/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/weaver/chl-chromosome-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:52:19,091 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:52:19,158 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 11:52:19,185 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:52:19,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:52:19,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:52:19,187 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:52:19,187 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:52:19,188 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:52:19,188 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:52:19,189 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:52:19,189 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:52:19,190 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:52:19,193 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:52:19,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:52:19,194 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:52:19,194 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:52:19,194 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:52:19,195 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:52:19,195 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:52:19,195 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:52:19,197 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:52:19,197 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:52:19,197 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:52:19,197 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:52:19,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:52:19,199 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:52:19,199 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:52:19,199 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:52:19,200 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:52:19,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:52:19,205 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:52:19,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:52:19,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:52:19,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:52:19,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:52:19,477 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:52:19,477 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:52:19,478 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-11-17 11:52:20,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:52:20,852 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:52:20,853 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-11-17 11:52:20,863 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0500fa828/18117bde835a4923a99deceaffdc9ac5/FLAG08a1afe07 [2023-11-17 11:52:20,883 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0500fa828/18117bde835a4923a99deceaffdc9ac5 [2023-11-17 11:52:20,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:52:20,888 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:52:20,891 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:52:20,891 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:52:20,895 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:52:20,895 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:52:20" (1/1) ... [2023-11-17 11:52:20,897 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6880b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:20, skipping insertion in model container [2023-11-17 11:52:20,897 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:52:20" (1/1) ... [2023-11-17 11:52:20,929 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:52:21,126 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c[3136,3149] [2023-11-17 11:52:21,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:52:21,156 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:52:21,195 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c[3136,3149] [2023-11-17 11:52:21,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:52:21,215 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:52:21,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:21 WrapperNode [2023-11-17 11:52:21,217 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:52:21,218 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:52:21,219 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:52:21,219 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:52:21,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:21" (1/1) ... [2023-11-17 11:52:21,244 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:21" (1/1) ... [2023-11-17 11:52:21,279 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 286 [2023-11-17 11:52:21,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:52:21,280 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:52:21,280 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:52:21,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:52:21,292 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:21" (1/1) ... [2023-11-17 11:52:21,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:21" (1/1) ... [2023-11-17 11:52:21,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:21" (1/1) ... [2023-11-17 11:52:21,307 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:21" (1/1) ... [2023-11-17 11:52:21,315 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:21" (1/1) ... [2023-11-17 11:52:21,333 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:21" (1/1) ... [2023-11-17 11:52:21,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:21" (1/1) ... [2023-11-17 11:52:21,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:21" (1/1) ... [2023-11-17 11:52:21,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:52:21,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:52:21,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:52:21,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:52:21,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:21" (1/1) ... [2023-11-17 11:52:21,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:52:21,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:21,414 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 11:52:21,438 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 11:52:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:52:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:52:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:52:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:52:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 11:52:21,451 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 11:52:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 11:52:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 11:52:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 11:52:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 11:52:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:52:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 11:52:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:52:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:52:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:52:21,454 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 11:52:21,574 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:52:21,579 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:52:22,059 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:52:22,434 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:52:22,435 INFO L307 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-17 11:52:22,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:52:22 BoogieIcfgContainer [2023-11-17 11:52:22,437 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:52:22,439 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:52:22,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:52:22,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:52:22,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:52:20" (1/3) ... [2023-11-17 11:52:22,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ea593f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:52:22, skipping insertion in model container [2023-11-17 11:52:22,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:21" (2/3) ... [2023-11-17 11:52:22,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ea593f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:52:22, skipping insertion in model container [2023-11-17 11:52:22,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:52:22" (3/3) ... [2023-11-17 11:52:22,445 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2023-11-17 11:52:22,463 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:52:22,463 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:52:22,463 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:52:22,522 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 11:52:22,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 33 transitions, 87 flow [2023-11-17 11:52:22,600 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2023-11-17 11:52:22,600 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:52:22,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 6/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2023-11-17 11:52:22,606 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 33 transitions, 87 flow [2023-11-17 11:52:22,610 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 29 transitions, 76 flow [2023-11-17 11:52:22,613 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:52:22,631 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 29 transitions, 76 flow [2023-11-17 11:52:22,636 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 29 transitions, 76 flow [2023-11-17 11:52:22,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 76 flow [2023-11-17 11:52:22,653 INFO L124 PetriNetUnfolderBase]: 6/29 cut-off events. [2023-11-17 11:52:22,653 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:52:22,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 29 events. 6/29 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2023-11-17 11:52:22,654 INFO L119 LiptonReduction]: Number of co-enabled transitions 144 [2023-11-17 11:52:22,741 INFO L134 LiptonReduction]: Checked pairs total: 138 [2023-11-17 11:52:22,741 INFO L136 LiptonReduction]: Total number of compositions: 1 [2023-11-17 11:52:22,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:52:22,769 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;@618ccc16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:52:22,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 11:52:22,780 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:52:22,781 INFO L124 PetriNetUnfolderBase]: 6/27 cut-off events. [2023-11-17 11:52:22,781 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:52:22,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:22,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:22,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:22,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:22,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1686140031, now seen corresponding path program 1 times [2023-11-17 11:52:22,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:22,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323856238] [2023-11-17 11:52:22,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:22,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:23,305 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 11:52:23,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:23,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323856238] [2023-11-17 11:52:23,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323856238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:23,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:52:23,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:52:23,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532522975] [2023-11-17 11:52:23,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:23,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:52:23,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:23,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:52:23,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:52:23,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:23,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 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 11:52:23,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:23,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:23,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:23,515 INFO L124 PetriNetUnfolderBase]: 223/334 cut-off events. [2023-11-17 11:52:23,516 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-17 11:52:23,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 334 events. 