/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 --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:33:32,342 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:33:32,410 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 11:33:32,436 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:33:32,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:33:32,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:33:32,437 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:33:32,438 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:33:32,438 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:33:32,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:33:32,442 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:33:32,442 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:33:32,442 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:33:32,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:33:32,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:33:32,443 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:33:32,443 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:33:32,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:33:32,444 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:33:32,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:33:32,444 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:33:32,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:33:32,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:33:32,445 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:33:32,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:33:32,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:33:32,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:33:32,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:33:32,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:33:32,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:33:32,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:33:32,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:33:32,448 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:33:32,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:33:32,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:33:32,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:33:32,680 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:33:32,680 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:33:32,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-11-17 11:33:33,714 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:33:33,938 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:33:33,950 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-11-17 11:33:33,969 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7a20a540/efd923a98a99415f92fca51202907488/FLAGad169780b [2023-11-17 11:33:33,979 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7a20a540/efd923a98a99415f92fca51202907488 [2023-11-17 11:33:33,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:33:33,981 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:33:33,985 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:33:33,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:33:33,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:33:33,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:33:33" (1/1) ... [2023-11-17 11:33:33,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b20683f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:33:33, skipping insertion in model container [2023-11-17 11:33:33,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:33:33" (1/1) ... [2023-11-17 11:33:34,042 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:33:34,176 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-C-DAC/pthread-demo-datarace-1.i[820,833] [2023-11-17 11:33:34,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:33:34,479 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:33:34,488 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-C-DAC/pthread-demo-datarace-1.i[820,833] [2023-11-17 11:33:34,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:33:34,588 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:33:34,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:33:34 WrapperNode [2023-11-17 11:33:34,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:33:34,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:33:34,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:33:34,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:33:34,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:33:34" (1/1) ... [2023-11-17 11:33:34,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:33:34" (1/1) ... [2023-11-17 11:33:34,637 INFO L138 Inliner]: procedures = 365, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2023-11-17 11:33:34,637 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:33:34,638 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:33:34,638 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:33:34,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:33:34,644 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:33:34" (1/1) ... [2023-11-17 11:33:34,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:33:34" (1/1) ... [2023-11-17 11:33:34,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:33:34" (1/1) ... [2023-11-17 11:33:34,654 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:33:34" (1/1) ... [2023-11-17 11:33:34,657 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:33:34" (1/1) ... [2023-11-17 11:33:34,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:33:34" (1/1) ... [2023-11-17 11:33:34,660 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:33:34" (1/1) ... [2023-11-17 11:33:34,661 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:33:34" (1/1) ... [2023-11-17 11:33:34,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:33:34,663 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:33:34,663 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:33:34,663 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:33:34,664 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:33:34" (1/1) ... [2023-11-17 11:33:34,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:33:34,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:33:34,693 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 11:33:34,714 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 11:33:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:33:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:33:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 11:33:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:33:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:33:34,720 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 11:33:34,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:33:34,720 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2023-11-17 11:33:34,720 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2023-11-17 11:33:34,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:33:34,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:33:34,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:33:34,721 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 11:33:34,851 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:33:34,852 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:33:34,951 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:33:35,016 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:33:35,016 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 11:33:35,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:33:35 BoogieIcfgContainer [2023-11-17 11:33:35,017 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:33:35,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:33:35,018 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:33:35,023 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:33:35,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:33:33" (1/3) ... [2023-11-17 11:33:35,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5f92e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:33:35, skipping insertion in model container [2023-11-17 11:33:35,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:33:34" (2/3) ... [2023-11-17 11:33:35,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5f92e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:33:35, skipping insertion in model container [2023-11-17 11:33:35,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:33:35" (3/3) ... [2023-11-17 11:33:35,029 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2023-11-17 11:33:35,041 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:33:35,041 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:33:35,041 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:33:35,077 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-17 11:33:35,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 24 transitions, 55 flow [2023-11-17 11:33:35,132 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-11-17 11:33:35,132 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:33:35,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 23 events. 3/23 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2023-11-17 11:33:35,135 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 24 transitions, 55 flow [2023-11-17 11:33:35,139 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 20 transitions, 46 flow [2023-11-17 11:33:35,141 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:33:35,155 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 20 transitions, 46 flow [2023-11-17 11:33:35,159 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 20 transitions, 46 flow [2023-11-17 11:33:35,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 20 transitions, 46 flow [2023-11-17 11:33:35,166 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2023-11-17 11:33:35,167 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:33:35,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 20 events. 