/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stack-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:01:01,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:01:01,173 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-SemanticLbe.epf [2023-11-17 15:01:01,199 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:01:01,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:01:01,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:01:01,201 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:01:01,201 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:01:01,201 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:01:01,202 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:01:01,202 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:01:01,202 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:01:01,202 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:01:01,203 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:01:01,203 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:01:01,203 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:01:01,204 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:01:01,204 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:01:01,204 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:01:01,205 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:01:01,205 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:01:01,205 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:01:01,206 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:01:01,206 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:01:01,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:01:01,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:01:01,207 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:01:01,207 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:01:01,208 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:01:01,208 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:01:01,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:01:01,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:01:01,209 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:01:01,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:01:01,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:01:01,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:01:01,443 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:01:01,445 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:01:01,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2023-11-17 15:01:02,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:01:02,967 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:01:02,969 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2023-11-17 15:01:02,987 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ebc710d/cc072680c05e4779b0db11266901ea5a/FLAG960ee7af5 [2023-11-17 15:01:03,003 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ebc710d/cc072680c05e4779b0db11266901ea5a [2023-11-17 15:01:03,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:01:03,008 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:01:03,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:01:03,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:01:03,013 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:01:03,014 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:01:03" (1/1) ... [2023-11-17 15:01:03,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc7e9a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:03, skipping insertion in model container [2023-11-17 15:01:03,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:01:03" (1/1) ... [2023-11-17 15:01:03,061 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:01:03,446 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i[41520,41533] [2023-11-17 15:01:03,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:01:03,499 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:01:03,553 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i[41520,41533] [2023-11-17 15:01:03,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:01:03,644 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:01:03,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:03 WrapperNode [2023-11-17 15:01:03,646 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:01:03,648 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:01:03,648 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:01:03,648 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:01:03,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:03" (1/1) ... [2023-11-17 15:01:03,685 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:03" (1/1) ... [2023-11-17 15:01:03,717 INFO L138 Inliner]: procedures = 278, calls = 45, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 158 [2023-11-17 15:01:03,718 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:01:03,719 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:01:03,719 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:01:03,719 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:01:03,727 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:03" (1/1) ... [2023-11-17 15:01:03,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:03" (1/1) ... [2023-11-17 15:01:03,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:03" (1/1) ... [2023-11-17 15:01:03,747 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:03" (1/1) ... [2023-11-17 15:01:03,753 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:03" (1/1) ... [2023-11-17 15:01:03,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:03" (1/1) ... [2023-11-17 15:01:03,759 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:03" (1/1) ... [2023-11-17 15:01:03,760 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:03" (1/1) ... [2023-11-17 15:01:03,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:01:03,779 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:01:03,779 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:01:03,779 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:01:03,780 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:03" (1/1) ... [2023-11-17 15:01:03,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:01:03,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:01:03,822 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) [2023-11-17 15:01:03,837 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 [2023-11-17 15:01:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-17 15:01:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-17 15:01:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-17 15:01:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-17 15:01:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:01:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:01:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 15:01:03,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:01:03,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:01:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 15:01:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:01:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:01:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:01:03,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:01:03,863 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:01:04,039 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:01:04,042 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:01:04,354 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:01:04,374 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:01:04,375 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 15:01:04,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:01:04 BoogieIcfgContainer [2023-11-17 15:01:04,377 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:01:04,379 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:01:04,379 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:01:04,382 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:01:04,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:01:03" (1/3) ... [2023-11-17 15:01:04,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b64c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:01:04, skipping insertion in model container [2023-11-17 15:01:04,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:03" (2/3) ... [2023-11-17 15:01:04,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b64c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:01:04, skipping insertion in model container [2023-11-17 15:01:04,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:01:04" (3/3) ... [2023-11-17 15:01:04,385 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2023-11-17 15:01:04,401 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:01:04,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 15:01:04,402 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:01:04,478 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 15:01:04,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 165 transitions, 344 flow [2023-11-17 15:01:04,589 INFO L124 PetriNetUnfolderBase]: 10/163 cut-off events. [2023-11-17 15:01:04,590 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:01:04,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 163 events. 10/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 395 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 121. Up to 3 conditions per place. [2023-11-17 15:01:04,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 165 transitions, 344 flow [2023-11-17 15:01:04,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 153 transitions, 315 flow [2023-11-17 15:01:04,609 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:01:04,622 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 153 transitions, 315 flow [2023-11-17 15:01:04,624 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 153 transitions, 315 flow [2023-11-17 15:01:04,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 153 transitions, 315 flow [2023-11-17 15:01:04,659 INFO L124 PetriNetUnfolderBase]: 10/153 cut-off events. [2023-11-17 15:01:04,659 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 15:01:04,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 153 events. 10/153 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 320 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 121. Up to 3 conditions per place. [2023-11-17 15:01:04,669 INFO L119 LiptonReduction]: Number of co-enabled transitions 7680 [2023-11-17 15:01:08,713 INFO L134 LiptonReduction]: Checked pairs total: 10369 [2023-11-17 15:01:08,714 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-11-17 15:01:08,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:01:08,733 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=LoopHeads, 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;@2c73653b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:01:08,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 15:01:08,738 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:01:08,738 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-11-17 15:01:08,738 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 15:01:08,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:08,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 15:01:08,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:08,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:08,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1319949506, now seen corresponding path program 1 times [2023-11-17 15:01:08,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:08,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648538079] [2023-11-17 15:01:08,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:08,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:09,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:09,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:09,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648538079] [2023-11-17 15:01:09,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648538079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:09,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:09,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:01:09,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542099903] [2023-11-17 15:01:09,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:09,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:01:09,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:09,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:01:09,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:01:09,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 312 [2023-11-17 15:01:09,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:09,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:09,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 312 [2023-11-17 15:01:09,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:09,302 INFO L124 PetriNetUnfolderBase]: 661/1082 cut-off events. [2023-11-17 15:01:09,303 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-11-17 15:01:09,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 1082 events. 661/1082 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3982 event pairs, 283 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 2034. Up to 687 conditions per place. [2023-11-17 15:01:09,313 INFO L140 encePairwiseOnDemand]: 307/312 looper letters, 50 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-11-17 15:01:09,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 227 flow [2023-11-17 15:01:09,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:01:09,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:01:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2023-11-17 15:01:09,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49786324786324787 [2023-11-17 15:01:09,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2023-11-17 15:01:09,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2023-11-17 15:01:09,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:09,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2023-11-17 15:01:09,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:09,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:09,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:09,348 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 73 flow. Second operand 3 states and 466 transitions. [2023-11-17 15:01:09,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 227 flow [2023-11-17 15:01:09,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 53 transitions, 219 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:01:09,355 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 85 flow [2023-11-17 15:01:09,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2023-11-17 15:01:09,361 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-11-17 15:01:09,362 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 85 flow [2023-11-17 15:01:09,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:09,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:09,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:09,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:01:09,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:09,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:09,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1721718006, now seen corresponding path program 1 times [2023-11-17 15:01:09,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:09,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442355427] [2023-11-17 15:01:09,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:09,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:09,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:09,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442355427] [2023-11-17 15:01:09,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442355427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:09,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:09,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:01:09,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073121715] [2023-11-17 15:01:09,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:09,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:01:09,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:09,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:01:09,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:01:09,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 312 [2023-11-17 15:01:09,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:09,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:09,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 312 [2023-11-17 15:01:09,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:09,661 INFO L124 PetriNetUnfolderBase]: 652/1083 cut-off events. [2023-11-17 15:01:09,661 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-17 15:01:09,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2310 conditions, 1083 events. 652/1083 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4632 event pairs, 304 based on Foata normal form. 0/919 useless extension candidates. Maximal degree in co-relation 1950. Up to 974 conditions per place. [2023-11-17 15:01:09,667 INFO L140 encePairwiseOnDemand]: 309/312 looper letters, 46 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-11-17 15:01:09,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 224 flow [2023-11-17 15:01:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:01:09,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:01:09,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2023-11-17 15:01:09,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2023-11-17 15:01:09,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2023-11-17 15:01:09,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2023-11-17 15:01:09,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:09,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2023-11-17 15:01:09,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:09,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:09,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:09,678 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 85 flow. Second operand 3 states and 481 transitions. [2023-11-17 15:01:09,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 224 flow [2023-11-17 15:01:09,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:01:09,682 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 97 flow [2023-11-17 15:01:09,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2023-11-17 15:01:09,683 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-11-17 15:01:09,683 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 97 flow [2023-11-17 15:01:09,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:09,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:09,684 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:09,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:01:09,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:09,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:09,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1202913597, now seen corresponding path program 1 times [2023-11-17 15:01:09,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:09,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952387756] [2023-11-17 15:01:09,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:09,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:09,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:09,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952387756] [2023-11-17 15:01:09,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952387756] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:01:09,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356425917] [2023-11-17 15:01:09,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:09,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:09,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:01:09,810 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) [2023-11-17 15:01:09,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 15:01:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:09,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 15:01:09,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:01:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:10,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:01:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:10,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356425917] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:01:10,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:01:10,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-17 15:01:10,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597093393] [2023-11-17 15:01:10,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:01:10,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:01:10,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:10,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:01:10,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:01:10,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 312 [2023-11-17 15:01:10,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 97 flow. Second operand has 10 states, 10 states have (on average 137.4) internal successors, (1374), 10 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:10,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:10,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 312 [2023-11-17 15:01:10,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:10,633 INFO L124 PetriNetUnfolderBase]: 1619/2654 cut-off events. [2023-11-17 15:01:10,633 INFO L125 PetriNetUnfolderBase]: For 840/840 co-relation queries the response was YES. [2023-11-17 15:01:10,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6125 conditions, 2654 events. 