/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/04_incdec_cas.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:18:34,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:18:34,222 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:18:34,265 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:18:34,266 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:18:34,266 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:18:34,267 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:18:34,267 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:18:34,268 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:18:34,268 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:18:34,268 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:18:34,269 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:18:34,269 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:18:34,269 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:18:34,269 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:18:34,270 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:18:34,270 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:18:34,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:18:34,271 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:18:34,271 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:18:34,271 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:18:34,273 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:18:34,273 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:18:34,273 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:18:34,274 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:18:34,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:18:34,274 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:18:34,275 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:18:34,275 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:18:34,275 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:18:34,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:18:34,276 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:18:34,276 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:18:34,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:18:34,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:18:34,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:18:34,537 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:18:34,537 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:18:34,538 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/04_incdec_cas.i [2023-11-17 11:18:35,816 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:18:36,068 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:18:36,069 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i [2023-11-17 11:18:36,084 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf96780f/8d8a13c9723041c0a53f748213a6806d/FLAG4255edf92 [2023-11-17 11:18:36,096 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf96780f/8d8a13c9723041c0a53f748213a6806d [2023-11-17 11:18:36,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:18:36,100 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:18:36,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:18:36,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:18:36,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:18:36,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:18:36" (1/1) ... [2023-11-17 11:18:36,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ce89a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:18:36, skipping insertion in model container [2023-11-17 11:18:36,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:18:36" (1/1) ... [2023-11-17 11:18:36,164 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:18:36,487 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i[30369,30382] [2023-11-17 11:18:36,501 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i[30869,30882] [2023-11-17 11:18:36,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:18:36,522 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:18:36,571 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i[30369,30382] [2023-11-17 11:18:36,582 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i[30869,30882] [2023-11-17 11:18:36,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:18:36,624 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:18:36,625 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:18:36,631 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:18:36,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:18:36 WrapperNode [2023-11-17 11:18:36,633 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:18:36,635 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:18:36,635 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:18:36,635 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:18:36,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:18:36" (1/1) ... [2023-11-17 11:18:36,670 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:18:36" (1/1) ... [2023-11-17 11:18:36,697 INFO L138 Inliner]: procedures = 174, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 162 [2023-11-17 11:18:36,698 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:18:36,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:18:36,699 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:18:36,699 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:18:36,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:18:36" (1/1) ... [2023-11-17 11:18:36,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:18:36" (1/1) ... [2023-11-17 11:18:36,714 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:18:36" (1/1) ... [2023-11-17 11:18:36,714 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:18:36" (1/1) ... [2023-11-17 11:18:36,719 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:18:36" (1/1) ... [2023-11-17 11:18:36,723 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:18:36" (1/1) ... [2023-11-17 11:18:36,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:18:36" (1/1) ... [2023-11-17 11:18:36,726 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:18:36" (1/1) ... [2023-11-17 11:18:36,728 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:18:36,729 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:18:36,729 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:18:36,729 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:18:36,730 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:18:36" (1/1) ... [2023-11-17 11:18:36,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:18:36,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:18:36,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 11:18:36,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 11:18:36,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:18:36,791 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-17 11:18:36,792 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-17 11:18:36,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:18:36,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:18:36,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:18:36,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:18:36,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:18:36,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:18:36,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:18:36,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:18:36,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:18:36,794 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:18:36,915 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:18:36,918 