2/20 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2023-11-17 11:33:35,168 INFO L119 LiptonReduction]: Number of co-enabled transitions 98 [2023-11-17 11:33:35,372 INFO L134 LiptonReduction]: Checked pairs total: 198 [2023-11-17 11:33:35,372 INFO L136 LiptonReduction]: Total number of compositions: 6 [2023-11-17 11:33:35,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:33:35,387 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;@56a444f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:33:35,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-17 11:33:35,391 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:33:35,391 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-11-17 11:33:35,392 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:33:35,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:33:35,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:33:35,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:33:35,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:33:35,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1306512994, now seen corresponding path program 1 times [2023-11-17 11:33:35,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:33:35,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469373650] [2023-11-17 11:33:35,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:33:35,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:33:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:33:35,583 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 11:33:35,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:33:35,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469373650] [2023-11-17 11:33:35,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469373650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:33:35,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:33:35,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:33:35,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119726248] [2023-11-17 11:33:35,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:33:35,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:33:35,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:33:35,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:33:35,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:33:35,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2023-11-17 11:33:35,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 14 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 11:33:35,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:33:35,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2023-11-17 11:33:35,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:33:35,658 INFO L124 PetriNetUnfolderBase]: 41/84 cut-off events. [2023-11-17 11:33:35,658 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:33:35,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 84 events. 41/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 220 event pairs, 16 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 160. Up to 55 conditions per place. [2023-11-17 11:33:35,660 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 20 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-11-17 11:33:35,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 22 transitions, 94 flow [2023-11-17 11:33:35,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:33:35,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:33:35,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2023-11-17 11:33:35,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2023-11-17 11:33:35,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 38 transitions. [2023-11-17 11:33:35,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 38 transitions. [2023-11-17 11:33:35,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:33:35,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 38 transitions. [2023-11-17 11:33:35,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 11:33:35,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 11:33:35,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 11:33:35,675 INFO L175 Difference]: Start difference. First operand has 16 places, 14 transitions, 34 flow. Second operand 3 states and 38 transitions. [2023-11-17 11:33:35,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 22 transitions, 94 flow [2023-11-17 11:33:35,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 22 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:33:35,679 INFO L231 Difference]: Finished difference. Result has 17 places, 15 transitions, 42 flow [2023-11-17 11:33:35,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=17, PETRI_TRANSITIONS=15} [2023-11-17 11:33:35,683 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 1 predicate places. [2023-11-17 11:33:35,683 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 15 transitions, 42 flow [2023-11-17 11:33:35,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 11:33:35,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:33:35,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:33:35,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:33:35,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:33:35,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:33:35,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1854946277, now seen corresponding path program 1 times [2023-11-17 11:33:35,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:33:35,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852321619] [2023-11-17 11:33:35,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:33:35,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:33:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:33:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:33:35,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:33:35,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852321619] [2023-11-17 11:33:35,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852321619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:33:35,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:33:35,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:33:35,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079144165] [2023-11-17 11:33:35,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:33:35,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:33:35,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:33:35,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:33:35,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:33:35,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2023-11-17 11:33:35,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 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 11:33:35,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:33:35,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2023-11-17 11:33:35,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:33:35,858 INFO L124 PetriNetUnfolderBase]: 65/132 cut-off events. [2023-11-17 11:33:35,859 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-17 11:33:35,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 132 events. 65/132 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 394 event pairs, 28 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 80. Up to 85 conditions per place. [2023-11-17 11:33:35,862 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-11-17 11:33:35,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 24 transitions, 118 flow [2023-11-17 11:33:35,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:33:35,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:33:35,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2023-11-17 11:33:35,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2023-11-17 11:33:35,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 38 transitions. [2023-11-17 11:33:35,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 38 transitions. [2023-11-17 11:33:35,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:33:35,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 38 transitions. [2023-11-17 11:33:35,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 11:33:35,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 11:33:35,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 11:33:35,869 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 42 flow. Second operand 3 states and 38 transitions. [2023-11-17 11:33:35,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 24 transitions, 118 flow [2023-11-17 11:33:35,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 24 transitions, 114 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:33:35,871 INFO L231 Difference]: Finished difference. Result has 19 places, 16 transitions, 52 flow [2023-11-17 11:33:35,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=19, PETRI_TRANSITIONS=16} [2023-11-17 11:33:35,872 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 3 predicate places. [2023-11-17 11:33:35,872 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 16 transitions, 52 flow [2023-11-17 11:33:35,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 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 11:33:35,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:33:35,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:33:35,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:33:35,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:33:35,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:33:35,876 INFO L85 PathProgramCache]: Analyzing trace with hash 78648832, now seen corresponding path program 1 times [2023-11-17 11:33:35,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:33:35,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685676859] [2023-11-17 11:33:35,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:33:35,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:33:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:33:35,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:33:35,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:33:35,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685676859] [2023-11-17 11:33:35,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685676859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:33:35,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141646623] [2023-11-17 11:33:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:33:35,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:33:35,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:33:36,004 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 11:33:36,005 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 11:33:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:33:36,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 11:33:36,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:33:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:33:36,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:33:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:33:36,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141646623] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:33:36,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:33:36,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-17 11:33:36,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431718584] [2023-11-17 11:33:36,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:33:36,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:33:36,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:33:36,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:33:36,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:33:36,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2023-11-17 11:33:36,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 16 transitions, 52 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 11:33:36,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:33:36,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2023-11-17 11:33:36,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:33:36,437 INFO L124 PetriNetUnfolderBase]: 166/334 cut-off events. [2023-11-17 11:33:36,438 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2023-11-17 11:33:36,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 334 events. 