1619/2654 cut-off events. For 840/840 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 12070 event pairs, 246 based on Foata normal form. 82/2392 useless extension candidates. Maximal degree in co-relation 5546. Up to 795 conditions per place. [2023-11-17 15:01:10,649 INFO L140 encePairwiseOnDemand]: 304/312 looper letters, 155 selfloop transitions, 26 changer transitions 3/184 dead transitions. [2023-11-17 15:01:10,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 184 transitions, 855 flow [2023-11-17 15:01:10,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:01:10,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:01:10,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1795 transitions. [2023-11-17 15:01:10,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794337606837607 [2023-11-17 15:01:10,655 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1795 transitions. [2023-11-17 15:01:10,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1795 transitions. [2023-11-17 15:01:10,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:10,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1795 transitions. [2023-11-17 15:01:10,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 149.58333333333334) internal successors, (1795), 12 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:10,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 312.0) internal successors, (4056), 13 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:10,689 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 312.0) internal successors, (4056), 13 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:10,689 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 97 flow. Second operand 12 states and 1795 transitions. [2023-11-17 15:01:10,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 184 transitions, 855 flow [2023-11-17 15:01:10,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 184 transitions, 840 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:01:10,702 INFO L231 Difference]: Finished difference. Result has 54 places, 59 transitions, 309 flow [2023-11-17 15:01:10,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=309, PETRI_PLACES=54, PETRI_TRANSITIONS=59} [2023-11-17 15:01:10,704 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places. [2023-11-17 15:01:10,705 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 59 transitions, 309 flow [2023-11-17 15:01:10,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 137.4) internal successors, (1374), 10 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:10,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:10,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:10,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 15:01:10,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:10,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:10,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:10,913 INFO L85 PathProgramCache]: Analyzing trace with hash -608378297, now seen corresponding path program 1 times [2023-11-17 15:01:10,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:10,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959517929] [2023-11-17 15:01:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:10,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:11,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:11,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959517929] [2023-11-17 15:01:11,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959517929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:11,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:11,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:01:11,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364512714] [2023-11-17 15:01:11,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:11,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:01:11,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:11,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:01:11,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:01:11,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 312 [2023-11-17 15:01:11,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:11,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:11,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 312 [2023-11-17 15:01:11,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:11,138 INFO L124 PetriNetUnfolderBase]: 552/1017 cut-off events. [2023-11-17 15:01:11,138 INFO L125 PetriNetUnfolderBase]: For 460/460 co-relation queries the response was YES. [2023-11-17 15:01:11,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2596 conditions, 1017 events. 552/1017 cut-off events. For 460/460 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4260 event pairs, 98 based on Foata normal form. 0/929 useless extension candidates. Maximal degree in co-relation 2484. Up to 746 conditions per place. [2023-11-17 15:01:11,145 INFO L140 encePairwiseOnDemand]: 307/312 looper letters, 47 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-11-17 15:01:11,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 352 flow [2023-11-17 15:01:11,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:01:11,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:01:11,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-11-17 15:01:11,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032051282051282 [2023-11-17 15:01:11,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-11-17 15:01:11,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-11-17 15:01:11,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:11,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-11-17 15:01:11,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:11,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:11,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:11,151 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 309 flow. Second operand 3 states and 471 transitions. [2023-11-17 15:01:11,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 352 flow [2023-11-17 15:01:11,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 331 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-17 15:01:11,156 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 216 flow [2023-11-17 15:01:11,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2023-11-17 15:01:11,157 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-11-17 15:01:11,158 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 216 flow [2023-11-17 15:01:11,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:11,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:11,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:11,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:01:11,158 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:11,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:11,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1457996879, now seen corresponding path program 1 times [2023-11-17 15:01:11,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:11,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667388479] [2023-11-17 15:01:11,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:11,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:11,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:11,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:11,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667388479] [2023-11-17 15:01:11,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667388479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:11,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:11,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:01:11,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334824449] [2023-11-17 15:01:11,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:11,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:01:11,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:11,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:01:11,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:01:11,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 312 [2023-11-17 15:01:11,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:11,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:11,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 312 [2023-11-17 15:01:11,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:11,348 INFO L124 PetriNetUnfolderBase]: 624/1145 cut-off events. [2023-11-17 15:01:11,348 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2023-11-17 15:01:11,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 1145 events. 624/1145 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4757 event pairs, 391 based on Foata normal form. 24/1169 useless extension candidates. Maximal degree in co-relation 2214. Up to 849 conditions per place. [2023-11-17 15:01:11,355 INFO L140 encePairwiseOnDemand]: 306/312 looper letters, 56 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2023-11-17 15:01:11,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 383 flow [2023-11-17 15:01:11,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:01:11,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:01:11,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-11-17 15:01:11,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2023-11-17 15:01:11,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-11-17 15:01:11,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-11-17 15:01:11,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:11,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-11-17 15:01:11,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:11,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:11,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:11,360 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 216 flow. Second operand 3 states and 462 transitions. [2023-11-17 15:01:11,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 383 flow [2023-11-17 15:01:11,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:01:11,364 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 248 flow [2023-11-17 15:01:11,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-11-17 15:01:11,365 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-11-17 15:01:11,365 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 248 flow [2023-11-17 15:01:11,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:11,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:11,366 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] [2023-11-17 15:01:11,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:01:11,366 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:11,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:11,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1046279798, now seen corresponding path program 1 times [2023-11-17 15:01:11,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:11,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941178065] [2023-11-17 15:01:11,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:11,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:12,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:12,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:12,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941178065] [2023-11-17 15:01:12,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941178065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:12,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:12,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:01:12,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101666451] [2023-11-17 15:01:12,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:12,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:01:12,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:12,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:01:12,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:01:12,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 312 [2023-11-17 15:01:12,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 248 flow. Second operand has 15 states, 15 states have (on average 91.4) internal successors, (1371), 15 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:12,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:12,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 312 [2023-11-17 15:01:12,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:13,123 INFO L124 PetriNetUnfolderBase]: 886/1645 cut-off events. [2023-11-17 15:01:13,123 INFO L125 PetriNetUnfolderBase]: For 1167/1167 co-relation queries the response was YES. [2023-11-17 15:01:13,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 1645 events. 886/1645 cut-off events. For 1167/1167 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7515 event pairs, 198 based on Foata normal form. 26/1657 useless extension candidates. Maximal degree in co-relation 2715. Up to 969 conditions per place. [2023-11-17 15:01:13,133 INFO L140 encePairwiseOnDemand]: 294/312 looper letters, 101 selfloop transitions, 30 changer transitions 26/157 dead transitions. [2023-11-17 15:01:13,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 157 transitions, 881 flow [2023-11-17 15:01:13,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 15:01:13,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-17 15:01:13,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1761 transitions. [2023-11-17 15:01:13,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31356837606837606 [2023-11-17 15:01:13,139 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1761 transitions. [2023-11-17 15:01:13,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1761 transitions. [2023-11-17 15:01:13,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:13,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1761 transitions. [2023-11-17 15:01:13,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 97.83333333333333) internal successors, (1761), 18 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:13,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 312.0) internal successors, (5928), 19 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:13,153 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 312.0) internal successors, (5928), 19 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:13,153 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 248 flow. Second operand 18 states and 1761 transitions. [2023-11-17 15:01:13,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 157 transitions, 881 flow [2023-11-17 15:01:13,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 157 transitions, 853 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-17 15:01:13,161 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 499 flow [2023-11-17 15:01:13,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=499, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2023-11-17 15:01:13,162 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 48 predicate places. [2023-11-17 15:01:13,162 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 499 flow [2023-11-17 15:01:13,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 91.4) internal successors, (1371), 15 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:13,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:13,163 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] [2023-11-17 15:01:13,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:01:13,163 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:13,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:13,163 INFO L85 PathProgramCache]: Analyzing trace with hash -985708886, now seen corresponding path program 2 times [2023-11-17 15:01:13,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:13,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159372035] [2023-11-17 15:01:13,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:13,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:13,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:13,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159372035] [2023-11-17 15:01:13,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159372035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:13,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:13,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-17 15:01:13,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181364930] [2023-11-17 15:01:13,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:13,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 15:01:13,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:13,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 15:01:13,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:01:13,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 312 [2023-11-17 15:01:13,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 499 flow. Second operand has 16 states, 16 states have (on average 86.3125) internal successors, (1381), 16 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:13,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:13,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 312 [2023-11-17 15:01:13,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:15,077 INFO L124 PetriNetUnfolderBase]: 1208/2259 cut-off events. [2023-11-17 15:01:15,078 INFO L125 PetriNetUnfolderBase]: For 2289/2289 co-relation queries the response was YES. [2023-11-17 15:01:15,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6899 conditions, 2259 events. 1208/2259 cut-off events. For 2289/2289 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 10797 event pairs, 374 based on Foata normal form. 16/2261 useless extension candidates. Maximal degree in co-relation 5107. Up to 1405 conditions per place. [2023-11-17 15:01:15,093 INFO L140 encePairwiseOnDemand]: 294/312 looper letters, 119 selfloop transitions, 29 changer transitions 26/174 dead transitions. [2023-11-17 15:01:15,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 174 transitions, 1229 flow [2023-11-17 15:01:15,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:01:15,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:01:15,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1404 transitions. [2023-11-17 15:01:15,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2023-11-17 15:01:15,098 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1404 transitions. [2023-11-17 15:01:15,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1404 transitions. [2023-11-17 15:01:15,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:15,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1404 transitions. [2023-11-17 15:01:15,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 93.6) internal successors, (1404), 15 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:15,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 312.0) internal successors, (4992), 16 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:15,109 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 312.0) internal successors, (4992), 16 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:15,109 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 499 flow. Second operand 15 states and 1404 transitions. [2023-11-17 15:01:15,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 174 transitions, 1229 flow [2023-11-17 15:01:15,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 174 transitions, 1219 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-11-17 15:01:15,121 INFO L231 Difference]: Finished difference. Result has 107 places, 96 transitions, 774 flow [2023-11-17 15:01:15,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=774, PETRI_PLACES=107, PETRI_TRANSITIONS=96} [2023-11-17 15:01:15,122 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 73 predicate places. [2023-11-17 15:01:15,122 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 96 transitions, 774 flow [2023-11-17 15:01:15,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 86.3125) internal successors, (1381), 16 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:15,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:15,123 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] [2023-11-17 15:01:15,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:01:15,123 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:15,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:15,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1298620512, now seen corresponding path program 3 times [2023-11-17 15:01:15,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:15,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596136714] [2023-11-17 15:01:15,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:15,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:15,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:15,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596136714] [2023-11-17 15:01:15,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596136714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:15,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:15,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-17 15:01:15,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686898425] [2023-11-17 15:01:15,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:15,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 15:01:15,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:15,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 15:01:15,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:01:15,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 312 [2023-11-17 15:01:15,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 96 transitions, 774 flow. Second operand has 16 states, 16 states have (on average 86.3125) internal successors, (1381), 16 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:15,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:15,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 312 [2023-11-17 15:01:15,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:17,103 INFO L124 PetriNetUnfolderBase]: 1356/2543 cut-off events. [2023-11-17 15:01:17,104 INFO L125 PetriNetUnfolderBase]: For 3881/3881 co-relation queries the response was YES. [2023-11-17 15:01:17,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8394 conditions, 2543 events. 