/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:03:59,213 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:03:59,265 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 15:03:59,293 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:03:59,294 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:03:59,294 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:03:59,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:03:59,295 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:03:59,295 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:03:59,298 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:03:59,298 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:03:59,298 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:03:59,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:03:59,300 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:03:59,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:03:59,300 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:03:59,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:03:59,300 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:03:59,300 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:03:59,300 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:03:59,300 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:03:59,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:03:59,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:03:59,301 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:03:59,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:03:59,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:03:59,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:03:59,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:03:59,302 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:03:59,302 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:03:59,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:03:59,303 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:03:59,303 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:03:59,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:03:59,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:03:59,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:03:59,501 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:03:59,502 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:03:59,503 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-11-17 15:04:00,447 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:04:00,610 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:04:00,611 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-11-17 15:04:00,621 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e59e00df/74a283bd0bea49198e004d2829bf9bc4/FLAG6af2609ed [2023-11-17 15:04:01,000 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e59e00df/74a283bd0bea49198e004d2829bf9bc4 [2023-11-17 15:04:01,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:04:01,003 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:04:01,004 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:04:01,004 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:04:01,006 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:04:01,007 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:04:01" (1/1) ... [2023-11-17 15:04:01,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a8ef74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:01, skipping insertion in model container [2023-11-17 15:04:01,008 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:04:01" (1/1) ... [2023-11-17 15:04:01,035 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:04:01,231 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2023-11-17 15:04:01,235 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:04:01,241 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:04:01,283 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2023-11-17 15:04:01,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:04:01,302 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:04:01,302 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:04:01,307 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:04:01,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:01 WrapperNode [2023-11-17 15:04:01,308 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:04:01,308 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:04:01,308 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:04:01,308 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:04:01,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:01" (1/1) ... [2023-11-17 15:04:01,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:01" (1/1) ... [2023-11-17 15:04:01,350 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2023-11-17 15:04:01,350 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:04:01,351 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:04:01,351 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:04:01,351 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:04:01,356 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:01" (1/1) ... [2023-11-17 15:04:01,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:01" (1/1) ... [2023-11-17 15:04:01,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:01" (1/1) ... [2023-11-17 15:04:01,360 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:01" (1/1) ... [2023-11-17 15:04:01,374 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:01" (1/1) ... [2023-11-17 15:04:01,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:01" (1/1) ... [2023-11-17 15:04:01,380 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:01" (1/1) ... [2023-11-17 15:04:01,381 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:01" (1/1) ... [2023-11-17 15:04:01,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:04:01,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:04:01,386 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:04:01,386 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:04:01,387 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:01" (1/1) ... [2023-11-17 15:04:01,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:04:01,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:01,414 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 15:04:01,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 15:04:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-17 15:04:01,437 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-17 15:04:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-17 15:04:01,438 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-17 15:04:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:04:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:04:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:04:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:04:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:04:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:04:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:04:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:04:01,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:04:01,440 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:04:01,541 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:04:01,543 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:04:01,629 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:04:01,650 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:04:01,651 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 15:04:01,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:04:01 BoogieIcfgContainer [2023-11-17 15:04:01,652 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:04:01,655 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:04:01,655 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:04:01,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:04:01,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:04:01" (1/3) ... [2023-11-17 15:04:01,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1bd980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:04:01, skipping insertion in model container [2023-11-17 15:04:01,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:01" (2/3) ... [2023-11-17 15:04:01,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1bd980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:04:01, skipping insertion in model container [2023-11-17 15:04:01,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:04:01" (3/3) ... [2023-11-17 15:04:01,659 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2023-11-17 15:04:01,670 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:04:01,671 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:04:01,671 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:04:01,732 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:04:01,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 69 transitions, 146 flow [2023-11-17 15:04:01,777 INFO L124 PetriNetUnfolderBase]: 5/67 cut-off events. [2023-11-17 15:04:01,777 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:04:01,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 67 events. 5/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-17 15:04:01,780 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 69 transitions, 146 flow [2023-11-17 15:04:01,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 67 transitions, 140 flow [2023-11-17 15:04:01,785 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:04:01,797 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 67 transitions, 140 flow [2023-11-17 15:04:01,799 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 67 transitions, 140 flow [2023-11-17 15:04:01,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 67 transitions, 140 flow [2023-11-17 15:04:01,811 INFO L124 PetriNetUnfolderBase]: 5/67 cut-off events. [2023-11-17 15:04:01,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:04:01,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 67 events. 5/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-17 15:04:01,813 INFO L119 LiptonReduction]: Number of co-enabled transitions 1296 [2023-11-17 15:04:03,417 INFO L134 LiptonReduction]: Checked pairs total: 1192 [2023-11-17 15:04:03,417 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-11-17 15:04:03,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:04:03,431 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;@50310bc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:04:03,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 15:04:03,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:04:03,434 INFO L124 PetriNetUnfolderBase]: 3/13 cut-off events. [2023-11-17 15:04:03,434 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:04:03,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:03,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 15:04:03,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:03,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:03,438 INFO L85 PathProgramCache]: Analyzing trace with hash -425197577, now seen corresponding path program 1 times [2023-11-17 15:04:03,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:03,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640780036] [2023-11-17 15:04:03,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:03,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:03,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:03,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640780036] [2023-11-17 15:04:03,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640780036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:04:03,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:04:03,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:04:03,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390203717] [2023-11-17 15:04:03,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:04:03,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:04:03,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:03,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:04:03,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:04:03,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:03,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:03,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:03,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:03,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:03,888 INFO L124 PetriNetUnfolderBase]: 124/200 cut-off events. [2023-11-17 15:04:03,889 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 15:04:03,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 200 events. 