223/334 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 773 event pairs, 138 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 534. Up to 332 conditions per place. [2023-11-17 11:52:23,523 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 25 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-11-17 11:52:23,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 142 flow [2023-11-17 11:52:23,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:52:23,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:52:23,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2023-11-17 11:52:23,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2023-11-17 11:52:23,536 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 46 transitions. [2023-11-17 11:52:23,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 46 transitions. [2023-11-17 11:52:23,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:23,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 46 transitions. [2023-11-17 11:52:23,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 11:52:23,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 11:52:23,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 11:52:23,547 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 3 states and 46 transitions. [2023-11-17 11:52:23,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 142 flow [2023-11-17 11:52:23,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 130 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 11:52:23,555 INFO L231 Difference]: Finished difference. Result has 29 places, 31 transitions, 94 flow [2023-11-17 11:52:23,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=29, PETRI_TRANSITIONS=31} [2023-11-17 11:52:23,560 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-11-17 11:52:23,560 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 31 transitions, 94 flow [2023-11-17 11:52:23,561 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 11:52:23,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:23,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:23,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:52:23,562 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:23,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:23,570 INFO L85 PathProgramCache]: Analyzing trace with hash 267172274, now seen corresponding path program 1 times [2023-11-17 11:52:23,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:23,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915180560] [2023-11-17 11:52:23,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:23,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:23,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 11:52:23,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:23,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915180560] [2023-11-17 11:52:23,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915180560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:23,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:52:23,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:52:23,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115754039] [2023-11-17 11:52:23,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:23,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:52:23,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:23,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:52:23,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:52:23,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:23,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 31 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 11:52:23,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:23,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:23,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:24,008 INFO L124 PetriNetUnfolderBase]: 383/571 cut-off events. [2023-11-17 11:52:24,008 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 11:52:24,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 571 events. 383/571 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1734 event pairs, 138 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 1149. Up to 335 conditions per place. [2023-11-17 11:52:24,014 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 41 selfloop transitions, 2 changer transitions 6/49 dead transitions. [2023-11-17 11:52:24,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 49 transitions, 233 flow [2023-11-17 11:52:24,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:52:24,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:52:24,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2023-11-17 11:52:24,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5784313725490197 [2023-11-17 11:52:24,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 59 transitions. [2023-11-17 11:52:24,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 59 transitions. [2023-11-17 11:52:24,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:24,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 59 transitions. [2023-11-17 11:52:24,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 11:52:24,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 11:52:24,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 11:52:24,021 INFO L175 Difference]: Start difference. First operand has 29 places, 31 transitions, 94 flow. Second operand 3 states and 59 transitions. [2023-11-17 11:52:24,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 49 transitions, 233 flow [2023-11-17 11:52:24,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 49 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:52:24,023 INFO L231 Difference]: Finished difference. Result has 31 places, 32 transitions, 100 flow [2023-11-17 11:52:24,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=32} [2023-11-17 11:52:24,025 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-11-17 11:52:24,025 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 100 flow [2023-11-17 11:52:24,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 11:52:24,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:24,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:24,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:52:24,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:24,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:24,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1927338423, now seen corresponding path program 1 times [2023-11-17 11:52:24,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:24,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764735819] [2023-11-17 11:52:24,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:24,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:24,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 11:52:24,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:24,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764735819] [2023-11-17 11:52:24,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764735819] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:24,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012485802] [2023-11-17 11:52:24,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:24,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:24,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:24,177 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 11:52:24,197 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 11:52:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:24,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 11:52:24,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 11:52:24,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:52:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 11:52:24,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012485802] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:52:24,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:52:24,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-11-17 11:52:24,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129006424] [2023-11-17 11:52:24,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:52:24,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:52:24,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:24,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:52:24,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:52:24,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:24,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 100 flow. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 11:52:24,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:24,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:24,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:24,554 INFO L124 PetriNetUnfolderBase]: 383/580 cut-off events. [2023-11-17 11:52:24,554 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-11-17 11:52:24,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 580 events. 383/580 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1617 event pairs, 256 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 1248. Up to 569 conditions per place. [2023-11-17 11:52:24,557 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 26 selfloop transitions, 15 changer transitions 0/41 dead transitions. [2023-11-17 11:52:24,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 41 transitions, 218 flow [2023-11-17 11:52:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:52:24,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:52:24,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2023-11-17 11:52:24,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35784313725490197 [2023-11-17 11:52:24,559 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 73 transitions. [2023-11-17 11:52:24,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 73 transitions. [2023-11-17 11:52:24,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:24,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 73 transitions. [2023-11-17 11:52:24,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 11:52:24,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 34.0) internal successors, (238), 7 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 11:52:24,561 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 34.0) internal successors, (238), 7 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 11:52:24,561 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 100 flow. Second operand 6 states and 73 transitions. [2023-11-17 11:52:24,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 41 transitions, 218 flow [2023-11-17 11:52:24,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:52:24,563 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 194 flow [2023-11-17 11:52:24,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=38, PETRI_TRANSITIONS=41} [2023-11-17 11:52:24,564 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2023-11-17 11:52:24,564 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 194 flow [2023-11-17 11:52:24,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 11:52:24,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:24,564 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:24,577 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 11:52:24,777 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 11:52:24,778 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:24,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:24,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1024618078, now seen corresponding path program 2 times [2023-11-17 11:52:24,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:24,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954101359] [2023-11-17 11:52:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:24,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-17 11:52:25,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:25,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954101359] [2023-11-17 11:52:25,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954101359] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:25,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191880930] [2023-11-17 11:52:25,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:52:25,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:25,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:25,051 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 11:52:25,068 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 11:52:25,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 11:52:25,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:52:25,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 11:52:25,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-17 11:52:25,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:52:25,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191880930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:25,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:52:25,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-11-17 11:52:25,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334220779] [2023-11-17 11:52:25,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:25,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:52:25,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:25,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:52:25,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:52:25,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:25,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 11:52:25,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:25,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:25,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:25,570 INFO L124 PetriNetUnfolderBase]: 773/1155 cut-off events. [2023-11-17 11:52:25,571 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2023-11-17 11:52:25,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2550 conditions, 1155 events. 