/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/weaver/popl20-mult-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 08:16:24,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 08:16:24,592 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 08:16:24,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 08:16:24,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 08:16:24,630 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 08:16:24,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 08:16:24,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 08:16:24,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 08:16:24,640 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 08:16:24,640 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 08:16:24,640 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 08:16:24,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 08:16:24,642 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 08:16:24,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 08:16:24,642 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 08:16:24,643 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 08:16:24,643 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 08:16:24,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 08:16:24,643 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 08:16:24,644 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 08:16:24,645 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 08:16:24,645 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 08:16:24,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 08:16:24,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 08:16:24,646 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 08:16:24,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 08:16:24,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 08:16:24,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 08:16:24,647 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 08:16:24,648 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 08:16:24,648 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 08:16:24,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 08:16:24,649 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 08:16:24,649 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 08:16:24,649 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 08:16:24,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 08:16:25,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 08:16:25,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 08:16:25,013 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 08:16:25,013 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 08:16:25,015 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2023-08-27 08:16:26,295 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 08:16:26,527 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 08:16:26,527 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2023-08-27 08:16:26,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1ca29529/f2db3dd950c2406ca47fcb739b823761/FLAG9051c0f46 [2023-08-27 08:16:26,551 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1ca29529/f2db3dd950c2406ca47fcb739b823761 [2023-08-27 08:16:26,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 08:16:26,558 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 08:16:26,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 08:16:26,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 08:16:26,564 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 08:16:26,565 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 08:16:26" (1/1) ... [2023-08-27 08:16:26,566 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4c9e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:16:26, skipping insertion in model container [2023-08-27 08:16:26,566 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 08:16:26" (1/1) ... [2023-08-27 08:16:26,590 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 08:16:26,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 08:16:26,780 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 08:16:26,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 08:16:26,823 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 08:16:26,823 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 08:16:26,833 INFO L206 MainTranslator]: Completed translation [2023-08-27 08:16:26,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:16:26 WrapperNode [2023-08-27 08:16:26,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 08:16:26,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 08:16:26,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 08:16:26,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 08:16:26,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:16:26" (1/1) ... [2023-08-27 08:16:26,855 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:16:26" (1/1) ... [2023-08-27 08:16:26,878 INFO L138 Inliner]: procedures = 22, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-08-27 08:16:26,878 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 08:16:26,879 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 08:16:26,879 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 08:16:26,879 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 08:16:26,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:16:26" (1/1) ... [2023-08-27 08:16:26,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:16:26" (1/1) ... [2023-08-27 08:16:26,892 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:16:26" (1/1) ... [2023-08-27 08:16:26,893 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:16:26" (1/1) ... [2023-08-27 08:16:26,908 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:16:26" (1/1) ... [2023-08-27 08:16:26,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:16:26" (1/1) ... [2023-08-27 08:16:26,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:16:26" (1/1) ... [2023-08-27 08:16:26,913 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:16:26" (1/1) ... [2023-08-27 08:16:26,921 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 08:16:26,922 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 08:16:26,922 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 08:16:26,922 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 08:16:26,923 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:16:26" (1/1) ... [2023-08-27 08:16:26,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 08:16:26,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:16:26,950 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 08:16:26,952 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 08:16:26,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 08:16:26,981 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 08:16:26,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 08:16:26,983 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 08:16:26,983 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 08:16:26,983 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 08:16:26,983 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 08:16:26,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 08:16:26,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 08:16:26,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 08:16:26,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 08:16:26,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 08:16:26,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 08:16:26,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 08:16:26,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 08:16:26,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 08:16:26,986 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 08:16:27,091 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 08:16:27,093 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 08:16:27,366 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 08:16:27,419 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 08:16:27,420 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-27 08:16:27,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 08:16:27 BoogieIcfgContainer [2023-08-27 08:16:27,422 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 08:16:27,424 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 08:16:27,424 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 08:16:27,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 08:16:27,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 08:16:26" (1/3) ... [2023-08-27 08:16:27,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624a0760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 08:16:27, skipping insertion in model container [2023-08-27 08:16:27,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:16:26" (2/3) ... [2023-08-27 08:16:27,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624a0760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 08:16:27, skipping insertion in model container [2023-08-27 08:16:27,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 08:16:27" (3/3) ... [2023-08-27 08:16:27,430 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2023-08-27 08:16:27,446 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 08:16:27,447 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-27 08:16:27,447 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 08:16:27,515 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 08:16:27,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 95 transitions, 214 flow [2023-08-27 08:16:27,622 INFO L124 PetriNetUnfolderBase]: 7/92 cut-off events. [2023-08-27 08:16:27,623 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 08:16:27,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 92 events. 7/92 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-08-27 08:16:27,628 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 95 transitions, 214 flow [2023-08-27 08:16:27,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 81 transitions, 180 flow [2023-08-27 08:16:27,638 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 08:16:27,657 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 81 transitions, 180 flow [2023-08-27 08:16:27,660 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 81 transitions, 180 flow [2023-08-27 08:16:27,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 81 transitions, 180 flow [2023-08-27 08:16:27,702 INFO L124 PetriNetUnfolderBase]: 7/81 cut-off events. [2023-08-27 08:16:27,702 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 08:16:27,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 7/81 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-08-27 08:16:27,706 INFO L119 LiptonReduction]: Number of co-enabled transitions 860 [2023-08-27 08:16:30,139 INFO L134 LiptonReduction]: Checked pairs total: 1272 [2023-08-27 08:16:30,140 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-08-27 08:16:30,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 08:16:30,155 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;@5bc47ef2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 08:16:30,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-27 08:16:30,160 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 08:16:30,160 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2023-08-27 08:16:30,161 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 08:16:30,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:16:30,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:16:30,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:16:30,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:16:30,166 INFO L85 PathProgramCache]: Analyzing trace with hash -107022905, now seen corresponding path program 1 times [2023-08-27 08:16:30,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:16:30,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147953532] [2023-08-27 08:16:30,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:30,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:16:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:30,709 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 08:16:30,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:16:30,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147953532] [2023-08-27 08:16:30,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147953532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:16:30,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:16:30,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 08:16:30,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293284417] [2023-08-27 08:16:30,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:16:30,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:16:30,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:16:30,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:16:30,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:16:30,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 159 [2023-08-27 08:16:30,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:30,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:16:30,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 159 [2023-08-27 08:16:30,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:16:30,891 INFO L124 PetriNetUnfolderBase]: 271/426 cut-off events. [2023-08-27 08:16:30,892 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-08-27 08:16:30,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 426 events. 