124/200 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 587 event pairs, 24 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 406. Up to 122 conditions per place. [2023-11-17 15:04:03,891 INFO L140 encePairwiseOnDemand]: 124/131 looper letters, 23 selfloop transitions, 7 changer transitions 5/35 dead transitions. [2023-11-17 15:04:03,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 35 transitions, 149 flow [2023-11-17 15:04:03,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:04:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:04:03,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 304 transitions. [2023-11-17 15:04:03,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46412213740458014 [2023-11-17 15:04:03,910 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 304 transitions. [2023-11-17 15:04:03,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 304 transitions. [2023-11-17 15:04:03,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:03,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 304 transitions. [2023-11-17 15:04:03,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:03,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:03,921 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:03,922 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 5 states and 304 transitions. [2023-11-17 15:04:03,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 35 transitions, 149 flow [2023-11-17 15:04:03,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 35 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:04:03,925 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 75 flow [2023-11-17 15:04:03,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2023-11-17 15:04:03,930 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 5 predicate places. [2023-11-17 15:04:03,930 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 75 flow [2023-11-17 15:04:03,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:03,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:03,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:03,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:04:03,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:03,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:03,932 INFO L85 PathProgramCache]: Analyzing trace with hash -566238261, now seen corresponding path program 1 times [2023-11-17 15:04:03,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:03,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803440561] [2023-11-17 15:04:03,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:03,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:04,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:04,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803440561] [2023-11-17 15:04:04,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803440561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:04:04,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:04:04,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:04:04,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503356157] [2023-11-17 15:04:04,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:04:04,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:04:04,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:04,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:04:04,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:04:04,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:04,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:04,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:04,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:04,139 INFO L124 PetriNetUnfolderBase]: 92/157 cut-off events. [2023-11-17 15:04:04,139 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-17 15:04:04,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 157 events. 92/157 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 440 event pairs, 19 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 441. Up to 61 conditions per place. [2023-11-17 15:04:04,141 INFO L140 encePairwiseOnDemand]: 127/131 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-11-17 15:04:04,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 30 transitions, 173 flow [2023-11-17 15:04:04,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:04:04,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:04:04,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2023-11-17 15:04:04,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45229007633587787 [2023-11-17 15:04:04,142 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 237 transitions. [2023-11-17 15:04:04,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 237 transitions. [2023-11-17 15:04:04,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:04,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 237 transitions. [2023-11-17 15:04:04,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,144 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,144 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 75 flow. Second operand 4 states and 237 transitions. [2023-11-17 15:04:04,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 30 transitions, 173 flow [2023-11-17 15:04:04,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 30 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:04:04,146 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 119 flow [2023-11-17 15:04:04,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2023-11-17 15:04:04,146 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 9 predicate places. [2023-11-17 15:04:04,146 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 119 flow [2023-11-17 15:04:04,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:04,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:04,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:04:04,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:04,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:04,147 INFO L85 PathProgramCache]: Analyzing trace with hash -593367787, now seen corresponding path program 1 times [2023-11-17 15:04:04,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:04,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273574333] [2023-11-17 15:04:04,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:04,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:04,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:04,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:04,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273574333] [2023-11-17 15:04:04,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273574333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:04:04,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:04:04,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:04:04,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314469899] [2023-11-17 15:04:04,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:04:04,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:04:04,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:04,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:04:04,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:04:04,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:04,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:04,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:04,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:04,301 INFO L124 PetriNetUnfolderBase]: 132/229 cut-off events. [2023-11-17 15:04:04,301 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-11-17 15:04:04,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 229 events. 132/229 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 721 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 740. Up to 101 conditions per place. [2023-11-17 15:04:04,305 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-11-17 15:04:04,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 45 transitions, 301 flow [2023-11-17 15:04:04,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:04:04,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:04:04,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2023-11-17 15:04:04,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4529262086513995 [2023-11-17 15:04:04,307 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 356 transitions. [2023-11-17 15:04:04,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 356 transitions. [2023-11-17 15:04:04,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:04,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 356 transitions. [2023-11-17 15:04:04,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.333333333333336) internal successors, (356), 6 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,311 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,311 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 119 flow. Second operand 6 states and 356 transitions. [2023-11-17 15:04:04,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 45 transitions, 301 flow [2023-11-17 15:04:04,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 45 transitions, 285 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-17 15:04:04,315 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 203 flow [2023-11-17 15:04:04,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-11-17 15:04:04,316 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 17 predicate places. [2023-11-17 15:04:04,317 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 203 flow [2023-11-17 15:04:04,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:04,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:04,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:04:04,317 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:04,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:04,318 INFO L85 PathProgramCache]: Analyzing trace with hash -593353837, now seen corresponding path program 2 times [2023-11-17 15:04:04,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:04,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220687839] [2023-11-17 15:04:04,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:04,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:04,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:04,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220687839] [2023-11-17 15:04:04,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220687839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:04:04,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:04:04,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:04:04,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704310769] [2023-11-17 15:04:04,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:04:04,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:04:04,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:04,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:04:04,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:04:04,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:04,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:04,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:04,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:04,472 INFO L124 PetriNetUnfolderBase]: 132/231 cut-off events. [2023-11-17 15:04:04,472 INFO L125 PetriNetUnfolderBase]: For 553/553 co-relation queries the response was YES. [2023-11-17 15:04:04,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 231 events. 132/231 cut-off events. For 553/553 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 751 event pairs, 31 based on Foata normal form. 10/241 useless extension candidates. Maximal degree in co-relation 869. Up to 99 conditions per place. [2023-11-17 15:04:04,473 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 30 selfloop transitions, 15 changer transitions 8/53 dead transitions. [2023-11-17 15:04:04,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 422 flow [2023-11-17 15:04:04,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:04:04,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:04:04,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 413 transitions. [2023-11-17 15:04:04,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45038167938931295 [2023-11-17 15:04:04,475 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 413 transitions. [2023-11-17 15:04:04,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 413 transitions. [2023-11-17 15:04:04,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:04,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 413 transitions. [2023-11-17 15:04:04,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,478 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,478 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 203 flow. Second operand 7 states and 413 transitions. [2023-11-17 15:04:04,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 422 flow [2023-11-17 15:04:04,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 53 transitions, 398 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-17 15:04:04,480 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 277 flow [2023-11-17 15:04:04,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=277, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2023-11-17 15:04:04,481 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 26 predicate places. [2023-11-17 15:04:04,481 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 277 flow [2023-11-17 15:04:04,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:04,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:04,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:04:04,482 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:04,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:04,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1275101541, now seen corresponding path program 1 times [2023-11-17 15:04:04,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:04,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531550284] [2023-11-17 15:04:04,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:04,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:04,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:04,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531550284] [2023-11-17 15:04:04,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531550284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:04:04,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:04:04,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:04:04,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394043291] [2023-11-17 15:04:04,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:04:04,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:04:04,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:04,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:04:04,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:04:04,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:04,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:04,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:04,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:04,620 INFO L124 PetriNetUnfolderBase]: 168/295 cut-off events. [2023-11-17 15:04:04,621 INFO L125 PetriNetUnfolderBase]: For 1123/1123 co-relation queries the response was YES. [2023-11-17 15:04:04,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 295 events. 