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:18:37,195 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:18:37,490 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:18:37,490 INFO L307 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-17 11:18:37,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:18:37 BoogieIcfgContainer [2023-11-17 11:18:37,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:18:37,495 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:18:37,495 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:18:37,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:18:37,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:18:36" (1/3) ... [2023-11-17 11:18:37,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd1ea1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:18:37, skipping insertion in model container [2023-11-17 11:18:37,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:18:36" (2/3) ... [2023-11-17 11:18:37,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd1ea1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:18:37, skipping insertion in model container [2023-11-17 11:18:37,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:18:37" (3/3) ... [2023-11-17 11:18:37,501 INFO L112 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas.i [2023-11-17 11:18:37,518 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:18:37,519 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 11:18:37,519 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:18:37,587 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:18:37,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 36 transitions, 76 flow [2023-11-17 11:18:37,676 INFO L124 PetriNetUnfolderBase]: 9/38 cut-off events. [2023-11-17 11:18:37,677 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:18:37,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 9/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 93 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-11-17 11:18:37,682 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 36 transitions, 76 flow [2023-11-17 11:18:37,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 36 transitions, 76 flow [2023-11-17 11:18:37,692 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:18:37,703 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 36 transitions, 76 flow [2023-11-17 11:18:37,706 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 36 transitions, 76 flow [2023-11-17 11:18:37,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 36 transitions, 76 flow [2023-11-17 11:18:37,714 INFO L124 PetriNetUnfolderBase]: 9/38 cut-off events. [2023-11-17 11:18:37,714 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:18:37,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 9/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 93 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-11-17 11:18:37,715 INFO L119 LiptonReduction]: Number of co-enabled transitions 240 [2023-11-17 11:18:39,326 INFO L134 LiptonReduction]: Checked pairs total: 444 [2023-11-17 11:18:39,326 INFO L136 LiptonReduction]: Total number of compositions: 22 [2023-11-17 11:18:39,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:18:39,351 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;@2bef0049, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:18:39,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 11:18:39,357 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:18:39,357 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2023-11-17 11:18:39,357 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:18:39,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:18:39,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 11:18:39,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:18:39,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:18:39,367 INFO L85 PathProgramCache]: Analyzing trace with hash 441636127, now seen corresponding path program 1 times [2023-11-17 11:18:39,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:18:39,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808384636] [2023-11-17 11:18:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:18:39,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:18:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:18:39,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:18:39,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:18:39,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808384636] [2023-11-17 11:18:39,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808384636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:18:39,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:18:39,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:18:39,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612195917] [2023-11-17 11:18:39,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:18:39,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 11:18:39,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:18:39,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 11:18:39,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 11:18:39,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 58 [2023-11-17 11:18:39,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 24 transitions, 52 flow. Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:39,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:18:39,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 58 [2023-11-17 11:18:39,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:18:39,653 INFO L124 PetriNetUnfolderBase]: 37/78 cut-off events. [2023-11-17 11:18:39,653 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:18:39,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 78 events. 37/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 206 event pairs, 22 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 144. Up to 76 conditions per place. [2023-11-17 11:18:39,657 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 20 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-11-17 11:18:39,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 21 transitions, 86 flow [2023-11-17 11:18:39,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 11:18:39,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-17 11:18:39,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 29 transitions. [2023-11-17 11:18:39,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25 [2023-11-17 11:18:39,669 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 29 transitions. [2023-11-17 11:18:39,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 29 transitions. [2023-11-17 11:18:39,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:18:39,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 29 transitions. [2023-11-17 11:18:39,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:39,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:39,678 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:39,680 INFO L175 Difference]: Start difference. First operand has 20 places, 24 transitions, 52 flow. Second operand 2 states and 29 transitions. [2023-11-17 11:18:39,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 21 transitions, 86 flow [2023-11-17 11:18:39,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 21 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:18:39,686 INFO L231 Difference]: Finished difference. Result has 20 places, 21 transitions, 46 flow [2023-11-17 11:18:39,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=20, PETRI_TRANSITIONS=21} [2023-11-17 11:18:39,693 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 