271/426 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1520 event pairs, 37 based on Foata normal form. 1/277 useless extension candidates. Maximal degree in co-relation 671. Up to 309 conditions per place. [2023-08-27 08:16:30,900 INFO L140 encePairwiseOnDemand]: 154/159 looper letters, 30 selfloop transitions, 4 changer transitions 1/39 dead transitions. [2023-08-27 08:16:30,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 181 flow [2023-08-27 08:16:30,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:16:30,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:16:30,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2023-08-27 08:16:30,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5660377358490566 [2023-08-27 08:16:30,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2023-08-27 08:16:30,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2023-08-27 08:16:30,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:16:30,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2023-08-27 08:16:30,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:30,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:30,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:30,937 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 3 states and 270 transitions. [2023-08-27 08:16:30,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 181 flow [2023-08-27 08:16:30,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 39 transitions, 159 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 08:16:30,943 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 78 flow [2023-08-27 08:16:30,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2023-08-27 08:16:30,947 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-08-27 08:16:30,948 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 78 flow [2023-08-27 08:16:30,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:30,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:16:30,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:16:30,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 08:16:30,949 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:16:30,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:16:30,958 INFO L85 PathProgramCache]: Analyzing trace with hash 924106453, now seen corresponding path program 1 times [2023-08-27 08:16:30,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:16:30,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256132364] [2023-08-27 08:16:30,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:30,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:16:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:31,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:16:31,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256132364] [2023-08-27 08:16:31,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256132364] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:16:31,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:16:31,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:16:31,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103435254] [2023-08-27 08:16:31,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:16:31,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 08:16:31,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:16:31,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 08:16:31,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 08:16:31,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 159 [2023-08-27 08:16:31,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:31,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:16:31,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 159 [2023-08-27 08:16:31,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:16:31,536 INFO L124 PetriNetUnfolderBase]: 459/707 cut-off events. [2023-08-27 08:16:31,536 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-27 08:16:31,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 707 events. 459/707 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2558 event pairs, 40 based on Foata normal form. 40/747 useless extension candidates. Maximal degree in co-relation 353. Up to 277 conditions per place. [2023-08-27 08:16:31,540 INFO L140 encePairwiseOnDemand]: 152/159 looper letters, 72 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2023-08-27 08:16:31,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 84 transitions, 395 flow [2023-08-27 08:16:31,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:16:31,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:16:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 567 transitions. [2023-08-27 08:16:31,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2023-08-27 08:16:31,543 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 567 transitions. [2023-08-27 08:16:31,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 567 transitions. [2023-08-27 08:16:31,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:16:31,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 567 transitions. [2023-08-27 08:16:31,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:31,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:31,549 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:31,549 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 78 flow. Second operand 7 states and 567 transitions. [2023-08-27 08:16:31,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 84 transitions, 395 flow [2023-08-27 08:16:31,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 84 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 08:16:31,552 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 154 flow [2023-08-27 08:16:31,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=154, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-08-27 08:16:31,552 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2023-08-27 08:16:31,553 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 154 flow [2023-08-27 08:16:31,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:31,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:16:31,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:16:31,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 08:16:31,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:16:31,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:16:31,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1821619291, now seen corresponding path program 2 times [2023-08-27 08:16:31,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:16:31,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226322212] [2023-08-27 08:16:31,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:31,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:16:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:31,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:16:31,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226322212] [2023-08-27 08:16:31,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226322212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:16:31,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:16:31,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 08:16:31,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366238677] [2023-08-27 08:16:31,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:16:31,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:16:31,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:16:31,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:16:31,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:16:31,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 159 [2023-08-27 08:16:31,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:31,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:16:31,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 159 [2023-08-27 08:16:31,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:16:32,034 INFO L124 PetriNetUnfolderBase]: 947/1447 cut-off events. [2023-08-27 08:16:32,034 INFO L125 PetriNetUnfolderBase]: For 825/825 co-relation queries the response was YES. [2023-08-27 08:16:32,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4066 conditions, 1447 events. 947/1447 cut-off events. For 825/825 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6101 event pairs, 99 based on Foata normal form. 24/1471 useless extension candidates. Maximal degree in co-relation 2968. Up to 478 conditions per place. [2023-08-27 08:16:32,044 INFO L140 encePairwiseOnDemand]: 152/159 looper letters, 96 selfloop transitions, 19 changer transitions 0/115 dead transitions. [2023-08-27 08:16:32,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 115 transitions, 646 flow [2023-08-27 08:16:32,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:16:32,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:16:32,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 585 transitions. [2023-08-27 08:16:32,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256064690026954 [2023-08-27 08:16:32,046 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 585 transitions. [2023-08-27 08:16:32,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 585 transitions. [2023-08-27 08:16:32,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:16:32,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 585 transitions. [2023-08-27 08:16:32,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:32,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:32,051 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:32,051 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 154 flow. Second operand 7 states and 585 transitions. [2023-08-27 08:16:32,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 115 transitions, 646 flow [2023-08-27 08:16:32,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 115 transitions, 646 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 08:16:32,058 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 308 flow [2023-08-27 08:16:32,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2023-08-27 08:16:32,059 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2023-08-27 08:16:32,059 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 308 flow [2023-08-27 08:16:32,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:32,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:16:32,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:16:32,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 08:16:32,060 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:16:32,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:16:32,060 INFO L85 PathProgramCache]: Analyzing trace with hash 550661333, now seen corresponding path program 3 times [2023-08-27 08:16:32,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:16:32,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436274725] [2023-08-27 08:16:32,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:32,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:16:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:32,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:32,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:16:32,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436274725] [2023-08-27 08:16:32,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436274725] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:16:32,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949526738] [2023-08-27 08:16:32,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 08:16:32,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:16:32,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:16:32,193 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 08:16:32,225 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 08:16:32,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 08:16:32,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:16:32,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 08:16:32,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:16:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:32,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:16:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:32,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949526738] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 08:16:32,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 08:16:32,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2023-08-27 08:16:32,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039137181] [2023-08-27 08:16:32,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:16:32,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:16:32,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:16:32,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:16:32,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-27 08:16:32,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 159 [2023-08-27 08:16:32,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:32,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:16:32,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 159 [2023-08-27 08:16:32,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:16:32,766 INFO L124 PetriNetUnfolderBase]: 1079/1685 cut-off events. [2023-08-27 08:16:32,766 INFO L125 PetriNetUnfolderBase]: For 4245/4245 co-relation queries the response was YES. [2023-08-27 08:16:32,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6157 conditions, 1685 events. 