1356/2543 cut-off events. For 3881/3881 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 12535 event pairs, 371 based on Foata normal form. 16/2545 useless extension candidates. Maximal degree in co-relation 5433. Up to 1368 conditions per place. [2023-11-17 15:01:17,125 INFO L140 encePairwiseOnDemand]: 296/312 looper letters, 120 selfloop transitions, 37 changer transitions 27/184 dead transitions. [2023-11-17 15:01:17,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 184 transitions, 1485 flow [2023-11-17 15:01:17,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:01:17,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:01:17,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1404 transitions. [2023-11-17 15:01:17,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2023-11-17 15:01:17,131 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1404 transitions. [2023-11-17 15:01:17,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1404 transitions. [2023-11-17 15:01:17,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:17,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1404 transitions. [2023-11-17 15:01:17,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 93.6) internal successors, (1404), 15 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:17,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 312.0) internal successors, (4992), 16 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:17,142 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 312.0) internal successors, (4992), 16 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:17,143 INFO L175 Difference]: Start difference. First operand has 107 places, 96 transitions, 774 flow. Second operand 15 states and 1404 transitions. [2023-11-17 15:01:17,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 184 transitions, 1485 flow [2023-11-17 15:01:17,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 184 transitions, 1465 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-17 15:01:17,168 INFO L231 Difference]: Finished difference. Result has 126 places, 106 transitions, 990 flow [2023-11-17 15:01:17,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=990, PETRI_PLACES=126, PETRI_TRANSITIONS=106} [2023-11-17 15:01:17,171 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 92 predicate places. [2023-11-17 15:01:17,171 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 106 transitions, 990 flow [2023-11-17 15:01:17,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 86.3125) internal successors, (1381), 16 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:17,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:17,172 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-11-17 15:01:17,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:01:17,175 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:17,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:17,175 INFO L85 PathProgramCache]: Analyzing trace with hash 19606045, now seen corresponding path program 2 times [2023-11-17 15:01:17,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:17,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57659128] [2023-11-17 15:01:17,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:17,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:17,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:17,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57659128] [2023-11-17 15:01:17,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57659128] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:01:17,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824613390] [2023-11-17 15:01:17,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:01:17,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:17,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:01:17,326 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) [2023-11-17 15:01:17,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 15:01:17,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:01:17,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:01:17,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:01:17,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:01:17,496 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:17,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:01:17,573 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:17,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824613390] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:01:17,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:01:17,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2023-11-17 15:01:17,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492976114] [2023-11-17 15:01:17,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:01:17,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:01:17,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:17,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:01:17,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:01:17,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 312 [2023-11-17 15:01:17,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 106 transitions, 990 flow. Second operand has 13 states, 13 states have (on average 137.6153846153846) internal successors, (1789), 13 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:17,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:17,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 312 [2023-11-17 15:01:17,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:18,286 INFO L124 PetriNetUnfolderBase]: 1580/2955 cut-off events. [2023-11-17 15:01:18,286 INFO L125 PetriNetUnfolderBase]: For 6593/6593 co-relation queries the response was YES. [2023-11-17 15:01:18,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10325 conditions, 2955 events. 1580/2955 cut-off events. For 6593/6593 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14575 event pairs, 457 based on Foata normal form. 16/2957 useless extension candidates. Maximal degree in co-relation 6684. Up to 1002 conditions per place. [2023-11-17 15:01:18,316 INFO L140 encePairwiseOnDemand]: 306/312 looper letters, 197 selfloop transitions, 29 changer transitions 6/232 dead transitions. [2023-11-17 15:01:18,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 232 transitions, 2122 flow [2023-11-17 15:01:18,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 15:01:18,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 15:01:18,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1911 transitions. [2023-11-17 15:01:18,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2023-11-17 15:01:18,322 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1911 transitions. [2023-11-17 15:01:18,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1911 transitions. [2023-11-17 15:01:18,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:18,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1911 transitions. [2023-11-17 15:01:18,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 147.0) internal successors, (1911), 13 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:18,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 312.0) internal successors, (4368), 14 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:18,334 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 312.0) internal successors, (4368), 14 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:18,335 INFO L175 Difference]: Start difference. First operand has 126 places, 106 transitions, 990 flow. Second operand 13 states and 1911 transitions. [2023-11-17 15:01:18,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 232 transitions, 2122 flow [2023-11-17 15:01:18,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 232 transitions, 2071 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-11-17 15:01:18,369 INFO L231 Difference]: Finished difference. Result has 136 places, 113 transitions, 1095 flow [2023-11-17 15:01:18,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1095, PETRI_PLACES=136, PETRI_TRANSITIONS=113} [2023-11-17 15:01:18,371 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 102 predicate places. [2023-11-17 15:01:18,371 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 113 transitions, 1095 flow [2023-11-17 15:01:18,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 137.6153846153846) internal successors, (1789), 13 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:18,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:18,372 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:18,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 15:01:18,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-17 15:01:18,578 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:18,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:18,578 INFO L85 PathProgramCache]: Analyzing trace with hash 2076783383, now seen corresponding path program 4 times [2023-11-17 15:01:18,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:18,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327768700] [2023-11-17 15:01:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:18,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:19,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:19,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327768700] [2023-11-17 15:01:19,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327768700] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:01:19,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009661938] [2023-11-17 15:01:19,285 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:01:19,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:19,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:01:19,290 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) [2023-11-17 15:01:19,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 15:01:19,405 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:01:19,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:01:19,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-17 15:01:19,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:01:19,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 15:01:20,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-11-17 15:01:20,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:20,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:01:20,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-11-17 15:01:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:01:20,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009661938] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:01:20,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:01:20,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15, 15] total 43 [2023-11-17 15:01:20,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470728687] [2023-11-17 15:01:20,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:20,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 15:01:20,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:20,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 15:01:20,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1751, Unknown=0, NotChecked=0, Total=1892 [2023-11-17 15:01:20,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 312 [2023-11-17 15:01:20,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 113 transitions, 1095 flow. Second operand has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:20,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:20,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 312 [2023-11-17 15:01:20,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:22,566 INFO L124 PetriNetUnfolderBase]: 2276/4230 cut-off events. [2023-11-17 15:01:22,566 INFO L125 PetriNetUnfolderBase]: For 9669/9669 co-relation queries the response was YES. [2023-11-17 15:01:22,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15095 conditions, 4230 events. 2276/4230 cut-off events. For 9669/9669 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 22977 event pairs, 666 based on Foata normal form. 0/4209 useless extension candidates. Maximal degree in co-relation 11245. Up to 1415 conditions per place. [2023-11-17 15:01:22,609 INFO L140 encePairwiseOnDemand]: 295/312 looper letters, 134 selfloop transitions, 108 changer transitions 1/243 dead transitions. [2023-11-17 15:01:22,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 243 transitions, 2267 flow [2023-11-17 15:01:22,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 15:01:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 15:01:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2120 transitions. [2023-11-17 15:01:22,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30885780885780884 [2023-11-17 15:01:22,617 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2120 transitions. [2023-11-17 15:01:22,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2120 transitions. [2023-11-17 15:01:22,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:22,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2120 transitions. [2023-11-17 15:01:22,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 96.36363636363636) internal successors, (2120), 22 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:22,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 312.0) internal successors, (7176), 23 states have internal predecessors, (7176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:22,635 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 312.0) internal successors, (7176), 23 states have internal predecessors, (7176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:22,636 INFO L175 Difference]: Start difference. First operand has 136 places, 113 transitions, 1095 flow. Second operand 22 states and 2120 transitions. [2023-11-17 15:01:22,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 243 transitions, 2267 flow [2023-11-17 15:01:22,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 243 transitions, 2146 flow, removed 33 selfloop flow, removed 7 redundant places. [2023-11-17 15:01:22,683 INFO L231 Difference]: Finished difference. Result has 157 places, 160 transitions, 1737 flow [2023-11-17 15:01:22,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1737, PETRI_PLACES=157, PETRI_TRANSITIONS=160} [2023-11-17 15:01:22,685 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 123 predicate places. [2023-11-17 15:01:22,685 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 160 transitions, 1737 flow [2023-11-17 15:01:22,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:22,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:22,692 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:22,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 15:01:22,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:22,898 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:22,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:22,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1527704705, now seen corresponding path program 5 times [2023-11-17 15:01:22,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:22,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48498447] [2023-11-17 15:01:22,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:22,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:23,752 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:23,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:23,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48498447] [2023-11-17 15:01:23,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48498447] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:01:23,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715495747] [2023-11-17 15:01:23,752 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:01:23,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:23,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:01:23,756 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) [2023-11-17 15:01:23,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 15:01:23,885 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:01:23,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:01:23,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-17 15:01:23,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:01:23,922 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-11-17 15:01:23,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-11-17 15:01:24,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 15:01:24,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-17 15:01:24,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-11-17 15:01:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:24,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:01:24,973 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_298 (Array Int Int))) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_298) |c_~#arr~0.base|) (+ (* |c_t1Thread1of1ForFork1_inc_top_#t~post31#1| 4) |c_~#arr~0.offset|)) 4294967296)))) is different from false [2023-11-17 15:01:25,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:01:25,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-17 15:01:25,080 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:01:25,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-11-17 15:01:25,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-11-17 15:01:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-11-17 15:01:25,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715495747] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:01:25,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:01:25,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 14] total 43 [2023-11-17 15:01:25,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300545753] [2023-11-17 15:01:25,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:01:25,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-17 15:01:25,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:25,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-17 15:01:25,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1726, Unknown=11, NotChecked=84, Total=1980 [2023-11-17 15:01:25,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 312 [2023-11-17 15:01:25,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 160 transitions, 1737 flow. Second operand has 45 states, 45 states have (on average 86.64444444444445) internal successors, (3899), 45 states have internal predecessors, (3899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:25,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:25,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 312 [2023-11-17 15:01:25,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:31,792 INFO L124 PetriNetUnfolderBase]: 3748/7023 cut-off events. [2023-11-17 15:01:31,792 INFO L125 PetriNetUnfolderBase]: For 24585/24585 co-relation queries the response was YES. [2023-11-17 15:01:31,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27694 conditions, 7023 events. 