166/334 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1123 event pairs, 8 based on Foata normal form. 48/382 useless extension candidates. Maximal degree in co-relation 174. Up to 61 conditions per place. [2023-11-17 11:33:36,440 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 71 selfloop transitions, 33 changer transitions 0/104 dead transitions. [2023-11-17 11:33:36,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 104 transitions, 510 flow [2023-11-17 11:33:36,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 11:33:36,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 11:33:36,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 182 transitions. [2023-11-17 11:33:36,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37916666666666665 [2023-11-17 11:33:36,442 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 182 transitions. [2023-11-17 11:33:36,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 182 transitions. [2023-11-17 11:33:36,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:33:36,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 182 transitions. [2023-11-17 11:33:36,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 11.375) internal successors, (182), 16 states have internal predecessors, (182), 0 states have call successors, (0), 0 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 11:33:36,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 30.0) internal successors, (510), 17 states have internal predecessors, (510), 0 states have call successors, (0), 0 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 11:33:36,445 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 30.0) internal successors, (510), 17 states have internal predecessors, (510), 0 states have call successors, (0), 0 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 11:33:36,445 INFO L175 Difference]: Start difference. First operand has 19 places, 16 transitions, 52 flow. Second operand 16 states and 182 transitions. [2023-11-17 11:33:36,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 104 transitions, 510 flow [2023-11-17 11:33:36,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 104 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:33:36,447 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 324 flow [2023-11-17 11:33:36,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=324, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-11-17 11:33:36,448 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 30 predicate places. [2023-11-17 11:33:36,448 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 324 flow [2023-11-17 11:33:36,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 11:33:36,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:33:36,448 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:33:36,461 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 11:33:36,654 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 11:33:36,655 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:33:36,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:33:36,655 INFO L85 PathProgramCache]: Analyzing trace with hash 451433612, now seen corresponding path program 2 times [2023-11-17 11:33:36,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:33:36,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099908128] [2023-11-17 11:33:36,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:33:36,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:33:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:33:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 11:33:36,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:33:36,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099908128] [2023-11-17 11:33:36,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099908128] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:33:36,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115477588] [2023-11-17 11:33:36,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:33:36,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:33:36,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:33:36,787 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 11:33:36,816 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 11:33:36,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 11:33:36,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:33:36,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 11:33:36,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:33:36,915 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 11:33:36,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:33:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 11:33:36,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115477588] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:33:36,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:33:36,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-17 11:33:36,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888395899] [2023-11-17 11:33:36,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:33:36,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:33:36,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:33:36,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:33:36,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:33:36,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2023-11-17 11:33:36,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 324 flow. Second operand has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 13 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 11:33:36,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:33:36,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2023-11-17 11:33:36,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:33:37,170 INFO L124 PetriNetUnfolderBase]: 364/730 cut-off events. [2023-11-17 11:33:37,170 INFO L125 PetriNetUnfolderBase]: For 4613/4613 co-relation queries the response was YES. [2023-11-17 11:33:37,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2916 conditions, 730 events. 364/730 cut-off events. For 4613/4613 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2474 event pairs, 28 based on Foata normal form. 66/796 useless extension candidates. Maximal degree in co-relation 2204. Up to 144 conditions per place. [2023-11-17 11:33:37,176 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 132 selfloop transitions, 36 changer transitions 0/168 dead transitions. [2023-11-17 11:33:37,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 168 transitions, 1562 flow [2023-11-17 11:33:37,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:33:37,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:33:37,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2023-11-17 11:33:37,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2023-11-17 11:33:37,178 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 158 transitions. [2023-11-17 11:33:37,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 158 transitions. [2023-11-17 11:33:37,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:33:37,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 158 transitions. [2023-11-17 11:33:37,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 13.166666666666666) internal successors, (158), 12 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 11:33:37,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 30.0) internal successors, (390), 13 states have internal predecessors, (390), 0 states have call successors, (0), 0 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 11:33:37,180 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 30.0) internal successors, (390), 13 states have internal predecessors, (390), 0 states have call successors, (0), 0 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 11:33:37,180 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 324 flow. Second operand 12 states and 158 transitions. [2023-11-17 11:33:37,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 168 transitions, 1562 flow [2023-11-17 11:33:37,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 168 transitions, 1434 flow, removed 44 selfloop flow, removed 2 redundant places. [2023-11-17 11:33:37,194 INFO L231 Difference]: Finished difference. Result has 62 places, 65 transitions, 544 flow [2023-11-17 11:33:37,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=544, PETRI_PLACES=62, PETRI_TRANSITIONS=65} [2023-11-17 11:33:37,195 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 46 predicate places. [2023-11-17 11:33:37,195 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 65 transitions, 544 flow [2023-11-17 11:33:37,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 13 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 11:33:37,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:33:37,195 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:33:37,201 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 11:33:37,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-17 11:33:37,404 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:33:37,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:33:37,404 INFO L85 PathProgramCache]: Analyzing trace with hash -499403732, now seen corresponding path program 3 times [2023-11-17 11:33:37,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:33:37,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192249854] [2023-11-17 11:33:37,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:33:37,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:33:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:33:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 11:33:37,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:33:37,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192249854] [2023-11-17 