/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:03:41,169 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:03:41,257 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 15:03:41,282 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:03:41,282 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:03:41,283 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:03:41,283 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:03:41,284 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:03:41,284 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:03:41,284 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:03:41,285 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:03:41,285 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:03:41,285 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:03:41,285 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:03:41,286 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:03:41,286 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:03:41,286 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:03:41,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:03:41,287 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:03:41,287 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:03:41,288 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:03:41,292 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:03:41,292 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:03:41,292 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:03:41,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:03:41,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:03:41,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:03:41,297 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:03:41,297 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:03:41,297 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:03:41,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:03:41,298 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:03:41,298 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:03:41,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:03:41,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:03:41,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:03:41,575 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:03:41,575 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:03:41,576 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2023-11-17 15:03:42,797 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:03:43,015 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:03:43,016 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2023-11-17 15:03:43,030 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6419c7e27/e9bd413438de49dbbe0817e4461b3593/FLAG1418b63c5 [2023-11-17 15:03:43,042 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6419c7e27/e9bd413438de49dbbe0817e4461b3593 [2023-11-17 15:03:43,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:03:43,045 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:03:43,046 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:03:43,046 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:03:43,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:03:43,050 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:03:43" (1/1) ... [2023-11-17 15:03:43,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8e6579e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:43, skipping insertion in model container [2023-11-17 15:03:43,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:03:43" (1/1) ... [2023-11-17 15:03:43,098 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:03:43,391 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2023-11-17 15:03:43,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:03:43,404 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:03:43,455 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2023-11-17 15:03:43,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:03:43,489 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:03:43,490 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:03:43,496 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:03:43,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:43 WrapperNode [2023-11-17 15:03:43,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:03:43,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:03:43,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:03:43,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:03:43,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:43" (1/1) ... [2023-11-17 15:03:43,532 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:43" (1/1) ... [2023-11-17 15:03:43,549 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2023-11-17 15:03:43,549 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:03:43,550 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:03:43,550 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:03:43,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:03:43,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:43" (1/1) ... [2023-11-17 15:03:43,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:43" (1/1) ... [2023-11-17 15:03:43,564 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:43" (1/1) ... [2023-11-17 15:03:43,564 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:43" (1/1) ... [2023-11-17 15:03:43,569 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:43" (1/1) ... [2023-11-17 15:03:43,572 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:43" (1/1) ... [2023-11-17 15:03:43,581 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:43" (1/1) ... [2023-11-17 15:03:43,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:43" (1/1) ... [2023-11-17 15:03:43,590 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:03:43,591 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:03:43,591 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:03:43,591 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:03:43,592 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:43" (1/1) ... [2023-11-17 15:03:43,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:03:43,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:43,623 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 15:03:43,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 15:03:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-17 15:03:43,645 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-17 15:03:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-17 15:03:43,645 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-17 15:03:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:03:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:03:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:03:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:03:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:03:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:03:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:03:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:03:43,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:03:43,647 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:03:43,754 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:03:43,755 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:03:43,885 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:03:43,894 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:03:43,894 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 15:03:43,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:03:43 BoogieIcfgContainer [2023-11-17 15:03:43,896 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:03:43,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:03:43,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:03:43,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:03:43,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:03:43" (1/3) ... [2023-11-17 15:03:43,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baa2aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:03:43, skipping insertion in model container [2023-11-17 15:03:43,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:43" (2/3) ... [2023-11-17 15:03:43,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baa2aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:03:43, skipping insertion in model container [2023-11-17 15:03:43,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:03:43" (3/3) ... [2023-11-17 15:03:43,904 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2023-11-17 15:03:43,943 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:03:43,943 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:03:43,943 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:03:44,001 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:03:44,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 69 transitions, 146 flow [2023-11-17 15:03:44,083 INFO L124 PetriNetUnfolderBase]: 5/67 cut-off events. [2023-11-17 15:03:44,083 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:03:44,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 67 events. 5/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-17 15:03:44,089 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 69 transitions, 146 flow [2023-11-17 15:03:44,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 67 transitions, 140 flow [2023-11-17 15:03:44,095 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:03:44,108 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 67 transitions, 140 flow [2023-11-17 15:03:44,111 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 67 transitions, 140 flow [2023-11-17 15:03:44,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 67 transitions, 140 flow [2023-11-17 15:03:44,128 INFO L124 PetriNetUnfolderBase]: 5/67 cut-off events. [2023-11-17 15:03:44,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:03:44,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 67 events. 5/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-17 15:03:44,131 INFO L119 LiptonReduction]: Number of co-enabled transitions 1296 [2023-11-17 15:03:46,084 INFO L134 LiptonReduction]: Checked pairs total: 1192 [2023-11-17 15:03:46,085 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-11-17 15:03:46,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:03:46,106 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;@20b8e56e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:03:46,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 15:03:46,109 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:03:46,109 INFO L124 PetriNetUnfolderBase]: 3/13 cut-off events. [2023-11-17 15:03:46,110 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:03:46,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:46,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 15:03:46,111 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:46,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:46,115 INFO L85 PathProgramCache]: Analyzing trace with hash -425197577, now seen corresponding path program 1 times [2023-11-17 15:03:46,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:46,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917613784] [2023-11-17 15:03:46,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:46,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:46,514 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 15:03:46,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:46,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917613784] [2023-11-17 15:03:46,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917613784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:03:46,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:03:46,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:03:46,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001633665] [2023-11-17 15:03:46,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:03:46,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:03:46,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:46,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:03:46,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:03:46,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:46,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:46,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:46,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:46,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:46,668 INFO L124 PetriNetUnfolderBase]: 124/200 cut-off events. [2023-11-17 15:03:46,668 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 15:03:46,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 200 events. 