0 predicate places. [2023-11-17 11:18:39,693 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 21 transitions, 46 flow [2023-11-17 11:18:39,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:39,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:18:39,694 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-17 11:18:39,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:18:39,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:18:39,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:18:39,703 INFO L85 PathProgramCache]: Analyzing trace with hash 441580592, now seen corresponding path program 1 times [2023-11-17 11:18:39,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:18:39,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201392240] [2023-11-17 11:18:39,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:18:39,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:18:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:18:39,771 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 11:18:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:18:39,824 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 11:18:39,825 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 11:18:39,826 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-17 11:18:39,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-17 11:18:39,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-11-17 11:18:39,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-17 11:18:39,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-17 11:18:39,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:18:39,829 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-17 11:18:39,832 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-17 11:18:39,832 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-17 11:18:39,890 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:18:39,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 67 transitions, 144 flow [2023-11-17 11:18:39,913 INFO L124 PetriNetUnfolderBase]: 18/72 cut-off events. [2023-11-17 11:18:39,913 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:18:39,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 72 events. 18/72 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 223 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2023-11-17 11:18:39,915 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 67 transitions, 144 flow [2023-11-17 11:18:39,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 67 transitions, 144 flow [2023-11-17 11:18:39,917 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:18:39,917 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 67 transitions, 144 flow [2023-11-17 11:18:39,918 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 67 transitions, 144 flow [2023-11-17 11:18:39,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 67 transitions, 144 flow [2023-11-17 11:18:39,936 INFO L124 PetriNetUnfolderBase]: 18/72 cut-off events. [2023-11-17 11:18:39,936 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:18:39,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 72 events. 18/72 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 223 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2023-11-17 11:18:39,939 INFO L119 LiptonReduction]: Number of co-enabled transitions 2340 [2023-11-17 11:18:41,526 INFO L134 LiptonReduction]: Checked pairs total: 6735 [2023-11-17 11:18:41,527 INFO L136 LiptonReduction]: Total number of compositions: 42 [2023-11-17 11:18:41,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:18:41,538 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;@2bef0049, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:18:41,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-17 11:18:41,542 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:18:41,542 INFO L124 PetriNetUnfolderBase]: 4/19 cut-off events. [2023-11-17 11:18:41,542 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:18:41,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:18:41,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 11:18:41,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 11:18:41,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:18:41,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1219473405, now seen corresponding path program 1 times [2023-11-17 11:18:41,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:18:41,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884909866] [2023-11-17 11:18:41,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:18:41,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:18:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:18:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:18:41,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:18:41,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884909866] [2023-11-17 11:18:41,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884909866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:18:41,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:18:41,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:18:41,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178130688] [2023-11-17 11:18:41,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:18:41,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 11:18:41,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:18:41,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 11:18:41,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 11:18:41,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 109 [2023-11-17 11:18:41,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 51 transitions, 112 flow. Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:41,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:18:41,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 109 [2023-11-17 11:18:41,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:18:41,899 INFO L124 PetriNetUnfolderBase]: 1456/2139 cut-off events. [2023-11-17 11:18:41,900 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-17 11:18:41,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4323 conditions, 2139 events. 1456/2139 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8972 event pairs, 1006 based on Foata normal form. 0/1509 useless extension candidates. Maximal degree in co-relation 1572. Up to 2134 conditions per place. [2023-11-17 11:18:41,920 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 42 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2023-11-17 11:18:41,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 180 flow [2023-11-17 11:18:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 11:18:41,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-17 11:18:41,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2023-11-17 11:18:41,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27522935779816515 [2023-11-17 11:18:41,923 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 60 transitions. [2023-11-17 11:18:41,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 60 transitions. [2023-11-17 11:18:41,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:18:41,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 60 transitions. [2023-11-17 11:18:41,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:41,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:41,926 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:41,926 INFO L175 Difference]: Start difference. First operand has 39 places, 51 transitions, 112 flow. Second operand 2 states and 60 transitions. [2023-11-17 11:18:41,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 