11:33:37,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192249854] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:33:37,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252848719] [2023-11-17 11:33:37,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:33:37,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:33:37,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:33:37,659 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 11:33:37,683 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 11:33:37,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-17 11:33:37,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:33:37,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 11:33:37,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:33:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-17 11:33:37,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:33:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-17 11:33:37,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252848719] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:33:37,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:33:37,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2023-11-17 11:33:37,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41581391] [2023-11-17 11:33:37,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:33:37,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 11:33:37,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:33:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 11:33:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2023-11-17 11:33:37,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2023-11-17 11:33:37,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 65 transitions, 544 flow. Second operand has 19 states, 19 states have (on average 7.2631578947368425) internal successors, (138), 19 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 11:33:37,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:33:37,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2023-11-17 11:33:37,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:33:39,093 INFO L124 PetriNetUnfolderBase]: 799/1600 cut-off events. [2023-11-17 11:33:39,093 INFO L125 PetriNetUnfolderBase]: For 12331/12331 co-relation queries the response was YES. [2023-11-17 11:33:39,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6770 conditions, 1600 events. 799/1600 cut-off events. For 12331/12331 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 6720 event pairs, 18 based on Foata normal form. 173/1773 useless extension candidates. Maximal degree in co-relation 5667. Up to 312 conditions per place. [2023-11-17 11:33:39,105 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 342 selfloop transitions, 204 changer transitions 0/546 dead transitions. [2023-11-17 11:33:39,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 546 transitions, 4612 flow [2023-11-17 11:33:39,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-11-17 11:33:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2023-11-17 11:33:39,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 917 transitions. [2023-11-17 11:33:39,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3596078431372549 [2023-11-17 11:33:39,120 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 917 transitions. [2023-11-17 11:33:39,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 917 transitions. [2023-11-17 11:33:39,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:33:39,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 917 transitions. [2023-11-17 11:33:39,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 10.788235294117648) internal successors, (917), 85 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:33:39,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 30.0) internal successors, (2580), 86 states have internal predecessors, (2580), 0 states have call successors, (0), 0 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 11:33:39,143 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 30.0) internal successors, (2580), 86 states have internal predecessors, (2580), 0 states have call successors, (0), 0 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 11:33:39,144 INFO L175 Difference]: Start difference. First operand has 62 places, 65 transitions, 544 flow. Second operand 85 states and 917 transitions. [2023-11-17 11:33:39,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 546 transitions, 4612 flow [2023-11-17 11:33:39,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 546 transitions, 4570 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:33:39,167 INFO L231 Difference]: Finished difference. Result has 205 places, 227 transitions, 2880 flow [2023-11-17 11:33:39,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=2880, PETRI_PLACES=205, PETRI_TRANSITIONS=227} [2023-11-17 11:33:39,168 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 189 predicate places. [2023-11-17 11:33:39,168 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 227 transitions, 2880 flow [2023-11-17 11:33:39,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.2631578947368425) internal successors, (138), 19 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 11:33:39,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:33:39,169 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:33:39,189 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 11:33:39,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:33:39,377 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:33:39,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:33:39,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1788586399, now seen corresponding path program 4 times [2023-11-17 11:33:39,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:33:39,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161855707] [2023-11-17 11:33:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:33:39,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:33:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:33:39,602 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-17 11:33:39,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:33:39,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161855707] [2023-11-17 11:33:39,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161855707] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:33:39,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624023585] [2023-11-17 11:33:39,602 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:33:39,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:33:39,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:33:39,618 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 11:33:39,681 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 11:33:39,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:33:39,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:33:39,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 11:33:39,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:33:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-17 11:33:39,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:33:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-17 11:33:40,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624023585] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:33:40,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:33:40,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2023-11-17 11:33:40,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225981275] [2023-11-17 11:33:40,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:33:40,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 11:33:40,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:33:40,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 11:33:40,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2023-11-17 11:33:40,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2023-11-17 11:33:40,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 227 transitions, 2880 flow. Second operand has 23 states, 23 states have (on average 8.434782608695652) internal successors, (194), 23 states have internal predecessors, (194), 0 states have call successors, (0), 0 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 11:33:40,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:33:40,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2023-11-17 11:33:40,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:33:40,768 INFO L124 PetriNetUnfolderBase]: 1324/2650 cut-off events. [2023-11-17 11:33:40,769 INFO L125 PetriNetUnfolderBase]: For 180633/180633 co-relation queries the response was YES. [2023-11-17 11:33:40,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20444 conditions, 2650 events. 1324/2650 cut-off events. For 180633/180633 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 11337 event pairs, 32 based on Foata normal form. 189/2839 useless extension candidates. Maximal degree in co-relation 18488. Up to 473 conditions per place. [2023-11-17 11:33:40,807 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 356 selfloop transitions, 150 changer transitions 0/506 dead transitions. [2023-11-17 11:33:40,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 506 transitions, 8984 flow [2023-11-17 11:33:40,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 11:33:40,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 11:33:40,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 291 transitions. [2023-11-17 11:33:40,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2023-11-17 11:33:40,809 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 291 transitions. [2023-11-17 11:33:40,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 291 transitions. [2023-11-17 11:33:40,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:33:40,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 291 transitions. [2023-11-17 11:33:40,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 13.227272727272727) internal successors, (291), 22 states have internal predecessors, (291), 0 states have call successors, (0), 0 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 11:33:40,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 30.0) internal successors, (690), 23 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 11:33:40,814 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 30.0) internal successors, (690), 23 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 11:33:40,814 INFO L175 Difference]: Start difference. First operand has 205 places, 227 transitions, 2880 flow. Second operand 22 states and 291 transitions. [2023-11-17 11:33:40,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 506 transitions, 8984 flow [2023-11-17 