124/200 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 587 event pairs, 24 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 406. Up to 122 conditions per place. [2023-11-17 15:03:46,674 INFO L140 encePairwiseOnDemand]: 124/131 looper letters, 23 selfloop transitions, 7 changer transitions 5/35 dead transitions. [2023-11-17 15:03:46,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 35 transitions, 149 flow [2023-11-17 15:03:46,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:03:46,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:03:46,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 304 transitions. [2023-11-17 15:03:46,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46412213740458014 [2023-11-17 15:03:46,687 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 304 transitions. [2023-11-17 15:03:46,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 304 transitions. [2023-11-17 15:03:46,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:46,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 304 transitions. [2023-11-17 15:03:46,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:46,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:46,698 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:46,700 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 5 states and 304 transitions. [2023-11-17 15:03:46,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 35 transitions, 149 flow [2023-11-17 15:03:46,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 35 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:03:46,704 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 75 flow [2023-11-17 15:03:46,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2023-11-17 15:03:46,710 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 5 predicate places. [2023-11-17 15:03:46,710 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 75 flow [2023-11-17 15:03:46,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:46,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:46,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:46,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:03:46,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:46,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:46,712 INFO L85 PathProgramCache]: Analyzing trace with hash -566238261, now seen corresponding path program 1 times [2023-11-17 15:03:46,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:46,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380312031] [2023-11-17 15:03:46,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:46,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:46,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:46,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:46,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380312031] [2023-11-17 15:03:46,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380312031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:03:46,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:03:46,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:03:46,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847349773] [2023-11-17 15:03:46,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:03:46,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:03:46,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:46,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:03:46,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:03:46,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:46,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:46,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:46,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:46,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:46,900 INFO L124 PetriNetUnfolderBase]: 92/157 cut-off events. [2023-11-17 15:03:46,901 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-17 15:03:46,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 157 events. 92/157 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 440 event pairs, 19 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 441. Up to 61 conditions per place. [2023-11-17 15:03:46,902 INFO L140 encePairwiseOnDemand]: 127/131 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-11-17 15:03:46,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 30 transitions, 173 flow [2023-11-17 15:03:46,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:03:46,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:03:46,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2023-11-17 15:03:46,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45229007633587787 [2023-11-17 15:03:46,905 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 237 transitions. [2023-11-17 15:03:46,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 237 transitions. [2023-11-17 15:03:46,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:46,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 237 transitions. [2023-11-17 15:03:46,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:46,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:46,908 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:46,908 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 75 flow. Second operand 4 states and 237 transitions. [2023-11-17 15:03:46,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 30 transitions, 173 flow [2023-11-17 15:03:46,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 30 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:03:46,910 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 119 flow [2023-11-17 15:03:46,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2023-11-17 15:03:46,911 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 9 predicate places. [2023-11-17 15:03:46,911 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 119 flow [2023-11-17 15:03:46,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:46,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:46,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:46,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:03:46,912 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:46,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:46,913 INFO L85 PathProgramCache]: Analyzing trace with hash -593367787, now seen corresponding path program 1 times [2023-11-17 15:03:46,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:46,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701438413] [2023-11-17 15:03:46,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:46,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:47,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:47,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701438413] [2023-11-17 15:03:47,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701438413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:03:47,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:03:47,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:03:47,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081558798] [2023-11-17 15:03:47,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:03:47,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:03:47,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:47,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:03:47,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:03:47,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:47,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:47,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:47,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:47,104 INFO L124 PetriNetUnfolderBase]: 132/229 cut-off events. [2023-11-17 15:03:47,104 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-11-17 15:03:47,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 229 events. 132/229 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 721 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 740. Up to 101 conditions per place. [2023-11-17 15:03:47,107 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-11-17 15:03:47,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 45 transitions, 301 flow [2023-11-17 15:03:47,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:03:47,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:03:47,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2023-11-17 15:03:47,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4529262086513995 [2023-11-17 15:03:47,111 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 356 transitions. [2023-11-17 15:03:47,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 356 transitions. [2023-11-17 15:03:47,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:47,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 356 transitions. [2023-11-17 15:03:47,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.333333333333336) internal successors, (356), 6 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,117 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,117 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 119 flow. Second operand 6 states and 356 transitions. [2023-11-17 15:03:47,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 45 transitions, 301 flow [2023-11-17 15:03:47,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 45 transitions, 285 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-17 15:03:47,123 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 203 flow [2023-11-17 15:03:47,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-11-17 15:03:47,124 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 17 predicate places. [2023-11-17 15:03:47,124 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 203 flow [2023-11-17 15:03:47,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:47,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:47,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:03:47,126 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:47,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:47,126 INFO L85 PathProgramCache]: Analyzing trace with hash -593353837, now seen corresponding path program 2 times [2023-11-17 15:03:47,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:47,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255029572] [2023-11-17 15:03:47,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:47,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:47,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:47,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255029572] [2023-11-17 15:03:47,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255029572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:03:47,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:03:47,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:03:47,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017057409] [2023-11-17 15:03:47,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:03:47,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:03:47,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:47,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:03:47,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:03:47,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:47,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:47,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:47,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:47,355 INFO L124 PetriNetUnfolderBase]: 132/231 cut-off events. [2023-11-17 15:03:47,355 INFO L125 PetriNetUnfolderBase]: For 553/553 co-relation queries the response was YES. [2023-11-17 15:03:47,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 231 events. 132/231 cut-off events. For 553/553 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 751 event pairs, 31 based on Foata normal form. 10/241 useless extension candidates. Maximal degree in co-relation 869. Up to 99 conditions per place. [2023-11-17 15:03:47,360 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 30 selfloop transitions, 15 changer transitions 8/53 dead transitions. [2023-11-17 15:03:47,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 422 flow [2023-11-17 15:03:47,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:03:47,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:03:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 413 transitions. [2023-11-17 15:03:47,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45038167938931295 [2023-11-17 15:03:47,362 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 413 transitions. [2023-11-17 15:03:47,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 413 transitions. [2023-11-17 15:03:47,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:47,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 413 transitions. [2023-11-17 15:03:47,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,367 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,367 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 203 flow. Second operand 7 states and 413 transitions. [2023-11-17 15:03:47,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 422 flow [2023-11-17 15:03:47,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 53 transitions, 398 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-17 15:03:47,375 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 277 flow [2023-11-17 15:03:47,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=277, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2023-11-17 15:03:47,376 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 26 predicate places. [2023-11-17 15:03:47,377 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 277 flow [2023-11-17 15:03:47,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:47,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:47,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:03:47,378 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:47,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:47,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1275101541, now seen corresponding path program 1 times [2023-11-17 15:03:47,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:47,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624090159] [2023-11-17 15:03:47,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:47,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:47,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:47,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624090159] [2023-11-17 15:03:47,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624090159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:03:47,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:03:47,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:03:47,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099071783] [2023-11-17 15:03:47,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:03:47,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:03:47,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:47,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:03:47,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:03:47,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:47,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:47,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:47,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:47,582 INFO L124 PetriNetUnfolderBase]: 168/295 cut-off events. [2023-11-17 15:03:47,584 INFO L125 PetriNetUnfolderBase]: For 1123/1123 co-relation queries the response was YES. [2023-11-17 15:03:47,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 295 events. 