180 flow [2023-11-17 11:18:41,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:18:41,928 INFO L231 Difference]: Finished difference. Result has 39 places, 43 transitions, 96 flow [2023-11-17 11:18:41,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=43} [2023-11-17 11:18:41,929 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2023-11-17 11:18:41,929 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 43 transitions, 96 flow [2023-11-17 11:18:41,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:41,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:18:41,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:18:41,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:18:41,930 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 11:18:41,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:18:41,930 INFO L85 PathProgramCache]: Analyzing trace with hash 613200557, now seen corresponding path program 1 times [2023-11-17 11:18:41,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:18:41,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648571093] [2023-11-17 11:18:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:18:41,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:18:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:18:42,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:18:42,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:18:42,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648571093] [2023-11-17 11:18:42,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648571093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:18:42,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:18:42,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:18:42,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965291293] [2023-11-17 11:18:42,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:18:42,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:18:42,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:18:42,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:18:42,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:18:42,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 109 [2023-11-17 11:18:42,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 43 transitions, 96 flow. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:42,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:18:42,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 109 [2023-11-17 11:18:42,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:18:43,822 INFO L124 PetriNetUnfolderBase]: 2591/3820 cut-off events. [2023-11-17 11:18:43,822 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2023-11-17 11:18:43,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7677 conditions, 3820 events. 2591/3820 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 18624 event pairs, 970 based on Foata normal form. 0/2733 useless extension candidates. Maximal degree in co-relation 7672. Up to 2326 conditions per place. [2023-11-17 11:18:43,847 INFO L140 encePairwiseOnDemand]: 95/109 looper letters, 147 selfloop transitions, 32 changer transitions 0/180 dead transitions. [2023-11-17 11:18:43,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 180 transitions, 753 flow [2023-11-17 11:18:43,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 11:18:43,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 11:18:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2023-11-17 11:18:43,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.15929941618015012 [2023-11-17 11:18:43,850 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 191 transitions. [2023-11-17 11:18:43,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 191 transitions. [2023-11-17 11:18:43,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:18:43,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 191 transitions. [2023-11-17 11:18:43,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:43,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:43,855 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:43,855 INFO L175 Difference]: Start difference. First operand has 39 places, 43 transitions, 96 flow. Second operand 11 states and 191 transitions. [2023-11-17 11:18:43,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 180 transitions, 753 flow [2023-11-17 11:18:43,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 180 transitions, 753 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:18:43,859 INFO L231 Difference]: Finished difference. Result has 53 places, 77 transitions, 288 flow [2023-11-17 11:18:43,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=288, PETRI_PLACES=53, PETRI_TRANSITIONS=77} [2023-11-17 11:18:43,860 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2023-11-17 11:18:43,860 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 77 transitions, 288 flow [2023-11-17 11:18:43,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:43,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:18:43,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:18:43,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:18:43,861 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 11:18:43,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:18:43,862 INFO L85 PathProgramCache]: Analyzing trace with hash 613081760, now seen corresponding path program 1 times [2023-11-17 11:18:43,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:18:43,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413806272] [2023-11-17 11:18:43,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:18:43,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:18:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:18:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:18:44,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:18:44,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413806272] [2023-11-17 11:18:44,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413806272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:18:44,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:18:44,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:18:44,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932785695] [2023-11-17 11:18:44,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:18:44,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:18:44,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:18:44,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:18:44,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:18:44,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 109 [2023-11-17 11:18:44,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 77 transitions, 288 flow. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:44,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:18:44,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 109 [2023-11-17 11:18:44,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:18:45,513 INFO L124 PetriNetUnfolderBase]: 4104/6022 cut-off events. [2023-11-17 11:18:45,513 INFO L125 PetriNetUnfolderBase]: For 2102/2102 co-relation queries the response was YES. [2023-11-17 11:18:45,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14910 conditions, 6022 events. 