168/295 cut-off events. For 1123/1123 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1017 event pairs, 16 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1223. Up to 79 conditions per place. [2023-11-17 15:04:04,623 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 37 selfloop transitions, 22 changer transitions 3/62 dead transitions. [2023-11-17 15:04:04,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 62 transitions, 555 flow [2023-11-17 15:04:04,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:04:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:04:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 470 transitions. [2023-11-17 15:04:04,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484732824427481 [2023-11-17 15:04:04,625 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 470 transitions. [2023-11-17 15:04:04,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 470 transitions. [2023-11-17 15:04:04,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:04,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 470 transitions. [2023-11-17 15:04:04,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.75) internal successors, (470), 8 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,628 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,628 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 277 flow. Second operand 8 states and 470 transitions. [2023-11-17 15:04:04,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 62 transitions, 555 flow [2023-11-17 15:04:04,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 523 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-17 15:04:04,631 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 389 flow [2023-11-17 15:04:04,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=389, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2023-11-17 15:04:04,634 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 35 predicate places. [2023-11-17 15:04:04,634 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 389 flow [2023-11-17 15:04:04,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:04,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:04,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:04:04,634 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:04,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:04,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1305502311, now seen corresponding path program 2 times [2023-11-17 15:04:04,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:04,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772466909] [2023-11-17 15:04:04,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:04,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:04,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:04,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772466909] [2023-11-17 15:04:04,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772466909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:04:04,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:04:04,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:04:04,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457511517] [2023-11-17 15:04:04,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:04:04,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:04:04,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:04,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:04:04,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:04:04,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:04,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:04,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:04,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:04,790 INFO L124 PetriNetUnfolderBase]: 160/283 cut-off events. [2023-11-17 15:04:04,791 INFO L125 PetriNetUnfolderBase]: For 1704/1704 co-relation queries the response was YES. [2023-11-17 15:04:04,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 283 events. 160/283 cut-off events. For 1704/1704 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 993 event pairs, 22 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1337. Up to 69 conditions per place. [2023-11-17 15:04:04,792 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 30 selfloop transitions, 22 changer transitions 8/60 dead transitions. [2023-11-17 15:04:04,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 633 flow [2023-11-17 15:04:04,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:04:04,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:04:04,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 411 transitions. [2023-11-17 15:04:04,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44820065430752454 [2023-11-17 15:04:04,794 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 411 transitions. [2023-11-17 15:04:04,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 411 transitions. [2023-11-17 15:04:04,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:04,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 411 transitions. [2023-11-17 15:04:04,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 58.714285714285715) internal successors, (411), 7 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,813 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,813 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 389 flow. Second operand 7 states and 411 transitions. [2023-11-17 15:04:04,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 633 flow [2023-11-17 15:04:04,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 579 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-11-17 15:04:04,818 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 429 flow [2023-11-17 15:04:04,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=429, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2023-11-17 15:04:04,819 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 39 predicate places. [2023-11-17 15:04:04,819 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 429 flow [2023-11-17 15:04:04,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:04,820 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:04,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:04:04,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:04,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:04,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1815886077, now seen corresponding path program 3 times [2023-11-17 15:04:04,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:04,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097050859] [2023-11-17 15:04:04,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:04,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:04,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:04,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:04,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097050859] [2023-11-17 15:04:04,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097050859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:04:04,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859021756] [2023-11-17 15:04:04,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:04:04,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:04,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:04,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:04:04,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 15:04:04,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:04:04,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:04:04,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 15:04:04,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:04:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:05,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:04:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:05,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859021756] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:04:05,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:04:05,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-17 15:04:05,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209070660] [2023-11-17 15:04:05,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:04:05,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:04:05,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:05,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:04:05,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:04:05,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:05,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 429 flow. Second operand has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:05,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:05,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:05,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:05,328 INFO L124 PetriNetUnfolderBase]: 208/363 cut-off events. [2023-11-17 15:04:05,328 INFO L125 PetriNetUnfolderBase]: For 2833/2833 co-relation queries the response was YES. [2023-11-17 15:04:05,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 363 events. 208/363 cut-off events. For 2833/2833 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1283 event pairs, 18 based on Foata normal form. 16/379 useless extension candidates. Maximal degree in co-relation 1839. Up to 91 conditions per place. [2023-11-17 15:04:05,330 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 34 selfloop transitions, 37 changer transitions 22/93 dead transitions. [2023-11-17 15:04:05,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 93 transitions, 1039 flow [2023-11-17 15:04:05,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:04:05,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:04:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 816 transitions. [2023-11-17 15:04:05,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44492911668484186 [2023-11-17 15:04:05,332 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 816 transitions. [2023-11-17 15:04:05,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 816 transitions. [2023-11-17 15:04:05,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:05,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 816 transitions. [2023-11-17 15:04:05,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 58.285714285714285) internal successors, (816), 14 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:05,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 131.0) internal successors, (1965), 15 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:05,339 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 131.0) internal successors, (1965), 15 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:05,339 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 429 flow. Second operand 14 states and 816 transitions. [2023-11-17 15:04:05,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 93 transitions, 1039 flow [2023-11-17 15:04:05,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 93 transitions, 972 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-11-17 15:04:05,345 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 748 flow [2023-11-17 15:04:05,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=748, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2023-11-17 15:04:05,345 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 51 predicate places. [2023-11-17 15:04:05,345 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 748 flow [2023-11-17 15:04:05,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:05,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:05,346 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:05,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 15:04:05,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:05,556 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:05,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:05,556 INFO L85 PathProgramCache]: Analyzing trace with hash 173906857, now seen corresponding path program 4 times [2023-11-17 15:04:05,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:05,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251809584] [2023-11-17 