168/295 cut-off events. For 1123/1123 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1017 event pairs, 16 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1223. Up to 79 conditions per place. [2023-11-17 15:03:47,589 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 37 selfloop transitions, 22 changer transitions 3/62 dead transitions. [2023-11-17 15:03:47,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 62 transitions, 555 flow [2023-11-17 15:03:47,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:03:47,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:03:47,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 470 transitions. [2023-11-17 15:03:47,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484732824427481 [2023-11-17 15:03:47,596 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 470 transitions. [2023-11-17 15:03:47,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 470 transitions. [2023-11-17 15:03:47,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:47,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 470 transitions. [2023-11-17 15:03:47,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.75) internal successors, (470), 8 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,599 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,599 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 277 flow. Second operand 8 states and 470 transitions. [2023-11-17 15:03:47,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 62 transitions, 555 flow [2023-11-17 15:03:47,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 523 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-17 15:03:47,605 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 389 flow [2023-11-17 15:03:47,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=389, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2023-11-17 15:03:47,608 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 35 predicate places. [2023-11-17 15:03:47,608 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 389 flow [2023-11-17 15:03:47,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:47,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:47,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:03:47,609 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:47,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:47,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1305502311, now seen corresponding path program 2 times [2023-11-17 15:03:47,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:47,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145638976] [2023-11-17 15:03:47,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:47,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:47,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:47,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145638976] [2023-11-17 15:03:47,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145638976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:03:47,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:03:47,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:03:47,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187598662] [2023-11-17 15:03:47,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:03:47,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:03:47,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:47,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:03:47,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:03:47,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:47,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:47,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:47,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:47,811 INFO L124 PetriNetUnfolderBase]: 160/283 cut-off events. [2023-11-17 15:03:47,811 INFO L125 PetriNetUnfolderBase]: For 1704/1704 co-relation queries the response was YES. [2023-11-17 15:03:47,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 283 events. 160/283 cut-off events. For 1704/1704 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 993 event pairs, 22 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1337. Up to 69 conditions per place. [2023-11-17 15:03:47,813 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 30 selfloop transitions, 22 changer transitions 8/60 dead transitions. [2023-11-17 15:03:47,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 633 flow [2023-11-17 15:03:47,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:03:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:03:47,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 411 transitions. [2023-11-17 15:03:47,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44820065430752454 [2023-11-17 15:03:47,829 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 411 transitions. [2023-11-17 15:03:47,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 411 transitions. [2023-11-17 15:03:47,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:47,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 411 transitions. [2023-11-17 15:03:47,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 58.714285714285715) internal successors, (411), 7 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,832 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,832 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 389 flow. Second operand 7 states and 411 transitions. [2023-11-17 15:03:47,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 633 flow [2023-11-17 15:03:47,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 579 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-11-17 15:03:47,839 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 429 flow [2023-11-17 15:03:47,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=429, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2023-11-17 15:03:47,840 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 39 predicate places. [2023-11-17 15:03:47,840 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 429 flow [2023-11-17 15:03:47,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:47,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:47,840 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:47,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:03:47,841 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:47,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:47,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1815886077, now seen corresponding path program 3 times [2023-11-17 15:03:47,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:47,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593410004] [2023-11-17 15:03:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:47,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:47,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:47,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593410004] [2023-11-17 15:03:47,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593410004] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:47,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733208388] [2023-11-17 15:03:47,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:03:47,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:47,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:47,965 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:47,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 15:03:48,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:03:48,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:03:48,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 15:03:48,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:48,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:48,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:03:48,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:48,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733208388] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:03:48,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:03:48,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-17 15:03:48,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470348860] [2023-11-17 15:03:48,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:03:48,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:03:48,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:48,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:03:48,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:03:48,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:48,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 429 flow. Second operand has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:48,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:48,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:48,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:48,505 INFO L124 PetriNetUnfolderBase]: 208/363 cut-off events. [2023-11-17 15:03:48,505 INFO L125 PetriNetUnfolderBase]: For 2833/2833 co-relation queries the response was YES. [2023-11-17 15:03:48,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 363 events. 208/363 cut-off events. For 2833/2833 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1283 event pairs, 18 based on Foata normal form. 16/379 useless extension candidates. Maximal degree in co-relation 1839. Up to 91 conditions per place. [2023-11-17 15:03:48,508 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 34 selfloop transitions, 37 changer transitions 22/93 dead transitions. [2023-11-17 15:03:48,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 93 transitions, 1039 flow [2023-11-17 15:03:48,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:03:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:03:48,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 816 transitions. [2023-11-17 15:03:48,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44492911668484186 [2023-11-17 15:03:48,512 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 816 transitions. [2023-11-17 15:03:48,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 816 transitions. [2023-11-17 15:03:48,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:48,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 816 transitions. [2023-11-17 15:03:48,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 58.285714285714285) internal successors, (816), 14 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:48,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 131.0) internal successors, (1965), 15 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:48,517 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 131.0) internal successors, (1965), 15 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:48,518 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 429 flow. Second operand 14 states and 816 transitions. [2023-11-17 15:03:48,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 93 transitions, 1039 flow [2023-11-17 15:03:48,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 93 transitions, 972 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-11-17 15:03:48,525 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 748 flow [2023-11-17 