773/1155 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4219 event pairs, 256 based on Foata normal form. 1/912 useless extension candidates. Maximal degree in co-relation 2461. Up to 609 conditions per place. [2023-11-17 11:52:25,576 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 67 selfloop transitions, 5 changer transitions 1/73 dead transitions. [2023-11-17 11:52:25,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 73 transitions, 425 flow [2023-11-17 11:52:25,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:52:25,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:52:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2023-11-17 11:52:25,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5514705882352942 [2023-11-17 11:52:25,578 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 75 transitions. [2023-11-17 11:52:25,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 75 transitions. [2023-11-17 11:52:25,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:25,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 75 transitions. [2023-11-17 11:52:25,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 11:52:25,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 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 11:52:25,582 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 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 11:52:25,582 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 194 flow. Second operand 4 states and 75 transitions. [2023-11-17 11:52:25,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 73 transitions, 425 flow [2023-11-17 11:52:25,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 73 transitions, 401 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-17 11:52:25,585 INFO L231 Difference]: Finished difference. Result has 42 places, 45 transitions, 203 flow [2023-11-17 11:52:25,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=42, PETRI_TRANSITIONS=45} [2023-11-17 11:52:25,585 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2023-11-17 11:52:25,586 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 45 transitions, 203 flow [2023-11-17 11:52:25,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 11:52:25,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:25,586 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:25,596 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 11:52:25,786 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 11:52:25,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:25,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:25,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1223475602, now seen corresponding path program 3 times [2023-11-17 11:52:25,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:25,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614894048] [2023-11-17 11:52:25,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:25,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-17 11:52:26,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:26,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614894048] [2023-11-17 11:52:26,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614894048] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:26,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680831160] [2023-11-17 11:52:26,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:52:26,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:26,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:26,015 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 11:52:26,033 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 11:52:26,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-17 11:52:26,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:52:26,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 11:52:26,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:26,224 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-17 11:52:26,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:52:26,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680831160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:26,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:52:26,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-11-17 11:52:26,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027609226] [2023-11-17 11:52:26,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:26,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:52:26,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:26,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:52:26,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:52:26,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:26,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 45 transitions, 203 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 11:52:26,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:26,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:26,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:26,557 INFO L124 PetriNetUnfolderBase]: 1119/1662 cut-off events. [2023-11-17 11:52:26,557 INFO L125 PetriNetUnfolderBase]: For 783/783 co-relation queries the response was YES. [2023-11-17 11:52:26,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4325 conditions, 1662 events. 1119/1662 cut-off events. For 783/783 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6514 event pairs, 426 based on Foata normal form. 1/1661 useless extension candidates. Maximal degree in co-relation 4245. Up to 982 conditions per place. [2023-11-17 11:52:26,565 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 67 selfloop transitions, 7 changer transitions 1/75 dead transitions. [2023-11-17 11:52:26,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 75 transitions, 447 flow [2023-11-17 11:52:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:52:26,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:52:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-17 11:52:26,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367647058823529 [2023-11-17 11:52:26,567 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-17 11:52:26,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-17 11:52:26,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:26,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-17 11:52:26,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 11:52:26,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 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 11:52:26,568 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 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 11:52:26,568 INFO L175 Difference]: Start difference. First operand has 42 places, 45 transitions, 203 flow. Second operand 4 states and 73 transitions. [2023-11-17 11:52:26,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 75 transitions, 447 flow [2023-11-17 11:52:26,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 75 transitions, 447 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:52:26,573 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 252 flow [2023-11-17 11:52:26,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2023-11-17 11:52:26,574 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2023-11-17 11:52:26,574 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 252 flow [2023-11-17 11:52:26,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 11:52:26,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:26,574 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:26,588 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 11:52:26,788 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 11:52:26,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:26,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:26,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2010668642, now seen corresponding path program 1 times [2023-11-17 11:52:26,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:26,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787802004] [2023-11-17 11:52:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:26,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-17 11:52:27,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:27,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787802004] [2023-11-17 11:52:27,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787802004] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:27,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430764630] [2023-11-17 11:52:27,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:27,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:27,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:27,010 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 11:52:27,021 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 11:52:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:27,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 11:52:27,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-17 11:52:27,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:52:27,275 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-17 11:52:27,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430764630] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:52:27,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:52:27,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-17 11:52:27,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755012974] [2023-11-17 11:52:27,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:52:27,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:52:27,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:27,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:52:27,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:52:27,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:27,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 252 flow. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 11:52:27,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:27,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:27,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:27,594 INFO L124 PetriNetUnfolderBase]: 1119/1665 cut-off events. [2023-11-17 11:52:27,594 INFO L125 PetriNetUnfolderBase]: For 1851/1851 co-relation queries the response was YES. [2023-11-17 11:52:27,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4935 conditions, 1665 events. 1119/1665 cut-off events. For 1851/1851 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6385 event pairs, 768 based on Foata normal form. 1/1664 useless extension candidates. Maximal degree in co-relation 4840. Up to 1651 conditions per place. [2023-11-17 11:52:27,604 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 34 selfloop transitions, 18 changer transitions 0/52 dead transitions. [2023-11-17 11:52:27,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 374 flow [2023-11-17 11:52:27,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:52:27,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:52:27,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2023-11-17 11:52:27,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31092436974789917 [2023-11-17 11:52:27,606 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 74 transitions. [2023-11-17 11:52:27,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 74 transitions. [2023-11-17 11:52:27,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:27,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 74 transitions. [2023-11-17 11:52:27,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 11:52:27,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 34.0) internal successors, (272), 8 states have internal predecessors, (272), 0 states have call successors, (0), 0 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 11:52:27,608 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 34.0) internal successors, (272), 8 states have internal predecessors, (272), 0 states have call successors, (0), 0 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 11:52:27,608 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 252 flow. Second operand 7 states and 74 transitions. [2023-11-17 11:52:27,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 374 flow [2023-11-17 11:52:27,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 372 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-17 11:52:27,614 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 318 flow [2023-11-17 11:52:27,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2023-11-17 11:52:27,615 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 22 predicate places. [2023-11-17 11:52:27,615 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 318 flow [2023-11-17 11:52:27,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 11:52:27,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:27,616 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:27,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:27,822 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 11:52:27,822 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:27,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:27,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2070507427, now seen corresponding path program 2 times [2023-11-17 11:52:27,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:27,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367843035] [2023-11-17 11:52:27,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:27,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:28,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:28,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367843035] [2023-11-17 11:52:28,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367843035] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:28,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103394183] [2023-11-17 11:52:28,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:52:28,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:28,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:28,154 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 11:52:28,174 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 11:52:28,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 11:52:28,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:52:28,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 11:52:28,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:28,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:52:28,422 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:28,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103394183] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:28,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:52:28,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 10 [2023-11-17 11:52:28,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283050751] [2023-11-17 11:52:28,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:28,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:52:28,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:28,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:52:28,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-17 11:52:28,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:28,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 318 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:28,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:28,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:28,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:28,820 INFO L124 PetriNetUnfolderBase]: 1189/1767 cut-off events. [2023-11-17 11:52:28,821 INFO L125 PetriNetUnfolderBase]: For 1575/1575 co-relation queries the response was YES. [2023-11-17 11:52:28,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5256 conditions, 1767 events. 