15:04:05,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:05,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:04:05,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:05,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251809584] [2023-11-17 15:04:05,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251809584] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:04:05,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453416674] [2023-11-17 15:04:05,668 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:04:05,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:05,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:05,669 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:04:05,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 15:04:05,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:04:05,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:04:05,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 15:04:05,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:04:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:04:05,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:04:05,875 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:04:05,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453416674] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:04:05,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:04:05,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-17 15:04:05,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699468469] [2023-11-17 15:04:05,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:04:05,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 15:04:05,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:05,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 15:04:05,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:04:05,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:05,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 748 flow. Second operand has 16 states, 16 states have (on average 54.8125) internal successors, (877), 16 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:05,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:05,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:05,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:06,090 INFO L124 PetriNetUnfolderBase]: 264/475 cut-off events. [2023-11-17 15:04:06,090 INFO L125 PetriNetUnfolderBase]: For 5416/5416 co-relation queries the response was YES. [2023-11-17 15:04:06,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2701 conditions, 475 events. 264/475 cut-off events. For 5416/5416 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1706 event pairs, 55 based on Foata normal form. 32/507 useless extension candidates. Maximal degree in co-relation 2665. Up to 249 conditions per place. [2023-11-17 15:04:06,093 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 65 selfloop transitions, 27 changer transitions 27/119 dead transitions. [2023-11-17 15:04:06,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 119 transitions, 1566 flow [2023-11-17 15:04:06,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 15:04:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 15:04:06,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 931 transitions. [2023-11-17 15:04:06,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441793893129771 [2023-11-17 15:04:06,095 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 931 transitions. [2023-11-17 15:04:06,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 931 transitions. [2023-11-17 15:04:06,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:06,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 931 transitions. [2023-11-17 15:04:06,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 58.1875) internal successors, (931), 16 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:06,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 131.0) internal successors, (2227), 17 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:06,100 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 131.0) internal successors, (2227), 17 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:06,100 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 748 flow. Second operand 16 states and 931 transitions. [2023-11-17 15:04:06,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 119 transitions, 1566 flow [2023-11-17 15:04:06,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 119 transitions, 1187 flow, removed 176 selfloop flow, removed 5 redundant places. [2023-11-17 15:04:06,110 INFO L231 Difference]: Finished difference. Result has 89 places, 71 transitions, 836 flow [2023-11-17 15:04:06,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=836, PETRI_PLACES=89, PETRI_TRANSITIONS=71} [2023-11-17 15:04:06,111 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 71 predicate places. [2023-11-17 15:04:06,111 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 71 transitions, 836 flow [2023-11-17 15:04:06,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.8125) internal successors, (877), 16 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:06,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:06,112 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:06,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 15:04:06,316 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,SelfDestructingSolverStorable7 [2023-11-17 15:04:06,316 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:06,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:06,317 INFO L85 PathProgramCache]: Analyzing trace with hash 118604779, now seen corresponding path program 5 times [2023-11-17 15:04:06,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:06,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172410318] [2023-11-17 15:04:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:06,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:04:06,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:06,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172410318] [2023-11-17 15:04:06,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172410318] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:04:06,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292942016] [2023-11-17 15:04:06,422 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:04:06,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:06,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:06,423 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:04:06,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 15:04:06,479 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 15:04:06,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:04:06,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 15:04:06,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:04:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:04:06,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:04:06,606 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:04:06,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292942016] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:04:06,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:04:06,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 15:04:06,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975364706] [2023-11-17 15:04:06,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:04:06,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 15:04:06,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:06,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 15:04:06,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-17 15:04:06,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:06,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 71 transitions, 836 flow. Second operand has 17 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:06,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:06,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:06,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:06,894 INFO L124 PetriNetUnfolderBase]: 418/767 cut-off events. [2023-11-17 15:04:06,894 INFO L125 PetriNetUnfolderBase]: For 14645/14645 co-relation queries the response was YES. [2023-11-17 15:04:06,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4390 conditions, 767 events. 418/767 cut-off events. For 14645/14645 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3409 event pairs, 42 based on Foata normal form. 32/799 useless extension candidates. Maximal degree in co-relation 4345. Up to 230 conditions per place. [2023-11-17 15:04:06,898 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 73 selfloop transitions, 73 changer transitions 37/183 dead transitions. [2023-11-17 15:04:06,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 183 transitions, 2228 flow [2023-11-17 15:04:06,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 15:04:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 15:04:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1280 transitions. [2023-11-17 15:04:06,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441360166551006 [2023-11-17 15:04:06,901 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1280 transitions. [2023-11-17 15:04:06,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1280 transitions. [2023-11-17 15:04:06,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:06,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1280 transitions. [2023-11-17 15:04:06,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.18181818181818) internal successors, (1280), 22 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:06,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 131.0) internal successors, (3013), 23 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:06,907 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 131.0) internal successors, (3013), 23 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:06,907 INFO L175 Difference]: Start difference. First operand has 89 places, 71 transitions, 836 flow. Second operand 22 states and 1280 transitions. [2023-11-17 15:04:06,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 183 transitions, 2228 flow [2023-11-17 15:04:06,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 183 transitions, 2087 flow, removed 61 selfloop flow, removed 4 redundant places. [2023-11-17 15:04:06,928 INFO L231 Difference]: Finished difference. Result has 120 places, 109 transitions, 1567 flow [2023-11-17 15:04:06,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1567, PETRI_PLACES=120, PETRI_TRANSITIONS=109} [2023-11-17 15:04:06,928 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 102 predicate places. [2023-11-17 15:04:06,928 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 109 transitions, 1567 flow [2023-11-17 15:04:06,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:06,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:06,929 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:06,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 15:04:07,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:07,133 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:07,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:07,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1404696555, now seen corresponding path program 6 times [2023-11-17 15:04:07,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:07,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414584499] [2023-11-17 15:04:07,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:07,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:04:07,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:07,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414584499] [2023-11-17 15:04:07,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414584499] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:04:07,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28657138] [2023-11-17 15:04:07,206 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:04:07,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:07,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:07,207 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:04:07,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 15:04:07,271 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-17 15:04:07,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:04:07,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 15:04:07,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:04:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:04:07,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:04:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:04:07,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28657138] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:04:07,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:04:07,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-17 15:04:07,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722498070] [2023-11-17 15:04:07,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:04:07,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 15:04:07,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:07,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 15:04:07,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:04:07,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:07,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 109 transitions, 1567 flow. Second operand has 16 states, 16 states have (on average 54.75) internal successors, (876), 16 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:07,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:07,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:07,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:07,730 INFO L124 PetriNetUnfolderBase]: 618/1123 cut-off events. [2023-11-17 15:04:07,730 INFO L125 PetriNetUnfolderBase]: For 42544/42544 co-relation queries the response was YES. [2023-11-17 15:04:07,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8373 conditions, 1123 events. 