3748/7023 cut-off events. For 24585/24585 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 43519 event pairs, 651 based on Foata normal form. 32/7021 useless extension candidates. Maximal degree in co-relation 21161. Up to 1769 conditions per place. [2023-11-17 15:01:31,848 INFO L140 encePairwiseOnDemand]: 290/312 looper letters, 267 selfloop transitions, 243 changer transitions 15/525 dead transitions. [2023-11-17 15:01:31,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 525 transitions, 5113 flow [2023-11-17 15:01:31,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-17 15:01:31,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-11-17 15:01:31,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 4660 transitions. [2023-11-17 15:01:31,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29286073403720464 [2023-11-17 15:01:31,858 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 4660 transitions. [2023-11-17 15:01:31,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 4660 transitions. [2023-11-17 15:01:31,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:31,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 4660 transitions. [2023-11-17 15:01:31,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 91.37254901960785) internal successors, (4660), 51 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:31,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 312.0) internal successors, (16224), 52 states have internal predecessors, (16224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:31,897 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 312.0) internal successors, (16224), 52 states have internal predecessors, (16224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:31,897 INFO L175 Difference]: Start difference. First operand has 157 places, 160 transitions, 1737 flow. Second operand 51 states and 4660 transitions. [2023-11-17 15:01:31,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 525 transitions, 5113 flow [2023-11-17 15:01:32,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 525 transitions, 4866 flow, removed 90 selfloop flow, removed 5 redundant places. [2023-11-17 15:01:32,012 INFO L231 Difference]: Finished difference. Result has 217 places, 312 transitions, 3988 flow [2023-11-17 15:01:32,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=3988, PETRI_PLACES=217, PETRI_TRANSITIONS=312} [2023-11-17 15:01:32,012 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 183 predicate places. [2023-11-17 15:01:32,013 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 312 transitions, 3988 flow [2023-11-17 15:01:32,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 86.64444444444445) internal successors, (3899), 45 states have internal predecessors, (3899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:32,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:32,014 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:32,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 15:01:32,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:32,225 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:32,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:32,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1687298381, now seen corresponding path program 1 times [2023-11-17 15:01:32,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:32,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260031155] [2023-11-17 15:01:32,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:32,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:01:32,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:32,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260031155] [2023-11-17 15:01:32,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260031155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:01:32,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390127280] [2023-11-17 15:01:32,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:32,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:32,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:01:32,400 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) [2023-11-17 15:01:32,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 15:01:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:32,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:01:32,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:01:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 15:01:32,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:01:32,619 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 15:01:32,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390127280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:01:32,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:01:32,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2023-11-17 15:01:32,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322696088] [2023-11-17 15:01:32,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:01:32,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:01:32,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:32,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:01:32,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:01:32,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 312 [2023-11-17 15:01:32,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 312 transitions, 3988 flow. Second operand has 13 states, 13 states have (on average 129.69230769230768) internal successors, (1686), 13 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:32,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:32,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 312 [2023-11-17 15:01:32,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:34,566 INFO L124 PetriNetUnfolderBase]: 4158/7833 cut-off events. [2023-11-17 15:01:34,566 INFO L125 PetriNetUnfolderBase]: For 45088/45088 co-relation queries the response was YES. [2023-11-17 15:01:34,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41331 conditions, 7833 events. 4158/7833 cut-off events. For 45088/45088 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 49837 event pairs, 1203 based on Foata normal form. 28/7833 useless extension candidates. Maximal degree in co-relation 38645. Up to 3519 conditions per place. [2023-11-17 15:01:34,634 INFO L140 encePairwiseOnDemand]: 302/312 looper letters, 360 selfloop transitions, 119 changer transitions 15/494 dead transitions. [2023-11-17 15:01:34,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 494 transitions, 6632 flow [2023-11-17 15:01:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:01:34,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:01:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2037 transitions. [2023-11-17 15:01:34,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43525641025641026 [2023-11-17 15:01:34,638 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2037 transitions. [2023-11-17 15:01:34,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2037 transitions. [2023-11-17 15:01:34,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:34,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2037 transitions. [2023-11-17 15:01:34,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 135.8) internal successors, (2037), 15 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:34,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 312.0) internal successors, (4992), 16 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:34,647 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 312.0) internal successors, (4992), 16 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:34,647 INFO L175 Difference]: Start difference. First operand has 217 places, 312 transitions, 3988 flow. Second operand 15 states and 2037 transitions. [2023-11-17 15:01:34,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 494 transitions, 6632 flow [2023-11-17 15:01:34,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 494 transitions, 6171 flow, removed 198 selfloop flow, removed 16 redundant places. [2023-11-17 15:01:34,885 INFO L231 Difference]: Finished difference. Result has 221 places, 346 transitions, 4557 flow [2023-11-17 15:01:34,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=3615, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4557, PETRI_PLACES=221, PETRI_TRANSITIONS=346} [2023-11-17 15:01:34,886 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 187 predicate places. [2023-11-17 15:01:34,887 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 346 transitions, 4557 flow [2023-11-17 15:01:34,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 129.69230769230768) internal successors, (1686), 13 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:34,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:34,887 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:34,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 15:01:35,093 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,SelfDestructingSolverStorable11 [2023-11-17 15:01:35,093 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:35,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:35,094 INFO L85 PathProgramCache]: Analyzing trace with hash 507223880, now seen corresponding path program 6 times [2023-11-17 15:01:35,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:35,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089489164] [2023-11-17 15:01:35,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:35,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:36,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:36,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089489164] [2023-11-17 15:01:36,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089489164] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:01:36,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121490257] [2023-11-17 15:01:36,316 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:01:36,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:36,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:01:36,321 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) [2023-11-17 15:01:36,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 15:01:36,439 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-17 15:01:36,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:01:36,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-17 15:01:36,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:01:36,467 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-11-17 15:01:36,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-11-17 15:01:36,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-17 15:01:36,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2023-11-17 15:01:37,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2023-11-17 15:01:37,187 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-17 15:01:37,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:01:37,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:01:37,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-17 15:01:37,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:01:37,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-11-17 15:01:37,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-11-17 15:01:37,851 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-17 15:01:37,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121490257] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:01:37,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:01:37,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 47 [2023-11-17 15:01:37,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577791221] [2023-11-17 15:01:37,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:01:37,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-17 15:01:37,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:37,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-17 15:01:37,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2176, Unknown=12, NotChecked=0, Total=2352 [2023-11-17 15:01:37,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 312 [2023-11-17 15:01:37,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 346 transitions, 4557 flow. Second operand has 49 states, 49 states have (on average 84.85714285714286) internal successors, (4158), 49 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:37,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:37,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 312 [2023-11-17 15:01:37,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:45,862 INFO L124 PetriNetUnfolderBase]: 5767/10966 cut-off events. [2023-11-17 15:01:45,862 INFO L125 PetriNetUnfolderBase]: For 62853/62853 co-relation queries the response was YES. [2023-11-17 15:01:45,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56527 conditions, 10966 events. 5767/10966 cut-off events. For 62853/62853 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 74173 event pairs, 640 based on Foata normal form. 6/10929 useless extension candidates. Maximal degree in co-relation 53425. Up to 3790 conditions per place. [2023-11-17 15:01:45,963 INFO L140 encePairwiseOnDemand]: 296/312 looper letters, 373 selfloop transitions, 453 changer transitions 15/841 dead transitions. [2023-11-17 15:01:45,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 841 transitions, 10685 flow [2023-11-17 15:01:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-11-17 15:01:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-11-17 15:01:45,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 5967 transitions. [2023-11-17 15:01:45,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28544776119402987 [2023-11-17 15:01:45,972 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 5967 transitions. [2023-11-17 15:01:45,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 5967 transitions. [2023-11-17 15:01:45,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:45,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 5967 transitions. [2023-11-17 15:01:45,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 89.05970149253731) internal successors, (5967), 67 states have internal predecessors, (5967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:46,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 312.0) internal successors, (21216), 68 states have internal predecessors, (21216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:46,007 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 312.0) internal successors, (21216), 68 states have internal predecessors, (21216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:46,007 INFO L175 Difference]: Start difference. First operand has 221 places, 346 transitions, 4557 flow. Second operand 67 states and 5967 transitions. [2023-11-17 15:01:46,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 841 transitions, 10685 flow [2023-11-17 15:01:46,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 841 transitions, 10521 flow, removed 76 selfloop flow, removed 3 redundant places. [2023-11-17 15:01:46,315 INFO L231 Difference]: Finished difference. Result has 295 places, 524 transitions, 7964 flow [2023-11-17 15:01:46,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=4449, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=7964, PETRI_PLACES=295, PETRI_TRANSITIONS=524} [2023-11-17 15:01:46,316 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 261 predicate places. [2023-11-17 15:01:46,316 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 524 transitions, 7964 flow [2023-11-17 15:01:46,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 84.85714285714286) internal successors, (4158), 49 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:46,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:46,317 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:46,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-17 15:01:46,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:46,526 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:46,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:46,526 INFO L85 PathProgramCache]: Analyzing trace with hash -825671470, now seen corresponding path program 1 times [2023-11-17 15:01:46,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:46,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48415688] [2023-11-17 15:01:46,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:46,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:47,446 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:47,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:47,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48415688] [2023-11-17 15:01:47,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48415688] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:01:47,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414810120] [2023-11-17 15:01:47,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:47,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:47,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:01:47,448 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) [2023-11-17 15:01:47,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 15:01:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:47,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-17 15:01:47,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:01:47,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 15:01:48,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-11-17 15:01:48,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-11-17 15:01:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:48,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:01:49,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 48 [2023-11-17 15:01:49,714 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:49,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414810120] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:01:49,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:01:49,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 19] total 58 [2023-11-17 15:01:49,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253819514] [2023-11-17 15:01:49,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:01:49,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-11-17 15:01:49,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:49,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-11-17 15:01:49,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=3178, Unknown=0, NotChecked=0, Total=3540 [2023-11-17 15:01:49,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 312 [2023-11-17 15:01:49,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 524 transitions, 7964 flow. Second operand has 60 states, 60 states have (on average 91.8) internal successors, (5508), 60 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:49,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:49,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 312 [2023-11-17 15:01:49,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:57,019 INFO L124 PetriNetUnfolderBase]: 7891/15142 cut-off events. [2023-11-17 15:01:57,019 INFO L125 PetriNetUnfolderBase]: For 102046/102046 co-relation queries the response was YES. [2023-11-17 15:01:57,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83704 conditions, 15142 events. 7891/15142 cut-off events. For 102046/102046 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 104672 event pairs, 1886 based on Foata normal form. 98/15186 useless extension candidates. Maximal degree in co-relation 76117. Up to 6528 conditions per place. [2023-11-17 15:01:57,165 INFO L140 encePairwiseOnDemand]: 294/312 looper letters, 614 selfloop transitions, 398 changer transitions 74/1086 dead transitions. [2023-11-17 15:01:57,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 1086 transitions, 16038 flow [2023-11-17 15:01:57,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-17 15:01:57,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-11-17 15:01:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 4928 transitions. [2023-11-17 15:01:57,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30970336852689795 [2023-11-17 15:01:57,181 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 4928 transitions. [2023-11-17 15:01:57,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 4928 transitions. [2023-11-17 15:01:57,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:57,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 4928 transitions. [2023-11-17 15:01:57,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 96.62745098039215) internal successors, (4928), 51 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:57,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 312.0) internal successors, (16224), 52 states have internal predecessors, (16224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:57,211 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 312.0) internal successors, (16224), 52 states have internal predecessors, (16224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:57,211 INFO L175 Difference]: Start difference. First operand has 295 places, 524 transitions, 7964 flow. Second operand 51 states and 4928 transitions. [2023-11-17 15:01:57,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 1086 transitions, 16038 flow [2023-11-17 15:01:57,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 1086 transitions, 15186 flow, removed 274 selfloop flow, removed 17 redundant places. [2023-11-17 15:01:57,788 INFO L231 Difference]: Finished difference. Result has 359 places, 795 transitions, 12667 flow [2023-11-17 15:01:57,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=7406, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=12667, PETRI_PLACES=359, PETRI_TRANSITIONS=795} [2023-11-17 15:01:57,789 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 325 predicate places. [2023-11-17 15:01:57,790 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 795 transitions, 12667 flow [2023-11-17 15:01:57,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 91.8) internal successors, (5508), 60 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:57,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:57,791 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:57,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 15:01:57,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:57,992 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:57,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:57,992 INFO L85 PathProgramCache]: Analyzing trace with hash -332768194, now seen corresponding path program 2 times [2023-11-17 15:01:57,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:57,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826996900] [2023-11-17 15:01:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:57,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:59,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:59,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826996900] [2023-11-17 