11:33:41,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 506 transitions, 8104 flow, removed 368 selfloop flow, removed 15 redundant places. [2023-11-17 11:33:41,118 INFO L231 Difference]: Finished difference. Result has 221 places, 286 transitions, 3388 flow [2023-11-17 11:33:41,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3388, PETRI_PLACES=221, PETRI_TRANSITIONS=286} [2023-11-17 11:33:41,121 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 205 predicate places. [2023-11-17 11:33:41,121 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 286 transitions, 3388 flow [2023-11-17 11:33:41,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.434782608695652) internal successors, (194), 23 states have internal predecessors, (194), 0 states have call successors, (0), 0 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 11:33:41,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:33:41,123 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:33:41,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-17 11:33:41,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:33:41,329 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:33:41,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:33:41,330 INFO L85 PathProgramCache]: Analyzing trace with hash -601539442, now seen corresponding path program 5 times [2023-11-17 11:33:41,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:33:41,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637375783] [2023-11-17 11:33:41,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:33:41,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:33:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:33:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 20 proven. 51 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-11-17 11:33:41,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:33:41,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637375783] [2023-11-17 11:33:41,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637375783] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:33:41,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922107662] [2023-11-17 11:33:41,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 11:33:41,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:33:41,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:33:41,537 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 11:33:41,538 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 11:33:41,749 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2023-11-17 11:33:41,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:33:41,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 11:33:41,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:33:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 20 proven. 51 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-11-17 11:33:41,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:33:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 20 proven. 51 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-11-17 11:33:41,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922107662] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:33:41,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:33:41,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2023-11-17 11:33:41,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028385898] [2023-11-17 11:33:41,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:33:41,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 11:33:41,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:33:41,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 11:33:41,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2023-11-17 11:33:41,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2023-11-17 11:33:41,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 286 transitions, 3388 flow. Second operand has 17 states, 17 states have (on average 8.352941176470589) internal successors, (142), 17 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 11:33:41,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:33:41,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2023-11-17 11:33:41,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:33:43,393 INFO L124 PetriNetUnfolderBase]: 2836/5674 cut-off events. [2023-11-17 11:33:43,393 INFO L125 PetriNetUnfolderBase]: For 825639/825639 co-relation queries the response was YES. [2023-11-17 11:33:43,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35106 conditions, 5674 events. 2836/5674 cut-off events. For 825639/825639 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 29795 event pairs, 169 based on Foata normal form. 504/6178 useless extension candidates. Maximal degree in co-relation 31878. Up to 945 conditions per place. [2023-11-17 11:33:43,525 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 694 selfloop transitions, 216 changer transitions 0/910 dead transitions. [2023-11-17 11:33:43,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 910 transitions, 12996 flow [2023-11-17 11:33:43,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 11:33:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 11:33:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 212 transitions. [2023-11-17 11:33:43,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2023-11-17 11:33:43,526 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 212 transitions. [2023-11-17 11:33:43,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 212 transitions. [2023-11-17 11:33:43,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:33:43,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 212 transitions. [2023-11-17 11:33:43,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 13.25) internal successors, (212), 16 states have internal predecessors, (212), 0 states have call successors, (0), 0 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 11:33:43,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 30.0) internal successors, (510), 17 states have internal predecessors, (510), 0 states have call successors, (0), 0 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 11:33:43,527 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 30.0) internal successors, (510), 17 states have internal predecessors, (510), 0 states have call successors, (0), 0 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 11:33:43,527 INFO L175 Difference]: Start difference. First operand has 221 places, 286 transitions, 3388 flow. Second operand 16 states and 212 transitions. [2023-11-17 11:33:43,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 910 transitions, 12996 flow [2023-11-17 11:33:44,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 910 transitions, 12490 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-17 11:33:44,056 INFO L231 Difference]: Finished difference. Result has 234 places, 394 transitions, 4714 flow [2023-11-17 11:33:44,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3234, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4714, PETRI_PLACES=234, PETRI_TRANSITIONS=394} [2023-11-17 11:33:44,057 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 218 predicate places. [2023-11-17 11:33:44,057 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 394 transitions, 4714 flow [2023-11-17 11:33:44,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.352941176470589) internal successors, (142), 17 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 11:33:44,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:33:44,058 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:33:44,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-17 11:33:44,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:33:44,259 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:33:44,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:33:44,259 INFO L85 PathProgramCache]: Analyzing trace with hash -219708826, now seen corresponding path program 6 times [2023-11-17 11:33:44,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:33:44,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270002451] [2023-11-17 11:33:44,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:33:44,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:33:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:33:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 370 proven. 287 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-17 11:33:44,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:33:44,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270002451] [2023-11-17 11:33:44,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270002451] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:33:44,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086833103] [2023-11-17 11:33:44,670 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 11:33:44,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:33:44,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:33:44,690 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 11:33:44,708 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 11:33:45,069 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2023-11-17 11:33:45,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:33:45,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 11:33:45,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:33:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 370 proven. 287 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-17 11:33:45,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:33:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 370 proven. 287 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-17 11:33:45,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086833103] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:33:45,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:33:45,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-17 11:33:45,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662734794] [2023-11-17 11:33:45,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:33:45,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 11:33:45,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:33:45,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 11:33:45,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2023-11-17 11:33:45,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2023-11-17 11:33:45,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 394 transitions, 4714 flow. Second operand has 23 states, 23 states have (on average 8.608695652173912) internal successors, (198), 23 states have internal predecessors, (198), 0 states have call successors, (0), 0 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 11:33:45,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:33:45,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2023-11-17 11:33:45,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:33:47,708 INFO L124 PetriNetUnfolderBase]: 3970/7942 cut-off events. [2023-11-17 11:33:47,708 INFO L125 PetriNetUnfolderBase]: For 865008/865008 co-relation queries the response was YES. [2023-11-17 11:33:47,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49740 conditions, 7942 events. 