/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:30:06,482 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:30:06,573 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:30:06,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:30:06,605 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:30:06,605 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:30:06,606 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:30:06,606 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:30:06,607 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:30:06,610 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:30:06,610 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:30:06,611 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:30:06,611 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:30:06,612 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:30:06,612 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:30:06,612 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:30:06,612 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:30:06,613 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:30:06,614 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:30:06,614 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:30:06,614 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:30:06,615 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:30:06,615 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:30:06,615 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:30:06,615 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:30:06,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:30:06,617 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:30:06,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:30:06,617 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:30:06,617 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:30:06,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:30:06,618 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:30:06,618 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:30:06,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:30:06,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:30:06,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:30:06,867 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:30:06,868 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:30:06,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-11-17 11:30:08,215 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:30:08,514 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:30:08,518 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-11-17 11:30:08,547 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/929d41927/638019c3a06b470ca606ee93a7a3add4/FLAG059ce2dd2 [2023-11-17 11:30:08,566 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/929d41927/638019c3a06b470ca606ee93a7a3add4 [2023-11-17 11:30:08,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:30:08,570 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:30:08,572 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:30:08,572 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:30:08,576 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:30:08,577 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:30:08" (1/1) ... [2023-11-17 11:30:08,578 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56908904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:08, skipping insertion in model container [2023-11-17 11:30:08,578 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:30:08" (1/1) ... [2023-11-17 11:30:08,633 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:30:08,805 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-wmm/safe035_power.i[947,960] [2023-11-17 11:30:09,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:30:09,090 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:30:09,102 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-wmm/safe035_power.i[947,960] [2023-11-17 11:30:09,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:30:09,246 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:30:09,246 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:30:09,253 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:30:09,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:09 WrapperNode [2023-11-17 11:30:09,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:30:09,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:30:09,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:30:09,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:30:09,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:09" (1/1) ... [2023-11-17 11:30:09,295 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:09" (1/1) ... [2023-11-17 11:30:09,326 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 172 [2023-11-17 11:30:09,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:30:09,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:30:09,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:30:09,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:30:09,342 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:09" (1/1) ... [2023-11-17 11:30:09,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:09" (1/1) ... [2023-11-17 11:30:09,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:09" (1/1) ... [2023-11-17 11:30:09,349 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:09" (1/1) ... [2023-11-17 11:30:09,376 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:09" (1/1) ... [2023-11-17 11:30:09,378 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:09" (1/1) ... [2023-11-17 11:30:09,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:09" (1/1) ... [2023-11-17 11:30:09,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:09" (1/1) ... [2023-11-17 11:30:09,391 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:30:09,392 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:30:09,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:30:09,393 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:30:09,393 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:09" (1/1) ... [2023-11-17 11:30:09,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:30:09,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:30:09,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 11:30:09,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 11:30:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:30:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:30:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:30:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:30:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:30:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 11:30:09,476 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 11:30:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 11:30:09,476 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 11:30:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 11:30:09,477 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 11:30:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:30:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:30:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:30:09,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:30:09,478 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:30:09,639 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:30:09,641 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:30:10,058 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:30:10,330 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:30:10,330 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:30:10,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:30:10 BoogieIcfgContainer [2023-11-17 11:30:10,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:30:10,334 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:30:10,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:30:10,338 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:30:10,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:30:08" (1/3) ... [2023-11-17 11:30:10,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185b0836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:30:10, skipping insertion in model container [2023-11-17 11:30:10,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:09" (2/3) ... [2023-11-17 11:30:10,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185b0836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:30:10, skipping insertion in model container [2023-11-17 11:30:10,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:30:10" (3/3) ... [2023-11-17 11:30:10,345 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2023-11-17 11:30:10,360 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:30:10,361 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 11:30:10,361 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:30:10,417 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:30:10,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 96 flow [2023-11-17 11:30:10,495 INFO L124 PetriNetUnfolderBase]: 1/39 cut-off events. [2023-11-17 11:30:10,496 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:30:10,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 1/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-11-17 11:30:10,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 96 flow [2023-11-17 11:30:10,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 39 transitions, 87 flow [2023-11-17 11:30:10,512 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:30:10,530 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 39 transitions, 87 flow [2023-11-17 11:30:10,534 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 39 transitions, 87 flow [2023-11-17 11:30:10,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 87 flow [2023-11-17 11:30:10,555 INFO L124 PetriNetUnfolderBase]: 1/39 cut-off events. [2023-11-17 11:30:10,556 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:30:10,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 1/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-11-17 