15:01:59,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826996900] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:01:59,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117364183] [2023-11-17 15:01:59,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:01:59,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:59,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:01:59,206 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) [2023-11-17 15:01:59,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 15:01:59,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:01:59,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:01:59,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-17 15:01:59,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:01:59,391 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-11-17 15:01:59,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-11-17 15:01:59,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 15:01:59,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-17 15:01:59,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:01:59,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-17 15:02:00,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-11-17 15:02:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:02:00,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:02:01,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:02:01,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-17 15:02:01,170 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:02:01,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-11-17 15:02:01,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-11-17 15:02:01,359 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:02:01,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117364183] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:02:01,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:02:01,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 19] total 58 [2023-11-17 15:02:01,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430517010] [2023-11-17 15:02:01,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:02:01,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-11-17 15:02:01,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:02:01,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-11-17 15:02:01,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=3302, Unknown=7, NotChecked=0, Total=3540 [2023-11-17 15:02:01,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 312 [2023-11-17 15:02:01,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 795 transitions, 12667 flow. Second operand has 60 states, 60 states have (on average 86.75) internal successors, (5205), 60 states have internal predecessors, (5205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:01,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:02:01,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 312 [2023-11-17 15:02:01,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:02:15,175 INFO L124 PetriNetUnfolderBase]: 10593/20662 cut-off events. [2023-11-17 15:02:15,175 INFO L125 PetriNetUnfolderBase]: For 167771/167771 co-relation queries the response was YES. [2023-11-17 15:02:15,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121260 conditions, 20662 events. 10593/20662 cut-off events. For 167771/167771 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 147923 event pairs, 1318 based on Foata normal form. 268/20876 useless extension candidates. Maximal degree in co-relation 108827. Up to 6479 conditions per place. [2023-11-17 15:02:15,474 INFO L140 encePairwiseOnDemand]: 291/312 looper letters, 330 selfloop transitions, 1061 changer transitions 61/1452 dead transitions. [2023-11-17 15:02:15,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 1452 transitions, 23725 flow [2023-11-17 15:02:15,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-11-17 15:02:15,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-11-17 15:02:15,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 6178 transitions. [2023-11-17 15:02:15,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2911953242835596 [2023-11-17 15:02:15,483 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 6178 transitions. [2023-11-17 15:02:15,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 6178 transitions. [2023-11-17 15:02:15,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:02:15,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 6178 transitions. [2023-11-17 15:02:15,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 90.8529411764706) internal successors, (6178), 68 states have internal predecessors, (6178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:15,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 312.0) internal successors, (21528), 69 states have internal predecessors, (21528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:15,512 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 312.0) internal successors, (21528), 69 states have internal predecessors, (21528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:15,512 INFO L175 Difference]: Start difference. First operand has 359 places, 795 transitions, 12667 flow. Second operand 68 states and 6178 transitions. [2023-11-17 15:02:15,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 1452 transitions, 23725 flow [2023-11-17 15:02:16,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 1452 transitions, 22875 flow, removed 417 selfloop flow, removed 7 redundant places. [2023-11-17 15:02:17,005 INFO L231 Difference]: Finished difference. Result has 424 places, 1155 transitions, 20592 flow [2023-11-17 15:02:17,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=11880, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=695, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=20592, PETRI_PLACES=424, PETRI_TRANSITIONS=1155} [2023-11-17 15:02:17,007 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 390 predicate places. [2023-11-17 15:02:17,007 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 1155 transitions, 20592 flow [2023-11-17 15:02:17,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 86.75) internal successors, (5205), 60 states have internal predecessors, (5205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:17,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:02:17,008 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:02:17,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 15:02:17,215 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,SelfDestructingSolverStorable14 [2023-11-17 15:02:17,215 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:02:17,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:02:17,216 INFO L85 PathProgramCache]: Analyzing trace with hash -41950990, now seen corresponding path program 2 times [2023-11-17 15:02:17,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:02:17,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113973300] [2023-11-17 15:02:17,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:02:17,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:02:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:02:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:02:17,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:02:17,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113973300] [2023-11-17 15:02:17,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113973300] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:02:17,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746967550] [2023-11-17 15:02:17,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:02:17,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:02:17,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:02:17,373 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) [2023-11-17 15:02:17,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 15:02:17,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:02:17,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:02:17,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 15:02:17,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:02:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:02:17,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:02:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:02:17,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746967550] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:02:17,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:02:17,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-17 15:02:17,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098693935] [2023-11-17 15:02:17,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:02:17,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 15:02:17,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:02:17,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 15:02:17,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-11-17 15:02:17,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 312 [2023-11-17 15:02:17,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 1155 transitions, 20592 flow. Second operand has 17 states, 17 states have (on average 135.58823529411765) internal successors, (2305), 17 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:17,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:02:17,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 312 [2023-11-17 15:02:17,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:02:27,101 INFO L124 PetriNetUnfolderBase]: 12192/23943 cut-off events. [2023-11-17 15:02:27,102 INFO L125 PetriNetUnfolderBase]: For 209667/209667 co-relation queries the response was YES. [2023-11-17 15:02:27,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157219 conditions, 23943 events. 12192/23943 cut-off events. For 209667/209667 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 177467 event pairs, 3657 based on Foata normal form. 45/23946 useless extension candidates. Maximal degree in co-relation 137195. Up to 8636 conditions per place. [2023-11-17 15:02:27,508 INFO L140 encePairwiseOnDemand]: 304/312 looper letters, 985 selfloop transitions, 700 changer transitions 12/1697 dead transitions. [2023-11-17 15:02:27,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 1697 transitions, 32190 flow [2023-11-17 15:02:27,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 15:02:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-17 15:02:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2815 transitions. [2023-11-17 15:02:27,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511217948717949 [2023-11-17 15:02:27,512 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2815 transitions. [2023-11-17 15:02:27,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2815 transitions. [2023-11-17 15:02:27,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:02:27,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2815 transitions. [2023-11-17 15:02:27,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 140.75) internal successors, (2815), 20 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:27,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 312.0) internal successors, (6552), 21 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:27,521 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 312.0) internal successors, (6552), 21 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:27,521 INFO L175 Difference]: Start difference. First operand has 424 places, 1155 transitions, 20592 flow. Second operand 20 states and 2815 transitions. [2023-11-17 15:02:27,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 1697 transitions, 32190 flow [2023-11-17 15:02:29,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 1697 transitions, 30352 flow, removed 734 selfloop flow, removed 19 redundant places. [2023-11-17 15:02:29,439 INFO L231 Difference]: Finished difference. Result has 427 places, 1291 transitions, 23971 flow [2023-11-17 15:02:29,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=19277, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=552, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=23971, PETRI_PLACES=427, PETRI_TRANSITIONS=1291} [2023-11-17 15:02:29,441 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 393 predicate places. [2023-11-17 15:02:29,441 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 1291 transitions, 23971 flow [2023-11-17 15:02:29,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 135.58823529411765) internal successors, (2305), 17 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:29,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:02:29,441 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2023-11-17 15:02:29,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-17 15:02:29,647 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,SelfDestructingSolverStorable15 [2023-11-17 15:02:29,647 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:02:29,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:02:29,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1321579779, now seen corresponding path program 3 times [2023-11-17 15:02:29,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:02:29,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413079298] [2023-11-17 15:02:29,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:02:29,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:02:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:02:29,788 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 56 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:02:29,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:02:29,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413079298] [2023-11-17 15:02:29,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413079298] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:02:29,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933029791] [2023-11-17 15:02:29,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:02:29,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:02:29,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:02:29,793 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) [2023-11-17 15:02:29,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 15:02:29,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-17 15:02:29,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:02:29,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 15:02:29,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:02:30,043 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:02:30,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:02:30,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933029791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:02:30,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:02:30,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-11-17 15:02:30,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146069955] [2023-11-17 15:02:30,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:02:30,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 15:02:30,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:02:30,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 15:02:30,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:02:30,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 312 [2023-11-17 15:02:30,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 1291 transitions, 23971 flow. Second operand has 8 states, 8 states have (on average 149.125) internal successors, (1193), 8 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:30,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:02:30,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 312 [2023-11-17 15:02:30,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:02:40,527 INFO L124 PetriNetUnfolderBase]: 13910/27041 cut-off events. [2023-11-17 15:02:40,528 INFO L125 PetriNetUnfolderBase]: For 205454/205504 co-relation queries the response was YES. [2023-11-17 15:02:40,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170938 conditions, 27041 events. 13910/27041 cut-off events. For 205454/205504 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 204981 event pairs, 3260 based on Foata normal form. 507/27518 useless extension candidates. Maximal degree in co-relation 156895. Up to 13902 conditions per place. [2023-11-17 15:02:41,045 INFO L140 encePairwiseOnDemand]: 308/312 looper letters, 1258 selfloop transitions, 11 changer transitions 836/2120 dead transitions. [2023-11-17 15:02:41,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 2120 transitions, 42895 flow [2023-11-17 15:02:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:02:41,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:02:41,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1288 transitions. [2023-11-17 15:02:41,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160256410256411 [2023-11-17 15:02:41,049 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1288 transitions. [2023-11-17 15:02:41,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1288 transitions. [2023-11-17 15:02:41,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:02:41,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1288 transitions. [2023-11-17 15:02:41,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 161.0) internal successors, (1288), 8 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:41,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 312.0) internal successors, (2808), 9 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:41,053 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 312.0) internal successors, (2808), 9 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:41,053 INFO L175 Difference]: Start difference. First operand has 427 places, 1291 transitions, 23971 flow. Second operand 8 states and 1288 transitions. [2023-11-17 15:02:41,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 2120 transitions, 42895 flow [2023-11-17 15:02:43,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 2120 transitions, 41008 flow, removed 396 selfloop flow, removed 10 redundant places. [2023-11-17 15:02:43,093 INFO L231 Difference]: Finished difference. Result has 425 places, 931 transitions, 15474 flow [2023-11-17 15:02:43,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=19034, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15474, PETRI_PLACES=425, PETRI_TRANSITIONS=931} [2023-11-17 15:02:43,094 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 391 predicate places. [2023-11-17 15:02:43,094 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 931 transitions, 15474 flow [2023-11-17 15:02:43,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 149.125) internal successors, (1193), 8 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:43,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:02:43,095 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:02:43,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 15:02:43,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-17 15:02:43,296 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:02:43,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:02:43,296 INFO L85 PathProgramCache]: Analyzing trace with hash 24345183, now seen corresponding path program 3 times [2023-11-17 15:02:43,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:02:43,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330098993] [2023-11-17 15:02:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:02:43,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:02:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:02:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:02:43,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:02:43,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330098993] [2023-11-17 15:02:43,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330098993] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:02:43,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266128281] [2023-11-17 15:02:43,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:02:43,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:02:43,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:02:43,527 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:02:43,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-17 15:02:43,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-17 15:02:43,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:02:43,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 15:02:43,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:02:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 15:02:43,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:02:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 15:02:43,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266128281] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:02:43,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:02:43,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 15 [2023-11-17 15:02:43,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651819347] [2023-11-17 15:02:43,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:02:43,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 15:02:43,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:02:43,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 15:02:43,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:02:43,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 312 [2023-11-17 15:02:43,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 931 transitions, 15474 flow. Second operand has 16 states, 16 states have (on average 129.625) internal successors, (2074), 16 states have internal predecessors, (2074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:43,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:02:43,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 312 [2023-11-17 15:02:43,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:02:51,287 INFO L124 PetriNetUnfolderBase]: 10852/21017 cut-off events. [2023-11-17 15:02:51,287 INFO L125 PetriNetUnfolderBase]: For 164712/164712 co-relation queries the response was YES. [2023-11-17 15:02:51,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133034 conditions, 21017 events. 