3970/7942 cut-off events. For 865008/865008 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 43334 event pairs, 239 based on Foata normal form. 378/8320 useless extension candidates. Maximal degree in co-relation 45084. Up to 1323 conditions per place. [2023-11-17 11:33:47,807 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 1060 selfloop transitions, 288 changer transitions 0/1348 dead transitions. [2023-11-17 11:33:47,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 1348 transitions, 19858 flow [2023-11-17 11:33:47,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 11:33:47,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 11:33:47,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 288 transitions. [2023-11-17 11:33:47,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2023-11-17 11:33:47,809 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 288 transitions. [2023-11-17 11:33:47,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 288 transitions. [2023-11-17 11:33:47,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:33:47,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 288 transitions. [2023-11-17 11:33:47,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 13.090909090909092) internal successors, (288), 22 states have internal predecessors, (288), 0 states have call successors, (0), 0 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 11:33:47,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 30.0) internal successors, (690), 23 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 11:33:47,811 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 30.0) internal successors, (690), 23 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 11:33:47,811 INFO L175 Difference]: Start difference. First operand has 234 places, 394 transitions, 4714 flow. Second operand 22 states and 288 transitions. [2023-11-17 11:33:47,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 1348 transitions, 19858 flow [2023-11-17 11:33:48,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 1348 transitions, 19698 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-17 11:33:48,579 INFO L231 Difference]: Finished difference. Result has 257 places, 478 transitions, 6290 flow [2023-11-17 11:33:48,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=4554, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6290, PETRI_PLACES=257, PETRI_TRANSITIONS=478} [2023-11-17 11:33:48,580 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 241 predicate places. [2023-11-17 11:33:48,580 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 478 transitions, 6290 flow [2023-11-17 11:33:48,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.608695652173912) internal successors, (198), 23 states have internal predecessors, (198), 0 states have call successors, (0), 0 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 11:33:48,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:33:48,581 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:33:48,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 11:33:48,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:33:48,787 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:33:48,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:33:48,788 INFO L85 PathProgramCache]: Analyzing trace with hash 429290286, now seen corresponding path program 7 times [2023-11-17 11:33:48,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:33:48,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244127536] [2023-11-17 11:33:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:33:48,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:33:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:33:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:33:51,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:33:51,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244127536] [2023-11-17 11:33:51,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244127536] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:33:51,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554215534] [2023-11-17 11:33:51,063 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 11:33:51,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:33:51,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:33:51,065 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 11:33:51,092 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 11:33:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:33:51,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 128 conjunts are in the unsatisfiable core [2023-11-17 11:33:51,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:33:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:33:51,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:33:51,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:33:51,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554215534] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:33:51,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:33:51,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 41 [2023-11-17 11:33:51,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814270487] [2023-11-17 11:33:51,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:33:51,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-17 11:33:51,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:33:51,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-17 11:33:51,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2023-11-17 11:33:51,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2023-11-17 11:33:51,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 478 transitions, 6290 flow. Second operand has 43 states, 43 states have (on average 8.976744186046512) internal successors, (386), 43 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:33:51,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:33:51,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2023-11-17 11:33:51,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:01,438 INFO L124 PetriNetUnfolderBase]: 9616/19235 cut-off events. [2023-11-17 11:34:01,438 INFO L125 PetriNetUnfolderBase]: For 2019444/2019444 co-relation queries the response was YES. [2023-11-17 11:34:01,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183850 conditions, 19235 events. 9616/19235 cut-off events. For 2019444/2019444 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 127483 event pairs, 2 based on Foata normal form. 1/19236 useless extension candidates. Maximal degree in co-relation 148983. Up to 3110 conditions per place. [2023-11-17 11:34:01,763 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 3394 selfloop transitions, 83 changer transitions 1/3478 dead transitions. [2023-11-17 11:34:01,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 3478 transitions, 56738 flow [2023-11-17 11:34:01,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-17 11:34:01,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-11-17 11:34:01,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 642 transitions. [2023-11-17 11:34:01,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49767441860465117 [2023-11-17 11:34:01,765 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 642 transitions. [2023-11-17 11:34:01,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 642 transitions. [2023-11-17 11:34:01,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:01,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 642 transitions. [2023-11-17 11:34:01,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 14.930232558139535) internal successors, (642), 43 states have internal predecessors, (642), 0 states have call successors, (0), 0 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 11:34:01,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 30.0) internal successors, (1320), 44 states have internal predecessors, (1320), 0 states have call successors, (0), 0 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 11:34:01,770 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 30.0) internal successors, (1320), 44 states have internal predecessors, (1320), 0 states have call successors, (0), 0 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 11:34:01,770 INFO L175 Difference]: Start difference. First operand has 257 places, 478 transitions, 6290 flow. Second operand 43 states and 642 transitions. [2023-11-17 11:34:01,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 3478 transitions, 56738 flow [2023-11-17 11:34:17,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 3478 transitions, 55319 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-11-17 11:34:17,074 INFO L231 Difference]: Finished difference. Result has 287 places, 560 transitions, 6278 flow [2023-11-17 11:34:17,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=5938, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=6278, PETRI_PLACES=287, PETRI_TRANSITIONS=560} [2023-11-17 11:34:17,075 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 271 predicate places. [2023-11-17 11:34:17,076 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 560 transitions, 6278 flow [2023-11-17 11:34:17,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 8.976744186046512) internal successors, (386), 43 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:34:17,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:17,076 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:34:17,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-17 11:34:17,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:34:17,282 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:34:17,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:17,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1830942107, now seen corresponding path program 8 times [2023-11-17 11:34:17,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:17,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016135819] [2023-11-17 11:34:17,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:17,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-17 11:34:17,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:17,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016135819] [2023-11-17 11:34:17,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016135819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:17,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:34:17,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:34:17,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339104124] [2023-11-17 11:34:17,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:17,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:34:17,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:17,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:34:17,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:34:17,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2023-11-17 11:34:17,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 560 transitions, 6278 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 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 11:34:17,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:17,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2023-11-17 11:34:17,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:20,593 INFO L124 PetriNetUnfolderBase]: 2664/8851 cut-off events. [2023-11-17 11:34:20,593 INFO L125 PetriNetUnfolderBase]: For 2260996/2260996 co-relation queries the response was YES. [2023-11-17 11:34:20,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124362 conditions, 8851 events. 