1079/1685 cut-off events. For 4245/4245 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7484 event pairs, 185 based on Foata normal form. 30/1715 useless extension candidates. Maximal degree in co-relation 4517. Up to 695 conditions per place. [2023-08-27 08:16:32,780 INFO L140 encePairwiseOnDemand]: 151/159 looper letters, 70 selfloop transitions, 30 changer transitions 0/100 dead transitions. [2023-08-27 08:16:32,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 100 transitions, 745 flow [2023-08-27 08:16:32,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:16:32,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:16:32,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 563 transitions. [2023-08-27 08:16:32,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058400718778078 [2023-08-27 08:16:32,782 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 563 transitions. [2023-08-27 08:16:32,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 563 transitions. [2023-08-27 08:16:32,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:16:32,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 563 transitions. [2023-08-27 08:16:32,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.42857142857143) internal successors, (563), 7 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:32,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:32,786 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:32,787 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 308 flow. Second operand 7 states and 563 transitions. [2023-08-27 08:16:32,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 100 transitions, 745 flow [2023-08-27 08:16:32,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 100 transitions, 741 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-27 08:16:32,802 INFO L231 Difference]: Finished difference. Result has 58 places, 60 transitions, 530 flow [2023-08-27 08:16:32,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=530, PETRI_PLACES=58, PETRI_TRANSITIONS=60} [2023-08-27 08:16:32,803 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2023-08-27 08:16:32,804 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 60 transitions, 530 flow [2023-08-27 08:16:32,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:32,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:16:32,804 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 08:16:32,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 08:16:33,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:16:33,010 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:16:33,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:16:33,011 INFO L85 PathProgramCache]: Analyzing trace with hash -934670115, now seen corresponding path program 1 times [2023-08-27 08:16:33,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:16:33,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536651682] [2023-08-27 08:16:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:33,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:16:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:33,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:16:33,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536651682] [2023-08-27 08:16:33,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536651682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:16:33,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7275381] [2023-08-27 08:16:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:33,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:16:33,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:16:33,211 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 08:16:33,231 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 08:16:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:33,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 08:16:33,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:16:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:33,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:16:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:33,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7275381] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 08:16:33,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 08:16:33,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 5] total 11 [2023-08-27 08:16:33,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455992062] [2023-08-27 08:16:33,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:16:33,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:16:33,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:16:33,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:16:33,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-08-27 08:16:33,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 159 [2023-08-27 08:16:33,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 60 transitions, 530 flow. Second operand has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:33,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:16:33,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 159 [2023-08-27 08:16:33,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:16:34,321 INFO L124 PetriNetUnfolderBase]: 1473/2371 cut-off events. [2023-08-27 08:16:34,321 INFO L125 PetriNetUnfolderBase]: For 10026/10026 co-relation queries the response was YES. [2023-08-27 08:16:34,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10423 conditions, 2371 events. 1473/2371 cut-off events. For 10026/10026 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11952 event pairs, 57 based on Foata normal form. 18/2389 useless extension candidates. Maximal degree in co-relation 8311. Up to 1117 conditions per place. [2023-08-27 08:16:34,342 INFO L140 encePairwiseOnDemand]: 148/159 looper letters, 154 selfloop transitions, 57 changer transitions 3/214 dead transitions. [2023-08-27 08:16:34,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 214 transitions, 1882 flow [2023-08-27 08:16:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 08:16:34,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 08:16:34,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1030 transitions. [2023-08-27 08:16:34,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4983067247218191 [2023-08-27 08:16:34,345 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1030 transitions. [2023-08-27 08:16:34,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1030 transitions. [2023-08-27 08:16:34,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:16:34,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1030 transitions. [2023-08-27 08:16:34,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.23076923076923) internal successors, (1030), 13 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:34,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 159.0) internal successors, (2226), 14 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:34,351 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 159.0) internal successors, (2226), 14 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:34,351 INFO L175 Difference]: Start difference. First operand has 58 places, 60 transitions, 530 flow. Second operand 13 states and 1030 transitions. [2023-08-27 08:16:34,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 214 transitions, 1882 flow [2023-08-27 08:16:34,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 214 transitions, 1842 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-08-27 08:16:34,381 INFO L231 Difference]: Finished difference. Result has 81 places, 106 transitions, 1252 flow [2023-08-27 08:16:34,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1252, PETRI_PLACES=81, PETRI_TRANSITIONS=106} [2023-08-27 08:16:34,382 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2023-08-27 08:16:34,382 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 106 transitions, 1252 flow [2023-08-27 08:16:34,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:34,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:16:34,382 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 08:16:34,390 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 08:16:34,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:16:34,588 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:16:34,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:16:34,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1858455883, now seen corresponding path program 2 times [2023-08-27 08:16:34,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:16:34,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429306353] [2023-08-27 08:16:34,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:34,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:16:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:34,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:34,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:16:34,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429306353] [2023-08-27 08:16:34,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429306353] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:16:34,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:16:34,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 08:16:34,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429454553] [2023-08-27 08:16:34,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:16:34,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:16:34,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:16:34,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:16:34,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:16:34,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 159 [2023-08-27 08:16:34,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 106 transitions, 1252 flow. Second operand has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:34,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:16:34,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 159 [2023-08-27 08:16:34,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:16:35,184 INFO L124 PetriNetUnfolderBase]: 1571/2493 cut-off events. [2023-08-27 08:16:35,184 INFO L125 PetriNetUnfolderBase]: For 20586/20586 co-relation queries the response was YES. [2023-08-27 08:16:35,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14034 conditions, 2493 events. 1571/2493 cut-off events. For 20586/20586 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12243 event pairs, 268 based on Foata normal form. 94/2587 useless extension candidates. Maximal degree in co-relation 13706. Up to 1863 conditions per place. [2023-08-27 08:16:35,213 INFO L140 encePairwiseOnDemand]: 153/159 looper letters, 108 selfloop transitions, 26 changer transitions 3/137 dead transitions. [2023-08-27 08:16:35,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 137 transitions, 1659 flow [2023-08-27 08:16:35,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 08:16:35,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 08:16:35,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 412 transitions. [2023-08-27 08:16:35,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182389937106918 [2023-08-27 08:16:35,215 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 412 transitions. [2023-08-27 08:16:35,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 412 transitions. [2023-08-27 08:16:35,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:16:35,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 412 transitions. [2023-08-27 08:16:35,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:35,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:35,218 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:35,218 INFO L175 Difference]: Start difference. First operand has 81 places, 106 transitions, 1252 flow. Second operand 5 states and 412 transitions. [2023-08-27 08:16:35,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 137 transitions, 1659 flow [2023-08-27 08:16:35,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 137 transitions, 1409 flow, removed 78 selfloop flow, removed 6 redundant places. [2023-08-27 08:16:35,282 INFO L231 Difference]: Finished difference. Result has 79 places, 100 transitions, 1029 flow [2023-08-27 08:16:35,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1029, PETRI_PLACES=79, PETRI_TRANSITIONS=100} [2023-08-27 08:16:35,285 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2023-08-27 08:16:35,285 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 100 transitions, 1029 flow [2023-08-27 08:16:35,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:35,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:16:35,286 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 08:16:35,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 08:16:35,286 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:16:35,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:16:35,286 INFO L85 PathProgramCache]: Analyzing trace with hash -935682643, now seen corresponding path program 1 times [2023-08-27 08:16:35,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:16:35,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605433988] [2023-08-27 08:16:35,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:35,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:16:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:35,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:35,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:16:35,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605433988] [2023-08-27 08:16:35,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605433988] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:16:35,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:16:35,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:16:35,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987865170] [2023-08-27 08:16:35,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:16:35,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:16:35,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:16:35,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:16:35,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:16:35,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 159 [2023-08-27 08:16:35,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 100 transitions, 1029 flow. Second operand has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:35,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:16:35,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 159 [2023-08-27 08:16:35,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:16:36,053 INFO L124 PetriNetUnfolderBase]: 2116/3375 cut-off events. [2023-08-27 08:16:36,054 INFO L125 PetriNetUnfolderBase]: For 24698/24698 co-relation queries the response was YES. [2023-08-27 08:16:36,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17614 conditions, 3375 events. 