/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:21:03,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:21:03,723 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 12:21:03,747 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:21:03,747 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:21:03,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:21:03,748 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:21:03,748 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:21:03,749 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:21:03,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:21:03,752 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:21:03,752 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:21:03,752 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:21:03,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:21:03,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:21:03,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:21:03,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:21:03,753 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:21:03,754 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:21:03,754 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:21:03,754 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:21:03,754 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:21:03,755 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:21:03,755 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:21:03,755 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:21:03,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:21:03,755 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:21:03,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:21:03,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:21:03,756 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:21:03,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:21:03,757 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:21:03,757 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:21:03,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:21:03,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:21:03,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:21:03,957 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:21:03,958 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:21:03,958 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2023-11-17 12:21:05,009 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:21:05,171 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:21:05,172 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2023-11-17 12:21:05,177 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e24c26cf5/5faaad6b53c940e782854b0b1b8454be/FLAGc0f4654af [2023-11-17 12:21:05,188 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e24c26cf5/5faaad6b53c940e782854b0b1b8454be [2023-11-17 12:21:05,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:21:05,190 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:21:05,191 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:21:05,191 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:21:05,194 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:21:05,195 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:21:05" (1/1) ... [2023-11-17 12:21:05,195 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a6bbb48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:05, skipping insertion in model container [2023-11-17 12:21:05,196 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:21:05" (1/1) ... [2023-11-17 12:21:05,225 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:21:05,382 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c[4403,4416] [2023-11-17 12:21:05,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:21:05,401 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:21:05,437 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c[4403,4416] [2023-11-17 12:21:05,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:21:05,446 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:21:05,446 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:21:05,451 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:21:05,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:05 WrapperNode [2023-11-17 12:21:05,451 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:21:05,452 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:21:05,452 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:21:05,452 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:21:05,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:05" (1/1) ... [2023-11-17 12:21:05,473 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:05" (1/1) ... [2023-11-17 12:21:05,501 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 364 [2023-11-17 12:21:05,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:21:05,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:21:05,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:21:05,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:21:05,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:05" (1/1) ... [2023-11-17 12:21:05,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:05" (1/1) ... [2023-11-17 12:21:05,522 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:05" (1/1) ... [2023-11-17 12:21:05,523 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:05" (1/1) ... [2023-11-17 12:21:05,529 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:05" (1/1) ... [2023-11-17 12:21:05,532 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:05" (1/1) ... [2023-11-17 12:21:05,545 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:05" (1/1) ... [2023-11-17 12:21:05,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:05" (1/1) ... [2023-11-17 12:21:05,549 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:21:05,549 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:21:05,549 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:21:05,549 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:21:05,550 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:05" (1/1) ... [2023-11-17 12:21:05,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:21:05,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:21:05,582 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 12:21:05,625 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 12:21:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:21:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:21:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:21:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:21:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:21:05,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:21:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:21:05,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:21:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:21:05,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:21:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 12:21:05,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 12:21:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:21:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:21:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:21:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 12:21:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:21:05,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:21:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:21:05,645 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 12:21:05,741 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:21:05,742 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:21:06,166 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:21:06,444 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:21:06,444 INFO L307 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-17 12:21:06,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:21:06 BoogieIcfgContainer [2023-11-17 12:21:06,445 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:21:06,446 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:21:06,446 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:21:06,448 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:21:06,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:21:05" (1/3) ... [2023-11-17 12:21:06,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74954a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:21:06, skipping insertion in model container [2023-11-17 12:21:06,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:21:05" (2/3) ... [2023-11-17 12:21:06,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74954a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:21:06, skipping insertion in model container [2023-11-17 12:21:06,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:21:06" (3/3) ... [2023-11-17 12:21:06,450 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2023-11-17 12:21:06,462 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:21:06,462 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:21:06,462 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:21:06,501 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 12:21:06,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 55 transitions, 138 flow [2023-11-17 12:21:06,543 INFO L124 PetriNetUnfolderBase]: 7/51 cut-off events. [2023-11-17 12:21:06,543 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:21:06,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 51 events. 