15:03:48,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=748, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2023-11-17 15:03:48,526 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 51 predicate places. [2023-11-17 15:03:48,526 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 748 flow [2023-11-17 15:03:48,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:48,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:48,527 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:48,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 15:03:48,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:48,733 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:48,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:48,734 INFO L85 PathProgramCache]: Analyzing trace with hash 173906857, now seen corresponding path program 4 times [2023-11-17 15:03:48,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:48,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373505394] [2023-11-17 15:03:48,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:48,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:48,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:48,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373505394] [2023-11-17 15:03:48,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373505394] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:48,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210279420] [2023-11-17 15:03:48,891 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:03:48,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:48,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:48,892 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:48,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 15:03:48,969 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:03:48,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:03:48,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 15:03:48,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:49,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:49,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:03:49,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:49,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210279420] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:03:49,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:03:49,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-17 15:03:49,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485454024] [2023-11-17 15:03:49,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:03:49,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 15:03:49,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:49,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 15:03:49,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:03:49,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:49,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 748 flow. Second operand has 16 states, 16 states have (on average 54.8125) internal successors, (877), 16 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:49,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:49,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:49,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:49,467 INFO L124 PetriNetUnfolderBase]: 264/475 cut-off events. [2023-11-17 15:03:49,467 INFO L125 PetriNetUnfolderBase]: For 5416/5416 co-relation queries the response was YES. [2023-11-17 15:03:49,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2701 conditions, 475 events. 264/475 cut-off events. For 5416/5416 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1706 event pairs, 55 based on Foata normal form. 32/507 useless extension candidates. Maximal degree in co-relation 2665. Up to 249 conditions per place. [2023-11-17 15:03:49,471 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 65 selfloop transitions, 27 changer transitions 27/119 dead transitions. [2023-11-17 15:03:49,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 119 transitions, 1566 flow [2023-11-17 15:03:49,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 15:03:49,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 15:03:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 931 transitions. [2023-11-17 15:03:49,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441793893129771 [2023-11-17 15:03:49,474 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 931 transitions. [2023-11-17 15:03:49,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 931 transitions. [2023-11-17 15:03:49,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:49,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 931 transitions. [2023-11-17 15:03:49,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 58.1875) internal successors, (931), 16 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:49,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 131.0) internal successors, (2227), 17 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:49,480 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 131.0) internal successors, (2227), 17 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:49,481 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 748 flow. Second operand 16 states and 931 transitions. [2023-11-17 15:03:49,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 119 transitions, 1566 flow [2023-11-17 15:03:49,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 119 transitions, 1187 flow, removed 176 selfloop flow, removed 5 redundant places. [2023-11-17 15:03:49,493 INFO L231 Difference]: Finished difference. Result has 89 places, 71 transitions, 836 flow [2023-11-17 15:03:49,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=836, PETRI_PLACES=89, PETRI_TRANSITIONS=71} [2023-11-17 15:03:49,494 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 71 predicate places. [2023-11-17 15:03:49,494 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 71 transitions, 836 flow [2023-11-17 15:03:49,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.8125) internal successors, (877), 16 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:49,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:49,495 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:49,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 15:03:49,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-17 15:03:49,701 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:49,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:49,701 INFO L85 PathProgramCache]: Analyzing trace with hash 118604779, now seen corresponding path program 5 times [2023-11-17 15:03:49,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:49,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911432035] [2023-11-17 15:03:49,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:49,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:49,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:49,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911432035] [2023-11-17 15:03:49,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911432035] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:49,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409065166] [2023-11-17 15:03:49,819 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:03:49,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:49,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:49,820 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:49,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 15:03:49,895 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 15:03:49,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:03:49,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 15:03:49,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:49,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:03:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:50,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409065166] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:03:50,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:03:50,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 15:03:50,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86368666] [2023-11-17 15:03:50,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:03:50,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 15:03:50,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:50,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 15:03:50,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-17 15:03:50,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:50,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 71 transitions, 836 flow. Second operand has 17 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:50,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:50,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:50,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:50,462 INFO L124 PetriNetUnfolderBase]: 418/767 cut-off events. [2023-11-17 15:03:50,462 INFO L125 PetriNetUnfolderBase]: For 14645/14645 co-relation queries the response was YES. [2023-11-17 15:03:50,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4390 conditions, 767 events. 418/767 cut-off events. For 14645/14645 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3409 event pairs, 42 based on Foata normal form. 32/799 useless extension candidates. Maximal degree in co-relation 4345. Up to 230 conditions per place. [2023-11-17 15:03:50,469 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 73 selfloop transitions, 73 changer transitions 37/183 dead transitions. [2023-11-17 15:03:50,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 183 transitions, 2228 flow [2023-11-17 15:03:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 15:03:50,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 15:03:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1280 transitions. [2023-11-17 15:03:50,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441360166551006 [2023-11-17 15:03:50,473 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1280 transitions. [2023-11-17 15:03:50,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1280 transitions. [2023-11-17 15:03:50,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:50,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1280 transitions. [2023-11-17 15:03:50,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.18181818181818) internal successors, (1280), 22 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:50,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 131.0) internal successors, (3013), 23 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:50,484 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 131.0) internal successors, (3013), 23 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:50,484 INFO L175 Difference]: Start difference. First operand has 89 places, 71 transitions, 836 flow. Second operand 22 states and 1280 transitions. [2023-11-17 15:03:50,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 183 transitions, 2228 flow [2023-11-17 15:03:50,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 183 transitions, 2087 flow, removed 61 selfloop flow, removed 4 redundant places. [2023-11-17 15:03:50,520 INFO L231 Difference]: Finished difference. Result has 120 places, 109 transitions, 1567 flow [2023-11-17 15:03:50,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1567, PETRI_PLACES=120, PETRI_TRANSITIONS=109} [2023-11-17 15:03:50,521 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 102 predicate places. [2023-11-17 15:03:50,521 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 109 transitions, 1567 flow [2023-11-17 15:03:50,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:50,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:50,522 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:50,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 15:03:50,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:50,731 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:50,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:50,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1404696555, now seen corresponding path program 6 times [2023-11-17 15:03:50,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:50,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110652396] [2023-11-17 15:03:50,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:50,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:50,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:50,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110652396] [2023-11-17 15:03:50,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110652396] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:50,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272138609] [2023-11-17 15:03:50,849 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:03:50,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:50,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:50,851 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:50,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 15:03:50,932 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-17 15:03:50,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:03:50,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 15:03:50,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:50,962 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:50,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:03:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:51,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272138609] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:03:51,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:03:51,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-17 15:03:51,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824906833] [2023-11-17 15:03:51,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:03:51,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 15:03:51,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:51,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 15:03:51,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:03:51,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:51,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 109 transitions, 1567 flow. Second operand has 16 states, 16 states have (on average 54.8125) internal successors, (877), 16 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:51,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:51,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:51,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:51,525 INFO L124 PetriNetUnfolderBase]: 618/1123 cut-off events. [2023-11-17 15:03:51,525 INFO L125 PetriNetUnfolderBase]: For 42544/42544 co-relation queries the response was YES. [2023-11-17 15:03:51,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8373 conditions, 1123 events. 