2116/3375 cut-off events. For 24698/24698 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 18239 event pairs, 363 based on Foata normal form. 42/3417 useless extension candidates. Maximal degree in co-relation 14491. Up to 1546 conditions per place. [2023-08-27 08:16:36,086 INFO L140 encePairwiseOnDemand]: 151/159 looper letters, 171 selfloop transitions, 69 changer transitions 12/252 dead transitions. [2023-08-27 08:16:36,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 252 transitions, 3090 flow [2023-08-27 08:16:36,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:16:36,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:16:36,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 501 transitions. [2023-08-27 08:16:36,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251572327044025 [2023-08-27 08:16:36,088 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 501 transitions. [2023-08-27 08:16:36,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 501 transitions. [2023-08-27 08:16:36,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:16:36,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 501 transitions. [2023-08-27 08:16:36,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:36,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:36,092 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:36,092 INFO L175 Difference]: Start difference. First operand has 79 places, 100 transitions, 1029 flow. Second operand 6 states and 501 transitions. [2023-08-27 08:16:36,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 252 transitions, 3090 flow [2023-08-27 08:16:36,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 252 transitions, 3018 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 08:16:36,138 INFO L231 Difference]: Finished difference. Result has 85 places, 159 transitions, 2003 flow [2023-08-27 08:16:36,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2003, PETRI_PLACES=85, PETRI_TRANSITIONS=159} [2023-08-27 08:16:36,139 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2023-08-27 08:16:36,139 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 159 transitions, 2003 flow [2023-08-27 08:16:36,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:36,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:16:36,139 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 08:16:36,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 08:16:36,139 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:16:36,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:16:36,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1043019375, now seen corresponding path program 2 times [2023-08-27 08:16:36,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:16:36,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483943596] [2023-08-27 08:16:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:36,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:16:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:36,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:36,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:16:36,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483943596] [2023-08-27 08:16:36,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483943596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:16:36,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:16:36,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:16:36,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263672309] [2023-08-27 08:16:36,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:16:36,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:16:36,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:16:36,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:16:36,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:16:36,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 159 [2023-08-27 08:16:36,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 159 transitions, 2003 flow. Second operand has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:36,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:16:36,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 159 [2023-08-27 08:16:36,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:16:36,925 INFO L124 PetriNetUnfolderBase]: 2480/4074 cut-off events. [2023-08-27 08:16:36,926 INFO L125 PetriNetUnfolderBase]: For 35287/35287 co-relation queries the response was YES. [2023-08-27 08:16:36,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23627 conditions, 4074 events. 2480/4074 cut-off events. For 35287/35287 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 23491 event pairs, 657 based on Foata normal form. 72/4146 useless extension candidates. Maximal degree in co-relation 21063. Up to 2049 conditions per place. [2023-08-27 08:16:36,964 INFO L140 encePairwiseOnDemand]: 152/159 looper letters, 142 selfloop transitions, 91 changer transitions 5/238 dead transitions. [2023-08-27 08:16:36,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 238 transitions, 3256 flow [2023-08-27 08:16:36,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 08:16:36,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 08:16:36,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2023-08-27 08:16:36,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529559748427673 [2023-08-27 08:16:36,966 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2023-08-27 08:16:36,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2023-08-27 08:16:36,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:16:36,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2023-08-27 08:16:36,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:36,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:36,969 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:36,969 INFO L175 Difference]: Start difference. First operand has 85 places, 159 transitions, 2003 flow. Second operand 5 states and 421 transitions. [2023-08-27 08:16:36,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 238 transitions, 3256 flow [2023-08-27 08:16:37,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 238 transitions, 3246 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-27 08:16:37,067 INFO L231 Difference]: Finished difference. Result has 92 places, 173 transitions, 2547 flow [2023-08-27 08:16:37,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=1993, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2547, PETRI_PLACES=92, PETRI_TRANSITIONS=173} [2023-08-27 08:16:37,068 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2023-08-27 08:16:37,068 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 173 transitions, 2547 flow [2023-08-27 08:16:37,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:37,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:16:37,069 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 08:16:37,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 08:16:37,069 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:16:37,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:16:37,069 INFO L85 PathProgramCache]: Analyzing trace with hash -408418431, now seen corresponding path program 3 times [2023-08-27 08:16:37,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:16:37,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791499070] [2023-08-27 08:16:37,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:37,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:16:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:37,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:16:37,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791499070] [2023-08-27 08:16:37,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791499070] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:16:37,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246259908] [2023-08-27 08:16:37,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 08:16:37,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:16:37,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:16:37,317 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 08:16:37,336 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 08:16:37,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 08:16:37,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:16:37,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 08:16:37,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:16:37,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:37,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:16:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:37,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246259908] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:16:37,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:16:37,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 11 [2023-08-27 08:16:37,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940519799] [2023-08-27 08:16:37,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:16:37,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 08:16:37,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:16:37,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 08:16:37,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-27 08:16:37,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 159 [2023-08-27 08:16:37,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 173 transitions, 2547 flow. Second operand has 11 states, 11 states have (on average 69.45454545454545) internal successors, (764), 11 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:37,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:16:37,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 159 [2023-08-27 08:16:37,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:16:40,059 INFO L124 PetriNetUnfolderBase]: 4529/7336 cut-off events. [2023-08-27 08:16:40,059 INFO L125 PetriNetUnfolderBase]: For 81578/81578 co-relation queries the response was YES. [2023-08-27 08:16:40,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47161 conditions, 7336 events. 4529/7336 cut-off events. For 81578/81578 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 46181 event pairs, 301 based on Foata normal form. 145/7481 useless extension candidates. Maximal degree in co-relation 41548. Up to 2140 conditions per place. [2023-08-27 08:16:40,143 INFO L140 encePairwiseOnDemand]: 148/159 looper letters, 335 selfloop transitions, 278 changer transitions 49/662 dead transitions. [2023-08-27 08:16:40,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 662 transitions, 8890 flow [2023-08-27 08:16:40,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-27 08:16:40,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-27 08:16:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2019 transitions. [2023-08-27 08:16:40,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.488388969521045 [2023-08-27 08:16:40,150 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2019 transitions. [2023-08-27 08:16:40,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2019 transitions. [2023-08-27 08:16:40,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:16:40,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2019 transitions. [2023-08-27 08:16:40,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 77.65384615384616) internal successors, (2019), 26 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:40,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 159.0) internal successors, (4293), 27 states have internal predecessors, (4293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:40,164 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 159.0) internal successors, (4293), 27 states have internal predecessors, (4293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:40,164 INFO L175 Difference]: Start difference. First operand has 92 places, 173 transitions, 2547 flow. Second operand 26 states and 2019 transitions. [2023-08-27 08:16:40,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 662 transitions, 8890 flow [2023-08-27 08:16:40,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 662 transitions, 8602 flow, removed 67 selfloop flow, removed 2 redundant places. [2023-08-27 08:16:40,381 INFO L231 Difference]: Finished difference. Result has 134 places, 372 transitions, 6623 flow [2023-08-27 08:16:40,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6623, PETRI_PLACES=134, PETRI_TRANSITIONS=372} [2023-08-27 08:16:40,382 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2023-08-27 08:16:40,382 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 372 transitions, 6623 flow [2023-08-27 08:16:40,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.45454545454545) internal successors, (764), 11 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:40,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:16:40,382 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 08:16:40,389 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 08:16:40,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:16:40,588 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:16:40,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:16:40,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1832060313, now seen corresponding path program 4 times [2023-08-27 08:16:40,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:16:40,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745019143] [2023-08-27 08:16:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:40,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:16:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:40,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:16:40,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745019143] [2023-08-27 08:16:40,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745019143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:16:40,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:16:40,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:16:40,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516218953] [2023-08-27 08:16:40,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:16:40,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:16:40,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:16:40,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:16:40,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:16:40,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 159 [2023-08-27 08:16:40,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 372 transitions, 6623 flow. Second operand has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:40,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:16:40,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 159 [2023-08-27 08:16:40,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:16:42,130 INFO L124 PetriNetUnfolderBase]: 4259/6844 cut-off events. [2023-08-27 08:16:42,130 INFO L125 PetriNetUnfolderBase]: For 116032/116032 co-relation queries the response was YES. [2023-08-27 08:16:42,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51158 conditions, 6844 events. 