7/51 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-11-17 12:21:06,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 55 transitions, 138 flow [2023-11-17 12:21:06,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 50 transitions, 124 flow [2023-11-17 12:21:06,551 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:21:06,558 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 50 transitions, 124 flow [2023-11-17 12:21:06,560 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 50 transitions, 124 flow [2023-11-17 12:21:06,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 50 transitions, 124 flow [2023-11-17 12:21:06,572 INFO L124 PetriNetUnfolderBase]: 7/50 cut-off events. [2023-11-17 12:21:06,572 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:21:06,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 50 events. 7/50 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-11-17 12:21:06,573 INFO L119 LiptonReduction]: Number of co-enabled transitions 870 [2023-11-17 12:21:07,157 INFO L134 LiptonReduction]: Checked pairs total: 1095 [2023-11-17 12:21:07,157 INFO L136 LiptonReduction]: Total number of compositions: 11 [2023-11-17 12:21:07,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:21:07,194 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;@22543d0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:21:07,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 12:21:07,208 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:21:07,208 INFO L124 PetriNetUnfolderBase]: 7/38 cut-off events. [2023-11-17 12:21:07,208 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:21:07,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:07,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:07,209 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 12:21:07,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:07,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1866786395, now seen corresponding path program 1 times [2023-11-17 12:21:07,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:07,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417108344] [2023-11-17 12:21:07,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:07,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:07,536 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 12:21:07,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:07,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417108344] [2023-11-17 12:21:07,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417108344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:07,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:07,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 12:21:07,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569937660] [2023-11-17 12:21:07,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:07,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:21:07,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:07,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:21:07,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:21:07,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2023-11-17 12:21:07,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:07,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:07,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2023-11-17 12:21:07,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:08,001 INFO L124 PetriNetUnfolderBase]: 3412/4673 cut-off events. [2023-11-17 12:21:08,001 INFO L125 PetriNetUnfolderBase]: For 319/319 co-relation queries the response was YES. [2023-11-17 12:21:08,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9335 conditions, 4673 events. 3412/4673 cut-off events. For 319/319 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 19323 event pairs, 1113 based on Foata normal form. 1/3557 useless extension candidates. Maximal degree in co-relation 7592. Up to 2477 conditions per place. [2023-11-17 12:21:08,027 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 57 selfloop transitions, 3 changer transitions 1/63 dead transitions. [2023-11-17 12:21:08,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 287 flow [2023-11-17 12:21:08,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:21:08,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:21:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2023-11-17 12:21:08,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6313131313131313 [2023-11-17 12:21:08,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2023-11-17 12:21:08,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2023-11-17 12:21:08,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:08,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2023-11-17 12:21:08,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:08,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:08,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:08,050 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 102 flow. Second operand 3 states and 125 transitions. [2023-11-17 12:21:08,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 287 flow [2023-11-17 12:21:08,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 63 transitions, 261 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-17 12:21:08,059 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 105 flow [2023-11-17 12:21:08,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2023-11-17 12:21:08,063 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -5 predicate places. [2023-11-17 12:21:08,064 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 105 flow [2023-11-17 12:21:08,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:08,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:08,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:08,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:21:08,065 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 12:21:08,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:08,065 INFO L85 PathProgramCache]: Analyzing trace with hash 173815438, now seen corresponding path program 1 times [2023-11-17 12:21:08,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:08,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440558157] [2023-11-17 12:21:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:08,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:21:08,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:08,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440558157] [2023-11-17 12:21:08,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440558157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:08,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:08,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 12:21:08,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119322045] [2023-11-17 12:21:08,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:08,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:21:08,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:08,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:21:08,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:21:08,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2023-11-17 12:21:08,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:08,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:08,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2023-11-17 12:21:08,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:08,711 INFO L124 PetriNetUnfolderBase]: 4906/6580 cut-off events. [2023-11-17 12:21:08,712 INFO L125 PetriNetUnfolderBase]: For 868/868 co-relation queries the response was YES. [2023-11-17 12:21:08,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14350 conditions, 6580 events. 4906/6580 cut-off events. For 868/868 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 28025 event pairs, 1647 based on Foata normal form. 194/6005 useless extension candidates. Maximal degree in co-relation 5993. Up to 4240 conditions per place. [2023-11-17 12:21:08,736 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 65 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-11-17 12:21:08,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 68 transitions, 307 flow [2023-11-17 12:21:08,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:21:08,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:21:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2023-11-17 12:21:08,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-17 12:21:08,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2023-11-17 12:21:08,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2023-11-17 12:21:08,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:08,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2023-11-17 12:21:08,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:08,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:08,740 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:08,740 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 105 flow. Second operand 3 states and 122 transitions. [2023-11-17 12:21:08,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 68 transitions, 307 flow [2023-11-17 12:21:08,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 68 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:21:08,741 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 116 flow [2023-11-17 12:21:08,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2023-11-17 12:21:08,742 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2023-11-17 