11:30:10,557 INFO L119 LiptonReduction]: Number of co-enabled transitions 890 [2023-11-17 11:30:12,375 INFO L134 LiptonReduction]: Checked pairs total: 2764 [2023-11-17 11:30:12,376 INFO L136 LiptonReduction]: Total number of compositions: 18 [2023-11-17 11:30:12,394 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:30:12,401 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;@7fa74edf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:30:12,402 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 11:30:12,407 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:30:12,407 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-17 11:30:12,408 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:30:12,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:12,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:12,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:30:12,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:12,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1409466654, now seen corresponding path program 1 times [2023-11-17 11:30:12,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:12,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020159223] [2023-11-17 11:30:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:12,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:12,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:12,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020159223] [2023-11-17 11:30:12,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020159223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:12,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:12,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:30:12,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472532100] [2023-11-17 11:30:12,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:12,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:30:12,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:12,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:30:12,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:30:12,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2023-11-17 11:30:12,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:12,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:12,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2023-11-17 11:30:12,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:13,630 INFO L124 PetriNetUnfolderBase]: 2147/3121 cut-off events. [2023-11-17 11:30:13,630 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-17 11:30:13,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6316 conditions, 3121 events. 2147/3121 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 14592 event pairs, 322 based on Foata normal form. 0/2939 useless extension candidates. Maximal degree in co-relation 6305. Up to 2576 conditions per place. [2023-11-17 11:30:13,660 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 33 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2023-11-17 11:30:13,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 159 flow [2023-11-17 11:30:13,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:30:13,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:30:13,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2023-11-17 11:30:13,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2023-11-17 11:30:13,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 86 transitions. [2023-11-17 11:30:13,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 86 transitions. [2023-11-17 11:30:13,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:13,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 86 transitions. [2023-11-17 11:30:13,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:13,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:13,681 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:13,683 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 61 flow. Second operand 3 states and 86 transitions. [2023-11-17 11:30:13,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 159 flow [2023-11-17 11:30:13,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:30:13,688 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 58 flow [2023-11-17 11:30:13,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-11-17 11:30:13,693 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-17 11:30:13,693 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 58 flow [2023-11-17 11:30:13,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:13,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:13,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:13,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:30:13,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:30:13,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:13,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1582782159, now seen corresponding path program 1 times [2023-11-17 11:30:13,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:13,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374185295] [2023-11-17 11:30:13,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:13,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:14,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:14,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:14,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374185295] [2023-11-17 11:30:14,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374185295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:14,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:14,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:30:14,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684688556] [2023-11-17 11:30:14,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:14,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:30:14,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:14,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:30:14,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:30:14,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2023-11-17 11:30:14,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:14,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:14,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2023-11-17 11:30:14,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:14,388 INFO L124 PetriNetUnfolderBase]: 1466/2170 cut-off events. [2023-11-17 11:30:14,389 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-11-17 11:30:14,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 2170 events. 1466/2170 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9306 event pairs, 698 based on Foata normal form. 90/2258 useless extension candidates. Maximal degree in co-relation 4493. Up to 1189 conditions per place. [2023-11-17 11:30:14,402 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 32 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-11-17 11:30:14,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 148 flow [2023-11-17 11:30:14,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:30:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:30:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2023-11-17 11:30:14,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2023-11-17 11:30:14,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 83 transitions. [2023-11-17 11:30:14,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 83 transitions. [2023-11-17 11:30:14,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:14,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 83 transitions. [2023-11-17 11:30:14,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:14,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:14,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:14,413 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 58 flow. Second operand 3 states and 83 transitions. [2023-11-17 11:30:14,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 148 flow [2023-11-17 11:30:14,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:30:14,415 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 62 flow [2023-11-17 11:30:14,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-11-17 11:30:14,416 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-17 11:30:14,417 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 62 flow [2023-11-17 11:30:14,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:14,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:14,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:14,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:30:14,419 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:30:14,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:14,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2065600525, now seen corresponding path program 1 times [2023-11-17 11:30:14,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:14,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307503470] [2023-11-17 11:30:14,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:14,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:15,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:15,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307503470] [2023-11-17 11:30:15,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307503470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:15,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:15,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:30:15,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863666219] [2023-11-17 11:30:15,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:15,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:30:15,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:15,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:30:15,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:30:15,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2023-11-17 11:30:15,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:15,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:15,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2023-11-17 11:30:15,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:16,057 INFO L124 PetriNetUnfolderBase]: 2633/3897 cut-off events. [2023-11-17 11:30:16,057 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-11-17 11:30:16,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8366 conditions, 3897 events. 