/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:38:04,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:38:04,494 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 12:38:04,524 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:38:04,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:38:04,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:38:04,525 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:38:04,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:38:04,526 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:38:04,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:38:04,529 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:38:04,530 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:38:04,530 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:38:04,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:38:04,531 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:38:04,531 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:38:04,531 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:38:04,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:38:04,531 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:38:04,532 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:38:04,532 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:38:04,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:38:04,533 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:38:04,533 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:38:04,533 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:38:04,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:38:04,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:38:04,533 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:38:04,533 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:38:04,534 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:38:04,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:38:04,534 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:38:04,535 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:38:04,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:38:04,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:38:04,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:38:04,741 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:38:04,742 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:38:04,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-11-17 12:38:05,829 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:38:05,968 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:38:05,969 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-11-17 12:38:05,977 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff25460e9/907e96b6c1fc4a95936917706a312388/FLAG5507bc67d [2023-11-17 12:38:05,998 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff25460e9/907e96b6c1fc4a95936917706a312388 [2023-11-17 12:38:06,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:38:06,002 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:38:06,005 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:38:06,005 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:38:06,011 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:38:06,011 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:38:05" (1/1) ... [2023-11-17 12:38:06,013 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be4350f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:38:06, skipping insertion in model container [2023-11-17 12:38:06,013 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:38:05" (1/1) ... [2023-11-17 12:38:06,037 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:38:06,184 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c[3072,3085] [2023-11-17 12:38:06,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:38:06,195 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:38:06,223 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c[3072,3085] [2023-11-17 12:38:06,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:38:06,228 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:38:06,228 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:38:06,234 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:38:06,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:38:06 WrapperNode [2023-11-17 12:38:06,235 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:38:06,236 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:38:06,236 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:38:06,236 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:38:06,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:38:06" (1/1) ... [2023-11-17 12:38:06,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:38:06" (1/1) ... [2023-11-17 12:38:06,267 INFO L138 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 124 [2023-11-17 12:38:06,267 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:38:06,268 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:38:06,268 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:38:06,268 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:38:06,274 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:38:06" (1/1) ... [2023-11-17 12:38:06,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:38:06" (1/1) ... [2023-11-17 12:38:06,286 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:38:06" (1/1) ... [2023-11-17 12:38:06,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:38:06" (1/1) ... [2023-11-17 12:38:06,289 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:38:06" (1/1) ... [2023-11-17 12:38:06,290 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:38:06" (1/1) ... [2023-11-17 12:38:06,291 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:38:06" (1/1) ... [2023-11-17 12:38:06,292 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:38:06" (1/1) ... [2023-11-17 12:38:06,293 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:38:06,293 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:38:06,294 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:38:06,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:38:06,294 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:38:06" (1/1) ... [2023-11-17 12:38:06,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:38:06,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:38:06,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 12:38:06,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 12:38:06,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:38:06,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:38:06,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:38:06,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:38:06,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:38:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:38:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:38:06,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:38:06,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:38:06,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:38:06,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:38:06,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:38:06,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:38:06,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:38:06,357 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 12:38:06,437 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:38:06,439 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:38:06,574 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:38:06,700 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:38:06,701 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 12:38:06,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:38:06 BoogieIcfgContainer [2023-11-17 12:38:06,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:38:06,703 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:38:06,703 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:38:06,712 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:38:06,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:38:05" (1/3) ... [2023-11-17 12:38:06,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bee4ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:38:06, skipping insertion in model container [2023-11-17 12:38:06,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:38:06" (2/3) ... [2023-11-17 12:38:06,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bee4ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:38:06, skipping insertion in model container [2023-11-17 12:38:06,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:38:06" (3/3) ... [2023-11-17 12:38:06,714 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2023-11-17 