12:21:08,742 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 116 flow [2023-11-17 12:21:08,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:08,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:08,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:08,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:21:08,743 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 12:21:08,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:08,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1719802406, now seen corresponding path program 1 times [2023-11-17 12:21:08,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:08,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556732075] [2023-11-17 12:21:08,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:08,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:21:08,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:08,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556732075] [2023-11-17 12:21:08,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556732075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:08,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:08,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 12:21:08,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353229871] [2023-11-17 12:21:08,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:08,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:21:08,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:08,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:21:08,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:21:08,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2023-11-17 12:21:08,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:08,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:08,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2023-11-17 12:21:08,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:09,361 INFO L124 PetriNetUnfolderBase]: 6187/8361 cut-off events. [2023-11-17 12:21:09,362 INFO L125 PetriNetUnfolderBase]: For 2368/2368 co-relation queries the response was YES. [2023-11-17 12:21:09,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18913 conditions, 8361 events. 6187/8361 cut-off events. For 2368/2368 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 37195 event pairs, 2103 based on Foata normal form. 214/7896 useless extension candidates. Maximal degree in co-relation 11738. Up to 5450 conditions per place. [2023-11-17 12:21:09,397 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 65 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-11-17 12:21:09,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 323 flow [2023-11-17 12:21:09,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:21:09,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:21:09,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2023-11-17 12:21:09,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2023-11-17 12:21:09,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2023-11-17 12:21:09,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2023-11-17 12:21:09,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:09,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2023-11-17 12:21:09,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:09,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:09,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:09,404 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 116 flow. Second operand 3 states and 120 transitions. [2023-11-17 12:21:09,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 323 flow [2023-11-17 12:21:09,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 68 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:21:09,406 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 128 flow [2023-11-17 12:21:09,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-11-17 12:21:09,407 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -1 predicate places. [2023-11-17 12:21:09,407 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 128 flow [2023-11-17 12:21:09,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:09,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:09,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:09,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:21:09,408 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 12:21:09,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:09,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1367347462, now seen corresponding path program 1 times [2023-11-17 12:21:09,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:09,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297221737] [2023-11-17 12:21:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:09,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:09,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:21:09,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:09,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297221737] [2023-11-17 12:21:09,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297221737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:09,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:09,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:21:09,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652784741] [2023-11-17 12:21:09,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:09,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:21:09,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:09,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:21:09,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:21:09,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2023-11-17 12:21:09,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:09,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:09,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2023-11-17 12:21:09,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:10,220 INFO L124 PetriNetUnfolderBase]: 7678/10724 cut-off events. [2023-11-17 12:21:10,221 INFO L125 PetriNetUnfolderBase]: For 3969/3969 co-relation queries the response was YES. [2023-11-17 12:21:10,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24975 conditions, 10724 events. 7678/10724 cut-off events. For 3969/3969 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 51693 event pairs, 6276 based on Foata normal form. 194/10820 useless extension candidates. Maximal degree in co-relation 14471. Up to 7659 conditions per place. [2023-11-17 12:21:10,257 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 73 selfloop transitions, 7 changer transitions 0/82 dead transitions. [2023-11-17 12:21:10,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 82 transitions, 389 flow [2023-11-17 12:21:10,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:21:10,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:21:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2023-11-17 12:21:10,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2023-11-17 12:21:10,259 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 180 transitions. [2023-11-17 12:21:10,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 180 transitions. [2023-11-17 12:21:10,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:10,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 180 transitions. [2023-11-17 12:21:10,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:10,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:10,261 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:10,261 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 128 flow. Second operand 5 states and 180 transitions. [2023-11-17 12:21:10,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 82 transitions, 389 flow [2023-11-17 12:21:10,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 82 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:21:10,264 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 178 flow [2023-11-17 12:21:10,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2023-11-17 12:21:10,266 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2023-11-17 12:21:10,266 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 178 flow [2023-11-17 12:21:10,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:10,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:10,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:10,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 12:21:10,266 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 12:21:10,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:10,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1552923356, now seen corresponding path program 1 times [2023-11-17 12:21:10,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:10,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091856701] [2023-11-17 12:21:10,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:10,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:10,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:21:10,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:10,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091856701] [2023-11-17 12:21:10,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091856701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:10,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:10,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:21:10,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162263497] [2023-11-17 12:21:10,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:10,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:21:10,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:10,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:21:10,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:21:10,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2023-11-17 12:21:10,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:10,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:10,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2023-11-17 12:21:10,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:11,418 INFO L124 PetriNetUnfolderBase]: 10251/14550 cut-off events. [2023-11-17 12:21:11,418 INFO L125 PetriNetUnfolderBase]: For 5368/5368 co-relation queries the response was YES. [2023-11-17 12:21:11,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33163 conditions, 14550 events. 