2633/3897 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19324 event pairs, 1033 based on Foata normal form. 30/3925 useless extension candidates. Maximal degree in co-relation 8355. Up to 1906 conditions per place. [2023-11-17 11:30:16,086 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 46 selfloop transitions, 16 changer transitions 0/63 dead transitions. [2023-11-17 11:30:16,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 63 transitions, 269 flow [2023-11-17 11:30:16,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:30:16,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:30:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2023-11-17 11:30:16,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2023-11-17 11:30:16,088 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 153 transitions. [2023-11-17 11:30:16,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 153 transitions. [2023-11-17 11:30:16,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:16,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 153 transitions. [2023-11-17 11:30:16,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:16,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:16,091 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:16,091 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 62 flow. Second operand 6 states and 153 transitions. [2023-11-17 11:30:16,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 63 transitions, 269 flow [2023-11-17 11:30:16,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 63 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:30:16,103 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 173 flow [2023-11-17 11:30:16,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-11-17 11:30:16,104 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2023-11-17 11:30:16,104 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 173 flow [2023-11-17 11:30:16,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:16,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:16,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:16,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:30:16,105 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:30:16,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:16,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1733092975, now seen corresponding path program 2 times [2023-11-17 11:30:16,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:16,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31114090] [2023-11-17 11:30:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:16,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:17,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:17,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31114090] [2023-11-17 11:30:17,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31114090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:17,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:17,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:30:17,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007574836] [2023-11-17 11:30:17,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:17,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:30:17,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:17,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:30:17,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:30:17,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2023-11-17 11:30:17,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:17,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:17,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2023-11-17 11:30:17,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:17,898 INFO L124 PetriNetUnfolderBase]: 3054/4517 cut-off events. [2023-11-17 11:30:17,898 INFO L125 PetriNetUnfolderBase]: For 2465/2465 co-relation queries the response was YES. [2023-11-17 11:30:17,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14144 conditions, 4517 events. 3054/4517 cut-off events. For 2465/2465 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22986 event pairs, 1877 based on Foata normal form. 30/4546 useless extension candidates. Maximal degree in co-relation 14130. Up to 3840 conditions per place. [2023-11-17 11:30:17,935 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 43 selfloop transitions, 20 changer transitions 0/64 dead transitions. [2023-11-17 11:30:17,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 64 transitions, 412 flow [2023-11-17 11:30:17,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:30:17,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:30:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2023-11-17 11:30:17,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2023-11-17 11:30:17,937 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 124 transitions. [2023-11-17 11:30:17,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 124 transitions. [2023-11-17 11:30:17,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:17,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 124 transitions. [2023-11-17 11:30:17,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:17,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 60.0) internal successors, (360), 6 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:17,939 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 60.0) internal successors, (360), 6 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:17,939 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 173 flow. Second operand 5 states and 124 transitions. [2023-11-17 11:30:17,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 64 transitions, 412 flow [2023-11-17 11:30:17,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 64 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:30:17,948 INFO L231 Difference]: Finished difference. Result has 43 places, 50 transitions, 312 flow [2023-11-17 11:30:17,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=43, PETRI_TRANSITIONS=50} [2023-11-17 11:30:17,949 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-11-17 11:30:17,949 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 50 transitions, 312 flow [2023-11-17 11:30:17,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:17,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:17,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:17,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:30:17,950 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:30:17,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:17,950 INFO L85 PathProgramCache]: Analyzing trace with hash 2108733284, now seen corresponding path program 1 times [2023-11-17 11:30:17,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:17,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842360050] [2023-11-17 11:30:17,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:17,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:19,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:19,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:19,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842360050] [2023-11-17 11:30:19,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842360050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:19,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:19,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:30:19,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591470206] [2023-11-17 11:30:19,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:19,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:30:19,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:19,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:30:19,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:30:19,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2023-11-17 11:30:19,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 50 transitions, 312 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:19,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:19,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2023-11-17 11:30:19,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:20,018 INFO L124 PetriNetUnfolderBase]: 3274/4859 cut-off events. [2023-11-17 11:30:20,018 INFO L125 PetriNetUnfolderBase]: For 5609/5609 co-relation queries the response was YES. [2023-11-17 11:30:20,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17624 conditions, 4859 events. 