4259/6844 cut-off events. For 116032/116032 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 42101 event pairs, 1196 based on Foata normal form. 76/6920 useless extension candidates. Maximal degree in co-relation 50197. Up to 4030 conditions per place. [2023-08-27 08:16:42,203 INFO L140 encePairwiseOnDemand]: 152/159 looper letters, 241 selfloop transitions, 170 changer transitions 7/418 dead transitions. [2023-08-27 08:16:42,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 418 transitions, 7793 flow [2023-08-27 08:16:42,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 08:16:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 08:16:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 425 transitions. [2023-08-27 08:16:42,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345911949685535 [2023-08-27 08:16:42,205 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 425 transitions. [2023-08-27 08:16:42,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 425 transitions. [2023-08-27 08:16:42,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:16:42,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 425 transitions. [2023-08-27 08:16:42,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:42,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:42,208 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:42,208 INFO L175 Difference]: Start difference. First operand has 134 places, 372 transitions, 6623 flow. Second operand 5 states and 425 transitions. [2023-08-27 08:16:42,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 418 transitions, 7793 flow [2023-08-27 08:16:42,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 418 transitions, 7161 flow, removed 309 selfloop flow, removed 2 redundant places. [2023-08-27 08:16:42,629 INFO L231 Difference]: Finished difference. Result has 137 places, 360 transitions, 6199 flow [2023-08-27 08:16:42,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=5840, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6199, PETRI_PLACES=137, PETRI_TRANSITIONS=360} [2023-08-27 08:16:42,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2023-08-27 08:16:42,631 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 360 transitions, 6199 flow [2023-08-27 08:16:42,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:42,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:16:42,631 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 08:16:42,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 08:16:42,632 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:16:42,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:16:42,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1456693785, now seen corresponding path program 5 times [2023-08-27 08:16:42,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:16:42,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727370612] [2023-08-27 08:16:42,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:42,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:16:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:42,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:42,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:16:42,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727370612] [2023-08-27 08:16:42,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727370612] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:16:42,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:16:42,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 08:16:42,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054779026] [2023-08-27 08:16:42,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:16:42,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:16:42,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:16:42,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:16:42,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:16:42,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 159 [2023-08-27 08:16:42,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 360 transitions, 6199 flow. Second operand has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:42,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:16:42,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 159 [2023-08-27 08:16:42,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:16:44,062 INFO L124 PetriNetUnfolderBase]: 4355/7033 cut-off events. [2023-08-27 08:16:44,062 INFO L125 PetriNetUnfolderBase]: For 112454/112454 co-relation queries the response was YES. [2023-08-27 08:16:44,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52470 conditions, 7033 events. 4355/7033 cut-off events. For 112454/112454 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 43458 event pairs, 779 based on Foata normal form. 4/7037 useless extension candidates. Maximal degree in co-relation 51574. Up to 6606 conditions per place. [2023-08-27 08:16:44,124 INFO L140 encePairwiseOnDemand]: 152/159 looper letters, 402 selfloop transitions, 23 changer transitions 8/433 dead transitions. [2023-08-27 08:16:44,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 433 transitions, 7974 flow [2023-08-27 08:16:44,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:16:44,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:16:44,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 480 transitions. [2023-08-27 08:16:44,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031446540880503 [2023-08-27 08:16:44,126 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 480 transitions. [2023-08-27 08:16:44,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 480 transitions. [2023-08-27 08:16:44,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:16:44,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 480 transitions. [2023-08-27 08:16:44,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:44,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:44,129 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:44,129 INFO L175 Difference]: Start difference. First operand has 137 places, 360 transitions, 6199 flow. Second operand 6 states and 480 transitions. [2023-08-27 08:16:44,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 433 transitions, 7974 flow [2023-08-27 08:16:44,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 433 transitions, 7597 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-27 08:16:44,566 INFO L231 Difference]: Finished difference. Result has 141 places, 367 transitions, 6051 flow [2023-08-27 08:16:44,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=5871, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6051, PETRI_PLACES=141, PETRI_TRANSITIONS=367} [2023-08-27 08:16:44,567 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2023-08-27 08:16:44,567 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 367 transitions, 6051 flow [2023-08-27 08:16:44,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:44,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:16:44,567 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 08:16:44,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 08:16:44,568 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:16:44,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:16:44,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1121196403, now seen corresponding path program 6 times [2023-08-27 08:16:44,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:16:44,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575060885] [2023-08-27 08:16:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:44,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:16:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:44,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:44,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:16:44,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575060885] [2023-08-27 08:16:44,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575060885] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:16:44,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:16:44,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 08:16:44,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394735708] [2023-08-27 08:16:44,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:16:44,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:16:44,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:16:44,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:16:44,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:16:44,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 159 [2023-08-27 08:16:44,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 367 transitions, 6051 flow. Second operand has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:44,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:16:44,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 159 [2023-08-27 08:16:44,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:16:45,965 INFO L124 PetriNetUnfolderBase]: 4191/6643 cut-off events. [2023-08-27 08:16:45,965 INFO L125 PetriNetUnfolderBase]: For 102699/102699 co-relation queries the response was YES. [2023-08-27 08:16:45,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49657 conditions, 6643 events. 4191/6643 cut-off events. For 102699/102699 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 39436 event pairs, 755 based on Foata normal form. 4/6647 useless extension candidates. Maximal degree in co-relation 48889. Up to 6562 conditions per place. [2023-08-27 08:16:46,024 INFO L140 encePairwiseOnDemand]: 153/159 looper letters, 345 selfloop transitions, 17 changer transitions 7/369 dead transitions. [2023-08-27 08:16:46,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 369 transitions, 6708 flow [2023-08-27 08:16:46,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 08:16:46,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 08:16:46,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 386 transitions. [2023-08-27 08:16:46,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48553459119496856 [2023-08-27 08:16:46,026 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 386 transitions. [2023-08-27 08:16:46,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 386 transitions. [2023-08-27 08:16:46,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:16:46,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 386 transitions. [2023-08-27 08:16:46,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:46,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:46,030 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:46,030 INFO L175 Difference]: Start difference. First operand has 141 places, 367 transitions, 6051 flow. Second operand 5 states and 386 transitions. [2023-08-27 08:16:46,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 369 transitions, 6708 flow [2023-08-27 08:16:46,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 369 transitions, 6361 flow, removed 150 selfloop flow, removed 5 redundant places. [2023-08-27 08:16:46,409 INFO L231 Difference]: Finished difference. Result has 141 places, 357 transitions, 5589 flow [2023-08-27 08:16:46,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=5577, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5589, PETRI_PLACES=141, PETRI_TRANSITIONS=357} [2023-08-27 08:16:46,410 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2023-08-27 08:16:46,410 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 357 transitions, 5589 flow [2023-08-27 08:16:46,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:46,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:16:46,410 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 08:16:46,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 08:16:46,411 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:16:46,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:16:46,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1748652507, now seen corresponding path program 1 times [2023-08-27 08:16:46,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:16:46,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423947010] [2023-08-27 08:16:46,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:46,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:16:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:46,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:46,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:16:46,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423947010] [2023-08-27 08:16:46,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423947010] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:16:46,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370574085] [2023-08-27 08:16:46,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:46,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:16:46,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:16:46,783 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 08:16:46,786 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 08:16:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:46,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-27 08:16:46,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:16:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:47,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:16:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:47,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370574085] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:16:47,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:16:47,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2023-08-27 08:16:47,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924972427] [2023-08-27 08:16:47,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:16:47,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 08:16:47,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:16:47,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 08:16:47,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-27 08:16:47,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 159 [2023-08-27 08:16:47,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 357 transitions, 5589 flow. Second operand has 12 states, 12 states have (on average 69.25) internal successors, (831), 12 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:47,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:16:47,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 159 [2023-08-27 08:16:47,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:16:48,860 INFO L124 PetriNetUnfolderBase]: 5117/8297 cut-off events. [2023-08-27 08:16:48,861 INFO L125 PetriNetUnfolderBase]: For 117145/117145 co-relation queries the response was YES. [2023-08-27 08:16:48,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59935 conditions, 8297 events. 