4104/6022 cut-off events. For 2102/2102 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 32142 event pairs, 501 based on Foata normal form. 0/4912 useless extension candidates. Maximal degree in co-relation 14900. Up to 4062 conditions per place. [2023-11-17 11:18:45,557 INFO L140 encePairwiseOnDemand]: 92/109 looper letters, 161 selfloop transitions, 64 changer transitions 0/226 dead transitions. [2023-11-17 11:18:45,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 226 transitions, 1159 flow [2023-11-17 11:18:45,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 11:18:45,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 11:18:45,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2023-11-17 11:18:45,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.1798165137614679 [2023-11-17 11:18:45,559 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 196 transitions. [2023-11-17 11:18:45,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 196 transitions. [2023-11-17 11:18:45,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:18:45,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 196 transitions. [2023-11-17 11:18:45,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 19.6) internal successors, (196), 10 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:45,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 109.0) internal successors, (1199), 11 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:45,566 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 109.0) internal successors, (1199), 11 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:45,566 INFO L175 Difference]: Start difference. First operand has 53 places, 77 transitions, 288 flow. Second operand 10 states and 196 transitions. [2023-11-17 11:18:45,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 226 transitions, 1159 flow [2023-11-17 11:18:45,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 226 transitions, 1159 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:18:45,583 INFO L231 Difference]: Finished difference. Result has 67 places, 137 transitions, 730 flow [2023-11-17 11:18:45,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=730, PETRI_PLACES=67, PETRI_TRANSITIONS=137} [2023-11-17 11:18:45,585 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2023-11-17 11:18:45,585 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 137 transitions, 730 flow [2023-11-17 11:18:45,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:45,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:18:45,585 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-17 11:18:45,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:18:45,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 11:18:45,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:18:45,586 INFO L85 PathProgramCache]: Analyzing trace with hash -942732756, now seen corresponding path program 1 times [2023-11-17 11:18:45,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:18:45,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51307815] [2023-11-17 11:18:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:18:45,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:18:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:18:45,599 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 11:18:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:18:45,617 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 11:18:45,618 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 11:18:45,618 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-17 11:18:45,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-17 11:18:45,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-11-17 11:18:45,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-11-17 11:18:45,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-11-17 11:18:45,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-17 11:18:45,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-17 11:18:45,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:18:45,619 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-17 11:18:45,620 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-17 11:18:45,620 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-17 11:18:45,685 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:18:45,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 98 transitions, 214 flow [2023-11-17 11:18:45,699 INFO L124 PetriNetUnfolderBase]: 27/106 cut-off events. [2023-11-17 11:18:45,699 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-17 11:18:45,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 27/106 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 377 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2023-11-17 11:18:45,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 98 transitions, 214 flow [2023-11-17 11:18:45,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 98 transitions, 214 flow [2023-11-17 11:18:45,702 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:18:45,702 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 98 transitions, 214 flow [2023-11-17 11:18:45,703 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 98 transitions, 214 flow [2023-11-17 11:18:45,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 98 transitions, 214 flow [2023-11-17 11:18:45,712 INFO L124 PetriNetUnfolderBase]: 27/106 cut-off events. [2023-11-17 11:18:45,712 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-17 11:18:45,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 27/106 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 377 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2023-11-17 11:18:45,715 INFO L119 LiptonReduction]: Number of co-enabled transitions 6300 [2023-11-17 11:18:47,761 INFO L134 LiptonReduction]: Checked pairs total: 17564 [2023-11-17 11:18:47,761 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-11-17 11:18:47,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:18:47,767 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;@2bef0049, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:18:47,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-17 11:18:47,770 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:18:47,770 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2023-11-17 11:18:47,770 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:18:47,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:18:47,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 11:18:47,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-17 11:18:47,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:18:47,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1371812131, now seen corresponding path program 1 times [2023-11-17 11:18:47,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:18:47,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865727910] [2023-11-17 11:18:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:18:47,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:18:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:18:47,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:18:47,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:18:47,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865727910] [2023-11-17 11:18:47,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865727910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:18:47,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:18:47,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:18:47,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144797148] [2023-11-17 11:18:47,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:18:47,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 11:18:47,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:18:47,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 11:18:47,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 11:18:47,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 156 [2023-11-17 11:18:47,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 75 transitions, 168 flow. Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:47,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:18:47,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 156 [2023-11-17 11:18:47,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:18:52,099 INFO L124 PetriNetUnfolderBase]: 36727/47621 cut-off events. [2023-11-17 11:18:52,100 INFO L125 PetriNetUnfolderBase]: For 1659/1659 co-relation queries the response was YES. [2023-11-17 11:18:52,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96089 conditions, 47621 events. 36727/47621 cut-off events. For 1659/1659 co-relation queries the response was YES. Maximal size of possible extension queue 1395. Compared 238467 event pairs, 26152 based on Foata normal form. 0/32816 useless extension candidates. Maximal degree in co-relation 4880. Up to 47524 conditions per place. [2023-11-17 11:18:52,409 INFO L140 encePairwiseOnDemand]: 145/156 looper letters, 63 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2023-11-17 11:18:52,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 64 transitions, 272 flow [2023-11-17 11:18:52,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 11:18:52,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-17 11:18:52,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 88 transitions. [2023-11-17 11:18:52,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28205128205128205 [2023-11-17 11:18:52,413 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 88 transitions. [2023-11-17 11:18:52,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 88 transitions. [2023-11-17 11:18:52,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:18:52,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 88 transitions. [2023-11-17 11:18:52,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:52,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:52,416 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:52,416 INFO L175 Difference]: Start difference. First operand has 57 places, 75 transitions, 168 flow. Second operand 2 states and 88 transitions. [2023-11-17 11:18:52,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 64 transitions, 272 flow [2023-11-17 11:18:52,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 64 transitions, 270 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-17 11:18:52,420 INFO L231 Difference]: Finished difference. Result has 57 places, 64 transitions, 144 flow [2023-11-17 11:18:52,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=144, PETRI_PLACES=57, PETRI_TRANSITIONS=64} [2023-11-17 11:18:52,422 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2023-11-17 11:18:52,423 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 64 transitions, 144 flow [2023-11-17 11:18:52,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:52,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:18:52,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:18:52,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:18:52,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-17 11:18:52,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:18:52,425 INFO L85 PathProgramCache]: Analyzing trace with hash 243612230, now seen corresponding path program 1 times [2023-11-17 11:18:52,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:18:52,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880694204] [2023-11-17 11:18:52,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:18:52,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:18:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:18:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:18:53,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:18:53,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880694204] [2023-11-17 11:18:53,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880694204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:18:53,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:18:53,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:18:53,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764305475] [2023-11-17 11:18:53,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:18:53,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:18:53,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:18:53,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:18:53,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:18:53,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 156 [2023-11-17 11:18:53,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 64 transitions, 144 flow. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:18:53,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:18:53,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 156 [2023-11-17 11:18:53,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:19:01,047 INFO L124 PetriNetUnfolderBase]: 73626/95173 cut-off events. [2023-11-17 11:19:01,048 INFO L125 PetriNetUnfolderBase]: For 2344/2344 co-relation queries the response was YES. [2023-11-17 11:19:01,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191610 conditions, 95173 events. 73626/95173 cut-off events. For 2344/2344 co-relation queries the response was YES. Maximal size of possible extension queue 2828. Compared 527614 event pairs, 9688 based on Foata normal form. 0/66500 useless extension candidates. Maximal degree in co-relation 191604. Up to 53457 conditions per place. [2023-11-17 11:19:02,034 INFO L140 encePairwiseOnDemand]: 134/156 looper letters, 343 selfloop transitions, 86 changer transitions 0/430 dead transitions. [2023-11-17 11:19:02,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 430 transitions, 1829 flow [2023-11-17 11:19:02,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:19:02,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:19:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 442 transitions. [2023-11-17 11:19:02,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2361111111111111 [2023-11-17 11:19:02,040 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 442 transitions. [2023-11-17 11:19:02,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 442 transitions. [2023-11-17 11:19:02,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:19:02,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 442 transitions. [2023-11-17 11:19:02,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 36.833333333333336) internal successors, (442), 12 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:19:02,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 156.0) internal successors, (2028), 13 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:19:02,049 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 156.0) internal successors, (2028), 13 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:19:02,050 INFO L175 Difference]: Start difference. First operand has 57 places, 64 transitions, 144 flow. Second operand 12 states and 442 transitions. [2023-11-17 11:19:02,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 430 transitions, 1829 flow [2023-11-17 11:19:02,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 430 transitions, 1829 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:19:02,070 INFO L231 Difference]: Finished difference. Result has 75 places, 159 transitions, 683 flow [2023-11-17 11:19:02,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=683, PETRI_PLACES=75, PETRI_TRANSITIONS=159} [2023-11-17 11:19:02,071 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2023-11-17 11:19:02,072 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 159 transitions, 683 flow [2023-11-17 