1189/1767 cut-off events. For 1575/1575 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7328 event pairs, 124 based on Foata normal form. 32/1799 useless extension candidates. Maximal degree in co-relation 5140. Up to 753 conditions per place. [2023-11-17 11:52:28,832 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 84 selfloop transitions, 9 changer transitions 0/93 dead transitions. [2023-11-17 11:52:28,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 93 transitions, 643 flow [2023-11-17 11:52:28,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:52:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:52:28,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2023-11-17 11:52:28,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176470588235295 [2023-11-17 11:52:28,834 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 88 transitions. [2023-11-17 11:52:28,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 88 transitions. [2023-11-17 11:52:28,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:28,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 88 transitions. [2023-11-17 11:52:28,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 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 11:52:28,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:28,837 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:28,837 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 318 flow. Second operand 5 states and 88 transitions. [2023-11-17 11:52:28,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 93 transitions, 643 flow [2023-11-17 11:52:28,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 93 transitions, 607 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-17 11:52:28,844 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 329 flow [2023-11-17 11:52:28,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=329, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2023-11-17 11:52:28,846 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 24 predicate places. [2023-11-17 11:52:28,846 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 329 flow [2023-11-17 11:52:28,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:28,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:28,846 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:28,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:29,052 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 11:52:29,053 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:29,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:29,053 INFO L85 PathProgramCache]: Analyzing trace with hash 551144123, now seen corresponding path program 1 times [2023-11-17 11:52:29,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:29,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146036596] [2023-11-17 11:52:29,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:29,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:29,416 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:29,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:29,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146036596] [2023-11-17 11:52:29,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146036596] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:29,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038053950] [2023-11-17 11:52:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:29,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:29,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:29,418 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 11:52:29,444 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 11:52:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:29,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 11:52:29,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:29,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:52:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:29,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038053950] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:29,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:52:29,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 10 [2023-11-17 11:52:29,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783648757] [2023-11-17 11:52:29,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:29,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:52:29,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:29,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:52:29,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-17 11:52:29,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:29,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 329 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:29,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:29,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:29,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:30,009 INFO L124 PetriNetUnfolderBase]: 1255/1861 cut-off events. [2023-11-17 11:52:30,009 INFO L125 PetriNetUnfolderBase]: For 3043/3043 co-relation queries the response was YES. [2023-11-17 11:52:30,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6162 conditions, 1861 events. 1255/1861 cut-off events. For 3043/3043 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7563 event pairs, 224 based on Foata normal form. 28/1889 useless extension candidates. Maximal degree in co-relation 6060. Up to 751 conditions per place. [2023-11-17 11:52:30,054 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 80 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2023-11-17 11:52:30,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 91 transitions, 650 flow [2023-11-17 11:52:30,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:52:30,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:52:30,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2023-11-17 11:52:30,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49411764705882355 [2023-11-17 11:52:30,056 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 84 transitions. [2023-11-17 11:52:30,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 84 transitions. [2023-11-17 11:52:30,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:30,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 84 transitions. [2023-11-17 11:52:30,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 11:52:30,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:30,057 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:30,057 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 329 flow. Second operand 5 states and 84 transitions. [2023-11-17 11:52:30,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 91 transitions, 650 flow [2023-11-17 11:52:30,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 91 transitions, 631 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 11:52:30,071 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 368 flow [2023-11-17 11:52:30,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=368, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-11-17 11:52:30,072 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 28 predicate places. [2023-11-17 11:52:30,073 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 368 flow [2023-11-17 11:52:30,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:30,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:30,073 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:30,079 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 11:52:30,279 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 11:52:30,280 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:30,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:30,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1532228727, now seen corresponding path program 2 times [2023-11-17 11:52:30,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:30,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291710711] [2023-11-17 11:52:30,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:30,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:30,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:30,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291710711] [2023-11-17 11:52:30,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291710711] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:30,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909799119] [2023-11-17 11:52:30,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:52:30,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:30,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:30,609 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 11:52:30,613 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 11:52:30,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 11:52:30,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:52:30,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 11:52:30,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:30,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:52:30,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909799119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:30,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:52:30,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 11:52:30,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728322825] [2023-11-17 11:52:30,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:30,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:52:30,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:30,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:52:30,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:52:30,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:30,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 368 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:30,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:30,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:30,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:31,251 INFO L124 PetriNetUnfolderBase]: 1283/1927 cut-off events. [2023-11-17 11:52:31,252 INFO L125 PetriNetUnfolderBase]: For 4128/4128 co-relation queries the response was YES. [2023-11-17 11:52:31,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6762 conditions, 1927 events. 