5117/8297 cut-off events. For 117145/117145 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 53187 event pairs, 314 based on Foata normal form. 10/8307 useless extension candidates. Maximal degree in co-relation 59041. Up to 4925 conditions per place. [2023-08-27 08:16:48,925 INFO L140 encePairwiseOnDemand]: 152/159 looper letters, 403 selfloop transitions, 203 changer transitions 6/612 dead transitions. [2023-08-27 08:16:48,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 612 transitions, 10613 flow [2023-08-27 08:16:48,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 08:16:48,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 08:16:48,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 691 transitions. [2023-08-27 08:16:48,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48287910552061497 [2023-08-27 08:16:48,934 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 691 transitions. [2023-08-27 08:16:48,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 691 transitions. [2023-08-27 08:16:48,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:16:48,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 691 transitions. [2023-08-27 08:16:48,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.77777777777777) internal successors, (691), 9 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:48,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:48,939 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:48,939 INFO L175 Difference]: Start difference. First operand has 141 places, 357 transitions, 5589 flow. Second operand 9 states and 691 transitions. [2023-08-27 08:16:48,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 612 transitions, 10613 flow [2023-08-27 08:16:49,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 612 transitions, 10392 flow, removed 86 selfloop flow, removed 5 redundant places. [2023-08-27 08:16:49,390 INFO L231 Difference]: Finished difference. Result has 145 places, 460 transitions, 8209 flow [2023-08-27 08:16:49,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=5440, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8209, PETRI_PLACES=145, PETRI_TRANSITIONS=460} [2023-08-27 08:16:49,391 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2023-08-27 08:16:49,391 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 460 transitions, 8209 flow [2023-08-27 08:16:49,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.25) internal successors, (831), 12 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:49,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:16:49,392 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 08:16:49,397 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 08:16:49,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:16:49,597 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:16:49,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:16:49,598 INFO L85 PathProgramCache]: Analyzing trace with hash -150896881, now seen corresponding path program 2 times [2023-08-27 08:16:49,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:16:49,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345219818] [2023-08-27 08:16:49,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:49,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:16:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:49,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:16:49,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345219818] [2023-08-27 08:16:49,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345219818] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:16:49,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920534895] [2023-08-27 08:16:49,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 08:16:49,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:16:49,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:16:49,920 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 08:16:49,923 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 08:16:49,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 08:16:49,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:16:49,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-27 08:16:49,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:16:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:50,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:16:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:50,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920534895] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:16:50,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:16:50,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2023-08-27 08:16:50,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740807096] [2023-08-27 08:16:50,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:16:50,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 08:16:50,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:16:50,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 08:16:50,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-27 08:16:50,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 159 [2023-08-27 08:16:50,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 460 transitions, 8209 flow. Second operand has 12 states, 12 states have (on average 69.25) internal successors, (831), 12 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:50,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:16:50,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 159 [2023-08-27 08:16:50,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:16:52,930 INFO L124 PetriNetUnfolderBase]: 5703/9231 cut-off events. [2023-08-27 08:16:52,930 INFO L125 PetriNetUnfolderBase]: For 151578/151578 co-relation queries the response was YES. [2023-08-27 08:16:52,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69740 conditions, 9231 events. 5703/9231 cut-off events. For 151578/151578 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 60349 event pairs, 456 based on Foata normal form. 10/9241 useless extension candidates. Maximal degree in co-relation 68761. Up to 6725 conditions per place. [2023-08-27 08:16:53,009 INFO L140 encePairwiseOnDemand]: 152/159 looper letters, 428 selfloop transitions, 210 changer transitions 7/645 dead transitions. [2023-08-27 08:16:53,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 645 transitions, 12374 flow [2023-08-27 08:16:53,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 08:16:53,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 08:16:53,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 814 transitions. [2023-08-27 08:16:53,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46540880503144655 [2023-08-27 08:16:53,012 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 814 transitions. [2023-08-27 08:16:53,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 814 transitions. [2023-08-27 08:16:53,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:16:53,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 814 transitions. [2023-08-27 08:16:53,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:53,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 159.0) internal successors, (1908), 12 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:53,017 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 159.0) internal successors, (1908), 12 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:53,017 INFO L175 Difference]: Start difference. First operand has 145 places, 460 transitions, 8209 flow. Second operand 11 states and 814 transitions. [2023-08-27 08:16:53,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 645 transitions, 12374 flow [2023-08-27 08:16:53,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 645 transitions, 11853 flow, removed 249 selfloop flow, removed 2 redundant places. [2023-08-27 08:16:53,777 INFO L231 Difference]: Finished difference. Result has 158 places, 544 transitions, 10075 flow [2023-08-27 08:16:53,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=7780, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10075, PETRI_PLACES=158, PETRI_TRANSITIONS=544} [2023-08-27 08:16:53,778 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2023-08-27 08:16:53,778 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 544 transitions, 10075 flow [2023-08-27 08:16:53,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.25) internal successors, (831), 12 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:53,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:16:53,779 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 08:16:53,788 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 08:16:53,984 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,SelfDestructingSolverStorable13 [2023-08-27 08:16:53,985 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:16:53,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:16:53,985 INFO L85 PathProgramCache]: Analyzing trace with hash -527243925, now seen corresponding path program 1 times [2023-08-27 08:16:53,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:16:53,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067054953] [2023-08-27 08:16:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:53,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:16:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:54,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:16:54,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067054953] [2023-08-27 08:16:54,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067054953] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:16:54,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178631531] [2023-08-27 08:16:54,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:16:54,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:16:54,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:16:54,236 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 08:16:54,238 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 08:16:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:16:54,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 08:16:54,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:16:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:54,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:16:54,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:16:54,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178631531] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:16:54,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:16:54,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 19 [2023-08-27 08:16:54,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552573502] [2023-08-27 08:16:54,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:16:54,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 08:16:54,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:16:54,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 08:16:54,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2023-08-27 08:16:54,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 159 [2023-08-27 08:16:54,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 544 transitions, 10075 flow. Second operand has 20 states, 20 states have (on average 69.5) internal successors, (1390), 20 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:16:54,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:16:54,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 159 [2023-08-27 08:16:54,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:17:04,333 INFO L124 PetriNetUnfolderBase]: 17548/27650 cut-off events. [2023-08-27 08:17:04,333 INFO L125 PetriNetUnfolderBase]: For 600758/600758 co-relation queries the response was YES. [2023-08-27 08:17:04,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218752 conditions, 27650 events. 17548/27650 cut-off events. For 600758/600758 co-relation queries the response was YES. Maximal size of possible extension queue 1270. Compared 201137 event pairs, 477 based on Foata normal form. 1776/29426 useless extension candidates. Maximal degree in co-relation 217070. Up to 6891 conditions per place. [2023-08-27 08:17:04,680 INFO L140 encePairwiseOnDemand]: 148/159 looper letters, 879 selfloop transitions, 1892 changer transitions 0/2771 dead transitions. [2023-08-27 08:17:04,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 2771 transitions, 51757 flow [2023-08-27 08:17:04,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-08-27 08:17:04,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2023-08-27 08:17:04,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 5485 transitions. [2023-08-27 08:17:04,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858712020550979 [2023-08-27 08:17:04,690 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 5485 transitions. [2023-08-27 08:17:04,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 5485 transitions. [2023-08-27 08:17:04,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:17:04,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 5485 transitions. [2023-08-27 08:17:04,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 77.25352112676056) internal successors, (5485), 71 states have internal predecessors, (5485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:17:04,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 159.0) internal successors, (11448), 72 states have internal predecessors, (11448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:17:04,723 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 159.0) internal successors, (11448), 72 states have internal predecessors, (11448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:17:04,723 INFO L175 Difference]: Start difference. First operand has 158 places, 544 transitions, 10075 flow. Second operand 71 states and 5485 transitions. [2023-08-27 08:17:04,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 2771 transitions, 51757 flow [2023-08-27 08:17:07,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 2771 transitions, 50788 flow, removed 473 selfloop flow, removed 10 redundant places. [2023-08-27 08:17:07,865 INFO L231 Difference]: Finished difference. Result has 254 places, 2184 transitions, 46923 flow [2023-08-27 08:17:07,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=8556, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=407, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=46923, PETRI_PLACES=254, PETRI_TRANSITIONS=2184} [2023-08-27 