3274/4859 cut-off events. For 5609/5609 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 24976 event pairs, 1419 based on Foata normal form. 28/4887 useless extension candidates. Maximal degree in co-relation 17609. Up to 4470 conditions per place. [2023-11-17 11:30:20,059 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 76 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2023-11-17 11:30:20,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 89 transitions, 697 flow [2023-11-17 11:30:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:30:20,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:30:20,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2023-11-17 11:30:20,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42333333333333334 [2023-11-17 11:30:20,061 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 127 transitions. [2023-11-17 11:30:20,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 127 transitions. [2023-11-17 11:30:20,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:20,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 127 transitions. [2023-11-17 11:30:20,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:20,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 60.0) internal successors, (360), 6 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:20,063 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 60.0) internal successors, (360), 6 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:20,063 INFO L175 Difference]: Start difference. First operand has 43 places, 50 transitions, 312 flow. Second operand 5 states and 127 transitions. [2023-11-17 11:30:20,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 89 transitions, 697 flow [2023-11-17 11:30:20,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 89 transitions, 659 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:30:20,072 INFO L231 Difference]: Finished difference. Result has 47 places, 61 transitions, 412 flow [2023-11-17 11:30:20,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=412, PETRI_PLACES=47, PETRI_TRANSITIONS=61} [2023-11-17 11:30:20,073 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2023-11-17 11:30:20,073 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 61 transitions, 412 flow [2023-11-17 11:30:20,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:20,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:20,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:20,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:30:20,074 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:30:20,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:20,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2108752504, now seen corresponding path program 1 times [2023-11-17 11:30:20,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:20,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027591735] [2023-11-17 11:30:20,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:20,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:20,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:20,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027591735] [2023-11-17 11:30:20,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027591735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:20,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:20,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:30:20,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356477065] [2023-11-17 11:30:20,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:20,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:30:20,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:20,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:30:20,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:30:20,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2023-11-17 11:30:20,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 61 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:20,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:20,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2023-11-17 11:30:20,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:20,633 INFO L124 PetriNetUnfolderBase]: 1587/2575 cut-off events. [2023-11-17 11:30:20,633 INFO L125 PetriNetUnfolderBase]: For 5038/5038 co-relation queries the response was YES. [2023-11-17 11:30:20,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9938 conditions, 2575 events. 1587/2575 cut-off events. For 5038/5038 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13464 event pairs, 280 based on Foata normal form. 232/2805 useless extension candidates. Maximal degree in co-relation 9920. Up to 1910 conditions per place. [2023-11-17 11:30:20,656 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 99 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2023-11-17 11:30:20,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 104 transitions, 897 flow [2023-11-17 11:30:20,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:30:20,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:30:20,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2023-11-17 11:30:20,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2023-11-17 11:30:20,658 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2023-11-17 11:30:20,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2023-11-17 11:30:20,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:20,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2023-11-17 11:30:20,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:20,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:20,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:20,659 INFO L175 Difference]: Start difference. First operand has 47 places, 61 transitions, 412 flow. Second operand 3 states and 78 transitions. [2023-11-17 11:30:20,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 104 transitions, 897 flow [2023-11-17 11:30:20,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 104 transitions, 883 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-17 11:30:20,667 INFO L231 Difference]: Finished difference. Result has 50 places, 63 transitions, 417 flow [2023-11-17 11:30:20,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=417, PETRI_PLACES=50, PETRI_TRANSITIONS=63} [2023-11-17 11:30:20,668 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-11-17 11:30:20,668 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 63 transitions, 417 flow [2023-11-17 11:30:20,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:20,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:20,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:20,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:30:20,669 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:30:20,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1978000627, now seen corresponding path program 1 times [2023-11-17 11:30:20,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:20,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345674900] [2023-11-17 11:30:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:20,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:21,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:21,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345674900] [2023-11-17 11:30:21,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345674900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:21,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:21,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:30:21,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177575810] [2023-11-17 11:30:21,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:21,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:30:21,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:21,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:30:21,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:30:21,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2023-11-17 11:30:21,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 63 transitions, 417 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:21,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:21,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2023-11-17 11:30:21,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:22,196 INFO L124 PetriNetUnfolderBase]: 2020/3312 cut-off events. [2023-11-17 11:30:22,196 INFO L125 PetriNetUnfolderBase]: For 6217/6217 co-relation queries the response was YES. [2023-11-17 11:30:22,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13764 conditions, 3312 events. 2020/3312 cut-off events. For 6217/6217 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 18799 event pairs, 299 based on Foata normal form. 48/3358 useless extension candidates. Maximal degree in co-relation 13743. Up to 2026 conditions per place. [2023-11-17 11:30:22,220 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 106 selfloop transitions, 33 changer transitions 8/148 dead transitions. [2023-11-17 11:30:22,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 148 transitions, 1223 flow [2023-11-17 11:30:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:30:22,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:30:22,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2023-11-17 11:30:22,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2023-11-17 11:30:22,222 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 190 transitions. [2023-11-17 11:30:22,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 190 transitions. [2023-11-17 11:30:22,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:22,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 190 transitions. [2023-11-17 11:30:22,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 27.142857142857142) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:22,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 60.0) internal successors, (480), 8 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:22,224 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 60.0) internal successors, (480), 8 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:22,224 INFO L175 Difference]: Start difference. First operand has 50 places, 63 transitions, 417 flow. Second operand 7 states and 190 transitions. [2023-11-17 11:30:22,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 148 transitions, 1223 flow [2023-11-17 11:30:22,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 148 transitions, 1208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:30:22,238 INFO L231 Difference]: Finished difference. Result has 59 places, 89 transitions, 758 flow [2023-11-17 11:30:22,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=758, PETRI_PLACES=59, PETRI_TRANSITIONS=89} [2023-11-17 11:30:22,239 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-11-17 11:30:22,239 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 89 transitions, 758 flow [2023-11-17 11:30:22,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:22,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:22,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:22,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:30:22,240 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:30:22,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:22,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1534396341, now seen corresponding path program 2 times [2023-11-17 11:30:22,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:22,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885058330] [2023-11-17 