618/1123 cut-off events. For 42544/42544 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5459 event pairs, 30 based on Foata normal form. 36/1159 useless extension candidates. Maximal degree in co-relation 8313. Up to 358 conditions per place. [2023-11-17 15:04:07,737 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 71 selfloop transitions, 135 changer transitions 41/247 dead transitions. [2023-11-17 15:04:07,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 247 transitions, 3949 flow [2023-11-17 15:04:07,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 15:04:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 15:04:07,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1571 transitions. [2023-11-17 15:04:07,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44416171897087925 [2023-11-17 15:04:07,741 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1571 transitions. [2023-11-17 15:04:07,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1571 transitions. [2023-11-17 15:04:07,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:07,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1571 transitions. [2023-11-17 15:04:07,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 58.18518518518518) internal successors, (1571), 27 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:07,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 131.0) internal successors, (3668), 28 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:07,748 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 131.0) internal successors, (3668), 28 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:07,748 INFO L175 Difference]: Start difference. First operand has 120 places, 109 transitions, 1567 flow. Second operand 27 states and 1571 transitions. [2023-11-17 15:04:07,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 247 transitions, 3949 flow [2023-11-17 15:04:07,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 247 transitions, 3594 flow, removed 169 selfloop flow, removed 4 redundant places. [2023-11-17 15:04:07,806 INFO L231 Difference]: Finished difference. Result has 157 places, 159 transitions, 2747 flow [2023-11-17 15:04:07,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2747, PETRI_PLACES=157, PETRI_TRANSITIONS=159} [2023-11-17 15:04:07,806 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 139 predicate places. [2023-11-17 15:04:07,807 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 159 transitions, 2747 flow [2023-11-17 15:04:07,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.75) internal successors, (876), 16 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:07,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:07,807 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:07,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 15:04:08,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:08,012 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:08,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:08,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1794307131, now seen corresponding path program 7 times [2023-11-17 15:04:08,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:08,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682281562] [2023-11-17 15:04:08,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:08,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:04:08,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:08,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682281562] [2023-11-17 15:04:08,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682281562] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:04:08,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663054856] [2023-11-17 15:04:08,091 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:04:08,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:08,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:08,092 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:04:08,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 15:04:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:08,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 15:04:08,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:04:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:04:08,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:04:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:04:08,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663054856] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:04:08,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:04:08,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-17 15:04:08,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896968482] [2023-11-17 15:04:08,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:04:08,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 15:04:08,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:08,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 15:04:08,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-11-17 15:04:08,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:08,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 159 transitions, 2747 flow. Second operand has 19 states, 19 states have (on average 54.68421052631579) internal successors, (1039), 19 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:08,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:08,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:08,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:08,781 INFO L124 PetriNetUnfolderBase]: 746/1355 cut-off events. [2023-11-17 15:04:08,781 INFO L125 PetriNetUnfolderBase]: For 87557/87557 co-relation queries the response was YES. [2023-11-17 15:04:08,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12807 conditions, 1355 events. 746/1355 cut-off events. For 87557/87557 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6723 event pairs, 12 based on Foata normal form. 36/1391 useless extension candidates. Maximal degree in co-relation 12732. Up to 445 conditions per place. [2023-11-17 15:04:08,791 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 61 selfloop transitions, 173 changer transitions 52/286 dead transitions. [2023-11-17 15:04:08,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 286 transitions, 6082 flow [2023-11-17 15:04:08,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-17 15:04:08,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-17 15:04:08,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1686 transitions. [2023-11-17 15:04:08,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44380100026322716 [2023-11-17 15:04:08,794 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1686 transitions. [2023-11-17 15:04:08,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1686 transitions. [2023-11-17 15:04:08,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:08,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1686 transitions. [2023-11-17 15:04:08,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 58.13793103448276) internal successors, (1686), 29 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:08,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 131.0) internal successors, (3930), 30 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:08,801 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 131.0) internal successors, (3930), 30 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:08,801 INFO L175 Difference]: Start difference. First operand has 157 places, 159 transitions, 2747 flow. Second operand 29 states and 1686 transitions. [2023-11-17 15:04:08,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 286 transitions, 6082 flow [2023-11-17 15:04:08,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 286 transitions, 4609 flow, removed 707 selfloop flow, removed 11 redundant places. [2023-11-17 15:04:08,920 INFO L231 Difference]: Finished difference. Result has 188 places, 199 transitions, 3522 flow [2023-11-17 15:04:08,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=2074, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3522, PETRI_PLACES=188, PETRI_TRANSITIONS=199} [2023-11-17 15:04:08,921 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 170 predicate places. [2023-11-17 15:04:08,921 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 199 transitions, 3522 flow [2023-11-17 15:04:08,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 54.68421052631579) internal successors, (1039), 19 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:08,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:08,921 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:08,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 15:04:09,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-17 15:04:09,126 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:09,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:09,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1737774541, now seen corresponding path program 8 times [2023-11-17 15:04:09,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:09,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166606629] [2023-11-17 15:04:09,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:09,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:09,283 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:09,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:09,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166606629] [2023-11-17 15:04:09,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166606629] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:04:09,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189709864] [2023-11-17 15:04:09,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:04:09,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:09,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:09,285 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:04:09,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 15:04:09,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:04:09,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:04:09,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 15:04:09,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:04:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:09,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:04:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:09,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189709864] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:04:09,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:04:09,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2023-11-17 15:04:09,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613796756] [2023-11-17 15:04:09,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:04:09,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-17 15:04:09,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:09,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-17 15:04:09,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2023-11-17 15:04:09,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:09,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 199 transitions, 3522 flow. Second operand has 30 states, 30 states have (on average 54.36666666666667) internal successors, (1631), 30 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:09,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:09,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:09,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:10,519 INFO L124 PetriNetUnfolderBase]: 930/1663 cut-off events. [2023-11-17 15:04:10,519 INFO L125 PetriNetUnfolderBase]: For 123737/123737 co-relation queries the response was YES. [2023-11-17 15:04:10,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16689 conditions, 1663 events. 