08:17:07,866 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2023-08-27 08:17:07,867 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 2184 transitions, 46923 flow [2023-08-27 08:17:07,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 69.5) internal successors, (1390), 20 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:17:07,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:17:07,868 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 08:17:07,873 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 08:17:08,073 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,SelfDestructingSolverStorable14 [2023-08-27 08:17:08,073 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:17:08,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:17:08,074 INFO L85 PathProgramCache]: Analyzing trace with hash -651011781, now seen corresponding path program 2 times [2023-08-27 08:17:08,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:17:08,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955555473] [2023-08-27 08:17:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:17:08,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:17:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:17:08,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:17:08,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:17:08,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955555473] [2023-08-27 08:17:08,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955555473] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:17:08,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201005733] [2023-08-27 08:17:08,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 08:17:08,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:17:08,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:17:08,281 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 08:17:08,285 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 08:17:08,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 08:17:08,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:17:08,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 08:17:08,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:17:08,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:17:08,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:17:08,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:17:08,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201005733] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:17:08,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:17:08,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8] total 14 [2023-08-27 08:17:08,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604529124] [2023-08-27 08:17:08,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:17:08,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 08:17:08,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:17:08,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 08:17:08,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-27 08:17:08,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 159 [2023-08-27 08:17:08,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 2184 transitions, 46923 flow. Second operand has 15 states, 15 states have (on average 69.6) internal successors, (1044), 15 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:17:08,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:17:08,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 159 [2023-08-27 08:17:08,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:17:26,654 INFO L124 PetriNetUnfolderBase]: 20338/32203 cut-off events. [2023-08-27 08:17:26,654 INFO L125 PetriNetUnfolderBase]: For 829162/829162 co-relation queries the response was YES. [2023-08-27 08:17:27,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296380 conditions, 32203 events. 20338/32203 cut-off events. For 829162/829162 co-relation queries the response was YES. Maximal size of possible extension queue 1555. Compared 241916 event pairs, 357 based on Foata normal form. 172/32375 useless extension candidates. Maximal degree in co-relation 293206. Up to 7803 conditions per place. [2023-08-27 08:17:27,251 INFO L140 encePairwiseOnDemand]: 148/159 looper letters, 1249 selfloop transitions, 2436 changer transitions 1/3686 dead transitions. [2023-08-27 08:17:27,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 3686 transitions, 82649 flow [2023-08-27 08:17:27,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-08-27 08:17:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-08-27 08:17:27,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 4060 transitions. [2023-08-27 08:17:27,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48178473952770856 [2023-08-27 08:17:27,263 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 4060 transitions. [2023-08-27 08:17:27,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 4060 transitions. [2023-08-27 08:17:27,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:17:27,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 4060 transitions. [2023-08-27 08:17:27,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 76.60377358490567) internal successors, (4060), 53 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:17:27,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 159.0) internal successors, (8586), 54 states have internal predecessors, (8586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:17:27,287 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 159.0) internal successors, (8586), 54 states have internal predecessors, (8586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:17:27,287 INFO L175 Difference]: Start difference. First operand has 254 places, 2184 transitions, 46923 flow. Second operand 53 states and 4060 transitions. [2023-08-27 08:17:27,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 3686 transitions, 82649 flow [2023-08-27 08:17:49,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 3686 transitions, 70186 flow, removed 5893 selfloop flow, removed 3 redundant places. [2023-08-27 08:17:49,198 INFO L231 Difference]: Finished difference. Result has 343 places, 3190 transitions, 67618 flow [2023-08-27 08:17:49,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=38677, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1516, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=67618, PETRI_PLACES=343, PETRI_TRANSITIONS=3190} [2023-08-27 08:17:49,201 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2023-08-27 08:17:49,201 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 3190 transitions, 67618 flow [2023-08-27 08:17:49,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 69.6) internal successors, (1044), 15 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:17:49,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:17:49,201 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 08:17:49,210 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 08:17:49,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:17:49,410 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:17:49,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:17:49,410 INFO L85 PathProgramCache]: Analyzing trace with hash 353808511, now seen corresponding path program 3 times [2023-08-27 08:17:49,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:17:49,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727845014] [2023-08-27 08:17:49,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:17:49,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:17:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:17:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:17:49,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:17:49,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727845014] [2023-08-27 08:17:49,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727845014] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:17:49,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935552695] [2023-08-27 08:17:49,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 08:17:49,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:17:49,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:17:49,614 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 08:17:49,625 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 08:17:49,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 08:17:49,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:17:49,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 08:17:49,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:17:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:17:49,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:17:50,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:17:50,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935552695] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:17:50,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:17:50,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-08-27 08:17:50,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455606438] [2023-08-27 08:17:50,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:17:50,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 08:17:50,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:17:50,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 08:17:50,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-08-27 08:17:50,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 159 [2023-08-27 08:17:50,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 3190 transitions, 67618 flow. Second operand has 20 states, 20 states have (on average 69.35) internal successors, (1387), 20 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:17:50,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:17:50,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 159 [2023-08-27 08:17:50,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:18:34,436 INFO L124 PetriNetUnfolderBase]: 30393/48708 cut-off events. [2023-08-27 08:18:34,436 INFO L125 PetriNetUnfolderBase]: For 1394454/1394454 co-relation queries the response was YES. [2023-08-27 08:18:35,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454463 conditions, 48708 events. 30393/48708 cut-off events. For 1394454/1394454 co-relation queries the response was YES. Maximal size of possible extension queue 2329. Compared 393795 event pairs, 521 based on Foata normal form. 912/49620 useless extension candidates. Maximal degree in co-relation 452875. Up to 10074 conditions per place. [2023-08-27 08:18:35,791 INFO L140 encePairwiseOnDemand]: 147/159 looper letters, 1701 selfloop transitions, 4230 changer transitions 0/5931 dead transitions. [2023-08-27 08:18:35,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 5931 transitions, 137311 flow [2023-08-27 08:18:35,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-08-27 08:18:35,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-08-27 08:18:35,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 5431 transitions. [2023-08-27 08:18:35,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879604672057502 [2023-08-27 08:18:35,797 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 5431 transitions. [2023-08-27 08:18:35,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 5431 transitions. [2023-08-27 08:18:35,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:18:35,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 5431 transitions. [2023-08-27 08:18:35,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 77.58571428571429) internal successors, (5431), 70 states have internal predecessors, (5431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:18:35,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 159.0) internal successors, (11289), 71 states have internal predecessors, (11289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:18:35,820 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 159.0) internal successors, (11289), 71 states have internal predecessors, (11289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:18:35,820 INFO L175 Difference]: Start difference. First operand has 343 places, 3190 transitions, 67618 flow. Second operand 70 states and 5431 transitions. [2023-08-27 08:18:35,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 5931 transitions, 137311 flow [2023-08-27 08:19:33,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 5931 transitions, 131712 flow, removed 2303 selfloop flow, removed 3 redundant places. [2023-08-27 08:19:33,776 INFO L231 Difference]: Finished difference. Result has 461 places, 5281 transitions, 128085 flow [2023-08-27 08:19:33,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=63557, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=128085, PETRI_PLACES=461, PETRI_TRANSITIONS=5281} [2023-08-27 08:19:33,779 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 431 predicate places. [2023-08-27 08:19:33,779 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 5281 transitions, 128085 flow [2023-08-27 08:19:33,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 69.35) internal successors, (1387), 20 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:19:33,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:19:33,780 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 08:19:33,792 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 08:19:33,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 08:19:33,986 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:19:33,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:19:33,986 INFO L85 PathProgramCache]: Analyzing trace with hash 165961575, now seen corresponding path program 4 times [2023-08-27 08:19:33,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:19:33,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904444713] [2023-08-27 08:19:33,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:19:33,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:19:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:19:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:19:34,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:19:34,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904444713] [2023-08-27 