10251/14550 cut-off events. For 5368/5368 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 75398 event pairs, 8647 based on Foata normal form. 348/14825 useless extension candidates. Maximal degree in co-relation 25002. Up to 10318 conditions per place. [2023-11-17 12:21:11,461 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 75 selfloop transitions, 5 changer transitions 2/84 dead transitions. [2023-11-17 12:21:11,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 84 transitions, 452 flow [2023-11-17 12:21:11,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:21:11,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:21:11,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2023-11-17 12:21:11,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5795454545454546 [2023-11-17 12:21:11,462 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 153 transitions. [2023-11-17 12:21:11,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 153 transitions. [2023-11-17 12:21:11,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:11,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 153 transitions. [2023-11-17 12:21:11,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:11,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:11,463 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:11,464 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 178 flow. Second operand 4 states and 153 transitions. [2023-11-17 12:21:11,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 84 transitions, 452 flow [2023-11-17 12:21:11,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 84 transitions, 448 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 12:21:11,466 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 204 flow [2023-11-17 12:21:11,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-11-17 12:21:11,466 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2023-11-17 12:21:11,467 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 204 flow [2023-11-17 12:21:11,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:11,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:11,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:11,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 12:21:11,467 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 12:21:11,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:11,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1158197068, now seen corresponding path program 1 times [2023-11-17 12:21:11,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:11,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379478247] [2023-11-17 12:21:11,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:11,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:21:11,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:11,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379478247] [2023-11-17 12:21:11,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379478247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:11,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:11,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:21:11,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486134606] [2023-11-17 12:21:11,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:11,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:21:11,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:11,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:21:11,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:21:11,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 66 [2023-11-17 12:21:11,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:11,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:11,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 66 [2023-11-17 12:21:11,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:13,427 INFO L124 PetriNetUnfolderBase]: 19079/26560 cut-off events. [2023-11-17 12:21:13,428 INFO L125 PetriNetUnfolderBase]: For 8296/8296 co-relation queries the response was YES. [2023-11-17 12:21:13,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60551 conditions, 26560 events. 19079/26560 cut-off events. For 8296/8296 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 148121 event pairs, 7784 based on Foata normal form. 378/26930 useless extension candidates. Maximal degree in co-relation 46530. Up to 10405 conditions per place. [2023-11-17 12:21:13,542 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 122 selfloop transitions, 9 changer transitions 1/132 dead transitions. [2023-11-17 12:21:13,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 132 transitions, 705 flow [2023-11-17 12:21:13,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:21:13,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:21:13,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2023-11-17 12:21:13,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-11-17 12:21:13,543 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2023-11-17 12:21:13,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2023-11-17 12:21:13,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:13,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2023-11-17 12:21:13,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:13,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:13,545 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:13,545 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 204 flow. Second operand 6 states and 187 transitions. [2023-11-17 12:21:13,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 132 transitions, 705 flow [2023-11-17 12:21:13,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 132 transitions, 695 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 12:21:13,553 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 244 flow [2023-11-17 12:21:13,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2023-11-17 12:21:13,554 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 17 predicate places. [2023-11-17 12:21:13,554 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 244 flow [2023-11-17 12:21:13,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:13,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:13,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:13,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 12:21:13,555 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 12:21:13,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:13,555 INFO L85 PathProgramCache]: Analyzing trace with hash 671582440, now seen corresponding path program 1 times [2023-11-17 12:21:13,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:13,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863528231] [2023-11-17 12:21:13,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:13,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:21:13,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:13,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863528231] [2023-11-17 12:21:13,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863528231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:13,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:13,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:21:13,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8937531] [2023-11-17 12:21:13,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:13,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:21:13,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:13,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:21:13,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:21:13,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 66 [2023-11-17 12:21:13,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:13,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:13,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 66 [2023-11-17 12:21:13,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:15,364 INFO L124 PetriNetUnfolderBase]: 16257/22420 cut-off events. [2023-11-17 12:21:15,364 INFO L125 PetriNetUnfolderBase]: For 10532/10532 co-relation queries the response was YES. [2023-11-17 12:21:15,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54934 conditions, 22420 events. 