10852/21017 cut-off events. For 164712/164712 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 154281 event pairs, 2512 based on Foata normal form. 13/21030 useless extension candidates. Maximal degree in co-relation 123441. Up to 8064 conditions per place. [2023-11-17 15:02:51,657 INFO L140 encePairwiseOnDemand]: 302/312 looper letters, 558 selfloop transitions, 234 changer transitions 350/1142 dead transitions. [2023-11-17 15:02:51,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 1142 transitions, 19920 flow [2023-11-17 15:02:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 15:02:51,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 15:02:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2182 transitions. [2023-11-17 15:02:51,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.437099358974359 [2023-11-17 15:02:51,660 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2182 transitions. [2023-11-17 15:02:51,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2182 transitions. [2023-11-17 15:02:51,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:02:51,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2182 transitions. [2023-11-17 15:02:51,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 136.375) internal successors, (2182), 16 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:51,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 312.0) internal successors, (5304), 17 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:51,667 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 312.0) internal successors, (5304), 17 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:51,667 INFO L175 Difference]: Start difference. First operand has 425 places, 931 transitions, 15474 flow. Second operand 16 states and 2182 transitions. [2023-11-17 15:02:51,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 1142 transitions, 19920 flow [2023-11-17 15:02:52,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 1142 transitions, 18997 flow, removed 44 selfloop flow, removed 12 redundant places. [2023-11-17 15:02:52,944 INFO L231 Difference]: Finished difference. Result has 428 places, 681 transitions, 10879 flow [2023-11-17 15:02:52,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=14484, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=918, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10879, PETRI_PLACES=428, PETRI_TRANSITIONS=681} [2023-11-17 15:02:52,945 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 394 predicate places. [2023-11-17 15:02:52,945 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 681 transitions, 10879 flow [2023-11-17 15:02:52,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 129.625) internal successors, (2074), 16 states have internal predecessors, (2074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:52,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:02:52,946 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:02:52,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-17 15:02:53,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-17 15:02:53,151 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:02:53,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:02:53,152 INFO L85 PathProgramCache]: Analyzing trace with hash -908683150, now seen corresponding path program 3 times [2023-11-17 15:02:53,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:02:53,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249334108] [2023-11-17 15:02:53,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:02:53,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:02:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:02:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:02:54,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:02:54,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249334108] [2023-11-17 15:02:54,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249334108] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:02:54,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448973822] [2023-11-17 15:02:54,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:02:54,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:02:54,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:02:54,541 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:02:54,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-17 15:02:54,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 15:02:54,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:02:54,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 85 conjunts are in the unsatisfiable core [2023-11-17 15:02:54,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:02:54,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 15:02:55,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:02:55,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-17 15:02:55,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:02:55,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-17 15:02:55,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-11-17 15:02:55,951 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:02:55,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:02:57,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-11-17 15:02:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:02:57,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448973822] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:02:57,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:02:57,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 23] total 72 [2023-11-17 15:02:57,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865430139] [2023-11-17 15:02:57,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:02:57,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-11-17 15:02:57,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:02:57,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-11-17 15:02:57,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=4962, Unknown=0, NotChecked=0, Total=5256 [2023-11-17 15:02:57,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 312 [2023-11-17 15:02:57,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 681 transitions, 10879 flow. Second operand has 73 states, 73 states have (on average 92.0958904109589) internal successors, (6723), 73 states have internal predecessors, (6723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:57,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:02:57,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 312 [2023-11-17 15:02:57,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:16,496 INFO L124 PetriNetUnfolderBase]: 8449/17695 cut-off events. [2023-11-17 15:03:16,496 INFO L125 PetriNetUnfolderBase]: For 109857/109857 co-relation queries the response was YES. [2023-11-17 15:03:16,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111477 conditions, 17695 events. 8449/17695 cut-off events. For 109857/109857 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 136108 event pairs, 916 based on Foata normal form. 52/17747 useless extension candidates. Maximal degree in co-relation 97435. Up to 7667 conditions per place. [2023-11-17 15:03:16,764 INFO L140 encePairwiseOnDemand]: 295/312 looper letters, 465 selfloop transitions, 838 changer transitions 434/1737 dead transitions. [2023-11-17 15:03:16,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 1737 transitions, 26223 flow [2023-11-17 15:03:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-11-17 15:03:16,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2023-11-17 15:03:16,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 10090 transitions. [2023-11-17 15:03:16,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30509192065795837 [2023-11-17 15:03:16,773 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 10090 transitions. [2023-11-17 15:03:16,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 10090 transitions. [2023-11-17 15:03:16,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:16,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 10090 transitions. [2023-11-17 15:03:16,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 95.18867924528301) internal successors, (10090), 106 states have internal predecessors, (10090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:16,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 312.0) internal successors, (33384), 107 states have internal predecessors, (33384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:16,819 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 312.0) internal successors, (33384), 107 states have internal predecessors, (33384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:16,819 INFO L175 Difference]: Start difference. First operand has 428 places, 681 transitions, 10879 flow. Second operand 106 states and 10090 transitions. [2023-11-17 15:03:16,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 1737 transitions, 26223 flow [2023-11-17 15:03:17,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 1737 transitions, 23797 flow, removed 895 selfloop flow, removed 24 redundant places. [2023-11-17 15:03:17,999 INFO L231 Difference]: Finished difference. Result has 525 places, 952 transitions, 15052 flow [2023-11-17 15:03:18,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=9785, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=510, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=15052, PETRI_PLACES=525, PETRI_TRANSITIONS=952} [2023-11-17 15:03:18,001 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 491 predicate places. [2023-11-17 15:03:18,001 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 952 transitions, 15052 flow [2023-11-17 15:03:18,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 92.0958904109589) internal successors, (6723), 73 states have internal predecessors, (6723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:18,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:18,003 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:18,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-17 15:03:18,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:18,208 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:03:18,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:18,209 INFO L85 PathProgramCache]: Analyzing trace with hash 81634412, now seen corresponding path program 4 times [2023-11-17 15:03:18,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:18,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99789106] [2023-11-17 15:03:18,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:18,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:19,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:19,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99789106] [2023-11-17 15:03:19,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99789106] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:19,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573590259] [2023-11-17 15:03:19,729 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:03:19,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:19,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:19,730 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:19,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-17 15:03:19,883 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:03:19,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:03:19,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 102 conjunts are in the unsatisfiable core [2023-11-17 15:03:19,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:19,898 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-17 15:03:19,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-17 15:03:20,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 15:03:20,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-17 15:03:20,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:03:20,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-17 15:03:20,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:03:20,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-17 15:03:21,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-11-17 15:03:21,141 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:21,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:03:22,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:03:22,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-17 15:03:22,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:03:22,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-11-17 15:03:22,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-11-17 15:03:22,648 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:22,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573590259] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:03:22,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:03:22,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 24] total 75 [2023-11-17 15:03:22,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131087640] [2023-11-17 15:03:22,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:03:22,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-11-17 15:03:22,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:22,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-11-17 15:03:22,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=5525, Unknown=6, NotChecked=0, Total=5852 [2023-11-17 15:03:22,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 312 [2023-11-17 15:03:22,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 952 transitions, 15052 flow. Second operand has 77 states, 77 states have (on average 86.94805194805195) internal successors, (6695), 77 states have internal predecessors, (6695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:22,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:22,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 312 [2023-11-17 15:03:22,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:41,951 INFO L124 PetriNetUnfolderBase]: 7141/14938 cut-off events. [2023-11-17 15:03:41,951 INFO L125 PetriNetUnfolderBase]: For 79311/79311 co-relation queries the response was YES. [2023-11-17 15:03:42,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93311 conditions, 14938 events. 7141/14938 cut-off events. For 79311/79311 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 109864 event pairs, 522 based on Foata normal form. 44/14982 useless extension candidates. Maximal degree in co-relation 92960. Up to 6422 conditions per place. [2023-11-17 15:03:42,107 INFO L140 encePairwiseOnDemand]: 297/312 looper letters, 327 selfloop transitions, 737 changer transitions 543/1607 dead transitions. [2023-11-17 15:03:42,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 1607 transitions, 24735 flow [2023-11-17 15:03:42,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-11-17 15:03:42,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2023-11-17 15:03:42,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 8721 transitions. [2023-11-17 15:03:42,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28816415543219664 [2023-11-17 15:03:42,121 INFO L72 ComplementDD]: Start complementDD. Operand 97 states and 8721 transitions. [2023-11-17 15:03:42,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 8721 transitions. [2023-11-17 15:03:42,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:42,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 97 states and 8721 transitions. [2023-11-17 15:03:42,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 98 states, 97 states have (on average 89.90721649484536) internal successors, (8721), 97 states have internal predecessors, (8721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:42,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 98 states, 98 states have (on average 312.0) internal successors, (30576), 98 states have internal predecessors, (30576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:42,171 INFO L81 ComplementDD]: Finished complementDD. Result has 98 states, 98 states have (on average 312.0) internal successors, (30576), 98 states have internal predecessors, (30576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:42,171 INFO L175 Difference]: Start difference. First operand has 525 places, 952 transitions, 15052 flow. Second operand 97 states and 8721 transitions. [2023-11-17 15:03:42,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 1607 transitions, 24735 flow [2023-11-17 15:03:42,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 1607 transitions, 23691 flow, removed 133 selfloop flow, removed 78 redundant places. [2023-11-17 15:03:42,985 INFO L231 Difference]: Finished difference. Result has 553 places, 814 transitions, 13446 flow [2023-11-17 15:03:42,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=14155, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=952, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=683, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=13446, PETRI_PLACES=553, PETRI_TRANSITIONS=814} [2023-11-17 15:03:42,986 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 519 predicate places. [2023-11-17 15:03:42,986 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 814 transitions, 13446 flow [2023-11-17 15:03:42,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 86.94805194805195) internal successors, (6695), 77 states have internal predecessors, (6695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:42,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:42,988 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:42,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-17 15:03:43,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-11-17 15:03:43,195 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:03:43,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:43,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2007614892, now seen corresponding path program 5 times [2023-11-17 15:03:43,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:43,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663525065] [2023-11-17 15:03:43,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:43,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:45,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:45,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663525065] [2023-11-17 15:03:45,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663525065] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:45,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446029328] [2023-11-17 15:03:45,165 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:03:45,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:45,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:45,166 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:45,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-17 15:03:45,353 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 15:03:45,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:03:45,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 120 conjunts are in the unsatisfiable core [2023-11-17 15:03:45,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:45,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 15:03:45,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-11-17 15:03:45,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:03:45,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-17 15:03:46,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-11-17 15:03:46,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-11-17 15:03:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:47,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:03:48,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-11-17 15:03:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:48,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446029328] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:03:48,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:03:48,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 30, 28] total 91 [2023-11-17 15:03:48,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127027322] [2023-11-17 15:03:48,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:03:48,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2023-11-17 15:03:48,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:48,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2023-11-17 15:03:48,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=671, Invalid=7701, Unknown=0, NotChecked=0, Total=8372 [2023-11-17 15:03:48,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 312 [2023-11-17 15:03:48,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 814 transitions, 13446 flow. Second operand has 92 states, 92 states have (on average 92.15217391304348) internal successors, (8478), 92 states have internal predecessors, (8478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:48,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:48,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 312 [2023-11-17 15:03:48,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:16,600 INFO L124 PetriNetUnfolderBase]: 4688/9945 cut-off events. [2023-11-17 15:04:16,600 INFO L125 PetriNetUnfolderBase]: For 55749/55749 co-relation queries the response was YES. [2023-11-17 15:04:16,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64528 conditions, 9945 events. 