618/1123 cut-off events. For 42544/42544 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5459 event pairs, 30 based on Foata normal form. 36/1159 useless extension candidates. Maximal degree in co-relation 8313. Up to 358 conditions per place. [2023-11-17 15:03:51,536 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 71 selfloop transitions, 135 changer transitions 41/247 dead transitions. [2023-11-17 15:03:51,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 247 transitions, 3949 flow [2023-11-17 15:03:51,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 15:03:51,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 15:03:51,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1571 transitions. [2023-11-17 15:03:51,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44416171897087925 [2023-11-17 15:03:51,540 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1571 transitions. [2023-11-17 15:03:51,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1571 transitions. [2023-11-17 15:03:51,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:51,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1571 transitions. [2023-11-17 15:03:51,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 58.18518518518518) internal successors, (1571), 27 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:51,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 131.0) internal successors, (3668), 28 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:51,550 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 131.0) internal successors, (3668), 28 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:51,550 INFO L175 Difference]: Start difference. First operand has 120 places, 109 transitions, 1567 flow. Second operand 27 states and 1571 transitions. [2023-11-17 15:03:51,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 247 transitions, 3949 flow [2023-11-17 15:03:51,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 247 transitions, 3594 flow, removed 169 selfloop flow, removed 4 redundant places. [2023-11-17 15:03:51,642 INFO L231 Difference]: Finished difference. Result has 157 places, 159 transitions, 2747 flow [2023-11-17 15:03:51,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2747, PETRI_PLACES=157, PETRI_TRANSITIONS=159} [2023-11-17 15:03:51,643 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 139 predicate places. [2023-11-17 15:03:51,643 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 159 transitions, 2747 flow [2023-11-17 15:03:51,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.8125) internal successors, (877), 16 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:51,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:51,644 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:51,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 15:03:51,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:51,850 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:51,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:51,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1794307131, now seen corresponding path program 7 times [2023-11-17 15:03:51,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:51,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5233068] [2023-11-17 15:03:51,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:51,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:51,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:51,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5233068] [2023-11-17 15:03:51,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5233068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:51,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797709384] [2023-11-17 15:03:51,985 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:03:51,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:51,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:51,986 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:52,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 15:03:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:52,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 15:03:52,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:52,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:03:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:52,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797709384] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:03:52,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:03:52,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-11-17 15:03:52,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922265637] [2023-11-17 15:03:52,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:03:52,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 15:03:52,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:52,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 15:03:52,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:03:52,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:52,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 159 transitions, 2747 flow. Second operand has 18 states, 18 states have (on average 54.72222222222222) internal successors, (985), 18 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:52,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:52,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:52,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:52,896 INFO L124 PetriNetUnfolderBase]: 762/1387 cut-off events. [2023-11-17 15:03:52,896 INFO L125 PetriNetUnfolderBase]: For 93100/93100 co-relation queries the response was YES. [2023-11-17 15:03:52,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13201 conditions, 1387 events. 762/1387 cut-off events. For 93100/93100 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6952 event pairs, 12 based on Foata normal form. 40/1427 useless extension candidates. Maximal degree in co-relation 13126. Up to 461 conditions per place. [2023-11-17 15:03:52,912 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 62 selfloop transitions, 177 changer transitions 54/293 dead transitions. [2023-11-17 15:03:52,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 293 transitions, 6258 flow [2023-11-17 15:03:52,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-17 15:03:52,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-17 15:03:52,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1744 transitions. [2023-11-17 15:03:52,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44376590330788807 [2023-11-17 15:03:52,916 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1744 transitions. [2023-11-17 15:03:52,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1744 transitions. [2023-11-17 15:03:52,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:52,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1744 transitions. [2023-11-17 15:03:52,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 58.13333333333333) internal successors, (1744), 30 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:52,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 131.0) internal successors, (4061), 31 states have internal predecessors, (4061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:52,925 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 131.0) internal successors, (4061), 31 states have internal predecessors, (4061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:52,925 INFO L175 Difference]: Start difference. First operand has 157 places, 159 transitions, 2747 flow. Second operand 30 states and 1744 transitions. [2023-11-17 15:03:52,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 293 transitions, 6258 flow [2023-11-17 15:03:53,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 293 transitions, 4751 flow, removed 724 selfloop flow, removed 11 redundant places. [2023-11-17 15:03:53,124 INFO L231 Difference]: Finished difference. Result has 190 places, 203 transitions, 3614 flow [2023-11-17 15:03:53,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=2074, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3614, PETRI_PLACES=190, PETRI_TRANSITIONS=203} [2023-11-17 15:03:53,125 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 172 predicate places. [2023-11-17 15:03:53,125 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 203 transitions, 3614 flow [2023-11-17 15:03:53,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 54.72222222222222) internal successors, (985), 18 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:53,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:53,126 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:53,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 15:03:53,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-17 15:03:53,331 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:53,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:53,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1737774541, now seen corresponding path program 8 times [2023-11-17 15:03:53,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:53,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096505345] [2023-11-17 15:03:53,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:53,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:53,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:53,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096505345] [2023-11-17 15:03:53,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096505345] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:53,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641035773] [2023-11-17 15:03:53,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:03:53,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:53,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:53,587 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:53,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 15:03:53,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:03:53,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:03:53,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 15:03:53,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:53,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:03:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:53,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641035773] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:03:53,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:03:53,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2023-11-17 15:03:53,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217938516] [2023-11-17 15:03:53,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:03:53,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-17 15:03:53,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:53,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-17 15:03:53,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2023-11-17 15:03:53,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:53,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 203 transitions, 3614 flow. Second operand has 30 states, 30 states have (on average 54.36666666666667) internal successors, (1631), 30 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:53,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:53,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:53,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:55,257 INFO L124 PetriNetUnfolderBase]: 946/1695 cut-off events. [2023-11-17 15:03:55,257 INFO L125 PetriNetUnfolderBase]: For 130468/130468 co-relation queries the response was YES. [2023-11-17 15:03:55,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17208 conditions, 1695 events. 