16257/22420 cut-off events. For 10532/10532 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 118093 event pairs, 7380 based on Foata normal form. 160/22576 useless extension candidates. Maximal degree in co-relation 43967. Up to 11253 conditions per place. [2023-11-17 12:21:15,462 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 78 selfloop transitions, 7 changer transitions 37/122 dead transitions. [2023-11-17 12:21:15,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 122 transitions, 679 flow [2023-11-17 12:21:15,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:21:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:21:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2023-11-17 12:21:15,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-11-17 12:21:15,463 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 180 transitions. [2023-11-17 12:21:15,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 180 transitions. [2023-11-17 12:21:15,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:15,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 180 transitions. [2023-11-17 12:21:15,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:15,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:15,464 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:15,464 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 244 flow. Second operand 6 states and 180 transitions. [2023-11-17 12:21:15,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 122 transitions, 679 flow [2023-11-17 12:21:15,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 122 transitions, 672 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 12:21:15,474 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 253 flow [2023-11-17 12:21:15,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=253, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2023-11-17 12:21:15,475 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2023-11-17 12:21:15,475 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 253 flow [2023-11-17 12:21:15,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:15,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:15,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:15,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 12:21:15,475 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 12:21:15,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:15,476 INFO L85 PathProgramCache]: Analyzing trace with hash 364619403, now seen corresponding path program 1 times [2023-11-17 12:21:15,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:15,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110881904] [2023-11-17 12:21:15,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:15,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:21:15,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:15,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110881904] [2023-11-17 12:21:15,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110881904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:15,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:15,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:21:15,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131577191] [2023-11-17 12:21:15,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:15,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:21:15,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:15,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:21:15,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:21:15,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 66 [2023-11-17 12:21:15,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:15,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:15,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 66 [2023-11-17 12:21:15,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:16,720 INFO L124 PetriNetUnfolderBase]: 11637/15782 cut-off events. [2023-11-17 12:21:16,720 INFO L125 PetriNetUnfolderBase]: For 9117/9117 co-relation queries the response was YES. [2023-11-17 12:21:16,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41778 conditions, 15782 events. 11637/15782 cut-off events. For 9117/9117 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 78311 event pairs, 1076 based on Foata normal form. 672/16450 useless extension candidates. Maximal degree in co-relation 36112. Up to 9276 conditions per place. [2023-11-17 12:21:16,798 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 86 selfloop transitions, 6 changer transitions 4/96 dead transitions. [2023-11-17 12:21:16,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 589 flow [2023-11-17 12:21:16,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:21:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:21:16,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2023-11-17 12:21:16,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2023-11-17 12:21:16,800 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 151 transitions. [2023-11-17 12:21:16,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 151 transitions. [2023-11-17 12:21:16,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:16,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 151 transitions. [2023-11-17 12:21:16,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:16,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:16,801 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:16,801 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 253 flow. Second operand 6 states and 151 transitions. [2023-11-17 12:21:16,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 589 flow [2023-11-17 12:21:16,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 96 transitions, 566 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-17 12:21:16,808 INFO L231 Difference]: Finished difference. Result has 65 places, 49 transitions, 218 flow [2023-11-17 12:21:16,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=65, PETRI_TRANSITIONS=49} [2023-11-17 12:21:16,809 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2023-11-17 12:21:16,809 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 49 transitions, 218 flow [2023-11-17 12:21:16,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:16,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:16,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:16,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 12:21:16,809 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 12:21:16,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:16,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1845414363, now seen corresponding path program 1 times [2023-11-17 12:21:16,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:16,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674697227] [2023-11-17 12:21:16,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:16,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:17,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:21:17,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:17,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674697227] [2023-11-17 12:21:17,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674697227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:17,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:17,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:21:17,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217122754] [2023-11-17 12:21:17,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:17,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:21:17,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:17,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:21:17,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:21:17,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 66 [2023-11-17 12:21:17,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 49 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:17,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:17,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 66 [2023-11-17 12:21:17,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:17,853 INFO L124 PetriNetUnfolderBase]: 8244/11031 cut-off events. [2023-11-17 12:21:17,853 INFO L125 PetriNetUnfolderBase]: For 7546/7546 co-relation queries the response was YES. [2023-11-17 12:21:17,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29825 conditions, 11031 events. 8244/11031 cut-off events. For 7546/7546 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 50389 event pairs, 978 based on Foata normal form. 576/11605 useless extension candidates. Maximal degree in co-relation 29792. Up to 5444 conditions per place. [2023-11-17 12:21:17,898 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 86 selfloop transitions, 5 changer transitions 1/92 dead transitions. [2023-11-17 12:21:17,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 92 transitions, 554 flow [2023-11-17 12:21:17,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:21:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:21:17,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2023-11-17 12:21:17,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2023-11-17 12:21:17,899 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 151 transitions. [2023-11-17 12:21:17,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 151 transitions. [2023-11-17 12:21:17,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:17,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 151 transitions. [2023-11-17 12:21:17,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:17,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:17,900 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:17,901 INFO L175 Difference]: Start difference. First operand has 65 places, 49 transitions, 218 flow. Second operand 6 states and 151 transitions. [2023-11-17 12:21:17,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 