11:30:22,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:22,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:22,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:22,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:22,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885058330] [2023-11-17 11:30:22,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885058330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:22,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:22,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:30:22,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754610117] [2023-11-17 11:30:22,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:22,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:30:22,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:22,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:30:22,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:30:22,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2023-11-17 11:30:22,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 89 transitions, 758 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:22,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:22,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2023-11-17 11:30:22,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:22,801 INFO L124 PetriNetUnfolderBase]: 986/1738 cut-off events. [2023-11-17 11:30:22,801 INFO L125 PetriNetUnfolderBase]: For 5198/5198 co-relation queries the response was YES. [2023-11-17 11:30:22,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8104 conditions, 1738 events. 986/1738 cut-off events. For 5198/5198 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9416 event pairs, 200 based on Foata normal form. 206/1942 useless extension candidates. Maximal degree in co-relation 8078. Up to 801 conditions per place. [2023-11-17 11:30:22,812 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 140 selfloop transitions, 7 changer transitions 7/155 dead transitions. [2023-11-17 11:30:22,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 155 transitions, 1628 flow [2023-11-17 11:30:22,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:30:22,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:30:22,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2023-11-17 11:30:22,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2023-11-17 11:30:22,814 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 106 transitions. [2023-11-17 11:30:22,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 106 transitions. [2023-11-17 11:30:22,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:22,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 106 transitions. [2023-11-17 11:30:22,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:22,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:22,816 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:22,816 INFO L175 Difference]: Start difference. First operand has 59 places, 89 transitions, 758 flow. Second operand 4 states and 106 transitions. [2023-11-17 11:30:22,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 155 transitions, 1628 flow [2023-11-17 11:30:22,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 155 transitions, 1569 flow, removed 27 selfloop flow, removed 1 redundant places. [2023-11-17 11:30:22,829 INFO L231 Difference]: Finished difference. Result has 62 places, 82 transitions, 685 flow [2023-11-17 11:30:22,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=685, PETRI_PLACES=62, PETRI_TRANSITIONS=82} [2023-11-17 11:30:22,832 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2023-11-17 11:30:22,832 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 82 transitions, 685 flow [2023-11-17 11:30:22,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:22,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:22,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:22,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:30:22,833 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:30:22,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:22,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1195327006, now seen corresponding path program 1 times [2023-11-17 11:30:22,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:22,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024247349] [2023-11-17 11:30:22,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:22,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:24,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:24,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024247349] [2023-11-17 11:30:24,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024247349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:24,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:24,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:30:24,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721956400] [2023-11-17 11:30:24,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:24,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 11:30:24,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:24,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 11:30:24,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-17 11:30:24,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2023-11-17 11:30:24,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 82 transitions, 685 flow. Second operand has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:24,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:24,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2023-11-17 11:30:24,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:24,811 INFO L124 PetriNetUnfolderBase]: 1248/2226 cut-off events. [2023-11-17 11:30:24,811 INFO L125 PetriNetUnfolderBase]: For 6843/6843 co-relation queries the response was YES. [2023-11-17 11:30:24,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10733 conditions, 2226 events. 1248/2226 cut-off events. For 6843/6843 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12901 event pairs, 303 based on Foata normal form. 21/2245 useless extension candidates. Maximal degree in co-relation 10705. Up to 1127 conditions per place. [2023-11-17 11:30:24,826 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 86 selfloop transitions, 36 changer transitions 30/153 dead transitions. [2023-11-17 11:30:24,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 153 transitions, 1518 flow [2023-11-17 11:30:24,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:30:24,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:30:24,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2023-11-17 11:30:24,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261904761904762 [2023-11-17 11:30:24,829 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 179 transitions. [2023-11-17 11:30:24,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 179 transitions. [2023-11-17 11:30:24,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:24,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 179 transitions. [2023-11-17 11:30:24,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:24,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 60.0) internal successors, (480), 8 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:24,831 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 60.0) internal successors, (480), 8 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:24,831 INFO L175 Difference]: Start difference. First operand has 62 places, 82 transitions, 685 flow. Second operand 7 states and 179 transitions. [2023-11-17 11:30:24,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 153 transitions, 1518 flow [2023-11-17 11:30:24,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 153 transitions, 1462 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-11-17 11:30:24,847 INFO L231 Difference]: Finished difference. Result has 70 places, 89 transitions, 892 flow [2023-11-17 11:30:24,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=892, PETRI_PLACES=70, PETRI_TRANSITIONS=89} [2023-11-17 11:30:24,848 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2023-11-17 11:30:24,848 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 89 transitions, 892 flow [2023-11-17 11:30:24,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:24,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:24,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:24,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:30:24,849 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:30:24,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:24,849 INFO L85 PathProgramCache]: Analyzing trace with hash 438277596, now seen corresponding path program 2 times [2023-11-17 11:30:24,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:24,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768589215] [2023-11-17 11:30:24,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:24,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:25,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:25,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768589215] [2023-11-17 11:30:25,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768589215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:25,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:25,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:30:25,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379406848] [2023-11-17 11:30:25,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:25,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 11:30:25,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:25,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 11:30:25,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-17 11:30:25,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2023-11-17 11:30:25,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 89 transitions, 892 flow. Second operand has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:25,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:25,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2023-11-17 11:30:25,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:26,597 INFO L124 PetriNetUnfolderBase]: 1239/2267 cut-off events. [2023-11-17 11:30:26,597 INFO L125 PetriNetUnfolderBase]: For 11324/11324 co-relation queries the response was YES. [2023-11-17 11:30:26,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12793 conditions, 2267 events. 