2664/8851 cut-off events. For 2260996/2260996 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 72796 event pairs, 441 based on Foata normal form. 3520/12371 useless extension candidates. Maximal degree in co-relation 105787. Up to 5902 conditions per place. [2023-11-17 11:34:20,773 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 129 selfloop transitions, 427 changer transitions 0/556 dead transitions. [2023-11-17 11:34:20,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 556 transitions, 7570 flow [2023-11-17 11:34:20,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:34:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:34:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2023-11-17 11:34:20,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2023-11-17 11:34:20,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 38 transitions. [2023-11-17 11:34:20,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 38 transitions. [2023-11-17 11:34:20,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:20,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 38 transitions. [2023-11-17 11:34:20,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 11:34:20,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 11:34:20,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 11:34:20,775 INFO L175 Difference]: Start difference. First operand has 287 places, 560 transitions, 6278 flow. Second operand 3 states and 38 transitions. [2023-11-17 11:34:20,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 556 transitions, 7570 flow [2023-11-17 11:34:27,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 556 transitions, 7570 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:34:27,558 INFO L231 Difference]: Finished difference. Result has 289 places, 544 transitions, 6985 flow [2023-11-17 11:34:27,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=6131, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=427, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=6985, PETRI_PLACES=289, PETRI_TRANSITIONS=544} [2023-11-17 11:34:27,559 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 273 predicate places. [2023-11-17 11:34:27,559 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 544 transitions, 6985 flow [2023-11-17 11:34:27,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 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 11:34:27,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:27,559 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:34:27,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 11:34:27,559 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:34:27,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:27,560 INFO L85 PathProgramCache]: Analyzing trace with hash -120067891, now seen corresponding path program 9 times [2023-11-17 11:34:27,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:27,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4802738] [2023-11-17 11:34:27,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:27,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 593 proven. 58 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-11-17 11:34:28,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:28,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4802738] [2023-11-17 11:34:28,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4802738] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:34:28,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301998635] [2023-11-17 11:34:28,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:34:28,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:34:28,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:34:28,061 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 11:34:28,063 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 11:34:28,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2023-11-17 11:34:28,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:34:28,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-17 11:34:28,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:34:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 651 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-11-17 11:34:28,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:34:28,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301998635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:28,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:34:28,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2023-11-17 11:34:28,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187466238] [2023-11-17 11:34:28,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:28,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 11:34:28,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:28,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 11:34:28,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2023-11-17 11:34:28,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2023-11-17 11:34:28,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 544 transitions, 6985 flow. Second operand has 23 states, 23 states have (on average 8.217391304347826) internal successors, (189), 23 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 11:34:28,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:28,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2023-11-17 11:34:28,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:30,815 INFO L124 PetriNetUnfolderBase]: 1657/5945 cut-off events. [2023-11-17 11:34:30,816 INFO L125 PetriNetUnfolderBase]: For 1844884/1844884 co-relation queries the response was YES. [2023-11-17 11:34:30,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89026 conditions, 5945 events. 1657/5945 cut-off events. For 1844884/1844884 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 44493 event pairs, 45 based on Foata normal form. 25/5970 useless extension candidates. Maximal degree in co-relation 85469. Up to 1656 conditions per place. [2023-11-17 11:34:30,896 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 2009 selfloop transitions, 147 changer transitions 0/2156 dead transitions. [2023-11-17 11:34:30,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 2156 transitions, 24765 flow [2023-11-17 11:34:30,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 11:34:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 11:34:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 292 transitions. [2023-11-17 11:34:30,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42318840579710143 [2023-11-17 11:34:30,897 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 292 transitions. [2023-11-17 11:34:30,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 292 transitions. [2023-11-17 11:34:30,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:30,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 292 transitions. [2023-11-17 11:34:30,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 12.695652173913043) internal successors, (292), 23 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 11:34:30,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 30.0) internal successors, (720), 24 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 11:34:30,899 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 30.0) internal successors, (720), 24 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 11:34:30,899 INFO L175 Difference]: Start difference. First operand has 289 places, 544 transitions, 6985 flow. Second operand 23 states and 292 transitions. [2023-11-17 11:34:30,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 2156 transitions, 24765 flow [2023-11-17 11:34:37,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 2156 transitions, 24031 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:34:37,617 INFO L231 Difference]: Finished difference. Result has 309 places, 541 transitions, 6793 flow [2023-11-17 11:34:37,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=6499, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=6793, PETRI_PLACES=309, PETRI_TRANSITIONS=541} [2023-11-17 11:34:37,618 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 293 predicate places. [2023-11-17 11:34:37,618 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 541 transitions, 6793 flow [2023-11-17 11:34:37,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.217391304347826) internal successors, (189), 23 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 11:34:37,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:37,619 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:34:37,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-17 11:34:37,821 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,SelfDestructingSolverStorable10 [2023-11-17 11:34:37,821 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:34:37,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:37,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1020220639, now seen corresponding path program 10 times [2023-11-17 11:34:37,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:37,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509708199] [2023-11-17 11:34:37,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:37,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:38,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 593 proven. 