1283/1927 cut-off events. For 4128/4128 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 8153 event pairs, 382 based on Foata normal form. 18/1945 useless extension candidates. Maximal degree in co-relation 6657. Up to 1043 conditions per place. [2023-11-17 11:52:31,262 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 75 selfloop transitions, 8 changer transitions 14/97 dead transitions. [2023-11-17 11:52:31,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 97 transitions, 718 flow [2023-11-17 11:52:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:52:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:52:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2023-11-17 11:52:31,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117647058823529 [2023-11-17 11:52:31,264 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 87 transitions. [2023-11-17 11:52:31,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 87 transitions. [2023-11-17 11:52:31,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:31,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 87 transitions. [2023-11-17 11:52:31,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 11:52:31,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:31,267 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:31,267 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 368 flow. Second operand 5 states and 87 transitions. [2023-11-17 11:52:31,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 97 transitions, 718 flow [2023-11-17 11:52:31,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 97 transitions, 696 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 11:52:31,280 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 385 flow [2023-11-17 11:52:31,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2023-11-17 11:52:31,282 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2023-11-17 11:52:31,282 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 385 flow [2023-11-17 11:52:31,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:31,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:31,282 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:31,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:31,494 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 11:52:31,494 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:31,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:31,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1321320105, now seen corresponding path program 3 times [2023-11-17 11:52:31,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:31,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159269446] [2023-11-17 11:52:31,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:31,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:31,849 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:31,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:31,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159269446] [2023-11-17 11:52:31,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159269446] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:31,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731617022] [2023-11-17 11:52:31,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:52:31,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:31,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:31,851 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 11:52:31,873 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 11:52:32,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 11:52:32,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:52:32,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 11:52:32,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:32,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:52:32,299 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:32,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731617022] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:32,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:52:32,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 11 [2023-11-17 11:52:32,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459761508] [2023-11-17 11:52:32,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:32,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:52:32,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:32,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:52:32,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:52:32,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:32,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 385 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:32,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:32,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:32,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:32,728 INFO L124 PetriNetUnfolderBase]: 1349/2022 cut-off events. [2023-11-17 11:52:32,728 INFO L125 PetriNetUnfolderBase]: For 5207/5207 co-relation queries the response was YES. [2023-11-17 11:52:32,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7735 conditions, 2022 events. 1349/2022 cut-off events. For 5207/5207 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8552 event pairs, 454 based on Foata normal form. 28/2050 useless extension candidates. Maximal degree in co-relation 7627. Up to 1071 conditions per place. [2023-11-17 11:52:32,744 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 87 selfloop transitions, 10 changer transitions 1/98 dead transitions. [2023-11-17 11:52:32,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 98 transitions, 735 flow [2023-11-17 11:52:32,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:52:32,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:52:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2023-11-17 11:52:32,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5411764705882353 [2023-11-17 11:52:32,745 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 92 transitions. [2023-11-17 11:52:32,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 92 transitions. [2023-11-17 11:52:32,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:32,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 92 transitions. [2023-11-17 11:52:32,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 11:52:32,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:32,747 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:32,747 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 385 flow. Second operand 5 states and 92 transitions. [2023-11-17 11:52:32,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 98 transitions, 735 flow [2023-11-17 11:52:32,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 98 transitions, 715 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-17 11:52:32,764 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 403 flow [2023-11-17 11:52:32,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=403, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2023-11-17 11:52:32,765 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 35 predicate places. [2023-11-17 11:52:32,765 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 403 flow [2023-11-17 11:52:32,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:32,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:32,766 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:32,772 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 11:52:32,972 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,SelfDestructingSolverStorable9 [2023-11-17 11:52:32,972 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:32,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:32,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1098045791, now seen corresponding path program 3 times [2023-11-17 11:52:32,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:32,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845910154] [2023-11-17 11:52:32,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:32,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:33,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:33,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845910154] [2023-11-17 11:52:33,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845910154] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:33,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781534762] [2023-11-17 11:52:33,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:52:33,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:33,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:33,242 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 11:52:33,261 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 11:52:33,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 11:52:33,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:52:33,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 11:52:33,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:33,462 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:33,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:52:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:33,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781534762] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:33,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:52:33,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 11 [2023-11-17 11:52:33,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266650529] [2023-11-17 11:52:33,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:33,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:52:33,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:33,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:52:33,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:52:33,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:33,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 403 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:33,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:33,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:33,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:33,979 INFO L124 PetriNetUnfolderBase]: 1527/2299 cut-off events. [2023-11-17 11:52:33,980 INFO L125 PetriNetUnfolderBase]: For 5472/5472 co-relation queries the response was YES. [2023-11-17 11:52:33,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8700 conditions, 2299 events. 1527/2299 cut-off events. For 5472/5472 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10218 event pairs, 182 based on Foata normal form. 32/2331 useless extension candidates. Maximal degree in co-relation 8592. Up to 1589 conditions per place. [2023-11-17 11:52:34,001 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 85 selfloop transitions, 13 changer transitions 1/99 dead transitions. [2023-11-17 11:52:34,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 99 transitions, 764 flow [2023-11-17 11:52:34,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:52:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:52:34,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2023-11-17 11:52:34,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058823529411764 [2023-11-17 11:52:34,003 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 86 transitions. [2023-11-17 11:52:34,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 86 transitions. [2023-11-17 11:52:34,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:34,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 86 transitions. [2023-11-17 11:52:34,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 11:52:34,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:34,004 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:34,004 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 403 flow. Second operand 5 states and 86 transitions. [2023-11-17 11:52:34,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 99 transitions, 764 flow [2023-11-17 11:52:34,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 99 transitions, 742 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-17 11:52:34,020 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 447 flow [2023-11-17 11:52:34,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=447, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2023-11-17 11:52:34,020 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 38 predicate places. [2023-11-17 11:52:34,021 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 447 flow [2023-11-17 11:52:34,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:34,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:34,021 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:34,030 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 11:52:34,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:34,228 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:34,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:34,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2000256057, now seen corresponding path program 4 times [2023-11-17 11:52:34,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:34,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075691933] [2023-11-17 11:52:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:34,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:34,500 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:34,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:34,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075691933] [2023-11-17 11:52:34,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075691933] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:34,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138849274] [2023-11-17 11:52:34,501 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:52:34,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:34,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:34,502 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:34,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 11:52:34,692 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:52:34,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:52:34,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 11:52:34,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:34,724 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:34,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:52:34,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138849274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:34,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:52:34,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 11:52:34,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96293395] [2023-11-17 11:52:34,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:34,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:52:34,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:34,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:52:34,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:52:34,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:34,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 447 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:34,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:34,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:34,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:35,180 INFO L124 PetriNetUnfolderBase]: 1475/2212 cut-off events. [2023-11-17 11:52:35,181 INFO L125 PetriNetUnfolderBase]: For 6788/6788 co-relation queries the response was YES. [2023-11-17 11:52:35,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8953 conditions, 2212 events. 