92 transitions, 554 flow [2023-11-17 12:21:17,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 92 transitions, 521 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-17 12:21:17,904 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 198 flow [2023-11-17 12:21:17,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2023-11-17 12:21:17,905 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 18 predicate places. [2023-11-17 12:21:17,905 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 198 flow [2023-11-17 12:21:17,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:17,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:17,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:17,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 12:21:17,906 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 12:21:17,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:17,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1713237341, now seen corresponding path program 1 times [2023-11-17 12:21:17,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:17,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143858047] [2023-11-17 12:21:17,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:17,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:18,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 12:21:18,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:18,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143858047] [2023-11-17 12:21:18,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143858047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:18,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:18,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:21:18,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205108490] [2023-11-17 12:21:18,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:18,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:21:18,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:18,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:21:18,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:21:18,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 66 [2023-11-17 12:21:18,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:18,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:18,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 66 [2023-11-17 12:21:18,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:18,985 INFO L124 PetriNetUnfolderBase]: 7756/10246 cut-off events. [2023-11-17 12:21:18,986 INFO L125 PetriNetUnfolderBase]: For 7923/7923 co-relation queries the response was YES. [2023-11-17 12:21:19,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29139 conditions, 10246 events. 7756/10246 cut-off events. For 7923/7923 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 43386 event pairs, 1393 based on Foata normal form. 448/10693 useless extension candidates. Maximal degree in co-relation 29107. Up to 6100 conditions per place. [2023-11-17 12:21:19,034 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 103 selfloop transitions, 9 changer transitions 0/112 dead transitions. [2023-11-17 12:21:19,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 112 transitions, 664 flow [2023-11-17 12:21:19,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:21:19,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:21:19,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2023-11-17 12:21:19,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3874458874458874 [2023-11-17 12:21:19,036 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 179 transitions. [2023-11-17 12:21:19,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 179 transitions. [2023-11-17 12:21:19,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:19,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 179 transitions. [2023-11-17 12:21:19,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:19,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:19,038 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:19,038 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 198 flow. Second operand 7 states and 179 transitions. [2023-11-17 12:21:19,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 112 transitions, 664 flow [2023-11-17 12:21:19,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 112 transitions, 635 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-11-17 12:21:19,042 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 249 flow [2023-11-17 12:21:19,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=249, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-11-17 12:21:19,043 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 19 predicate places. [2023-11-17 12:21:19,043 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 249 flow [2023-11-17 12:21:19,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:19,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:19,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:19,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 12:21:19,044 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 12:21:19,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:19,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1121934001, now seen corresponding path program 2 times [2023-11-17 12:21:19,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:19,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85277814] [2023-11-17 12:21:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:19,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:21:19,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:19,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85277814] [2023-11-17 12:21:19,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85277814] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:21:19,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766448377] [2023-11-17 12:21:19,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:21:19,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:21:19,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:21:19,204 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 12:21:19,225 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 12:21:19,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:21:19,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:21:19,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 12:21:19,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:21:19,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:21:19,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 12:21:19,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766448377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:19,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 12:21:19,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-17 12:21:19,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984356775] [2023-11-17 12:21:19,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:19,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:21:19,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:19,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:21:19,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-17 12:21:19,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 66 [2023-11-17 12:21:19,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 249 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:19,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:19,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 66 [2023-11-17 12:21:19,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:20,729 INFO L124 PetriNetUnfolderBase]: 13138/17179 cut-off events. [2023-11-17 12:21:20,729 INFO L125 PetriNetUnfolderBase]: For 17426/17426 co-relation queries the response was YES. [2023-11-17 12:21:20,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53864 conditions, 17179 events. 13138/17179 cut-off events. For 17426/17426 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 77884 event pairs, 2351 based on Foata normal form. 300/17478 useless extension candidates. Maximal degree in co-relation 53832. Up to 5785 conditions per place. [2023-11-17 12:21:20,809 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 115 selfloop transitions, 18 changer transitions 0/134 dead transitions. [2023-11-17 12:21:20,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 134 transitions, 837 flow [2023-11-17 12:21:20,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:21:20,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:21:20,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2023-11-17 12:21:20,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328282828282829 [2023-11-17 12:21:20,811 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 211 transitions. [2023-11-17 12:21:20,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 211 transitions. [2023-11-17 12:21:20,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:20,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 211 transitions. [2023-11-17 12:21:20,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 35.166666666666664) internal successors, (211), 6 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:20,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:20,812 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:20,812 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 249 flow. Second operand 6 states and 211 transitions. [2023-11-17 12:21:20,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 