1239/2267 cut-off events. For 11324/11324 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13421 event pairs, 110 based on Foata normal form. 11/2278 useless extension candidates. Maximal degree in co-relation 12761. Up to 1022 conditions per place. [2023-11-17 11:30:26,617 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 159 selfloop transitions, 36 changer transitions 42/238 dead transitions. [2023-11-17 11:30:26,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 238 transitions, 2623 flow [2023-11-17 11:30:26,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:30:26,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:30:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 319 transitions. [2023-11-17 11:30:26,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44305555555555554 [2023-11-17 11:30:26,619 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 319 transitions. [2023-11-17 11:30:26,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 319 transitions. [2023-11-17 11:30:26,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:26,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 319 transitions. [2023-11-17 11:30:26,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 26.583333333333332) internal successors, (319), 12 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:26,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:26,622 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:26,622 INFO L175 Difference]: Start difference. First operand has 70 places, 89 transitions, 892 flow. Second operand 12 states and 319 transitions. [2023-11-17 11:30:26,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 238 transitions, 2623 flow [2023-11-17 11:30:26,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 238 transitions, 2563 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-17 11:30:26,654 INFO L231 Difference]: Finished difference. Result has 83 places, 96 transitions, 1080 flow [2023-11-17 11:30:26,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1080, PETRI_PLACES=83, PETRI_TRANSITIONS=96} [2023-11-17 11:30:26,655 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 47 predicate places. [2023-11-17 11:30:26,656 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 96 transitions, 1080 flow [2023-11-17 11:30:26,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:26,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:26,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:26,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 11:30:26,656 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:30:26,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:26,657 INFO L85 PathProgramCache]: Analyzing trace with hash -117876216, now seen corresponding path program 1 times [2023-11-17 11:30:26,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:26,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946181817] [2023-11-17 11:30:26,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:26,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:26,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:26,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:26,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946181817] [2023-11-17 11:30:26,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946181817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:26,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:26,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:30:26,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238655565] [2023-11-17 11:30:26,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:26,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:30:26,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:26,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:30:26,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:30:26,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2023-11-17 11:30:26,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 96 transitions, 1080 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:26,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:26,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2023-11-17 11:30:26,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:27,263 INFO L124 PetriNetUnfolderBase]: 893/1600 cut-off events. [2023-11-17 11:30:27,263 INFO L125 PetriNetUnfolderBase]: For 13335/13335 co-relation queries the response was YES. [2023-11-17 11:30:27,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9969 conditions, 1600 events. 893/1600 cut-off events. For 13335/13335 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9027 event pairs, 187 based on Foata normal form. 55/1653 useless extension candidates. Maximal degree in co-relation 9931. Up to 763 conditions per place. [2023-11-17 11:30:27,278 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 152 selfloop transitions, 10 changer transitions 15/178 dead transitions. [2023-11-17 11:30:27,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 178 transitions, 2403 flow [2023-11-17 11:30:27,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:30:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:30:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2023-11-17 11:30:27,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2023-11-17 11:30:27,280 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 118 transitions. [2023-11-17 11:30:27,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 118 transitions. [2023-11-17 11:30:27,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:27,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 118 transitions. [2023-11-17 11:30:27,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:27,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 60.0) internal successors, (360), 6 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:27,282 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 60.0) internal successors, (360), 6 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:27,282 INFO L175 Difference]: Start difference. First operand has 83 places, 96 transitions, 1080 flow. Second operand 5 states and 118 transitions. [2023-11-17 11:30:27,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 178 transitions, 2403 flow [2023-11-17 11:30:27,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 178 transitions, 2113 flow, removed 73 selfloop flow, removed 8 redundant places. [2023-11-17 11:30:27,311 INFO L231 Difference]: Finished difference. Result has 78 places, 91 transitions, 884 flow [2023-11-17 11:30:27,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=884, PETRI_PLACES=78, PETRI_TRANSITIONS=91} [2023-11-17 11:30:27,312 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 42 predicate places. [2023-11-17 11:30:27,312 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 91 transitions, 884 flow [2023-11-17 11:30:27,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:27,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:27,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:27,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 11:30:27,313 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:30:27,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:27,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1683592991, now seen corresponding path program 1 times [2023-11-17 11:30:27,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:27,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976579325] [2023-11-17 11:30:27,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:27,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:27,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:27,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976579325] [2023-11-17 11:30:27,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976579325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:27,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:27,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:30:27,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468302204] [2023-11-17 11:30:27,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:27,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:30:27,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:27,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:30:27,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:30:27,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 60 [2023-11-17 11:30:27,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 91 transitions, 884 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:27,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:27,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 60 [2023-11-17 11:30:27,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:28,139 INFO L124 PetriNetUnfolderBase]: 1528/2705 cut-off events. [2023-11-17 11:30:28,139 INFO L125 PetriNetUnfolderBase]: For 18034/18034 co-relation queries the response was YES. [2023-11-17 11:30:28,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15734 conditions, 2705 events. 