1475/2212 cut-off events. For 6788/6788 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9614 event pairs, 522 based on Foata normal form. 14/2226 useless extension candidates. Maximal degree in co-relation 8842. Up to 1261 conditions per place. [2023-11-17 11:52:35,204 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 76 selfloop transitions, 10 changer transitions 12/98 dead transitions. [2023-11-17 11:52:35,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 98 transitions, 778 flow [2023-11-17 11:52:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:52:35,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:52:35,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2023-11-17 11:52:35,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176470588235295 [2023-11-17 11:52:35,206 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 88 transitions. [2023-11-17 11:52:35,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 88 transitions. [2023-11-17 11:52:35,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:35,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 88 transitions. [2023-11-17 11:52:35,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 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 11:52:35,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:35,207 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:35,207 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 447 flow. Second operand 5 states and 88 transitions. [2023-11-17 11:52:35,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 98 transitions, 778 flow [2023-11-17 11:52:35,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 98 transitions, 769 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 11:52:35,227 INFO L231 Difference]: Finished difference. Result has 74 places, 61 transitions, 463 flow [2023-11-17 11:52:35,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=463, PETRI_PLACES=74, PETRI_TRANSITIONS=61} [2023-11-17 11:52:35,228 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2023-11-17 11:52:35,228 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 61 transitions, 463 flow [2023-11-17 11:52:35,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:35,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:35,228 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:35,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:35,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-17 11:52:35,435 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:35,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:35,435 INFO L85 PathProgramCache]: Analyzing trace with hash 341612341, now seen corresponding path program 4 times [2023-11-17 11:52:35,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:35,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108979616] [2023-11-17 11:52:35,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:35,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:35,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:35,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108979616] [2023-11-17 11:52:35,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108979616] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:35,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885389269] [2023-11-17 11:52:35,695 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:52:35,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:35,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:35,696 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:35,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-17 11:52:35,886 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:52:35,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:52:35,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 11:52:35,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:35,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:52:35,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885389269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:35,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:52:35,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 11:52:35,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509956910] [2023-11-17 11:52:35,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:35,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:52:35,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:35,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:52:35,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:52:35,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:35,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 61 transitions, 463 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:35,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:35,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:35,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:36,295 INFO L124 PetriNetUnfolderBase]: 1355/2019 cut-off events. [2023-11-17 11:52:36,296 INFO L125 PetriNetUnfolderBase]: For 6976/6976 co-relation queries the response was YES. [2023-11-17 11:52:36,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8628 conditions, 2019 events. 1355/2019 cut-off events. For 6976/6976 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8486 event pairs, 518 based on Foata normal form. 18/2037 useless extension candidates. Maximal degree in co-relation 8516. Up to 1261 conditions per place. [2023-11-17 11:52:36,316 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 73 selfloop transitions, 10 changer transitions 10/93 dead transitions. [2023-11-17 11:52:36,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 93 transitions, 762 flow [2023-11-17 11:52:36,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:52:36,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:52:36,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2023-11-17 11:52:36,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48823529411764705 [2023-11-17 11:52:36,319 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 83 transitions. [2023-11-17 11:52:36,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 83 transitions. [2023-11-17 11:52:36,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:36,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 83 transitions. [2023-11-17 11:52:36,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 11:52:36,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:36,320 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:36,320 INFO L175 Difference]: Start difference. First operand has 74 places, 61 transitions, 463 flow. Second operand 5 states and 83 transitions. [2023-11-17 11:52:36,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 93 transitions, 762 flow [2023-11-17 11:52:36,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 93 transitions, 734 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-17 11:52:36,344 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 462 flow [2023-11-17 11:52:36,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=462, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2023-11-17 11:52:36,345 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 43 predicate places. [2023-11-17 11:52:36,345 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 462 flow [2023-11-17 11:52:36,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:36,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:36,345 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:36,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:36,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-17 11:52:36,549 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:36,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:36,549 INFO L85 PathProgramCache]: Analyzing trace with hash -304975493, now seen corresponding path program 5 times [2023-11-17 11:52:36,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:36,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355039843] [2023-11-17 11:52:36,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:36,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:36,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:36,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355039843] [2023-11-17 11:52:36,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355039843] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:36,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153748433] [2023-11-17 11:52:36,835 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 11:52:36,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:36,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:36,837 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:36,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-17 11:52:37,121 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 11:52:37,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:52:37,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 11:52:37,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:37,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:52:37,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153748433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:37,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:52:37,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 11:52:37,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175319296] [2023-11-17 11:52:37,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:37,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:52:37,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:37,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:52:37,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:52:37,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:37,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 462 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:37,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:37,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:37,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:37,577 INFO L124 PetriNetUnfolderBase]: 1318/1964 cut-off events. [2023-11-17 11:52:37,577 INFO L125 PetriNetUnfolderBase]: For 7596/7596 co-relation queries the response was YES. [2023-11-17 11:52:37,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8466 conditions, 1964 events. 1318/1964 cut-off events. For 7596/7596 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8070 event pairs, 498 based on Foata normal form. 18/1982 useless extension candidates. Maximal degree in co-relation 8353. Up to 1233 conditions per place. [2023-11-17 11:52:37,588 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 72 selfloop transitions, 11 changer transitions 12/95 dead transitions. [2023-11-17 11:52:37,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 95 transitions, 783 flow [2023-11-17 11:52:37,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:52:37,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:52:37,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2023-11-17 11:52:37,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49411764705882355 [2023-11-17 11:52:37,590 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 84 transitions. [2023-11-17 11:52:37,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 84 transitions. [2023-11-17 11:52:37,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:37,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 84 transitions. [2023-11-17 11:52:37,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 11:52:37,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:37,591 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:37,591 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 462 flow. Second operand 5 states and 84 transitions. [2023-11-17 11:52:37,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 95 transitions, 783 flow [2023-11-17 11:52:37,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 95 transitions, 761 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-17 11:52:37,609 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 467 flow [2023-11-17 11:52:37,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=467, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2023-11-17 11:52:37,610 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2023-11-17 11:52:37,610 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 467 flow [2023-11-17 11:52:37,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:37,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:37,610 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:37,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-17 11:52:37,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-17 11:52:37,818 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:37,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:37,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1209976085, now seen corresponding path program 6 times [2023-11-17 11:52:37,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:37,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832870286] [2023-11-17 11:52:37,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:37,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:38,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:38,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832870286] [2023-11-17 