11:19:02,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:19:02,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:19:02,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:19:02,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:19:02,072 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-17 11:19:02,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:19:02,073 INFO L85 PathProgramCache]: Analyzing trace with hash 242647629, now seen corresponding path program 1 times [2023-11-17 11:19:02,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:19:02,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619415504] [2023-11-17 11:19:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:19:02,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:19:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:19:02,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:19:02,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:19:02,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619415504] [2023-11-17 11:19:02,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619415504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:19:02,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:19:02,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:19:02,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319453308] [2023-11-17 11:19:02,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:19:02,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:19:02,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:19:02,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:19:02,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:19:02,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 156 [2023-11-17 11:19:02,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 159 transitions, 683 flow. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:19:02,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:19:02,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 156 [2023-11-17 11:19:02,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:19:11,336 INFO L124 PetriNetUnfolderBase]: 73737/95238 cut-off events. [2023-11-17 11:19:11,336 INFO L125 PetriNetUnfolderBase]: For 75615/75615 co-relation queries the response was YES. [2023-11-17 11:19:11,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258403 conditions, 95238 events. 73737/95238 cut-off events. For 75615/75615 co-relation queries the response was YES. Maximal size of possible extension queue 2800. Compared 515324 event pairs, 35402 based on Foata normal form. 0/76695 useless extension candidates. Maximal degree in co-relation 258389. Up to 94894 conditions per place. [2023-11-17 11:19:12,096 INFO L140 encePairwiseOnDemand]: 143/156 looper letters, 178 selfloop transitions, 25 changer transitions 0/204 dead transitions. [2023-11-17 11:19:12,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 204 transitions, 1253 flow [2023-11-17 11:19:12,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 11:19:12,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 11:19:12,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2023-11-17 11:19:12,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.08048433048433049 [2023-11-17 11:19:12,098 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 113 transitions. [2023-11-17 11:19:12,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 113 transitions. [2023-11-17 11:19:12,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:19:12,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 113 transitions. [2023-11-17 11:19:12,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:19:12,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 156.0) internal successors, (1560), 10 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:19:12,100 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 156.0) internal successors, (1560), 10 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:19:12,101 INFO L175 Difference]: Start difference. First operand has 75 places, 159 transitions, 683 flow. Second operand 9 states and 113 transitions. [2023-11-17 11:19:12,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 204 transitions, 1253 flow [2023-11-17 11:19:12,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 204 transitions, 1253 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:19:12,456 INFO L231 Difference]: Finished difference. Result has 88 places, 183 transitions, 893 flow [2023-11-17 11:19:12,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=893, PETRI_PLACES=88, PETRI_TRANSITIONS=183} [2023-11-17 11:19:12,457 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2023-11-17 11:19:12,457 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 183 transitions, 893 flow [2023-11-17 11:19:12,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:19:12,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:19:12,458 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:19:12,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:19:12,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-17 11:19:12,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:19:12,458 INFO L85 PathProgramCache]: Analyzing trace with hash 576557792, now seen corresponding path program 1 times [2023-11-17 11:19:12,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:19:12,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099383896] [2023-11-17 11:19:12,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:19:12,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:19:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:19:13,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:19:13,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:19:13,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099383896] [2023-11-17 11:19:13,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099383896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:19:13,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420075627] [2023-11-17 11:19:13,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:19:13,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:19:13,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:19:13,176 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:19:13,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 11:19:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:19:13,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-17 11:19:13,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:19:13,456 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-11-17 11:19:13,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-11-17 11:19:13,520 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 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-17 11:19:13,578 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-17 11:19:13,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-17 11:19:13,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:19:13,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:19:13,831 INFO L349 Elim1Store]: treesize reduction 88, result has 40.1 percent of original size [2023-11-17 11:19:13,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 83 treesize of output 198 [2023-11-17 11:19:13,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:19:13,909 INFO L349 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2023-11-17 11:19:13,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 81 [2023-11-17 11:19:13,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-17 11:19:14,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-17 11:19:14,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-17 