930/1663 cut-off events. For 123737/123737 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7873 event pairs, 18 based on Foata normal form. 52/1715 useless extension candidates. Maximal degree in co-relation 16602. Up to 561 conditions per place. [2023-11-17 15:04:10,534 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 90 selfloop transitions, 219 changer transitions 98/407 dead transitions. [2023-11-17 15:04:10,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 407 transitions, 8977 flow [2023-11-17 15:04:10,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-17 15:04:10,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-11-17 15:04:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 3014 transitions. [2023-11-17 15:04:10,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4424544920728127 [2023-11-17 15:04:10,538 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 3014 transitions. [2023-11-17 15:04:10,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 3014 transitions. [2023-11-17 15:04:10,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:10,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 3014 transitions. [2023-11-17 15:04:10,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 57.96153846153846) internal successors, (3014), 52 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:10,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 131.0) internal successors, (6943), 53 states have internal predecessors, (6943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:10,552 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 131.0) internal successors, (6943), 53 states have internal predecessors, (6943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:10,552 INFO L175 Difference]: Start difference. First operand has 188 places, 199 transitions, 3522 flow. Second operand 52 states and 3014 transitions. [2023-11-17 15:04:10,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 407 transitions, 8977 flow [2023-11-17 15:04:10,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 407 transitions, 8084 flow, removed 417 selfloop flow, removed 8 redundant places. [2023-11-17 15:04:10,735 INFO L231 Difference]: Finished difference. Result has 257 places, 245 transitions, 5203 flow [2023-11-17 15:04:10,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=2957, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=5203, PETRI_PLACES=257, PETRI_TRANSITIONS=245} [2023-11-17 15:04:10,736 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 239 predicate places. [2023-11-17 15:04:10,736 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 245 transitions, 5203 flow [2023-11-17 15:04:10,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 54.36666666666667) internal successors, (1631), 30 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:10,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:10,736 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:10,743 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 15:04:10,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:10,937 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:10,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1210806945, now seen corresponding path program 9 times [2023-11-17 15:04:10,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:10,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11218162] [2023-11-17 15:04:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:10,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:11,342 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:11,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:11,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11218162] [2023-11-17 15:04:11,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11218162] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:04:11,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479240013] [2023-11-17 15:04:11,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:04:11,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:11,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:11,343 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:04:11,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 15:04:11,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-17 15:04:11,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:04:11,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 15:04:11,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:04:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:11,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:04:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:12,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479240013] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:04:12,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:04:12,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-11-17 15:04:12,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221837877] [2023-11-17 15:04:12,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:04:12,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-17 15:04:12,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:12,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-17 15:04:12,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=580, Invalid=1870, Unknown=0, NotChecked=0, Total=2450 [2023-11-17 15:04:12,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:12,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 245 transitions, 5203 flow. Second operand has 50 states, 50 states have (on average 54.22) internal successors, (2711), 50 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:12,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:12,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:12,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:13,518 INFO L124 PetriNetUnfolderBase]: 1290/2383 cut-off events. [2023-11-17 15:04:13,518 INFO L125 PetriNetUnfolderBase]: For 333697/333697 co-relation queries the response was YES. [2023-11-17 15:04:13,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32007 conditions, 2383 events. 1290/2383 cut-off events. For 333697/333697 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 11948 event pairs, 224 based on Foata normal form. 72/2455 useless extension candidates. Maximal degree in co-relation 31894. Up to 961 conditions per place. [2023-11-17 15:04:13,542 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 215 selfloop transitions, 180 changer transitions 103/498 dead transitions. [2023-11-17 15:04:13,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 498 transitions, 14518 flow [2023-11-17 15:04:13,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-17 15:04:13,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-11-17 15:04:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 3109 transitions. [2023-11-17 15:04:13,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.439496748657054 [2023-11-17 15:04:13,545 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 3109 transitions. [2023-11-17 15:04:13,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 3109 transitions. [2023-11-17 15:04:13,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:13,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 3109 transitions. [2023-11-17 15:04:13,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 57.574074074074076) internal successors, (3109), 54 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:13,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 131.0) internal successors, (7205), 55 states have internal predecessors, (7205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:13,557 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 131.0) internal successors, (7205), 55 states have internal predecessors, (7205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:13,557 INFO L175 Difference]: Start difference. First operand has 257 places, 245 transitions, 5203 flow. Second operand 54 states and 3109 transitions. [2023-11-17 15:04:13,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 498 transitions, 14518 flow [2023-11-17 15:04:14,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 498 transitions, 11215 flow, removed 1573 selfloop flow, removed 16 redundant places. [2023-11-17 15:04:14,239 INFO L231 Difference]: Finished difference. Result has 318 places, 337 transitions, 6977 flow [2023-11-17 15:04:14,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=3786, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=6977, PETRI_PLACES=318, PETRI_TRANSITIONS=337} [2023-11-17 15:04:14,240 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 300 predicate places. [2023-11-17 15:04:14,240 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 337 transitions, 6977 flow [2023-11-17 15:04:14,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 54.22) internal successors, (2711), 50 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:14,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:14,241 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:14,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-17 15:04:14,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:14,445 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:14,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:14,446 INFO L85 PathProgramCache]: Analyzing trace with hash 5881111, now seen corresponding path program 10 times [2023-11-17 15:04:14,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:14,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987517974] [2023-11-17 15:04:14,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:14,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:14,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:14,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987517974] [2023-11-17 15:04:14,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987517974] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:04:14,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41159996] [2023-11-17 15:04:14,818 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:04:14,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:14,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:14,819 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:04:14,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 15:04:14,885 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:04:14,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:04:14,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 15:04:14,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:04:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:14,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:04:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:15,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41159996] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:04:15,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:04:15,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 49 [2023-11-17 15:04:15,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510437283] [2023-11-17 15:04:15,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:04:15,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-17 15:04:15,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:15,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-17 15:04:15,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=494, Invalid=2056, Unknown=0, NotChecked=0, Total=2550 [2023-11-17 15:04:15,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:15,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 337 transitions, 6977 flow. Second operand has 51 states, 51 states have (on average 54.21568627450981) internal successors, (2765), 51 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:15,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:15,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:15,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:17,407 INFO L124 PetriNetUnfolderBase]: 1642/3087 cut-off events. [2023-11-17 15:04:17,407 INFO L125 PetriNetUnfolderBase]: For 744218/744218 co-relation queries the response was YES. [2023-11-17 15:04:17,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46116 conditions, 3087 events. 1642/3087 cut-off events. For 744218/744218 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 16373 event pairs, 114 based on Foata normal form. 72/3159 useless extension candidates. Maximal degree in co-relation 45978. Up to 1253 conditions per place. [2023-11-17 15:04:17,438 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 152 selfloop transitions, 339 changer transitions 115/606 dead transitions. [2023-11-17 15:04:17,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 606 transitions, 16767 flow [2023-11-17 15:04:17,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-17 15:04:17,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-11-17 15:04:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 3460 transitions. [2023-11-17 15:04:17,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4402035623409669 [2023-11-17 15:04:17,442 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 3460 transitions. [2023-11-17 15:04:17,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 3460 transitions. [2023-11-17 15:04:17,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:17,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 3460 transitions. [2023-11-17 15:04:17,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 57.666666666666664) internal successors, (3460), 60 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:17,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 131.0) internal successors, (7991), 61 states have internal predecessors, (7991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:17,453 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 131.0) internal successors, (7991), 61 states have internal predecessors, (7991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:17,453 INFO L175 Difference]: Start difference. First operand has 318 places, 337 transitions, 6977 flow. Second operand 60 states and 3460 transitions. [2023-11-17 15:04:17,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 606 transitions, 16767 flow [2023-11-17 15:04:18,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 