 INFO L158 Benchmark]: TraceAbstraction took 793239.74ms. Allocated memory was 388.0MB in the beginning and 11.7GB in the end (delta: 11.3GB). Free memory was 307.6MB in the beginning and 6.0GB in the end (delta: -5.7GB). Peak memory consumption was 5.7GB. Max. memory is 16.0GB. [2023-08-27 03:08:50,896 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 388.0MB. Free memory was 365.2MB in the beginning and 365.1MB in the end (delta: 91.6kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 651.24ms. Allocated memory is still 388.0MB. Free memory was 361.5MB in the beginning and 332.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 68.23ms. Allocated memory is still 388.0MB. Free memory was 332.1MB in the beginning and 329.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 41.12ms. Allocated memory is still 388.0MB. Free memory was 329.1MB in the beginning and 327.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 435.88ms. Allocated memory is still 388.0MB. Free memory was 327.6MB in the beginning and 308.1MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 793239.74ms. Allocated memory was 388.0MB in the beginning and 11.7GB in the end (delta: 11.3GB). Free memory was 307.6MB in the beginning and 6.0GB in the end (delta: -5.7GB). Peak memory consumption was 5.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 753]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [753] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 159 PlacesBefore, 43 PlacesAfterwards, 164 TransitionsBefore, 41 TransitionsAfterwards, 9540 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 112 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 7 ChoiceCompositions, 167 TotalNumberOfCompositions, 14007 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10772, independent: 10556, independent conditional: 0, independent unconditional: 10556, dependent: 216, dependent conditional: 0, dependent unconditional: 216, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5647, independent: 5590, independent conditional: 0, independent unconditional: 5590, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10772, independent: 4966, independent conditional: 0, independent unconditional: 4966, dependent: 159, dependent conditional: 0, dependent unconditional: 159, unknown: 5647, unknown conditional: 0, unknown unconditional: 5647] , Statistics on independence cache: Total cache size (in pairs): 242, Positive cache size: 222, Positive conditional cache size: 0, Positive unconditional cache size: 222, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 20]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 285 known predicates. - TimeoutResultAtElement [Line: 1021]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 285 known predicates. - TimeoutResultAtElement [Line: 1022]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 285 known predicates. - TimeoutResultAtElement [Line: 20]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 285 known predicates. - TimeoutResultAtElement [Line: 991]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 285 known predicates. - TimeoutResultAtElement [Line: 945]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 285 known predicates. - TimeoutResultAtElement [Line: 991]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 285 known predicates. - TimeoutResultAtElement [Line: 945]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 285 known predicates. - TimeoutResultAtElement [Line: 1005]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 285 known predicates. - TimeoutResultAtElement [Line: 1005]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 285 known predicates. - TimeoutResultAtElement [Line: 949]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 285 known predicates. - TimeoutResultAtElement [Line: 949]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 285 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 280 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 793.1s, OverallIterations: 27, TraceHistogramMax: 6, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 726.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 896 mSolverCounterUnknown, 19019 SdHoareTripleChecker+Valid, 131.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19019 mSDsluCounter, 92 SdHoareTripleChecker+Invalid, 122.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1773 IncrementalHoareTripleChecker+Unchecked, 88 mSDsCounter, 1549 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73055 IncrementalHoareTripleChecker+Invalid, 77273 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1549 mSolverCounterUnsat, 4 mSDtfsCounter, 73055 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 896 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2438 GetRequests, 740 SyntacticMatches, 30 SemanticMatches, 1667 ConstructedPredicates, 2 IntricatePredicates, 15 DeprecatedPredicates, 124393 ImplicationChecksByTransitivity, 480.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65657occurred in iteration=26, InterpolantAutomatonStates: 1044, 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: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 55.7s InterpolantComputationTime, 1215 NumberOfCodeBlocks, 1207 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 1588 ConstructedInterpolants, 28 QuantifiedInterpolants, 32139 SizeOfPredicates, 241 NumberOfNonLiveVariables, 4801 ConjunctsInSsa, 613 ConjunctsInUnsatCore, 53 InterpolantComputations, 16 PerfectInterpolantSequences, 272/1104 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