11:19:14,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 22 treesize of output 18 [2023-11-17 11:19:14,169 INFO L349 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2023-11-17 11:19:14,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 162 [2023-11-17 11:19:14,291 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:19:14,293 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2023-11-17 11:19:14,295 WARN L561 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2023-11-17 11:19:14,387 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:19:14,388 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2023-11-17 11:19:14,391 WARN L561 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2023-11-17 11:19:14,584 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:19:14,585 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2023-11-17 11:19:14,637 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:19:14,638 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2023-11-17 11:19:14,811 INFO L349 Elim1Store]: treesize reduction 124, result has 35.4 percent of original size [2023-11-17 11:19:14,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 204 treesize of output 301 [2023-11-17 11:19:15,400 WARN L561 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2023-11-17 11:19:15,510 WARN L561 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2023-11-17 11:19:16,085 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:19:16,087 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2023-11-17 11:19:16,159 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:19:16,160 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2023-11-17 11:19:16,205 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:19:16,206 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2023-11-17 11:19:16,261 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:19:16,262 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2023-11-17 11:19:16,886 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:16,887 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:16,889 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:16,895 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-11-17 11:19:16,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 63 treesize of output 76 [2023-11-17 11:19:16,938 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:16,940 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:16,946 INFO L349 Elim1Store]: treesize reduction 31, result has 3.1 percent of original size [2023-11-17 11:19:16,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 7 [2023-11-17 11:19:16,978 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:16,979 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:16,979 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:16,990 INFO L349 Elim1Store]: treesize reduction 78, result has 1.3 percent of original size [2023-11-17 11:19:16,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 76 [2023-11-17 11:19:17,114 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:17,115 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:17,116 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:17,159 INFO L349 Elim1Store]: treesize reduction 171, result has 4.5 percent of original size [2023-11-17 11:19:17,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 108 [2023-11-17 11:19:17,278 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-17 11:19:17,370 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:17,371 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:17,372 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:17,428 INFO L349 Elim1Store]: treesize reduction 217, result has 3.6 percent of original size [2023-11-17 11:19:17,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 94 treesize of output 108 [2023-11-17 11:19:18,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:19:18,213 INFO L349 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-11-17 11:19:18,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 164 treesize of output 166 [2023-11-17 11:19:18,330 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:18,333 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:18,338 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 11:19:18,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 129 treesize of output 123 [2023-11-17 11:19:18,409 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:19:18,410 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 213 [2023-11-17 11:19:18,523 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:19:18,528 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 213 [2023-11-17 11:19:18,637 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:19:18,638 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2023-11-17 11:19:18,686 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:19:18,687 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2023-11-17 11:19:18,992 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:19:19,002 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1455 [2023-11-17 11:19:21,061 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:21,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 162 [2023-11-17 11:19:21,180 INFO L349 Elim1Store]: treesize reduction 124, result has 33.3 percent of original size [2023-11-17 11:19:21,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 176 treesize of output 273 [2023-11-17 11:19:21,266 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:19:21,267 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2023-11-17 11:19:21,270 WARN L561 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2023-11-17 11:19:21,294 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:21,295 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 11:19:21,312 INFO L349 Elim1Store]: treesize reduction 65, result has 11.0 percent of original size [2023-11-17 11:19:21,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 184 treesize of output 178 [2023-11-17 11:19:21,372 INFO L349 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2023-11-17 11:19:21,373 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 70 treesize of output 86 [2023-11-17 11:20:59,135 WARN L293 SmtUtils]: Spent 1.51m on a formula simplification. DAG size of input: 1871 DAG size of output: 1569 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 11:20:59,136 INFO L349 Elim1Store]: treesize reduction 756, result has 80.1 percent of original size [2023-11-17 11:20:59,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 3 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 432 case distinctions, treesize of input 3527 treesize of output 6182 [2023-11-17 11:21:00,550 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 2716 treesize of output 2714 [2023-11-17 11:21:01,191 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 2714 treesize of output 2712 [2023-11-17 11:21:01,698 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 2712 treesize of output 2710 [2023-11-17 11:21:02,190 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 2710 treesize of output 2708 [2023-11-17 11:21:02,779 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 2708 treesize of output 2706 [2023-11-17 11:21:03,391 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 2706 treesize of output 2704 [2023-11-17 11:21:06,401 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 5 treesize of output 3 [2023-11-17 11:21:07,785 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 5 treesize of output 3 [2023-11-17 11:23:20,608 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 5 treesize of output 3