134 transitions, 837 flow [2023-11-17 12:21:20,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 134 transitions, 823 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-17 12:21:20,827 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 403 flow [2023-11-17 12:21:20,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2023-11-17 12:21:20,827 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 25 predicate places. [2023-11-17 12:21:20,827 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 403 flow [2023-11-17 12:21:20,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:20,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:20,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:20,845 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 12:21:21,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-17 12:21:21,034 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 12:21:21,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:21,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1331311927, now seen corresponding path program 1 times [2023-11-17 12:21:21,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:21,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241947137] [2023-11-17 12:21:21,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:21,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:21:21,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:21,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241947137] [2023-11-17 12:21:21,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241947137] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:21:21,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387156222] [2023-11-17 12:21:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:21,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:21:21,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:21:21,197 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 12:21:21,200 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 12:21:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:21,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 12:21:21,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:21:21,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:21:21,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 12:21:21,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387156222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:21,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 12:21:21,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-17 12:21:21,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716992644] [2023-11-17 12:21:21,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:21,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:21:21,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:21,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:21:21,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-17 12:21:21,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 66 [2023-11-17 12:21:21,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 403 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:21,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:21,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 66 [2023-11-17 12:21:21,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:23,679 INFO L124 PetriNetUnfolderBase]: 23476/31417 cut-off events. [2023-11-17 12:21:23,680 INFO L125 PetriNetUnfolderBase]: For 74768/75164 co-relation queries the response was YES. [2023-11-17 12:21:23,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110975 conditions, 31417 events. 23476/31417 cut-off events. For 74768/75164 co-relation queries the response was YES. Maximal size of possible extension queue 1032. Compared 169886 event pairs, 4153 based on Foata normal form. 892/32186 useless extension candidates. Maximal degree in co-relation 110939. Up to 11221 conditions per place. [2023-11-17 12:21:23,882 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 163 selfloop transitions, 11 changer transitions 0/180 dead transitions. [2023-11-17 12:21:23,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 180 transitions, 1500 flow [2023-11-17 12:21:23,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:21:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:21:23,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2023-11-17 12:21:23,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2023-11-17 12:21:23,883 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 213 transitions. [2023-11-17 12:21:23,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 213 transitions. [2023-11-17 12:21:23,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:23,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 213 transitions. [2023-11-17 12:21:23,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:23,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:23,884 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:23,885 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 403 flow. Second operand 6 states and 213 transitions. [2023-11-17 12:21:23,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 180 transitions, 1500 flow [2023-11-17 12:21:23,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 180 transitions, 1491 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-17 12:21:23,975 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 489 flow [2023-11-17 12:21:23,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=489, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2023-11-17 12:21:23,976 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2023-11-17 12:21:23,976 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 489 flow [2023-11-17 12:21:23,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:23,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:23,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:23,983 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 12:21:24,181 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,SelfDestructingSolverStorable11 [2023-11-17 12:21:24,181 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 12:21:24,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:24,182 INFO L85 PathProgramCache]: Analyzing trace with hash -768008237, now seen corresponding path program 2 times [2023-11-17 12:21:24,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:24,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841904504] [2023-11-17 12:21:24,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:24,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 12:21:24,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:24,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841904504] [2023-11-17 12:21:24,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841904504] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:21:24,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593208410] [2023-11-17 12:21:24,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:21:24,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:21:24,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:21:24,399 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 12:21:24,414 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 12:21:24,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:21:24,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:21:24,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 12:21:24,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:21:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 12:21:24,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:21:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:21:24,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593208410] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:21:24,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:21:24,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 13 [2023-11-17 12:21:24,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013714990] [2023-11-17 12:21:24,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:21:24,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 12:21:24,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:24,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 12:21:24,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-11-17 12:21:24,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 66 [2023-11-17 12:21:24,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 489 flow. Second operand has 14 states, 14 states have (on average 16.5) internal successors, (231), 14 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:24,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:24,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 66 [2023-11-17 12:21:24,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:29,807 INFO L124 PetriNetUnfolderBase]: 36893/48550 cut-off events. [2023-11-17 12:21:29,807 INFO L125 PetriNetUnfolderBase]: For 156698/156698 co-relation queries the response was YES. [2023-11-17 12:21:30,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198242 conditions, 48550 events. 