11:52:38,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832870286] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:38,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627002544] [2023-11-17 11:52:38,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 11:52:38,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:38,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:38,054 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:38,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-17 11:52:38,263 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 11:52:38,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:52:38,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 11:52:38,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:38,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:52:38,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627002544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:38,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:52:38,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 11:52:38,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147898429] [2023-11-17 11:52:38,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:38,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:52:38,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:38,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:52:38,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:52:38,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:38,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 467 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:38,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:38,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:38,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:38,698 INFO L124 PetriNetUnfolderBase]: 1188/1757 cut-off events. [2023-11-17 11:52:38,698 INFO L125 PetriNetUnfolderBase]: For 7165/7165 co-relation queries the response was YES. [2023-11-17 11:52:38,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7609 conditions, 1757 events. 1188/1757 cut-off events. For 7165/7165 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6932 event pairs, 412 based on Foata normal form. 28/1785 useless extension candidates. Maximal degree in co-relation 7495. Up to 1040 conditions per place. [2023-11-17 11:52:38,710 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 80 selfloop transitions, 12 changer transitions 1/93 dead transitions. [2023-11-17 11:52:38,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 93 transitions, 779 flow [2023-11-17 11:52:38,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:52:38,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:52:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2023-11-17 11:52:38,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2023-11-17 11:52:38,711 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 82 transitions. [2023-11-17 11:52:38,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 82 transitions. [2023-11-17 11:52:38,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:38,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 82 transitions. [2023-11-17 11:52:38,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 11:52:38,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:38,713 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:38,713 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 467 flow. Second operand 5 states and 82 transitions. [2023-11-17 11:52:38,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 93 transitions, 779 flow [2023-11-17 11:52:38,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 93 transitions, 753 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-17 11:52:38,731 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 468 flow [2023-11-17 11:52:38,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=468, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2023-11-17 11:52:38,732 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 45 predicate places. [2023-11-17 11:52:38,732 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 468 flow [2023-11-17 11:52:38,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:38,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:38,733 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:38,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:38,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-17 11:52:38,939 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:38,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:38,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1657739961, now seen corresponding path program 5 times [2023-11-17 11:52:38,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:38,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691186409] [2023-11-17 11:52:38,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:38,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:39,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:39,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691186409] [2023-11-17 11:52:39,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691186409] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:39,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004486443] [2023-11-17 11:52:39,208 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 11:52:39,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:39,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:39,209 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:39,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-17 11:52:39,678 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 11:52:39,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:52:39,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 11:52:39,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:39,722 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:39,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:52:39,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004486443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:39,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:52:39,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 11:52:39,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576720813] [2023-11-17 11:52:39,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:39,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:52:39,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:39,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:52:39,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:52:39,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:39,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 468 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:39,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:39,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:39,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:40,104 INFO L124 PetriNetUnfolderBase]: 1117/1658 cut-off events. [2023-11-17 11:52:40,105 INFO L125 PetriNetUnfolderBase]: For 6461/6461 co-relation queries the response was YES. [2023-11-17 11:52:40,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7233 conditions, 1658 events. 1117/1658 cut-off events. For 6461/6461 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6461 event pairs, 379 based on Foata normal form. 32/1690 useless extension candidates. Maximal degree in co-relation 7118. Up to 1053 conditions per place. [2023-11-17 11:52:40,116 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 83 selfloop transitions, 12 changer transitions 0/95 dead transitions. [2023-11-17 11:52:40,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 95 transitions, 789 flow [2023-11-17 11:52:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:52:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:52:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2023-11-17 11:52:40,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49411764705882355 [2023-11-17 11:52:40,117 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 84 transitions. [2023-11-17 11:52:40,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 84 transitions. [2023-11-17 11:52:40,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:40,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 84 transitions. [2023-11-17 11:52:40,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 11:52:40,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:40,119 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:40,119 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 468 flow. Second operand 5 states and 84 transitions. [2023-11-17 11:52:40,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 95 transitions, 789 flow [2023-11-17 11:52:40,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 95 transitions, 742 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-11-17 11:52:40,136 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 464 flow [2023-11-17 11:52:40,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=464, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-11-17 11:52:40,137 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 41 predicate places. [2023-11-17 11:52:40,137 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 464 flow [2023-11-17 11:52:40,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:40,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:40,137 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:40,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:40,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:40,344 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:40,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:40,345 INFO L85 PathProgramCache]: Analyzing trace with hash -934344425, now seen corresponding path program 6 times [2023-11-17 11:52:40,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:40,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245261282] [2023-11-17 11:52:40,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:40,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:40,613 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:40,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:40,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245261282] [2023-11-17 11:52:40,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245261282] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:40,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642487139] [2023-11-17 11:52:40,614 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 11:52:40,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:40,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:40,615 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:40,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-17 11:52:41,027 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 11:52:41,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:52:41,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 11:52:41,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:41,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:52:41,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642487139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:41,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:52:41,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 11:52:41,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545126515] [2023-11-17 11:52:41,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:41,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:52:41,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:41,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:52:41,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:52:41,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:41,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 464 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:41,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:41,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:41,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:41,405 INFO L124 PetriNetUnfolderBase]: 1122/1677 cut-off events. [2023-11-17 11:52:41,405 INFO L125 PetriNetUnfolderBase]: For 5859/5859 co-relation queries the response was YES. [2023-11-17 11:52:41,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7160 conditions, 1677 events. 