946/1695 cut-off events. For 130468/130468 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8089 event pairs, 18 based on Foata normal form. 52/1747 useless extension candidates. Maximal degree in co-relation 17120. Up to 577 conditions per place. [2023-11-17 15:03:55,282 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 90 selfloop transitions, 223 changer transitions 98/411 dead transitions. [2023-11-17 15:03:55,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 411 transitions, 9145 flow [2023-11-17 15:03:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-17 15:03:55,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-11-17 15:03:55,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 3014 transitions. [2023-11-17 15:03:55,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4424544920728127 [2023-11-17 15:03:55,287 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 3014 transitions. [2023-11-17 15:03:55,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 3014 transitions. [2023-11-17 15:03:55,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:55,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 3014 transitions. [2023-11-17 15:03:55,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 57.96153846153846) internal successors, (3014), 52 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:55,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 131.0) internal successors, (6943), 53 states have internal predecessors, (6943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:55,307 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 131.0) internal successors, (6943), 53 states have internal predecessors, (6943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:55,307 INFO L175 Difference]: Start difference. First operand has 190 places, 203 transitions, 3614 flow. Second operand 52 states and 3014 transitions. [2023-11-17 15:03:55,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 411 transitions, 9145 flow [2023-11-17 15:03:55,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 411 transitions, 8222 flow, removed 432 selfloop flow, removed 8 redundant places. [2023-11-17 15:03:55,471 INFO L231 Difference]: Finished difference. Result has 259 places, 249 transitions, 5301 flow [2023-11-17 15:03:55,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=3019, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=5301, PETRI_PLACES=259, PETRI_TRANSITIONS=249} [2023-11-17 15:03:55,472 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 241 predicate places. [2023-11-17 15:03:55,472 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 249 transitions, 5301 flow [2023-11-17 15:03:55,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 54.36666666666667) internal successors, (1631), 30 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:55,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:55,473 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:55,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 15:03:55,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:55,680 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:55,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:55,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1210806945, now seen corresponding path program 9 times [2023-11-17 15:03:55,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:55,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118986345] [2023-11-17 15:03:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:55,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:56,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:56,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118986345] [2023-11-17 15:03:56,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118986345] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:56,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102651508] [2023-11-17 15:03:56,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:03:56,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:56,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:56,198 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:56,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 15:03:56,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-17 15:03:56,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:03:56,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 15:03:56,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:56,398 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:56,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:03:56,957 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:56,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102651508] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:03:56,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:03:56,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 44 [2023-11-17 15:03:56,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076206791] [2023-11-17 15:03:56,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:03:56,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-17 15:03:56,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:56,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-17 15:03:56,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=1579, Unknown=0, NotChecked=0, Total=2070 [2023-11-17 15:03:56,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:56,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 249 transitions, 5301 flow. Second operand has 46 states, 46 states have (on average 54.23913043478261) internal successors, (2495), 46 states have internal predecessors, (2495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:56,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:56,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:56,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:58,524 INFO L124 PetriNetUnfolderBase]: 1314/2431 cut-off events. [2023-11-17 15:03:58,524 INFO L125 PetriNetUnfolderBase]: For 356125/356125 co-relation queries the response was YES. [2023-11-17 15:03:58,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33076 conditions, 2431 events. 1314/2431 cut-off events. For 356125/356125 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 12298 event pairs, 236 based on Foata normal form. 80/2511 useless extension candidates. Maximal degree in co-relation 32962. Up to 993 conditions per place. [2023-11-17 15:03:58,638 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 215 selfloop transitions, 182 changer transitions 93/490 dead transitions. [2023-11-17 15:03:58,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 490 transitions, 14504 flow [2023-11-17 15:03:58,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-17 15:03:58,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-11-17 15:03:58,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 2826 transitions. [2023-11-17 15:03:58,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44025549150958093 [2023-11-17 15:03:58,642 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 2826 transitions. [2023-11-17 15:03:58,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 2826 transitions. [2023-11-17 15:03:58,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:58,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 2826 transitions. [2023-11-17 15:03:58,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 57.673469387755105) internal successors, (2826), 49 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:58,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 131.0) internal successors, (6550), 50 states have internal predecessors, (6550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:58,656 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 131.0) internal successors, (6550), 50 states have internal predecessors, (6550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:58,656 INFO L175 Difference]: Start difference. First operand has 259 places, 249 transitions, 5301 flow. Second operand 49 states and 2826 transitions. [2023-11-17 15:03:58,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 490 transitions, 14504 flow [2023-11-17 15:03:59,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 490 transitions, 11131 flow, removed 1608 selfloop flow, removed 16 redundant places. [2023-11-17 15:03:59,463 INFO L231 Difference]: Finished difference. Result has 313 places, 343 transitions, 7245 flow [2023-11-17 15:03:59,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=3854, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7245, PETRI_PLACES=313, PETRI_TRANSITIONS=343} [2023-11-17 15:03:59,464 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 295 predicate places. [2023-11-17 15:03:59,464 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 343 transitions, 7245 flow [2023-11-17 15:03:59,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 54.23913043478261) internal successors, (2495), 46 states have internal predecessors, (2495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:59,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:59,465 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:59,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 15:03:59,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:59,670 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:59,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:59,671 INFO L85 PathProgramCache]: Analyzing trace with hash 564547085, now seen corresponding path program 10 times [2023-11-17 15:03:59,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:59,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034769681] [2023-11-17 15:03:59,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:59,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:00,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:00,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034769681] [2023-11-17 15:04:00,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034769681] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:04:00,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251565731] [2023-11-17 15:04:00,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:04:00,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:00,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:00,075 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:04:00,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 15:04:00,144 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:04:00,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:04:00,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 15:04:00,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:04:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:00,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:04:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:00,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251565731] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:04:00,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:04:00,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-11-17 15:04:00,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690683380] [2023-11-17 15:04:00,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:04:00,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-17 15:04:00,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:00,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-17 15:04:00,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1965, Unknown=0, NotChecked=0, Total=2450 [2023-11-17 15:04:00,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:00,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 343 transitions, 7245 flow. Second operand has 50 states, 50 states have (on average 54.2) internal successors, (2710), 50 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:00,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:00,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:00,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:03,111 INFO L124 PetriNetUnfolderBase]: 1610/3023 cut-off events. [2023-11-17 15:04:03,111 INFO L125 PetriNetUnfolderBase]: For 781965/781965 co-relation queries the response was YES. [2023-11-17 15:04:03,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46398 conditions, 3023 events. 