58 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-11-17 11:34:38,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:38,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509708199] [2023-11-17 11:34:38,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509708199] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:34:38,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223442014] [2023-11-17 11:34:38,279 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:34:38,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:34:38,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:34:38,289 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 11:34:38,316 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 11:34:40,173 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:34:40,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:34:40,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-17 11:34:40,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:34:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 651 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-11-17 11:34:40,242 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:34:40,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223442014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:40,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:34:40,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2023-11-17 11:34:40,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933917143] [2023-11-17 11:34:40,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:40,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 11:34:40,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:40,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 11:34:40,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2023-11-17 11:34:40,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2023-11-17 11:34:40,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 541 transitions, 6793 flow. Second operand has 23 states, 23 states have (on average 8.217391304347826) internal successors, (189), 23 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 11:34:40,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:40,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2023-11-17 11:34:40,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:41,434 INFO L124 PetriNetUnfolderBase]: 644/3015 cut-off events. [2023-11-17 11:34:41,435 INFO L125 PetriNetUnfolderBase]: For 202475/202475 co-relation queries the response was YES. [2023-11-17 11:34:41,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25565 conditions, 3015 events. 644/3015 cut-off events. For 202475/202475 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 19979 event pairs, 40 based on Foata normal form. 23/3038 useless extension candidates. Maximal degree in co-relation 25080. Up to 921 conditions per place. [2023-11-17 11:34:41,463 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 0 selfloop transitions, 0 changer transitions 1862/1862 dead transitions. [2023-11-17 11:34:41,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 1862 transitions, 22455 flow [2023-11-17 11:34:41,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 11:34:41,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 11:34:41,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 291 transitions. [2023-11-17 11:34:41,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217391304347826 [2023-11-17 11:34:41,464 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 291 transitions. [2023-11-17 11:34:41,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 291 transitions. [2023-11-17 11:34:41,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:41,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 291 transitions. [2023-11-17 11:34:41,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 12.652173913043478) internal successors, (291), 23 states have internal predecessors, (291), 0 states have call successors, (0), 0 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 11:34:41,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 30.0) internal successors, (720), 24 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 11:34:41,466 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 30.0) internal successors, (720), 24 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 11:34:41,466 INFO L175 Difference]: Start difference. First operand has 309 places, 541 transitions, 6793 flow. Second operand 23 states and 291 transitions. [2023-11-17 11:34:41,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 1862 transitions, 22455 flow [2023-11-17 11:34:42,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 1862 transitions, 21490 flow, removed 0 selfloop flow, removed 24 redundant places. [2023-11-17 11:34:42,243 INFO L231 Difference]: Finished difference. Result has 306 places, 0 transitions, 0 flow [2023-11-17 11:34:42,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=6269, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=306, PETRI_TRANSITIONS=0} [2023-11-17 11:34:42,244 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 290 predicate places. [2023-11-17 11:34:42,244 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 0 transitions, 0 flow [2023-11-17 11:34:42,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.217391304347826) internal successors, (189), 23 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 11:34:42,246 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-17 11:34:42,247 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-11-17 11:34:42,255 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 11:34:42,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:34:42,455 INFO L445 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2023-11-17 11:34:42,458 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:34:42,458 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:34:42,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:34:42 BasicIcfg [2023-11-17 11:34:42,463 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:34:42,464 INFO L158 Benchmark]: Toolchain (without parser) took 68482.67ms. Allocated memory was 319.8MB in the beginning and 3.2GB in the end (delta: 2.9GB). Free memory was 272.1MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-11-17 11:34:42,464 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 185.6MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:34:42,464 INFO L158 Benchmark]: CACSL2BoogieTranslator took 603.75ms. Allocated memory is still 319.8MB. Free memory was 272.1MB in the beginning and 233.3MB in the end (delta: 38.8MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-11-17 11:34:42,464 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.57ms. Allocated memory is still 319.8MB. Free memory was 233.3MB in the beginning and 230.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:34:42,464 INFO L158 Benchmark]: Boogie Preprocessor took 24.78ms. Allocated memory is still 319.8MB. Free memory was 230.9MB in the beginning and 229.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:34:42,464 INFO L158 Benchmark]: RCFGBuilder took 354.13ms. Allocated memory is still 319.8MB. Free memory was 229.2MB in the beginning and 265.5MB in the end (delta: -36.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-11-17 11:34:42,465 INFO L158 Benchmark]: TraceAbstraction took 67445.16ms. Allocated memory was 319.8MB in the beginning and 3.2GB in the end (delta: 2.9GB). Free memory was 265.0MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-11-17 11:34:42,465 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 185.6MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 603.75ms. Allocated memory is still 319.8MB. Free memory was 272.1MB in the beginning and 233.3MB in the end (delta: 38.8MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.57ms. Allocated memory is still 319.8MB. Free memory was 233.3MB in the beginning and 230.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.78ms. Allocated memory is still 319.8MB. Free memory was 230.9MB in the beginning and 229.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 354.13ms. Allocated memory is still 319.8MB. Free memory was 229.2MB in the beginning and 265.5MB in the end (delta: -36.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 67445.16ms. Allocated memory was 319.8MB in the beginning and 3.2GB in the end (delta: 2.9GB). Free memory was 265.0MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 22 PlacesBefore, 16 PlacesAfterwards, 20 TransitionsBefore, 14 TransitionsAfterwards, 98 CoEnabledTransitionPairs, 2 FixpointIterations, 2 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 198 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 142, independent: 118, independent conditional: 0, independent unconditional: 118, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 75, independent: 67, independent conditional: 0, independent unconditional: 67, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 75, independent: 62, independent conditional: 0, independent unconditional: 62, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 30, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 142, independent: 51, independent conditional: 0, independent unconditional: 51, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 75, unknown conditional: 0, unknown unconditional: 75] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 13]: 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 3 procedures, 30 locations, 2 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: 67.4s, OverallIterations: 12, TraceHistogramMax: 21, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 54.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2171 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2171 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17560 IncrementalHoareTripleChecker+Invalid, 17612 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 0 mSDtfsCounter, 17560 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1484 GetRequests, 1217 SyntacticMatches, 14 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2597 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6985occurred in iteration=10, InterpolantAutomatonStates: 271, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 1608 NumberOfCodeBlocks, 1587 NumberOfCodeBlocksAsserted, 95 NumberOfCheckSat, 2047 ConstructedInterpolants, 0 QuantifiedInterpolants, 4721 SizeOfPredicates, 20 NumberOfNonLiveVariables, 4681 ConjunctsInSsa, 222 ConjunctsInUnsatCore, 28 InterpolantComputations, 5 PerfectInterpolantSequences, 10096/15518 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 11:34:42,478 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...