1528/2705 cut-off events. For 18034/18034 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 16393 event pairs, 174 based on Foata normal form. 3/2708 useless extension candidates. Maximal degree in co-relation 15699. Up to 1634 conditions per place. [2023-11-17 11:30:28,156 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 81 selfloop transitions, 1 changer transitions 88/170 dead transitions. [2023-11-17 11:30:28,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 170 transitions, 1956 flow [2023-11-17 11:30:28,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:30:28,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:30:28,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2023-11-17 11:30:28,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-11-17 11:30:28,158 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 108 transitions. [2023-11-17 11:30:28,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 108 transitions. [2023-11-17 11:30:28,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:28,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 108 transitions. [2023-11-17 11:30:28,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:28,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:28,159 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:28,160 INFO L175 Difference]: Start difference. First operand has 78 places, 91 transitions, 884 flow. Second operand 4 states and 108 transitions. [2023-11-17 11:30:28,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 170 transitions, 1956 flow [2023-11-17 11:30:28,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 170 transitions, 1900 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-17 11:30:28,204 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 601 flow [2023-11-17 11:30:28,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=601, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2023-11-17 11:30:28,205 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 44 predicate places. [2023-11-17 11:30:28,206 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 601 flow [2023-11-17 11:30:28,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:28,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:28,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:28,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 11:30:28,206 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:30:28,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:28,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2016195751, now seen corresponding path program 2 times [2023-11-17 11:30:28,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:28,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226461716] [2023-11-17 11:30:28,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:28,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:29,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:29,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:29,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226461716] [2023-11-17 11:30:29,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226461716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:29,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:29,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:30:29,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914156317] [2023-11-17 11:30:29,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:29,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:30:29,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:29,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:30:29,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:30:29,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2023-11-17 11:30:29,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 601 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:29,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:29,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2023-11-17 11:30:29,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:30,258 INFO L124 PetriNetUnfolderBase]: 918/1800 cut-off events. [2023-11-17 11:30:30,259 INFO L125 PetriNetUnfolderBase]: For 9454/9454 co-relation queries the response was YES. [2023-11-17 11:30:30,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10142 conditions, 1800 events. 918/1800 cut-off events. For 9454/9454 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 11052 event pairs, 206 based on Foata normal form. 3/1793 useless extension candidates. Maximal degree in co-relation 10106. Up to 811 conditions per place. [2023-11-17 11:30:30,269 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 41 selfloop transitions, 2 changer transitions 73/117 dead transitions. [2023-11-17 11:30:30,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 1246 flow [2023-11-17 11:30:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:30:30,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:30:30,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2023-11-17 11:30:30,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-11-17 11:30:30,271 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 144 transitions. [2023-11-17 11:30:30,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 144 transitions. [2023-11-17 11:30:30,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:30,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 144 transitions. [2023-11-17 11:30:30,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:30,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:30,273 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:30,273 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 601 flow. Second operand 6 states and 144 transitions. [2023-11-17 11:30:30,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 1246 flow [2023-11-17 11:30:30,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 117 transitions, 1209 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-17 11:30:30,300 INFO L231 Difference]: Finished difference. Result has 80 places, 42 transitions, 337 flow [2023-11-17 11:30:30,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=337, PETRI_PLACES=80, PETRI_TRANSITIONS=42} [2023-11-17 11:30:30,301 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 44 predicate places. [2023-11-17 11:30:30,301 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 42 transitions, 337 flow [2023-11-17 11:30:30,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:30,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:30,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:30,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 11:30:30,301 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:30:30,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:30,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1557327309, now seen corresponding path program 3 times [2023-11-17 11:30:30,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:30,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183718303] [2023-11-17 11:30:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:30,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:31,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:31,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:31,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183718303] [2023-11-17 11:30:31,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183718303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:31,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:31,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:30:31,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053188770] [2023-11-17 11:30:31,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:31,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:30:31,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:31,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:30:31,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:30:31,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2023-11-17 11:30:31,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 42 transitions, 337 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:31,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:31,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2023-11-17 11:30:31,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:31,721 INFO L124 PetriNetUnfolderBase]: 207/448 cut-off events. [2023-11-17 11:30:31,722 INFO L125 PetriNetUnfolderBase]: For 2519/2520 co-relation queries the response was YES. [2023-11-17 11:30:31,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2395 conditions, 448 events. 207/448 cut-off events. For 2519/2520 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1898 event pairs, 137 based on Foata normal form. 1/444 useless extension candidates. Maximal degree in co-relation 2363. Up to 291 conditions per place. [2023-11-17 11:30:31,724 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 31 selfloop transitions, 4 changer transitions 25/61 dead transitions. [2023-11-17 11:30:31,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 61 transitions, 577 flow [2023-11-17 11:30:31,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:30:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:30:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2023-11-17 11:30:31,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2023-11-17 11:30:31,726 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 134 transitions. [2023-11-17 11:30:31,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 134 transitions. [2023-11-17 11:30:31,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:31,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 134 transitions. [2023-11-17 11:30:31,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:31,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:31,728 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:31,728 INFO L175 Difference]: Start difference. First operand has 80 places, 42 transitions, 337 flow. Second operand 6 states and 134 transitions. [2023-11-17 11:30:31,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 61 transitions, 577 flow [2023-11-17 11:30:31,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 61 transitions, 509 flow, removed 26 selfloop flow, removed 12 redundant places. [2023-11-17 11:30:31,735 INFO L231 Difference]: Finished difference. Result has 66 places, 35 transitions, 232 flow [2023-11-17 11:30:31,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=66, PETRI_TRANSITIONS=35} [2023-11-17 11:30:31,735 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2023-11-17 11:30:31,735 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 35 transitions, 232 flow [2023-11-17 11:30:31,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:31,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:31,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:31,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 