606 transitions, 15041 flow, removed 795 selfloop flow, removed 21 redundant places. [2023-11-17 15:04:18,709 INFO L231 Difference]: Finished difference. Result has 378 places, 428 transitions, 9597 flow [2023-11-17 15:04:18,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=5531, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=9597, PETRI_PLACES=378, PETRI_TRANSITIONS=428} [2023-11-17 15:04:18,709 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 360 predicate places. [2023-11-17 15:04:18,710 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 428 transitions, 9597 flow [2023-11-17 15:04:18,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 54.21568627450981) internal successors, (2765), 51 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:18,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:18,710 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:18,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 15:04:18,915 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,SelfDestructingSolverStorable13 [2023-11-17 15:04:18,915 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:18,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:18,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1198078107, now seen corresponding path program 11 times [2023-11-17 15:04:18,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:18,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993677592] [2023-11-17 15:04:18,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:18,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:19,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993677592] [2023-11-17 15:04:19,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993677592] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:04:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206785112] [2023-11-17 15:04:19,401 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:04:19,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:19,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:19,402 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:04:19,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 15:04:19,470 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-17 15:04:19,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:04:19,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 15:04:19,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:04:19,527 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:19,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:04:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:19,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206785112] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:04:19,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:04:19,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-11-17 15:04:19,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593079302] [2023-11-17 15:04:19,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:04:19,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-17 15:04:19,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:19,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-17 15:04:19,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=426, Invalid=2024, Unknown=0, NotChecked=0, Total=2450 [2023-11-17 15:04:19,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:19,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 428 transitions, 9597 flow. Second operand has 50 states, 50 states have (on average 54.22) internal successors, (2711), 50 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:19,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:19,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:19,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:22,389 INFO L124 PetriNetUnfolderBase]: 2026/3803 cut-off events. [2023-11-17 15:04:22,389 INFO L125 PetriNetUnfolderBase]: For 1377720/1377720 co-relation queries the response was YES. [2023-11-17 15:04:22,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68379 conditions, 3803 events. 2026/3803 cut-off events. For 1377720/1377720 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 20497 event pairs, 29 based on Foata normal form. 72/3875 useless extension candidates. Maximal degree in co-relation 68229. Up to 1577 conditions per place. [2023-11-17 15:04:22,430 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 139 selfloop transitions, 476 changer transitions 115/730 dead transitions. [2023-11-17 15:04:22,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 730 transitions, 23591 flow [2023-11-17 15:04:22,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-11-17 15:04:22,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2023-11-17 15:04:22,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 4269 transitions. [2023-11-17 15:04:22,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403754899938106 [2023-11-17 15:04:22,437 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 4269 transitions. [2023-11-17 15:04:22,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 4269 transitions. [2023-11-17 15:04:22,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:22,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 4269 transitions. [2023-11-17 15:04:22,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 57.689189189189186) internal successors, (4269), 74 states have internal predecessors, (4269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:22,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 131.0) internal successors, (9825), 75 states have internal predecessors, (9825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:22,449 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 131.0) internal successors, (9825), 75 states have internal predecessors, (9825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:22,449 INFO L175 Difference]: Start difference. First operand has 378 places, 428 transitions, 9597 flow. Second operand 74 states and 4269 transitions. [2023-11-17 15:04:22,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 730 transitions, 23591 flow [2023-11-17 15:04:24,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 730 transitions, 20722 flow, removed 1258 selfloop flow, removed 22 redundant places. [2023-11-17 15:04:24,865 INFO L231 Difference]: Finished difference. Result has 453 places, 512 transitions, 12218 flow [2023-11-17 15:04:24,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=7310, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=12218, PETRI_PLACES=453, PETRI_TRANSITIONS=512} [2023-11-17 15:04:24,866 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 435 predicate places. [2023-11-17 15:04:24,866 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 512 transitions, 12218 flow [2023-11-17 15:04:24,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 54.22) internal successors, (2711), 50 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:24,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:24,866 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:24,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-17 15:04:25,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-17 15:04:25,071 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:25,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:25,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1889424229, now seen corresponding path program 12 times [2023-11-17 15:04:25,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:25,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928473370] [2023-11-17 15:04:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:25,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:25,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:25,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928473370] [2023-11-17 15:04:25,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928473370] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:04:25,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286554864] [2023-11-17 15:04:25,393 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:04:25,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:25,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:25,394 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:04:25,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 15:04:25,464 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2023-11-17 15:04:25,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:04:25,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-17 15:04:25,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:04:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:25,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:04:25,953 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:25,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286554864] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:04:25,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:04:25,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 52 [2023-11-17 15:04:25,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568385480] [2023-11-17 15:04:25,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:04:25,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-11-17 15:04:25,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:25,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-11-17 15:04:25,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=682, Invalid=2180, Unknown=0, NotChecked=0, Total=2862 [2023-11-17 15:04:25,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:25,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 512 transitions, 12218 flow. Second operand has 54 states, 54 states have (on average 54.2037037037037) internal successors, (2927), 54 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:25,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:25,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:25,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:29,031 INFO L124 PetriNetUnfolderBase]: 2214/4127 cut-off events. [2023-11-17 15:04:29,032 INFO L125 PetriNetUnfolderBase]: For 2106897/2106897 co-relation queries the response was YES. [2023-11-17 15:04:29,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85602 conditions, 4127 events. 2214/4127 cut-off events. For 2106897/2106897 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 22109 event pairs, 20 based on Foata normal form. 68/4195 useless extension candidates. Maximal degree in co-relation 85429. Up to 1697 conditions per place. [2023-11-17 15:04:29,086 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 118 selfloop transitions, 538 changer transitions 154/810 dead transitions. [2023-11-17 15:04:29,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 810 transitions, 30905 flow [2023-11-17 15:04:29,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-11-17 15:04:29,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2023-11-17 15:04:29,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 4623 transitions. [2023-11-17 15:04:29,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411259541984733 [2023-11-17 15:04:29,091 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 4623 transitions. [2023-11-17 15:04:29,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 4623 transitions. [2023-11-17 15:04:29,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:29,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 4623 transitions. [2023-11-17 15:04:29,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 57.7875) internal successors, (4623), 80 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:29,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 131.0) internal successors, (10611), 81 states have internal predecessors, (10611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:29,104 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 131.0) internal successors, (10611), 81 states have internal predecessors, (10611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:29,104 INFO L175 Difference]: Start difference. First operand has 453 places, 512 transitions, 12218 flow. Second operand 80 states and 4623 transitions. [2023-11-17 15:04:29,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 810 transitions, 30905 flow [2023-11-17 15:04:32,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 810 transitions, 26043 flow, removed 2205 selfloop flow, removed 25 redundant places. [2023-11-17 15:04:32,584 INFO L231 Difference]: Finished difference. Result has 538 places, 573 transitions, 15112 flow [2023-11-17 15:04:32,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=9038, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=15112, PETRI_PLACES=538, PETRI_TRANSITIONS=573} [2023-11-17 15:04:32,584 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 520 predicate places. [2023-11-17 15:04:32,584 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 573 transitions, 15112 flow [2023-11-17 15:04:32,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 54.2037037037037) internal successors, (2927), 54 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:32,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:32,585 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:32,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 15:04:32,785 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,SelfDestructingSolverStorable15 [2023-11-17 15:04:32,785 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:32,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:32,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1792072731, now seen corresponding path program 13 times [2023-11-17 15:04:32,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:32,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783183188] [2023-11-17 15:04:32,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:32,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:33,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:33,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783183188] [2023-11-17 15:04:33,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783183188] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:04:33,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882405512] [2023-11-17 15:04:33,481 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:04:33,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:33,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:33,483 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:04:33,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-17 15:04:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:33,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-17 15:04:33,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:04:33,651 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:33,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:04:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:34,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882405512] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:04:34,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:04:34,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 47 [2023-11-17 15:04:34,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180414620] [2023-11-17 15:04:34,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:04:34,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-17 15:04:34,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:34,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-17 15:04:34,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=1822, Unknown=0, NotChecked=0, Total=2352 [2023-11-17 15:04:34,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:34,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 573 transitions, 15112 flow. Second operand has 49 states, 49 states have (on average 54.244897959183675) internal successors, (2658), 49 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:34,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:34,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:34,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:38,169 INFO L124 PetriNetUnfolderBase]: 2650/4927 cut-off events. [2023-11-17 15:04:38,170 INFO L125 PetriNetUnfolderBase]: For 3320053/3320053 co-relation queries the response was YES. [2023-11-17 15:04:38,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117646 conditions, 4927 events. 2650/4927 cut-off events. For 3320053/3320053 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 26882 event pairs, 20 based on Foata normal form. 20/4947 useless extension candidates. Maximal degree in co-relation 117442. Up to 2045 conditions per place. [2023-11-17 15:04:38,244 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 138 selfloop transitions, 649 changer transitions 170/957 dead transitions. [2023-11-17 15:04:38,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 957 transitions, 38156 flow [2023-11-17 15:04:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-11-17 15:04:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-11-17 15:04:38,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 5076 transitions. [2023-11-17 15:04:38,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44031922276197083 [2023-11-17 15:04:38,249 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 5076 transitions. [2023-11-17 15:04:38,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 5076 transitions. [2023-11-17 15:04:38,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:38,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 5076 transitions. [2023-11-17 15:04:38,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 57.68181818181818) internal successors, (5076), 88 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:38,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 131.0) internal successors, (11659), 89 states have internal predecessors, (11659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:38,263 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 131.0) internal successors, (11659), 89 states have internal predecessors, (11659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:38,264 INFO L175 Difference]: Start difference. First operand has 538 places, 573 transitions, 15112 flow. Second operand 88 states and 5076 transitions. [2023-11-17 15:04:38,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 957 transitions, 38156 flow [2023-11-17 15:04:44,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 957 transitions, 29757 flow, removed 3847 selfloop flow, removed 44 redundant places. [2023-11-17 15:04:44,580 INFO L231 Difference]: Finished difference. Result has 591 places, 682 transitions, 15329 flow [2023-11-17 15:04:44,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=10463, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=15329, PETRI_PLACES=591, PETRI_TRANSITIONS=682} [2023-11-17 15:04:44,581 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 573 predicate places. [2023-11-17 15:04:44,581 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 682 transitions, 15329 flow [2023-11-17 15:04:44,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 54.244897959183675) internal successors, (2658), 49 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:44,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:44,582 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:44,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-17 15:04:44,784 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,SelfDestructingSolverStorable16 [2023-11-17 15:04:44,786 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:44,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:44,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1655893737, now seen corresponding path program 14 times [2023-11-17 15:04:44,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:44,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461115246] [2023-11-17 15:04:44,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:44,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 15:04:44,804 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 15:04:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 15:04:44,837 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 15:04:44,838 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 15:04:44,838 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 15:04:44,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 15:04:44,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 15:04:44,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 15:04:44,840 INFO L445 BasicCegarLoop]: Path program histogram: [14, 2, 1, 1] [2023-11-17 15:04:44,843 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:04:44,844 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:04:44,881 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-17 15:04:44,885 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-17 15:04:44,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:04:44 BasicIcfg [2023-11-17 15:04:44,906 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:04:44,906 INFO L158 Benchmark]: Toolchain (without parser) took 43903.33ms. Allocated memory was 315.6MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 262.3MB in the beginning and 1.1GB in the end (delta: -856.5MB). Peak memory consumption was 673.9MB. Max. memory is 8.0GB. [2023-11-17 15:04:44,906 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory is still 134.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:04:44,906 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.10ms. Allocated memory is still 315.6MB. Free memory was 262.3MB in the beginning and 242.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-11-17 15:04:44,907 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.99ms. Allocated memory is still 315.6MB. Free memory was 242.9MB in the beginning and 240.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:04:44,907 INFO L158 Benchmark]: Boogie Preprocessor took 34.79ms. Allocated memory is still 315.6MB. Free memory was 240.8MB in the beginning and 239.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:04:44,907 INFO L158 Benchmark]: RCFGBuilder took 266.44ms. Allocated memory is still 315.6MB. Free memory was 239.3MB in the beginning and 226.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-11-17 15:04:44,907 INFO L158 Benchmark]: TraceAbstraction took 43251.13ms. Allocated memory was 315.6MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 225.6MB in the beginning and 1.1GB in the end (delta: -893.2MB). Peak memory consumption was 637.2MB. Max. memory is 8.0GB. [2023-11-17 15:04:44,908 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory is still 134.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 304.10ms. Allocated memory is still 315.6MB. Free memory was 262.3MB in the beginning and 242.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.99ms. Allocated memory is still 315.6MB. Free memory was 242.9MB in the beginning and 240.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.79ms. Allocated memory is still 315.6MB. Free memory was 240.8MB in the beginning and 239.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 266.44ms. Allocated memory is still 315.6MB. Free memory was 239.3MB in the beginning and 226.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 43251.13ms. Allocated memory was 315.6MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 225.6MB in the beginning and 1.1GB in the end (delta: -893.2MB). Peak memory consumption was 637.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 69 PlacesBefore, 18 PlacesAfterwards, 67 TransitionsBefore, 14 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 1192 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1045, independent: 1015, independent conditional: 0, independent unconditional: 1015, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 870, independent: 855, independent conditional: 0, independent unconditional: 855, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 870, independent: 855, independent conditional: 0, independent unconditional: 855, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 29, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1045, independent: 160, independent conditional: 0, independent unconditional: 160, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 870, unknown conditional: 0, unknown unconditional: 870] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={3:0}, id2={5:0}, j=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={3:0}, id2={5:0}, j=6, k=0] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*20 +6); VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, condI=0, i=7, id1={3:0}, id2={5:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=11] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=14] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=15] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=16] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=17] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=18] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=19] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=20] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=20, k=20] [L719] 0 int condJ = j >= (2*20 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, condI=0, condJ=1, i=45, id1={3:0}, id2={5:0}, j=46, k=20, k=20] - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 89 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 43.1s, OverallIterations: 18, TraceHistogramMax: 20, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 30.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6227 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6227 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 515 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3918 IncrementalHoareTripleChecker+Invalid, 4433 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 515 mSolverCounterUnsat, 0 mSDtfsCounter, 3918 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1177 GetRequests, 300 SyntacticMatches, 34 SemanticMatches, 843 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24465 ImplicationChecksByTransitivity, 10.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15329occurred in iteration=17, InterpolantAutomatonStates: 553, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 610 NumberOfCodeBlocks, 610 NumberOfCodeBlocksAsserted, 70 NumberOfCheckSat, 779 ConstructedInterpolants, 0 QuantifiedInterpolants, 3376 SizeOfPredicates, 164 NumberOfNonLiveVariables, 1984 ConjunctsInSsa, 232 ConjunctsInUnsatCore, 39 InterpolantComputations, 6 PerfectInterpolantSequences, 12/2595 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-17 15:04:44,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...