12:38:06,740 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:38:06,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:38:06,741 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:38:06,786 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 12:38:06,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 84 flow [2023-11-17 12:38:06,854 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-11-17 12:38:06,855 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 12:38:06,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 0/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-17 12:38:06,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 35 transitions, 84 flow [2023-11-17 12:38:06,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 32 transitions, 76 flow [2023-11-17 12:38:06,868 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:38:06,885 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 32 transitions, 76 flow [2023-11-17 12:38:06,893 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 32 transitions, 76 flow [2023-11-17 12:38:06,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 76 flow [2023-11-17 12:38:06,909 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2023-11-17 12:38:06,910 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 12:38:06,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 0/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-17 12:38:06,910 INFO L119 LiptonReduction]: Number of co-enabled transitions 374 [2023-11-17 12:38:07,214 INFO L134 LiptonReduction]: Checked pairs total: 1091 [2023-11-17 12:38:07,215 INFO L136 LiptonReduction]: Total number of compositions: 9 [2023-11-17 12:38:07,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:38:07,232 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;@5a3d12c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:38:07,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 12:38:07,241 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:38:07,241 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2023-11-17 12:38:07,241 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 12:38:07,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:38:07,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:38:07,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:38:07,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:38:07,245 INFO L85 PathProgramCache]: Analyzing trace with hash 293643771, now seen corresponding path program 1 times [2023-11-17 12:38:07,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:38:07,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085891359] [2023-11-17 12:38:07,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:38:07,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:38:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:38:07,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:38:07,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:38:07,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085891359] [2023-11-17 12:38:07,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085891359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:38:07,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:38:07,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:38:07,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269877350] [2023-11-17 12:38:07,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:38:07,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:38:07,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:38:07,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:38:07,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:38:07,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2023-11-17 12:38:07,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 58 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:07,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:38:07,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2023-11-17 12:38:07,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:38:07,926 INFO L124 PetriNetUnfolderBase]: 217/431 cut-off events. [2023-11-17 12:38:07,926 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-17 12:38:07,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 903 conditions, 431 events. 217/431 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1559 event pairs, 95 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 756. Up to 180 conditions per place. [2023-11-17 12:38:07,932 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 42 selfloop transitions, 6 changer transitions 14/62 dead transitions. [2023-11-17 12:38:07,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 62 transitions, 281 flow [2023-11-17 12:38:07,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:38:07,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:38:07,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2023-11-17 12:38:07,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2023-11-17 12:38:07,946 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 168 transitions. [2023-11-17 12:38:07,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 168 transitions. [2023-11-17 12:38:07,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:38:07,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 168 transitions. [2023-11-17 12:38:07,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:07,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:07,957 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:07,958 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 58 flow. Second operand 7 states and 168 transitions. [2023-11-17 12:38:07,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 62 transitions, 281 flow [2023-11-17 12:38:07,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 62 transitions, 259 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 12:38:07,964 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 85 flow [2023-11-17 12:38:07,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=85, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-11-17 12:38:07,969 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-11-17 12:38:07,969 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 85 flow [2023-11-17 12:38:07,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:07,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:38:07,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:38:07,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:38:07,970 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:38:07,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:38:07,972 INFO L85 PathProgramCache]: Analyzing trace with hash 657208283, now seen corresponding path program 2 times [2023-11-17 12:38:07,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:38:07,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617347303] [2023-11-17 12:38:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:38:07,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:38:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:38:08,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:38:08,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:38:08,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617347303] [2023-11-17 12:38:08,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617347303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:38:08,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:38:08,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 12:38:08,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295082987] [2023-11-17 12:38:08,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:38:08,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:38:08,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:38:08,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:38:08,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:38:08,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2023-11-17 12:38:08,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 85 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:38:08,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2023-11-17 12:38:08,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:38:08,261 INFO L124 PetriNetUnfolderBase]: 204/499 cut-off events. [2023-11-17 12:38:08,261 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-17 12:38:08,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 499 events. 