4688/9945 cut-off events. For 55749/55749 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 68096 event pairs, 419 based on Foata normal form. 22/9967 useless extension candidates. Maximal degree in co-relation 64440. Up to 3962 conditions per place. [2023-11-17 15:04:16,691 INFO L140 encePairwiseOnDemand]: 295/312 looper letters, 655 selfloop transitions, 674 changer transitions 477/1806 dead transitions. [2023-11-17 15:04:16,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 1806 transitions, 26226 flow [2023-11-17 15:04:16,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2023-11-17 15:04:16,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2023-11-17 15:04:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 20522 transitions. [2023-11-17 15:04:16,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3031135531135531 [2023-11-17 15:04:16,710 INFO L72 ComplementDD]: Start complementDD. Operand 217 states and 20522 transitions. [2023-11-17 15:04:16,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 217 states and 20522 transitions. [2023-11-17 15:04:16,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:16,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 217 states and 20522 transitions. [2023-11-17 15:04:16,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 218 states, 217 states have (on average 94.57142857142857) internal successors, (20522), 217 states have internal predecessors, (20522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:16,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 218 states, 218 states have (on average 312.0) internal successors, (68016), 218 states have internal predecessors, (68016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:16,803 INFO L81 ComplementDD]: Finished complementDD. Result has 218 states, 218 states have (on average 312.0) internal successors, (68016), 218 states have internal predecessors, (68016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:16,803 INFO L175 Difference]: Start difference. First operand has 553 places, 814 transitions, 13446 flow. Second operand 217 states and 20522 transitions. [2023-11-17 15:04:16,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 753 places, 1806 transitions, 26226 flow [2023-11-17 15:04:17,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 1806 transitions, 23741 flow, removed 144 selfloop flow, removed 109 redundant places. [2023-11-17 15:04:17,352 INFO L231 Difference]: Finished difference. Result has 659 places, 769 transitions, 12187 flow [2023-11-17 15:04:17,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=11460, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=814, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=599, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=217, PETRI_FLOW=12187, PETRI_PLACES=659, PETRI_TRANSITIONS=769} [2023-11-17 15:04:17,353 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 625 predicate places. [2023-11-17 15:04:17,353 INFO L495 AbstractCegarLoop]: Abstraction has has 659 places, 769 transitions, 12187 flow [2023-11-17 15:04:17,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 92.15217391304348) internal successors, (8478), 92 states have internal predecessors, (8478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:17,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:17,355 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:17,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-17 15:04:17,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:17,555 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:04:17,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:17,556 INFO L85 PathProgramCache]: Analyzing trace with hash 625643712, now seen corresponding path program 6 times [2023-11-17 15:04:17,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:17,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022190508] [2023-11-17 15:04:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:17,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:19,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:19,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022190508] [2023-11-17 15:04:19,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022190508] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:04:19,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854098051] [2023-11-17 15:04:19,723 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:04:19,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:19,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:19,725 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:04:19,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-17 15:04:20,058 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-17 15:04:20,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:04:20,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 120 conjunts are in the unsatisfiable core [2023-11-17 15:04:20,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:04:20,084 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-11-17 15:04:20,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-11-17 15:04:20,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 15:04:20,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-17 15:04:20,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-11-17 15:04:20,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:04:20,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-17 15:04:21,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:04:21,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-17 15:04:21,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-11-17 15:04:21,766 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:21,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:04:24,060 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:04:24,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-17 15:04:24,067 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:04:24,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-11-17 15:04:24,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-11-17 15:04:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:24,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854098051] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:04:24,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:04:24,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 30, 33] total 96 [2023-11-17 15:04:24,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416902262] [2023-11-17 15:04:24,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:04:24,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-11-17 15:04:24,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:24,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-11-17 15:04:24,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=8900, Unknown=0, NotChecked=0, Total=9506 [2023-11-17 15:04:24,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 312 [2023-11-17 15:04:24,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 659 places, 769 transitions, 12187 flow. Second operand has 98 states, 98 states have (on average 86.98979591836735) internal successors, (8525), 98 states have internal predecessors, (8525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:24,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:24,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 312 [2023-11-17 15:04:24,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:43,509 INFO L124 PetriNetUnfolderBase]: 4475/9332 cut-off events. [2023-11-17 15:04:43,510 INFO L125 PetriNetUnfolderBase]: For 51621/51621 co-relation queries the response was YES. [2023-11-17 15:04:43,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59505 conditions, 9332 events. 4475/9332 cut-off events. For 51621/51621 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 61203 event pairs, 292 based on Foata normal form. 22/9354 useless extension candidates. Maximal degree in co-relation 59422. Up to 3207 conditions per place. [2023-11-17 15:04:43,576 INFO L140 encePairwiseOnDemand]: 292/312 looper letters, 302 selfloop transitions, 323 changer transitions 735/1360 dead transitions. [2023-11-17 15:04:43,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 1360 transitions, 20135 flow [2023-11-17 15:04:43,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-11-17 15:04:43,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2023-11-17 15:04:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 9316 transitions. [2023-11-17 15:04:43,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28989295494149864 [2023-11-17 15:04:43,583 INFO L72 ComplementDD]: Start complementDD. Operand 103 states and 9316 transitions. [2023-11-17 15:04:43,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 9316 transitions. [2023-11-17 15:04:43,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:43,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 103 states and 9316 transitions. [2023-11-17 15:04:43,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 104 states, 103 states have (on average 90.44660194174757) internal successors, (9316), 103 states have internal predecessors, (9316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:43,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 104 states, 104 states have (on average 312.0) internal successors, (32448), 104 states have internal predecessors, (32448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:43,621 INFO L81 ComplementDD]: Finished complementDD. Result has 104 states, 104 states have (on average 312.0) internal successors, (32448), 104 states have internal predecessors, (32448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:43,622 INFO L175 Difference]: Start difference. First operand has 659 places, 769 transitions, 12187 flow. Second operand 103 states and 9316 transitions. [2023-11-17 15:04:43,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 1360 transitions, 20135 flow [2023-11-17 15:04:44,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 1360 transitions, 19375 flow, removed 53 selfloop flow, removed 85 redundant places. [2023-11-17 15:04:44,020 INFO L231 Difference]: Finished difference. Result has 664 places, 407 transitions, 6512 flow [2023-11-17 15:04:44,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=11465, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=103, PETRI_FLOW=6512, PETRI_PLACES=664, PETRI_TRANSITIONS=407} [2023-11-17 15:04:44,021 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 630 predicate places. [2023-11-17 15:04:44,021 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 407 transitions, 6512 flow [2023-11-17 15:04:44,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 86.98979591836735) internal successors, (8525), 98 states have internal predecessors, (8525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:44,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:44,023 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:44,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-17 15:04:44,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:44,232 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:04:44,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:44,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1488670381, now seen corresponding path program 7 times [2023-11-17 15:04:44,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:44,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9507877] [2023-11-17 15:04:44,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:44,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:47,006 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:47,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:47,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9507877] [2023-11-17 15:04:47,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9507877] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:04:47,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590769321] [2023-11-17 15:04:47,007 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:04:47,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:47,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:47,008 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:04:47,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-17 15:04:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:47,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 115 conjunts are in the unsatisfiable core [2023-11-17 15:04:47,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:04:47,210 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-11-17 15:04:47,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-11-17 15:04:47,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 15:04:47,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:04:47,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-17 15:04:48,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:04:48,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-17 15:04:48,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:04:48,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-17 15:04:48,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-17 15:04:49,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-11-17 15:04:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:49,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:04:50,384 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1240 (Array Int Int))) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1240) |c_~#arr~0.base|) (+ (- 16) |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296)))) is different from false [2023-11-17 15:04:50,390 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1240 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1240) |c_~#arr~0.base|) (+ (* |c_t1Thread1of1ForFork1_inc_top_#t~post31#1| 4) |c_~#arr~0.offset| (- 12))) 4294967296) 4294967294))) is different from false [2023-11-17 15:05:07,987 WARN L854 $PredicateComparison]: unable to prove that (forall ((|t1Thread1of1ForFork1_push_~x#1| Int) (|v_t1Thread1of1ForFork1_get_top_#res#1_85| Int) (|v_t1Thread1of1ForFork1_push_~stack#1.offset_189| Int) (v_ArrVal_1240 (Array Int Int))) (or (< |v_t1Thread1of1ForFork1_push_~stack#1.offset_189| |c_~#arr~0.offset|) (< |v_t1Thread1of1ForFork1_get_top_#res#1_85| (+ 2 |c_t1Thread1of1ForFork1_inc_top_#t~post31#1|)) (not (= (mod (select (select (store (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ (* |v_t1Thread1of1ForFork1_get_top_#res#1_85| 4) |v_t1Thread1of1ForFork1_push_~stack#1.offset_189|) |t1Thread1of1ForFork1_push_~x#1|)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1240) |c_~#arr~0.base|) (+ (* |c_t1Thread1of1ForFork1_inc_top_#t~post31#1| 4) |c_~#arr~0.offset| (- 4))) 4294967296) 4294967294)))) is different from false [2023-11-17 15:05:35,379 INFO L349 Elim1Store]: treesize reduction 95, result has 47.2 percent of original size [2023-11-17 15:05:35,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 102 [2023-11-17 15:05:35,387 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 15:05:35,401 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:05:35,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 123 [2023-11-17 15:05:35,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-11-17 15:05:55,894 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 10 proven. 79 refuted. 17 times theorem prover too weak. 1 trivial. 11 not checked. [2023-11-17 15:05:55,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590769321] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:05:55,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:05:55,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 35, 34] total 107 [2023-11-17 15:05:55,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753099733] [2023-11-17 15:05:55,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:05:55,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2023-11-17 15:05:55,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:05:55,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2023-11-17 15:05:55,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=10613, Unknown=125, NotChecked=630, Total=11772 [2023-11-17 15:05:55,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 312 [2023-11-17 15:05:55,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 407 transitions, 6512 flow. Second operand has 109 states, 109 states have (on average 87.0091743119266) internal successors, (9484), 109 states have internal predecessors, (9484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:05:55,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:05:55,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 312 [2023-11-17 15:05:55,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:06:26,888 INFO L124 PetriNetUnfolderBase]: 2368/4772 cut-off events. [2023-11-17 15:06:26,889 INFO L125 PetriNetUnfolderBase]: For 37549/37549 co-relation queries the response was YES. [2023-11-17 15:06:26,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33598 conditions, 4772 events. 2368/4772 cut-off events. For 37549/37549 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 24988 event pairs, 102 based on Foata normal form. 6/4778 useless extension candidates. Maximal degree in co-relation 33481. Up to 1691 conditions per place. [2023-11-17 15:06:26,940 INFO L140 encePairwiseOnDemand]: 297/312 looper letters, 283 selfloop transitions, 350 changer transitions 4/637 dead transitions. [2023-11-17 15:06:26,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 637 transitions, 9786 flow [2023-11-17 15:06:26,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-17 15:06:26,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-11-17 15:06:26,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 5516 transitions. [2023-11-17 15:06:26,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2898276586801177 [2023-11-17 15:06:26,944 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 5516 transitions. [2023-11-17 15:06:26,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 5516 transitions. [2023-11-17 15:06:26,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:06:26,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 5516 transitions. [2023-11-17 15:06:26,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 90.42622950819673) internal successors, (5516), 61 states have internal predecessors, (5516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:06:26,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 312.0) internal successors, (19344), 62 states have internal predecessors, (19344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:06:26,959 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 312.0) internal successors, (19344), 62 states have internal predecessors, (19344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:06:26,959 INFO L175 Difference]: Start difference. First operand has 664 places, 407 transitions, 6512 flow. Second operand 61 states and 5516 transitions. [2023-11-17 15:06:26,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 637 transitions, 9786 flow [2023-11-17 15:06:27,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 637 transitions, 7143 flow, removed 314 selfloop flow, removed 161 redundant places. [2023-11-17 15:06:27,147 INFO L231 Difference]: Finished difference. Result has 414 places, 415 transitions, 4984 flow [2023-11-17 15:06:27,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=4127, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=343, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=4984, PETRI_PLACES=414, PETRI_TRANSITIONS=415} [2023-11-17 15:06:27,149 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 380 predicate places. [2023-11-17 15:06:27,149 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 415 transitions, 4984 flow [2023-11-17 15:06:27,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 87.0091743119266) internal successors, (9484), 109 states have internal predecessors, (9484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:06:27,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:06:27,151 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:06:27,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-17 15:06:27,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-17 15:06:27,358 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:06:27,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:06:27,359 INFO L85 PathProgramCache]: Analyzing trace with hash 330166602, now seen corresponding path program 8 times [2023-11-17 15:06:27,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:06:27,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129703402] [2023-11-17 15:06:27,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:06:27,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:06:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:06:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 53 