36893/48550 cut-off events. For 156698/156698 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 252434 event pairs, 3112 based on Foata normal form. 1776/50325 useless extension candidates. Maximal degree in co-relation 198201. Up to 16343 conditions per place. [2023-11-17 12:21:30,177 INFO L140 encePairwiseOnDemand]: 54/66 looper letters, 294 selfloop transitions, 57 changer transitions 0/351 dead transitions. [2023-11-17 12:21:30,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 351 transitions, 3050 flow [2023-11-17 12:21:30,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 12:21:30,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 12:21:30,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 349 transitions. [2023-11-17 12:21:30,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3777056277056277 [2023-11-17 12:21:30,179 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 349 transitions. [2023-11-17 12:21:30,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 349 transitions. [2023-11-17 12:21:30,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:30,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 349 transitions. [2023-11-17 12:21:30,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 24.928571428571427) internal successors, (349), 14 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:30,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 66.0) internal successors, (990), 15 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:30,181 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 66.0) internal successors, (990), 15 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:30,181 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 489 flow. Second operand 14 states and 349 transitions. [2023-11-17 12:21:30,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 351 transitions, 3050 flow [2023-11-17 12:21:30,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 351 transitions, 3041 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-17 12:21:30,430 INFO L231 Difference]: Finished difference. Result has 99 places, 125 transitions, 1124 flow [2023-11-17 12:21:30,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1124, PETRI_PLACES=99, PETRI_TRANSITIONS=125} [2023-11-17 12:21:30,431 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 54 predicate places. [2023-11-17 12:21:30,431 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 125 transitions, 1124 flow [2023-11-17 12:21:30,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.5) internal successors, (231), 14 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:30,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:30,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:21:30,453 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 12:21:30,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:21:30,653 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 12:21:30,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:30,654 INFO L85 PathProgramCache]: Analyzing trace with hash 735342634, now seen corresponding path program 1 times [2023-11-17 12:21:30,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:30,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619291333] [2023-11-17 12:21:30,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:30,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:33,064 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 12:21:33,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:33,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619291333] [2023-11-17 12:21:33,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619291333] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:21:33,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143761138] [2023-11-17 12:21:33,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:33,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:21:33,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:21:33,078 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 12:21:33,083 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 12:21:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:33,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-17 12:21:33,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:21:33,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 438 treesize of output 430 [2023-11-17 12:21:33,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:21:33,960 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 12:21:33,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2023-11-17 12:21:34,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:21:34,042 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 12:21:34,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2023-11-17 12:21:34,325 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-11-17 12:21:34,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 30 [2023-11-17 12:21:34,334 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 12:21:34,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:21:34,875 INFO L349 Elim1Store]: treesize reduction 19, result has 92.5 percent of original size [2023-11-17 12:21:34,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 928 treesize of output 1017 [2023-11-17 12:21:34,944 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:21:34,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 780 treesize of output 676 [2023-11-17 12:21:35,005 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:21:35,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 588 treesize of output 580 [2023-11-17 12:24:35,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2023-11-17 12:24:35,816 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-17 12:24:35,817 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-17 12:24:35,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-17 12:24:36,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:24:36,026 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:268) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:410) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:394) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2023-11-17 12:24:36,046 INFO L158 Benchmark]: Toolchain (without parser) took 210855.58ms. Allocated memory was 273.7MB in the beginning and 4.3GB in the end (delta: 4.0GB). Free memory was 228.3MB in the beginning and 2.9GB in the end (delta: -2.6GB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2023-11-17 12:24:36,048 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 133.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:24:36,048 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.40ms. Allocated memory is still 273.7MB. Free memory was 228.0MB in the beginning and 215.0MB in the end (delta: 13.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-17 12:24:36,049 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.84ms. Allocated memory is still 273.7MB. Free memory was 215.0MB in the beginning and 211.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 12:24:36,049 INFO L158 Benchmark]: Boogie Preprocessor took 46.43ms. Allocated memory is still 273.7MB. Free memory was 211.9MB in the beginning and 209.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:24:36,049 INFO L158 Benchmark]: RCFGBuilder took 895.92ms. Allocated memory is still 273.7MB. Free memory was 209.3MB in the beginning and 180.7MB in the end (delta: 28.7MB). Peak memory consumption was 51.5MB. Max. memory is 8.0GB. [2023-11-17 12:24:36,049 INFO L158 Benchmark]: TraceAbstraction took 209599.02ms. Allocated memory was 273.7MB in the beginning and 4.3GB in the end (delta: 4.0GB). Free memory was 179.6MB in the beginning and 2.9GB in the end (delta: -2.7GB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. [2023-11-17 12:24:36,050 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 133.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 260.40ms. Allocated memory is still 273.7MB. Free memory was 228.0MB in the beginning and 215.0MB in the end (delta: 13.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.84ms. Allocated memory is still 273.7MB. Free memory was 215.0MB in the beginning and 211.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.43ms. Allocated memory is still 273.7MB. Free memory was 211.9MB in the beginning and 209.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 895.92ms. Allocated memory is still 273.7MB. Free memory was 209.3MB in the beginning and 180.7MB in the end (delta: 28.7MB). Peak memory consumption was 51.5MB. Max. memory is 8.0GB. * TraceAbstraction took 209599.02ms. Allocated memory was 273.7MB in the beginning and 4.3GB in the end (delta: 4.0GB). Free memory was 179.6MB in the beginning and 2.9GB in the end (delta: -2.7GB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6s, 56 PlacesBefore, 45 PlacesAfterwards, 50 TransitionsBefore, 39 TransitionsAfterwards, 870 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 1095 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 755, independent: 731, independent conditional: 0, independent unconditional: 731, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 520, independent: 496, independent conditional: 0, independent unconditional: 496, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 520, independent: 495, independent conditional: 0, independent unconditional: 495, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 54, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 755, independent: 235, independent conditional: 0, independent unconditional: 235, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 520, unknown conditional: 0, unknown unconditional: 520] , Statistics on independence cache: Total cache size (in pairs): 187, Positive cache size: 176, Positive conditional cache size: 0, Positive unconditional cache size: 176, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...