204/499 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2574 event pairs, 24 based on Foata normal form. 6/495 useless extension candidates. Maximal degree in co-relation 1010. Up to 86 conditions per place. [2023-11-17 12:38:08,266 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 47 selfloop transitions, 15 changer transitions 3/73 dead transitions. [2023-11-17 12:38:08,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 73 transitions, 314 flow [2023-11-17 12:38:08,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 12:38:08,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 12:38:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2023-11-17 12:38:08,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2023-11-17 12:38:08,271 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 183 transitions. [2023-11-17 12:38:08,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 183 transitions. [2023-11-17 12:38:08,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:38:08,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 183 transitions. [2023-11-17 12:38:08,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 20.333333333333332) internal successors, (183), 9 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,276 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,277 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 85 flow. Second operand 9 states and 183 transitions. [2023-11-17 12:38:08,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 73 transitions, 314 flow [2023-11-17 12:38:08,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 73 transitions, 310 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 12:38:08,281 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 164 flow [2023-11-17 12:38:08,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=164, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-11-17 12:38:08,281 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2023-11-17 12:38:08,282 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 164 flow [2023-11-17 12:38:08,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:38:08,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:38:08,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:38:08,283 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:38:08,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:38:08,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1115006343, now seen corresponding path program 3 times [2023-11-17 12:38:08,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:38:08,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605254386] [2023-11-17 12:38:08,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:38:08,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:38:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:38:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:38:08,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:38:08,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605254386] [2023-11-17 12:38:08,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605254386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:38:08,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:38:08,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:38:08,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302379290] [2023-11-17 12:38:08,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:38:08,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:38:08,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:38:08,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:38:08,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:38:08,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2023-11-17 12:38:08,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 164 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:38:08,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2023-11-17 12:38:08,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:38:08,577 INFO L124 PetriNetUnfolderBase]: 360/717 cut-off events. [2023-11-17 12:38:08,578 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2023-11-17 12:38:08,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1942 conditions, 717 events. 360/717 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3216 event pairs, 151 based on Foata normal form. 2/719 useless extension candidates. Maximal degree in co-relation 795. Up to 308 conditions per place. [2023-11-17 12:38:08,581 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 42 selfloop transitions, 5 changer transitions 38/85 dead transitions. [2023-11-17 12:38:08,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 85 transitions, 500 flow [2023-11-17 12:38:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:38:08,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:38:08,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2023-11-17 12:38:08,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2023-11-17 12:38:08,582 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 161 transitions. [2023-11-17 12:38:08,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 161 transitions. [2023-11-17 12:38:08,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:38:08,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 161 transitions. [2023-11-17 12:38:08,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,585 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,585 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 164 flow. Second operand 7 states and 161 transitions. [2023-11-17 12:38:08,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 85 transitions, 500 flow [2023-11-17 12:38:08,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 85 transitions, 500 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 12:38:08,590 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 147 flow [2023-11-17 12:38:08,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=147, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2023-11-17 12:38:08,592 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2023-11-17 12:38:08,592 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 147 flow [2023-11-17 12:38:08,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:38:08,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:38:08,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:38:08,593 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:38:08,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:38:08,593 INFO L85 PathProgramCache]: Analyzing trace with hash -574453527, now seen corresponding path program 4 times [2023-11-17 12:38:08,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:38:08,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395542252] [2023-11-17 12:38:08,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:38:08,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:38:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:38:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:38:08,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:38:08,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395542252] [2023-11-17 12:38:08,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395542252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:38:08,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:38:08,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:38:08,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991510583] [2023-11-17 12:38:08,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:38:08,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:38:08,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:38:08,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:38:08,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:38:08,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2023-11-17 12:38:08,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:38:08,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2023-11-17 12:38:08,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:38:08,714 INFO L124 PetriNetUnfolderBase]: 155/404 cut-off events. [2023-11-17 12:38:08,715 INFO L125 PetriNetUnfolderBase]: For 285/307 co-relation queries the response was YES. [2023-11-17 12:38:08,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1069 conditions, 404 events. 