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:06:29,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:06:29,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129703402] [2023-11-17 15:06:29,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129703402] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:06:29,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259487962] [2023-11-17 15:06:29,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:06:29,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:06:29,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:06:29,957 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:06:29,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-17 15:06:30,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:06:30,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:06:30,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 121 conjunts are in the unsatisfiable core [2023-11-17 15:06:30,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:06:30,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 15:06:30,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-11-17 15:06:30,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:06:30,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-17 15:06:31,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:06:31,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-17 15:06:31,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:06:31,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-17 15:06:32,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-11-17 15:06:32,527 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:06:32,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:06:35,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-11-17 15:06:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 4 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:06:35,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259487962] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:06:35,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:06:35,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 33, 37] total 110 [2023-11-17 15:06:35,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962279842] [2023-11-17 15:06:35,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:06:35,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2023-11-17 15:06:35,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:06:35,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2023-11-17 15:06:35,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=11642, Unknown=0, NotChecked=0, Total=12210 [2023-11-17 15:06:36,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 312 [2023-11-17 15:06:36,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 415 transitions, 4984 flow. Second operand has 111 states, 111 states have (on average 92.1891891891892) internal successors, (10233), 111 states have internal predecessors, (10233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:06:36,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:06:36,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 312 [2023-11-17 15:06:36,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:06:50,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:07:01,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:07:03,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:07:14,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:07:16,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:07:18,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:07:21,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:07:23,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 15:07:35,143 INFO L124 PetriNetUnfolderBase]: 2684/5411 cut-off events. [2023-11-17 15:07:35,143 INFO L125 PetriNetUnfolderBase]: For 26995/26995 co-relation queries the response was YES. [2023-11-17 15:07:35,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32134 conditions, 5411 events. 2684/5411 cut-off events. For 26995/26995 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 29348 event pairs, 327 based on Foata normal form. 12/5423 useless extension candidates. Maximal degree in co-relation 32047. Up to 2008 conditions per place. [2023-11-17 15:07:35,194 INFO L140 encePairwiseOnDemand]: 296/312 looper letters, 354 selfloop transitions, 289 changer transitions 323/966 dead transitions. [2023-11-17 15:07:35,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 966 transitions, 11192 flow [2023-11-17 15:07:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-11-17 15:07:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2023-11-17 15:07:35,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 12000 transitions. [2023-11-17 15:07:35,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3052503052503053 [2023-11-17 15:07:35,202 INFO L72 ComplementDD]: Start complementDD. Operand 126 states and 12000 transitions. [2023-11-17 15:07:35,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 12000 transitions. [2023-11-17 15:07:35,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:07:35,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 126 states and 12000 transitions. [2023-11-17 15:07:35,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 127 states, 126 states have (on average 95.23809523809524) internal successors, (12000), 126 states have internal predecessors, (12000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:07:35,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 127 states, 127 states have (on average 312.0) internal successors, (39624), 127 states have internal predecessors, (39624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:07:35,249 INFO L81 ComplementDD]: Finished complementDD. Result has 127 states, 127 states have (on average 312.0) internal successors, (39624), 127 states have internal predecessors, (39624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:07:35,250 INFO L175 Difference]: Start difference. First operand has 414 places, 415 transitions, 4984 flow. Second operand 126 states and 12000 transitions. [2023-11-17 15:07:35,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 966 transitions, 11192 flow [2023-11-17 15:07:35,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 966 transitions, 10303 flow, removed 56 selfloop flow, removed 54 redundant places. [2023-11-17 15:07:35,409 INFO L231 Difference]: Finished difference. Result has 493 places, 389 transitions, 4581 flow [2023-11-17 15:07:35,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=4174, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=126, PETRI_FLOW=4581, PETRI_PLACES=493, PETRI_TRANSITIONS=389} [2023-11-17 15:07:35,410 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 459 predicate places. [2023-11-17 15:07:35,410 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 389 transitions, 4581 flow [2023-11-17 15:07:35,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 92.1891891891892) internal successors, (10233), 111 states have internal predecessors, (10233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:07:35,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:07:35,412 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:07:35,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-17 15:07:35,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:07:35,612 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:07:35,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:07:35,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1184294446, now seen corresponding path program 9 times [2023-11-17 15:07:35,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:07:35,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476052714] [2023-11-17 15:07:35,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:07:35,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:07:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:07:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 53 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:07:38,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:07:38,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476052714] [2023-11-17 15:07:38,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476052714] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:07:38,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214121425] [2023-11-17 15:07:38,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:07:38,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:07:38,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:07:38,298 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:07:38,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-17 15:07:38,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-17 15:07:38,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:07:38,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 128 conjunts are in the unsatisfiable core [2023-11-17 15:07:38,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:07:38,679 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-11-17 15:07:38,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-11-17 15:07:38,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 15:07:38,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-17 15:07:39,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-11-17 15:07:39,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:07:39,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-17 15:07:39,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:07:39,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-17 15:07:40,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:07:40,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2023-11-17 15:07:40,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-11-17 15:07:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:07:41,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:07:44,498 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:07:44,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-17 15:07:44,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:07:44,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-11-17 15:07:44,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-11-17 15:07:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:07:44,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214121425] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:07:44,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:07:44,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 34, 38] total 112 [2023-11-17 15:07:44,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097345284] [2023-11-17 15:07:44,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:07:44,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2023-11-17 15:07:44,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:07:44,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2023-11-17 15:07:44,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=12275, Unknown=2, NotChecked=0, Total=12882 [2023-11-17 15:07:44,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 312 [2023-11-17 15:07:44,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 389 transitions, 4581 flow. Second operand has 114 states, 114 states have (on average 87.10526315789474) internal successors, (9930), 114 states have internal predecessors, (9930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:07:44,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:07:44,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 312 [2023-11-17 15:07:44,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:08:06,212 INFO L124 PetriNetUnfolderBase]: 2101/4257 cut-off events. [2023-11-17 15:08:06,212 INFO L125 PetriNetUnfolderBase]: For 20491/20491 co-relation queries the response was YES. [2023-11-17 15:08:06,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24890 conditions, 4257 events. 2101/4257 cut-off events. For 20491/20491 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 22053 event pairs, 95 based on Foata normal form. 12/4269 useless extension candidates. Maximal degree in co-relation 24797. Up to 1595 conditions per place. [2023-11-17 15:08:06,238 INFO L140 encePairwiseOnDemand]: 293/312 looper letters, 0 selfloop transitions, 0 changer transitions 640/640 dead transitions. [2023-11-17 15:08:06,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 640 transitions, 7690 flow [2023-11-17 15:08:06,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-11-17 15:08:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-11-17 15:08:06,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 6216 transitions. [2023-11-17 15:08:06,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2887402452619844 [2023-11-17 15:08:06,242 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 6216 transitions. [2023-11-17 15:08:06,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 6216 transitions. [2023-11-17 15:08:06,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:08:06,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 6216 transitions. [2023-11-17 15:08:06,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 90.08695652173913) internal successors, (6216), 69 states have internal predecessors, (6216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:08:06,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 312.0) internal successors, (21840), 70 states have internal predecessors, (21840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:08:06,260 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 312.0) internal successors, (21840), 70 states have internal predecessors, (21840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:08:06,260 INFO L175 Difference]: Start difference. First operand has 493 places, 389 transitions, 4581 flow. Second operand 69 states and 6216 transitions. [2023-11-17 15:08:06,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 640 transitions, 7690 flow [2023-11-17 15:08:06,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 640 transitions, 6956 flow, removed 11 selfloop flow, removed 98 redundant places. [2023-11-17 15:08:06,362 INFO L231 Difference]: Finished difference. Result has 421 places, 0 transitions, 0 flow [2023-11-17 15:08:06,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=3832, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=0, PETRI_PLACES=421, PETRI_TRANSITIONS=0} [2023-11-17 15:08:06,363 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 387 predicate places. [2023-11-17 15:08:06,363 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 0 transitions, 0 flow [2023-11-17 15:08:06,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 87.10526315789474) internal successors, (9930), 114 states have internal predecessors, (9930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:08:06,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-17 15:08:06,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2023-11-17 15:08:06,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-11-17 15:08:06,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-17 15:08:06,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-17 15:08:06,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-17 15:08:06,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-17 15:08:06,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:08:06,575 INFO L445 BasicCegarLoop]: Path program histogram: [9, 6, 3, 3, 1, 1, 1, 1] [2023-11-17 15:08:06,578 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:08:06,578 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:08:06,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:08:06 BasicIcfg [2023-11-17 15:08:06,580 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:08:06,581 INFO L158 Benchmark]: Toolchain (without parser) took 423573.15ms. Allocated memory was 307.2MB in the beginning and 4.9GB in the end (delta: 4.6GB). Free memory was 258.1MB in the beginning and 3.2GB in the end (delta: -2.9GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-11-17 15:08:06,581 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 192.9MB. Free memory is still 148.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:08:06,581 INFO L158 Benchmark]: CACSL2BoogieTranslator took 637.71ms. Allocated memory is still 307.2MB. Free memory was 258.1MB in the beginning and 228.2MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2023-11-17 15:08:06,581 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.86ms. Allocated memory is still 307.2MB. Free memory was 228.2MB in the beginning and 225.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 15:08:06,581 INFO L158 Benchmark]: Boogie Preprocessor took 58.91ms. Allocated memory is still 307.2MB. Free memory was 225.6MB in the beginning and 224.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 15:08:06,581 INFO L158 Benchmark]: RCFGBuilder took 598.19ms. Allocated memory is still 307.2MB. Free memory was 224.0MB in the beginning and 204.6MB in the end (delta: 19.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 15:08:06,581 INFO L158 Benchmark]: TraceAbstraction took 422201.50ms. Allocated memory was 307.2MB in the beginning and 4.9GB in the end (delta: 4.6GB). Free memory was 203.5MB in the beginning and 3.2GB in the end (delta: -3.0GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-11-17 15:08:06,582 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 192.9MB. Free memory is still 148.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 637.71ms. Allocated memory is still 307.2MB. Free memory was 258.1MB in the beginning and 228.2MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 70.86ms. Allocated memory is still 307.2MB. Free memory was 228.2MB in the beginning and 225.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.91ms. Allocated memory is still 307.2MB. Free memory was 225.6MB in the beginning and 224.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 598.19ms. Allocated memory is still 307.2MB. Free memory was 224.0MB in the beginning and 204.6MB in the end (delta: 19.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 422201.50ms. Allocated memory was 307.2MB in the beginning and 4.9GB in the end (delta: 4.6GB). Free memory was 203.5MB in the beginning and 3.2GB in the end (delta: -3.0GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 150 PlacesBefore, 34 PlacesAfterwards, 153 TransitionsBefore, 32 TransitionsAfterwards, 7680 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 88 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 25 ConcurrentYvCompositions, 5 ChoiceCompositions, 147 TotalNumberOfCompositions, 10369 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7685, independent: 7497, independent conditional: 0, independent unconditional: 7497, dependent: 188, dependent conditional: 0, dependent unconditional: 188, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5631, independent: 5540, independent conditional: 0, independent unconditional: 5540, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5631, independent: 5520, independent conditional: 0, independent unconditional: 5520, dependent: 111, dependent conditional: 0, dependent unconditional: 111, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 111, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 242, independent: 46, independent conditional: 0, independent unconditional: 46, dependent: 196, dependent conditional: 0, dependent unconditional: 196, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7685, independent: 1957, independent conditional: 0, independent unconditional: 1957, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 5631, unknown conditional: 0, unknown unconditional: 5631] , Statistics on independence cache: Total cache size (in pairs): 253, Positive cache size: 226, Positive conditional cache size: 0, Positive unconditional cache size: 226, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 941]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 941]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 260 locations, 6 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: 422.1s, OverallIterations: 25, TraceHistogramMax: 6, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 284.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 249 mSolverCounterUnknown, 12649 SdHoareTripleChecker+Valid, 99.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12649 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 90.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1293 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 961 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119851 IncrementalHoareTripleChecker+Invalid, 122354 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 961 mSolverCounterUnsat, 2 mSDtfsCounter, 119851 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3258 GetRequests, 1185 SyntacticMatches, 42 SemanticMatches, 2031 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 109144 ImplicationChecksByTransitivity, 206.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23971occurred in iteration=16, InterpolantAutomatonStates: 1182, 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: 0.5s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 125.6s InterpolantComputationTime, 1766 NumberOfCodeBlocks, 1752 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 2492 ConstructedInterpolants, 107 QuantifiedInterpolants, 41895 SizeOfPredicates, 493 NumberOfNonLiveVariables, 6382 ConjunctsInSsa, 1160 ConjunctsInUnsatCore, 60 InterpolantComputations, 9 PerfectInterpolantSequences, 462/2819 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 15:08:06,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...