1610/3023 cut-off events. For 781965/781965 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 15733 event pairs, 78 based on Foata normal form. 80/3103 useless extension candidates. Maximal degree in co-relation 46261. Up to 1225 conditions per place. [2023-11-17 15:04:03,164 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 125 selfloop transitions, 351 changer transitions 109/585 dead transitions. [2023-11-17 15:04:03,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 585 transitions, 16859 flow [2023-11-17 15:04:03,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-17 15:04:03,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-11-17 15:04:03,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 3289 transitions. [2023-11-17 15:04:03,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4404714075264497 [2023-11-17 15:04:03,172 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 3289 transitions. [2023-11-17 15:04:03,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 3289 transitions. [2023-11-17 15:04:03,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:03,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 3289 transitions. [2023-11-17 15:04:03,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 57.70175438596491) internal successors, (3289), 57 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:03,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 131.0) internal successors, (7598), 58 states have internal predecessors, (7598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:03,257 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 131.0) internal successors, (7598), 58 states have internal predecessors, (7598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:03,258 INFO L175 Difference]: Start difference. First operand has 313 places, 343 transitions, 7245 flow. Second operand 57 states and 3289 transitions. [2023-11-17 15:04:03,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 585 transitions, 16859 flow [2023-11-17 15:04:04,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 585 transitions, 15047 flow, removed 861 selfloop flow, removed 19 redundant places. [2023-11-17 15:04:04,768 INFO L231 Difference]: Finished difference. Result has 372 places, 419 transitions, 9669 flow [2023-11-17 15:04:04,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=5717, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=9669, PETRI_PLACES=372, PETRI_TRANSITIONS=419} [2023-11-17 15:04:04,769 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 354 predicate places. [2023-11-17 15:04:04,769 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 419 transitions, 9669 flow [2023-11-17 15:04:04,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 54.2) internal successors, (2710), 50 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:04,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:04,770 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:04,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 15:04:04,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-17 15:04:04,976 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:04,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:04,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1427159271, now seen corresponding path program 11 times [2023-11-17 15:04:04,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:04,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814802796] [2023-11-17 15:04:04,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:04,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:05,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:05,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814802796] [2023-11-17 15:04:05,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814802796] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:04:05,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569639500] [2023-11-17 15:04:05,686 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:04:05,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:05,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:05,687 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:04:05,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 15:04:05,770 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-17 15:04:05,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:04:05,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 15:04:05,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:04:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:05,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:04:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:06,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569639500] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:04:06,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:04:06,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 49 [2023-11-17 15:04:06,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583772968] [2023-11-17 15:04:06,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:04:06,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-17 15:04:06,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:06,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-17 15:04:06,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=426, Invalid=2124, Unknown=0, NotChecked=0, Total=2550 [2023-11-17 15:04:06,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:06,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 419 transitions, 9669 flow. Second operand has 51 states, 51 states have (on average 54.23529411764706) internal successors, (2766), 51 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:06,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:06,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:06,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:09,240 INFO L124 PetriNetUnfolderBase]: 1958/3667 cut-off events. [2023-11-17 15:04:09,241 INFO L125 PetriNetUnfolderBase]: For 1433109/1433109 co-relation queries the response was YES. [2023-11-17 15:04:09,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66591 conditions, 3667 events. 1958/3667 cut-off events. For 1433109/1433109 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 19524 event pairs, 22 based on Foata normal form. 84/3751 useless extension candidates. Maximal degree in co-relation 66442. Up to 1513 conditions per place. [2023-11-17 15:04:09,293 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 106 selfloop transitions, 478 changer transitions 137/721 dead transitions. [2023-11-17 15:04:09,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 721 transitions, 23907 flow [2023-11-17 15:04:09,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-11-17 15:04:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-11-17 15:04:09,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 4163 transitions. [2023-11-17 15:04:09,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44136980491942324 [2023-11-17 15:04:09,298 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 4163 transitions. [2023-11-17 15:04:09,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 4163 transitions. [2023-11-17 15:04:09,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:09,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 4163 transitions. [2023-11-17 15:04:09,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 57.81944444444444) internal successors, (4163), 72 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:09,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 131.0) internal successors, (9563), 73 states have internal predecessors, (9563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:09,317 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 131.0) internal successors, (9563), 73 states have internal predecessors, (9563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:09,317 INFO L175 Difference]: Start difference. First operand has 372 places, 419 transitions, 9669 flow. Second operand 72 states and 4163 transitions. [2023-11-17 15:04:09,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 721 transitions, 23907 flow [2023-11-17 15:04:12,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 721 transitions, 20912 flow, removed 1397 selfloop flow, removed 17 redundant places. [2023-11-17 15:04:12,317 INFO L231 Difference]: Finished difference. Result has 452 places, 508 transitions, 12896 flow [2023-11-17 15:04:12,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=7456, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=390, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=12896, PETRI_PLACES=452, PETRI_TRANSITIONS=508} [2023-11-17 15:04:12,318 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 434 predicate places. [2023-11-17 15:04:12,318 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 508 transitions, 12896 flow [2023-11-17 15:04:12,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 54.23529411764706) internal successors, (2766), 51 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:12,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:12,319 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:12,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-17 15:04:12,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-17 15:04:12,525 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:12,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:12,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1191605421, now seen corresponding path program 12 times [2023-11-17 15:04:12,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:12,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976947558] [2023-11-17 15:04:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:12,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:13,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:13,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976947558] [2023-11-17 15:04:13,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976947558] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:04:13,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740028231] [2023-11-17 15:04:13,019 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:04:13,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:13,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:13,021 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:04:13,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 15:04:13,129 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-11-17 15:04:13,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:04:13,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-17 15:04:13,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:04:13,186 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:13,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:04:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:13,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740028231] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:04:13,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:04:13,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 48 [2023-11-17 15:04:13,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9557256] [2023-11-17 15:04:13,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:04:13,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-17 15:04:13,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:13,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-17 15:04:13,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=1871, Unknown=0, NotChecked=0, Total=2450 [2023-11-17 15:04:13,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:04:13,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 508 transitions, 12896 flow. Second operand has 50 states, 50 states have (on average 54.24) internal successors, (2712), 50 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:13,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:13,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:04:13,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:17,937 INFO L124 PetriNetUnfolderBase]: 2494/4663 cut-off events. [2023-11-17 15:04:17,941 INFO L125 PetriNetUnfolderBase]: For 2624889/2624889 co-relation queries the response was YES. [2023-11-17 15:04:17,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105580 conditions, 4663 events. 