08:19:34,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904444713] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:19:34,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355817990] [2023-08-27 08:19:34,112 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 08:19:34,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:19:34,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:19:34,113 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 08:19:34,117 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 08:19:34,196 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 08:19:34,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:19:34,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-27 08:19:34,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:19:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:19:34,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:19:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:19:34,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355817990] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:19:34,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:19:34,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 9] total 16 [2023-08-27 08:19:34,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920004133] [2023-08-27 08:19:34,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:19:34,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 08:19:34,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:19:34,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 08:19:34,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-08-27 08:19:34,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 159 [2023-08-27 08:19:34,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 5281 transitions, 128085 flow. Second operand has 17 states, 17 states have (on average 69.47058823529412) internal successors, (1181), 17 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:19:34,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:19:34,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 159 [2023-08-27 08:19:34,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:21:07,131 INFO L124 PetriNetUnfolderBase]: 44452/71994 cut-off events. [2023-08-27 08:21:07,131 INFO L125 PetriNetUnfolderBase]: For 2657556/2657556 co-relation queries the response was YES. [2023-08-27 08:21:09,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769628 conditions, 71994 events. 44452/71994 cut-off events. For 2657556/2657556 co-relation queries the response was YES. Maximal size of possible extension queue 3711. Compared 627908 event pairs, 529 based on Foata normal form. 510/72504 useless extension candidates. Maximal degree in co-relation 768203. Up to 13757 conditions per place. [2023-08-27 08:21:09,733 INFO L140 encePairwiseOnDemand]: 147/159 looper letters, 2869 selfloop transitions, 6314 changer transitions 6/9189 dead transitions. [2023-08-27 08:21:09,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 9189 transitions, 244611 flow [2023-08-27 08:21:09,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-08-27 08:21:09,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2023-08-27 08:21:09,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 5590 transitions. [2023-08-27 08:21:09,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4816059274575687 [2023-08-27 08:21:09,742 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 5590 transitions. [2023-08-27 08:21:09,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 5590 transitions. [2023-08-27 08:21:09,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:21:09,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 5590 transitions. [2023-08-27 08:21:09,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 76.57534246575342) internal successors, (5590), 73 states have internal predecessors, (5590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:21:09,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 159.0) internal successors, (11766), 74 states have internal predecessors, (11766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:21:09,763 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 159.0) internal successors, (11766), 74 states have internal predecessors, (11766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:21:09,764 INFO L175 Difference]: Start difference. First operand has 461 places, 5281 transitions, 128085 flow. Second operand 73 states and 5590 transitions. [2023-08-27 08:21:09,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 9189 transitions, 244611 flow [2023-08-27 08:24:46,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 9189 transitions, 233592 flow, removed 5485 selfloop flow, removed 4 redundant places. [2023-08-27 08:24:46,468 INFO L231 Difference]: Finished difference. Result has 581 places, 8125 transitions, 217352 flow [2023-08-27 08:24:46,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=121925, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3673, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=217352, PETRI_PLACES=581, PETRI_TRANSITIONS=8125} [2023-08-27 08:24:46,473 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 551 predicate places. [2023-08-27 08:24:46,473 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 8125 transitions, 217352 flow [2023-08-27 08:24:46,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 69.47058823529412) internal successors, (1181), 17 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:24:46,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:24:46,473 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 08:24:46,483 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 08:24:46,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 08:24:46,680 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 08:24:46,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:24:46,680 INFO L85 PathProgramCache]: Analyzing trace with hash 981867539, now seen corresponding path program 5 times [2023-08-27 08:24:46,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:24:46,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325011544] [2023-08-27 08:24:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:24:46,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:24:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:24:46,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:24:46,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:24:46,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325011544] [2023-08-27 08:24:46,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325011544] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:24:46,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020270565] [2023-08-27 08:24:46,840 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 08:24:46,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:24:46,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:24:46,841 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 08:24:46,845 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 08:24:46,920 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 08:24:46,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:24:46,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-27 08:24:46,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:24:47,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:24:47,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:24:47,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:24:47,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020270565] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:24:47,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:24:47,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-08-27 08:24:47,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014029544] [2023-08-27 08:24:47,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:24:47,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 08:24:47,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:24:47,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 08:24:47,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2023-08-27 08:24:47,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 159 [2023-08-27 08:24:47,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 8125 transitions, 217352 flow. Second operand has 20 states, 20 states have (on average 69.45) internal successors, (1389), 20 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:24:47,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:24:47,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 159 [2023-08-27 08:24:47,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-27 08:29:30,000 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 08:29:30,000 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 08:29:31,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 08:29:31,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-27 08:29:34,141 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2023-08-27 08:29:34,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 08:29:34,142 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-27 08:29:34,143 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-27 08:29:34,143 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-27 08:29:34,143 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-27 08:29:34,144 INFO L445 BasicCegarLoop]: Path program histogram: [6, 5, 3, 2, 2, 1] [2023-08-27 08:29:34,146 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 08:29:34,146 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 08:29:34,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 08:29:34 BasicIcfg [2023-08-27 08:29:34,149 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 08:29:34,149 INFO L158 Benchmark]: Toolchain (without parser) took 787591.55ms. Allocated memory was 369.1MB in the beginning and 8.7GB in the end (delta: 8.3GB). Free memory was 345.5MB in the beginning and 3.7GB in the end (delta: -3.4GB). Peak memory consumption was 5.3GB. Max. memory is 16.0GB. [2023-08-27 08:29:34,149 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 369.1MB. Free memory is still 345.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 08:29:34,149 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.37ms. Allocated memory is still 369.1MB. Free memory was 345.5MB in the beginning and 334.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 08:29:34,150 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.83ms. Allocated memory is still 369.1MB. Free memory was 334.4MB in the beginning and 332.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 08:29:34,150 INFO L158 Benchmark]: Boogie Preprocessor took 42.44ms. Allocated memory is still 369.1MB. Free memory was 332.7MB in the beginning and 331.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 08:29:34,150 INFO L158 Benchmark]: RCFGBuilder took 499.95ms. Allocated memory is still 369.1MB. Free memory was 331.2MB in the beginning and 314.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 08:29:34,150 INFO L158 Benchmark]: TraceAbstraction took 786724.88ms. Allocated memory was 369.1MB in the beginning and 8.7GB in the end (delta: 8.3GB). Free memory was 314.0MB in the beginning and 3.7GB in the end (delta: -3.4GB). Peak memory consumption was 5.3GB. Max. memory is 16.0GB. [2023-08-27 08:29:34,151 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 369.1MB. Free memory is still 345.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 273.37ms. Allocated memory is still 369.1MB. Free memory was 345.5MB in the beginning and 334.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.83ms. Allocated memory is still 369.1MB. Free memory was 334.4MB in the beginning and 332.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 42.44ms. Allocated memory is still 369.1MB. Free memory was 332.7MB in the beginning and 331.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 499.95ms. Allocated memory is still 369.1MB. Free memory was 331.2MB in the beginning and 314.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 786724.88ms. Allocated memory was 369.1MB in the beginning and 8.7GB in the end (delta: 8.3GB). Free memory was 314.0MB in the beginning and 3.7GB in the end (delta: -3.4GB). Peak memory consumption was 5.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 84 PlacesBefore, 30 PlacesAfterwards, 81 TransitionsBefore, 23 TransitionsAfterwards, 860 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 64 TotalNumberOfCompositions, 1272 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1089, independent: 1063, independent conditional: 0, independent unconditional: 1063, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 440, independent: 435, independent conditional: 0, independent unconditional: 435, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1089, independent: 628, independent conditional: 0, independent unconditional: 628, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 440, unknown conditional: 0, unknown unconditional: 440] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 111 locations, 4 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: 786.6s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 772.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2986 SdHoareTripleChecker+Valid, 10.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2986 mSDsluCounter, 88 SdHoareTripleChecker+Invalid, 8.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 492 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12138 IncrementalHoareTripleChecker+Invalid, 12630 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 492 mSolverCounterUnsat, 46 mSDtfsCounter, 12138 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 807 GetRequests, 324 SyntacticMatches, 8 SemanticMatches, 475 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9426 ImplicationChecksByTransitivity, 11.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=217352occurred in iteration=18, InterpolantAutomatonStates: 382, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 588 NumberOfCodeBlocks, 588 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 755 ConstructedInterpolants, 0 QuantifiedInterpolants, 8017 SizeOfPredicates, 44 NumberOfNonLiveVariables, 1616 ConjunctsInSsa, 140 ConjunctsInUnsatCore, 39 InterpolantComputations, 11 PerfectInterpolantSequences, 14/59 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