1122/1677 cut-off events. For 5859/5859 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6645 event pairs, 379 based on Foata normal form. 14/1691 useless extension candidates. Maximal degree in co-relation 7048. Up to 1053 conditions per place. [2023-11-17 11:52:41,434 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 77 selfloop transitions, 11 changer transitions 8/96 dead transitions. [2023-11-17 11:52:41,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 96 transitions, 792 flow [2023-11-17 11:52:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:52:41,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:52:41,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2023-11-17 11:52:41,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4764705882352941 [2023-11-17 11:52:41,435 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 81 transitions. [2023-11-17 11:52:41,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 81 transitions. [2023-11-17 11:52:41,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:41,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 81 transitions. [2023-11-17 11:52:41,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 11:52:41,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:41,437 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:41,437 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 464 flow. Second operand 5 states and 81 transitions. [2023-11-17 11:52:41,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 96 transitions, 792 flow [2023-11-17 11:52:41,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 758 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-17 11:52:41,453 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 484 flow [2023-11-17 11:52:41,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=484, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2023-11-17 11:52:41,453 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 45 predicate places. [2023-11-17 11:52:41,453 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 484 flow [2023-11-17 11:52:41,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:41,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:41,454 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:41,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:41,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-17 11:52:41,660 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:41,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:41,660 INFO L85 PathProgramCache]: Analyzing trace with hash -60603745, now seen corresponding path program 7 times [2023-11-17 11:52:41,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:41,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995660781] [2023-11-17 11:52:41,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:41,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:41,882 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:41,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:41,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995660781] [2023-11-17 11:52:41,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995660781] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:41,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190540807] [2023-11-17 11:52:41,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 11:52:41,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:41,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:41,885 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:41,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-17 11:52:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:42,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 11:52:42,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:42,147 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:52:42,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:52:42,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190540807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:42,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:52:42,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-17 11:52:42,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124852583] [2023-11-17 11:52:42,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:42,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:52:42,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:42,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:52:42,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:52:42,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 34 [2023-11-17 11:52:42,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 484 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:42,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:42,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 34 [2023-11-17 11:52:42,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:42,464 INFO L124 PetriNetUnfolderBase]: 1051/1557 cut-off events. [2023-11-17 11:52:42,465 INFO L125 PetriNetUnfolderBase]: For 6038/6038 co-relation queries the response was YES. [2023-11-17 11:52:42,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6926 conditions, 1557 events. 1051/1557 cut-off events. For 6038/6038 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5941 event pairs, 379 based on Foata normal form. 14/1571 useless extension candidates. Maximal degree in co-relation 6811. Up to 1053 conditions per place. [2023-11-17 11:52:42,475 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 68 selfloop transitions, 12 changer transitions 9/89 dead transitions. [2023-11-17 11:52:42,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 754 flow [2023-11-17 11:52:42,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:52:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:52:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2023-11-17 11:52:42,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45294117647058824 [2023-11-17 11:52:42,476 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 77 transitions. [2023-11-17 11:52:42,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 77 transitions. [2023-11-17 11:52:42,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:42,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 77 transitions. [2023-11-17 11:52:42,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:52:42,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:42,477 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 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 11:52:42,477 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 484 flow. Second operand 5 states and 77 transitions. [2023-11-17 11:52:42,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 754 flow [2023-11-17 11:52:42,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 89 transitions, 728 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-17 11:52:42,501 INFO L231 Difference]: Finished difference. Result has 78 places, 62 transitions, 468 flow [2023-11-17 11:52:42,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=468, PETRI_PLACES=78, PETRI_TRANSITIONS=62} [2023-11-17 11:52:42,501 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 46 predicate places. [2023-11-17 11:52:42,501 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 62 transitions, 468 flow [2023-11-17 11:52:42,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:52:42,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:42,502 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:52:42,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:42,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-17 11:52:42,708 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:42,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:42,709 INFO L85 PathProgramCache]: Analyzing trace with hash -307106183, now seen corresponding path program 1 times [2023-11-17 11:52:42,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:42,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540357708] [2023-11-17 11:52:42,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:42,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:42,990 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-17 11:52:42,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:42,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540357708] [2023-11-17 11:52:42,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540357708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:42,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527955748] [2023-11-17 11:52:42,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:42,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:42,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:42,991 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:43,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-17 11:52:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:43,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-17 11:52:43,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:43,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 82 [2023-11-17 11:52:43,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:52:43,579 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 11:52:43,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 20 [2023-11-17 11:52:43,837 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:52:43,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-11-17 11:52:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:52:43,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:52:46,063 INFO L349 Elim1Store]: treesize reduction 15, result has 97.0 percent of original size [2023-11-17 11:52:46,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 1082 treesize of output 1295 [2023-11-17 11:52:46,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:52:46,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 865 treesize of output 866 [2023-11-17 11:52:46,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:52:46,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 841 treesize of output 842 [2023-11-17 11:52:46,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:52:46,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 817 treesize of output 818 [2023-11-17 11:52:46,746 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:52:46,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 793 treesize of output 794 [2023-11-17 11:52:46,917 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:52:46,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 769 treesize of output 778 [2023-11-17 11:52:47,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:52:47,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 753 treesize of output 762 [2023-11-17 11:56:20,384 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-17 11:56:20,384 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 101 [2023-11-17 11:56:20,385 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-17 11:56:20,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-17 11:56:20,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:56:20,586 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:268) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:410) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:394) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2023-11-17 11:56:20,589 INFO L158 Benchmark]: Toolchain (without parser) took 239701.50ms. Allocated memory was 265.3MB in the beginning and 1.2GB in the end (delta: 909.1MB). Free memory was 216.7MB in the beginning and 838.0MB in the end (delta: -621.4MB). Peak memory consumption was 716.4MB. Max. memory is 8.0GB. [2023-11-17 11:56:20,589 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 182.5MB. Free memory is still 136.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:56:20,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.65ms. Allocated memory is still 265.3MB. Free memory was 216.7MB in the beginning and 204.4MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-11-17 11:56:20,590 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.23ms. Allocated memory is still 265.3MB. Free memory was 204.4MB in the beginning and 201.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:56:20,590 INFO L158 Benchmark]: Boogie Preprocessor took 66.33ms. Allocated memory is still 265.3MB. Free memory was 201.7MB in the beginning and 199.2MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 11:56:20,590 INFO L158 Benchmark]: RCFGBuilder took 1090.16ms. Allocated memory is still 265.3MB. Free memory was 199.2MB in the beginning and 172.3MB in the end (delta: 26.9MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-11-17 11:56:20,590 INFO L158 Benchmark]: TraceAbstraction took 238149.65ms. Allocated memory was 265.3MB in the beginning and 1.2GB in the end (delta: 909.1MB). Free memory was 171.8MB in the beginning and 838.0MB in the end (delta: -666.3MB). Peak memory consumption was 670.3MB. Max. memory is 8.0GB. [2023-11-17 11:56:20,591 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 182.5MB. Free memory is still 136.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 326.65ms. Allocated memory is still 265.3MB. Free memory was 216.7MB in the beginning and 204.4MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.23ms. Allocated memory is still 265.3MB. Free memory was 204.4MB in the beginning and 201.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 66.33ms. Allocated memory is still 265.3MB. Free memory was 201.7MB in the beginning and 199.2MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1090.16ms. Allocated memory is still 265.3MB. Free memory was 199.2MB in the beginning and 172.3MB in the end (delta: 26.9MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * TraceAbstraction took 238149.65ms. Allocated memory was 265.3MB in the beginning and 1.2GB in the end (delta: 909.1MB). Free memory was 171.8MB in the beginning and 838.0MB in the end (delta: -666.3MB). Peak memory consumption was 670.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 33 PlacesBefore, 32 PlacesAfterwards, 29 TransitionsBefore, 28 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 138 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 128, independent: 124, independent conditional: 0, independent unconditional: 124, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 61, independent: 59, independent conditional: 0, independent unconditional: 59, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 61, independent: 59, independent conditional: 0, independent unconditional: 59, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 14, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 128, independent: 65, independent conditional: 0, independent unconditional: 65, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 61, unknown conditional: 0, unknown unconditional: 61] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...