2494/4663 cut-off events. For 2624889/2624889 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 25197 event pairs, 22 based on Foata normal form. 80/4743 useless extension candidates. Maximal degree in co-relation 105404. Up to 1961 conditions per place. [2023-11-17 15:04:18,010 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 140 selfloop transitions, 610 changer transitions 176/926 dead transitions. [2023-11-17 15:04:18,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 926 transitions, 39691 flow [2023-11-17 15:04:18,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-11-17 15:04:18,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2023-11-17 15:04:18,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 5263 transitions. [2023-11-17 15:04:18,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44148980790202164 [2023-11-17 15:04:18,020 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 5263 transitions. [2023-11-17 15:04:18,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 5263 transitions. [2023-11-17 15:04:18,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:18,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 5263 transitions. [2023-11-17 15:04:18,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 92 states, 91 states have (on average 57.83516483516483) internal successors, (5263), 91 states have internal predecessors, (5263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:18,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 92 states, 92 states have (on average 131.0) internal successors, (12052), 92 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:18,049 INFO L81 ComplementDD]: Finished complementDD. Result has 92 states, 92 states have (on average 131.0) internal successors, (12052), 92 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:18,049 INFO L175 Difference]: Start difference. First operand has 452 places, 508 transitions, 12896 flow. Second operand 91 states and 5263 transitions. [2023-11-17 15:04:18,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 926 transitions, 39691 flow [2023-11-17 15:04:22,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 926 transitions, 31367 flow, removed 3928 selfloop flow, removed 28 redundant places. [2023-11-17 15:04:22,804 INFO L231 Difference]: Finished difference. Result has 553 places, 642 transitions, 18419 flow [2023-11-17 15:04:22,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=9294, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=477, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=91, PETRI_FLOW=18419, PETRI_PLACES=553, PETRI_TRANSITIONS=642} [2023-11-17 15:04:22,805 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 535 predicate places. [2023-11-17 15:04:22,805 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 642 transitions, 18419 flow [2023-11-17 15:04:22,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 54.24) internal successors, (2712), 50 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:22,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:22,806 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:22,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 15:04:23,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-17 15:04:23,012 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:04:23,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:23,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1822828787, now seen corresponding path program 13 times [2023-11-17 15:04:23,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:23,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791026640] [2023-11-17 15:04:23,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:23,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:23,456 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 380 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:23,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:23,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791026640] [2023-11-17 15:04:23,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791026640] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:04:23,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857278105] [2023-11-17 15:04:23,457 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:04:23,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:04:23,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:23,461 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:04:23,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-17 15:04:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:23,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-17 15:04:23,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:04:23,637 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:23,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:04:23,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857278105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:04:23,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:04:23,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2023-11-17 15:04:23,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517809484] [2023-11-17 15:04:23,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:04:23,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 15:04:23,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:23,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 15:04:23,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2023-11-17 15:04:23,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 131 [2023-11-17 15:04:23,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 642 transitions, 18419 flow. Second operand has 23 states, 23 states have (on average 59.130434782608695) internal successors, (1360), 23 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:23,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:23,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 131 [2023-11-17 15:04:23,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:43,686 INFO L124 PetriNetUnfolderBase]: 25725/39149 cut-off events. [2023-11-17 15:04:43,686 INFO L125 PetriNetUnfolderBase]: For 32742404/32742404 co-relation queries the response was YES. [2023-11-17 15:04:44,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945402 conditions, 39149 events. 25725/39149 cut-off events. For 32742404/32742404 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 246322 event pairs, 257 based on Foata normal form. 1046/40195 useless extension candidates. Maximal degree in co-relation 945187. Up to 15523 conditions per place. [2023-11-17 15:04:44,773 INFO L140 encePairwiseOnDemand]: 128/131 looper letters, 0 selfloop transitions, 0 changer transitions 7687/7687 dead transitions. [2023-11-17 15:04:44,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 7687 transitions, 196253 flow [2023-11-17 15:04:44,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 15:04:44,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 15:04:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1488 transitions. [2023-11-17 15:04:44,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4938599402588782 [2023-11-17 15:04:44,778 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1488 transitions. [2023-11-17 15:04:44,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1488 transitions. [2023-11-17 15:04:44,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:44,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1488 transitions. [2023-11-17 15:04:44,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 64.69565217391305) internal successors, (1488), 23 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:44,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 131.0) internal successors, (3144), 24 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:44,783 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 131.0) internal successors, (3144), 24 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:44,783 INFO L175 Difference]: Start difference. First operand has 553 places, 642 transitions, 18419 flow. Second operand 23 states and 1488 transitions. [2023-11-17 15:04:44,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 7687 transitions, 196253 flow [2023-11-17 15:06:10,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 7687 transitions, 155908 flow, removed 13479 selfloop flow, removed 58 redundant places. [2023-11-17 15:06:10,153 INFO L231 Difference]: Finished difference. Result has 515 places, 0 transitions, 0 flow [2023-11-17 15:06:10,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=11644, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=515, PETRI_TRANSITIONS=0} [2023-11-17 15:06:10,154 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 497 predicate places. [2023-11-17 15:06:10,154 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 0 transitions, 0 flow [2023-11-17 15:06:10,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.130434782608695) internal successors, (1360), 23 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:06:10,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 15:06:10,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 15:06:10,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 15:06:10,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-17 15:06:10,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-17 15:06:10,361 INFO L445 BasicCegarLoop]: Path program histogram: [13, 2, 1, 1] [2023-11-17 15:06:10,364 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:06:10,364 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:06:10,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:06:10 BasicIcfg [2023-11-17 15:06:10,366 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:06:10,367 INFO L158 Benchmark]: Toolchain (without parser) took 147321.91ms. Allocated memory was 195.0MB in the beginning and 5.9GB in the end (delta: 5.7GB). Free memory was 137.9MB in the beginning and 3.9GB in the end (delta: -3.7GB). Peak memory consumption was 4.9GB. Max. memory is 8.0GB. [2023-11-17 15:06:10,367 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 195.0MB. Free memory is still 142.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:06:10,367 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.60ms. Allocated memory is still 195.0MB. Free memory was 137.8MB in the beginning and 118.3MB in the end (delta: 19.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 15:06:10,367 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.00ms. Allocated memory is still 195.0MB. Free memory was 118.0MB in the beginning and 116.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:06:10,367 INFO L158 Benchmark]: Boogie Preprocessor took 40.70ms. Allocated memory is still 195.0MB. Free memory was 116.3MB in the beginning and 114.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 15:06:10,368 INFO L158 Benchmark]: RCFGBuilder took 304.69ms. Allocated memory is still 195.0MB. Free memory was 114.7MB in the beginning and 102.3MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-11-17 15:06:10,368 INFO L158 Benchmark]: TraceAbstraction took 146468.82ms. Allocated memory was 195.0MB in the beginning and 5.9GB in the end (delta: 5.7GB). Free memory was 101.7MB in the beginning and 3.9GB in the end (delta: -3.8GB). Peak memory consumption was 4.9GB. Max. memory is 8.0GB. [2023-11-17 15:06:10,369 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 195.0MB. Free memory is still 142.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 452.60ms. Allocated memory is still 195.0MB. Free memory was 137.8MB in the beginning and 118.3MB in the end (delta: 19.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.00ms. Allocated memory is still 195.0MB. Free memory was 118.0MB in the beginning and 116.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.70ms. Allocated memory is still 195.0MB. Free memory was 116.3MB in the beginning and 114.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 304.69ms. Allocated memory is still 195.0MB. Free memory was 114.7MB in the beginning and 102.3MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 146468.82ms. Allocated memory was 195.0MB in the beginning and 5.9GB in the end (delta: 5.7GB). Free memory was 101.7MB in the beginning and 3.9GB in the end (delta: -3.8GB). Peak memory consumption was 4.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 69 PlacesBefore, 18 PlacesAfterwards, 67 TransitionsBefore, 14 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 1192 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1045, independent: 1015, independent conditional: 0, independent unconditional: 1015, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 870, independent: 855, independent conditional: 0, independent unconditional: 855, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 870, independent: 855, independent conditional: 0, independent unconditional: 855, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 41, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1045, independent: 160, independent conditional: 0, independent unconditional: 160, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 870, unknown conditional: 0, unknown unconditional: 870] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 722]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 89 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 146.3s, OverallIterations: 17, TraceHistogramMax: 21, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 132.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5392 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5392 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 453 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3902 IncrementalHoareTripleChecker+Invalid, 4355 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 453 mSolverCounterUnsat, 0 mSDtfsCounter, 3902 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1038 GetRequests, 305 SyntacticMatches, 7 SemanticMatches, 726 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18432 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18419occurred in iteration=16, InterpolantAutomatonStates: 490, 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, 0.5s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 570 NumberOfCodeBlocks, 570 NumberOfCodeBlocksAsserted, 70 NumberOfCheckSat, 743 ConstructedInterpolants, 0 QuantifiedInterpolants, 3198 SizeOfPredicates, 127 NumberOfNonLiveVariables, 2004 ConjunctsInSsa, 210 ConjunctsInUnsatCore, 38 InterpolantComputations, 7 PerfectInterpolantSequences, 792/2405 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 15:06:10,382 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...