11:30:31,736 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:30:31,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:31,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1514384549, now seen corresponding path program 4 times [2023-11-17 11:30:31,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:31,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028645538] [2023-11-17 11:30:31,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:31,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:33,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:33,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028645538] [2023-11-17 11:30:33,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028645538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:33,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:33,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:30:33,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712505481] [2023-11-17 11:30:33,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:33,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:30:33,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:33,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:30:33,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:30:33,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2023-11-17 11:30:33,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 35 transitions, 232 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:33,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:33,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2023-11-17 11:30:33,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:33,297 INFO L124 PetriNetUnfolderBase]: 158/334 cut-off events. [2023-11-17 11:30:33,297 INFO L125 PetriNetUnfolderBase]: For 1235/1235 co-relation queries the response was YES. [2023-11-17 11:30:33,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 334 events. 158/334 cut-off events. For 1235/1235 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1249 event pairs, 22 based on Foata normal form. 1/334 useless extension candidates. Maximal degree in co-relation 1610. Up to 118 conditions per place. [2023-11-17 11:30:33,299 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2023-11-17 11:30:33,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 528 flow [2023-11-17 11:30:33,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:30:33,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:30:33,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2023-11-17 11:30:33,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35208333333333336 [2023-11-17 11:30:33,300 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 169 transitions. [2023-11-17 11:30:33,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 169 transitions. [2023-11-17 11:30:33,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:33,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 169 transitions. [2023-11-17 11:30:33,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:33,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 60.0) internal successors, (540), 9 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:33,304 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 60.0) internal successors, (540), 9 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:33,304 INFO L175 Difference]: Start difference. First operand has 66 places, 35 transitions, 232 flow. Second operand 8 states and 169 transitions. [2023-11-17 11:30:33,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 528 flow [2023-11-17 11:30:33,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 61 transitions, 487 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-17 11:30:33,308 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2023-11-17 11:30:33,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2023-11-17 11:30:33,309 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2023-11-17 11:30:33,309 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2023-11-17 11:30:33,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:33,312 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-17 11:30:33,312 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-17 11:30:33,312 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-17 11:30:33,312 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-11-17 11:30:33,313 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-11-17 11:30:33,313 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-17 11:30:33,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 11:30:33,313 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-17 11:30:33,319 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:30:33,319 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:30:33,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:30:33 BasicIcfg [2023-11-17 11:30:33,324 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:30:33,324 INFO L158 Benchmark]: Toolchain (without parser) took 24754.45ms. Allocated memory was 190.8MB in the beginning and 766.5MB in the end (delta: 575.7MB). Free memory was 133.1MB in the beginning and 300.9MB in the end (delta: -167.9MB). Peak memory consumption was 408.4MB. Max. memory is 8.0GB. [2023-11-17 11:30:33,324 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 190.8MB. Free memory is still 145.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:30:33,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 681.77ms. Allocated memory was 190.8MB in the beginning and 283.1MB in the end (delta: 92.3MB). Free memory was 132.8MB in the beginning and 247.8MB in the end (delta: -115.0MB). Peak memory consumption was 30.0MB. Max. memory is 8.0GB. [2023-11-17 11:30:33,325 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.29ms. Allocated memory is still 283.1MB. Free memory was 247.8MB in the beginning and 244.1MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 11:30:33,325 INFO L158 Benchmark]: Boogie Preprocessor took 58.50ms. Allocated memory is still 283.1MB. Free memory was 244.1MB in the beginning and 241.3MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 11:30:33,325 INFO L158 Benchmark]: RCFGBuilder took 939.48ms. Allocated memory is still 283.1MB. Free memory was 241.3MB in the beginning and 167.6MB in the end (delta: 73.7MB). Peak memory consumption was 73.4MB. Max. memory is 8.0GB. [2023-11-17 11:30:33,325 INFO L158 Benchmark]: TraceAbstraction took 22989.45ms. Allocated memory was 283.1MB in the beginning and 766.5MB in the end (delta: 483.4MB). Free memory was 167.1MB in the beginning and 300.9MB in the end (delta: -133.9MB). Peak memory consumption was 349.0MB. Max. memory is 8.0GB. [2023-11-17 11:30:33,326 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 190.8MB. Free memory is still 145.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 681.77ms. Allocated memory was 190.8MB in the beginning and 283.1MB in the end (delta: 92.3MB). Free memory was 132.8MB in the beginning and 247.8MB in the end (delta: -115.0MB). Peak memory consumption was 30.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 77.29ms. Allocated memory is still 283.1MB. Free memory was 247.8MB in the beginning and 244.1MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.50ms. Allocated memory is still 283.1MB. Free memory was 244.1MB in the beginning and 241.3MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 939.48ms. Allocated memory is still 283.1MB. Free memory was 241.3MB in the beginning and 167.6MB in the end (delta: 73.7MB). Peak memory consumption was 73.4MB. Max. memory is 8.0GB. * TraceAbstraction took 22989.45ms. Allocated memory was 283.1MB in the beginning and 766.5MB in the end (delta: 483.4MB). Free memory was 167.1MB in the beginning and 300.9MB in the end (delta: -133.9MB). Peak memory consumption was 349.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 48 PlacesBefore, 36 PlacesAfterwards, 39 TransitionsBefore, 26 TransitionsAfterwards, 890 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 18 TotalNumberOfCompositions, 2764 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 947, independent: 831, independent conditional: 0, independent unconditional: 831, dependent: 116, dependent conditional: 0, dependent unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 544, independent: 496, independent conditional: 0, independent unconditional: 496, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 544, independent: 488, independent conditional: 0, independent unconditional: 488, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 56, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 522, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 504, dependent conditional: 0, dependent unconditional: 504, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 947, independent: 335, independent conditional: 0, independent unconditional: 335, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 544, unknown conditional: 0, unknown unconditional: 544] , Statistics on independence cache: Total cache size (in pairs): 133, Positive cache size: 108, Positive conditional cache size: 0, Positive unconditional cache size: 108, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 70 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 22.9s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 9.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 415 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 415 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 201 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2090 IncrementalHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 201 mSolverCounterUnsat, 1 mSDtfsCounter, 2090 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1080occurred in iteration=10, InterpolantAutomatonStates: 84, 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, 0.6s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 235 ConstructedInterpolants, 0 QuantifiedInterpolants, 2538 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 11:30:33,346 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...