155/404 cut-off events. For 285/307 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1975 event pairs, 121 based on Foata normal form. 2/394 useless extension candidates. Maximal degree in co-relation 1046. Up to 319 conditions per place. [2023-11-17 12:38:08,717 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 27 selfloop transitions, 3 changer transitions 3/39 dead transitions. [2023-11-17 12:38:08,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 229 flow [2023-11-17 12:38:08,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:38:08,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:38:08,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2023-11-17 12:38:08,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2023-11-17 12:38:08,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 76 transitions. [2023-11-17 12:38:08,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 76 transitions. [2023-11-17 12:38:08,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:38:08,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 76 transitions. [2023-11-17 12:38:08,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,720 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 147 flow. Second operand 3 states and 76 transitions. [2023-11-17 12:38:08,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 229 flow [2023-11-17 12:38:08,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 214 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-17 12:38:08,722 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 143 flow [2023-11-17 12:38:08,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2023-11-17 12:38:08,724 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2023-11-17 12:38:08,724 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 143 flow [2023-11-17 12:38:08,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:38:08,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:38:08,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 12:38:08,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:38:08,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:38:08,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1749596145, now seen corresponding path program 5 times [2023-11-17 12:38:08,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:38:08,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78364560] [2023-11-17 12:38:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:38:08,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:38:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:38:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:38:08,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:38:08,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78364560] [2023-11-17 12:38:08,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78364560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:38:08,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:38:08,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:38:08,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744144284] [2023-11-17 12:38:08,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:38:08,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:38:08,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:38:08,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:38:08,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:38:08,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2023-11-17 12:38:08,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:38:08,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2023-11-17 12:38:08,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:38:08,842 INFO L124 PetriNetUnfolderBase]: 145/386 cut-off events. [2023-11-17 12:38:08,842 INFO L125 PetriNetUnfolderBase]: For 249/269 co-relation queries the response was YES. [2023-11-17 12:38:08,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 994 conditions, 386 events. 145/386 cut-off events. For 249/269 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1898 event pairs, 105 based on Foata normal form. 8/384 useless extension candidates. Maximal degree in co-relation 454. Up to 291 conditions per place. [2023-11-17 12:38:08,845 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 29 selfloop transitions, 5 changer transitions 1/41 dead transitions. [2023-11-17 12:38:08,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 241 flow [2023-11-17 12:38:08,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:38:08,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:38:08,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2023-11-17 12:38:08,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2023-11-17 12:38:08,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2023-11-17 12:38:08,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2023-11-17 12:38:08,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:38:08,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2023-11-17 12:38:08,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,847 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 143 flow. Second operand 3 states and 78 transitions. [2023-11-17 12:38:08,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 241 flow [2023-11-17 12:38:08,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 231 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 12:38:08,850 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 154 flow [2023-11-17 12:38:08,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-11-17 12:38:08,850 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2023-11-17 12:38:08,851 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 154 flow [2023-11-17 12:38:08,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:38:08,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:38:08,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 12:38:08,851 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:38:08,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:38:08,852 INFO L85 PathProgramCache]: Analyzing trace with hash -243680291, now seen corresponding path program 6 times [2023-11-17 12:38:08,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:38:08,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554661311] [2023-11-17 12:38:08,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:38:08,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:38:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:38:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:38:08,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:38:08,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554661311] [2023-11-17 12:38:08,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554661311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:38:08,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:38:08,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 12:38:08,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943573706] [2023-11-17 12:38:08,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:38:08,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:38:08,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:38:08,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:38:08,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:38:08,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2023-11-17 12:38:08,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:08,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:38:08,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2023-11-17 12:38:08,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:38:09,112 INFO L124 PetriNetUnfolderBase]: 155/424 cut-off events. [2023-11-17 12:38:09,112 INFO L125 PetriNetUnfolderBase]: For 317/345 co-relation queries the response was YES. [2023-11-17 12:38:09,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 424 events. 155/424 cut-off events. For 317/345 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2132 event pairs, 35 based on Foata normal form. 18/432 useless extension candidates. Maximal degree in co-relation 514. Up to 128 conditions per place. [2023-11-17 12:38:09,114 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 39 selfloop transitions, 8 changer transitions 13/66 dead transitions. [2023-11-17 12:38:09,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 370 flow [2023-11-17 12:38:09,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:38:09,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:38:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2023-11-17 12:38:09,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2023-11-17 12:38:09,116 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 164 transitions. [2023-11-17 12:38:09,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 164 transitions. [2023-11-17 12:38:09,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:38:09,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 164 transitions. [2023-11-17 12:38:09,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:09,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:09,117 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:09,117 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 154 flow. Second operand 8 states and 164 transitions. [2023-11-17 12:38:09,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 370 flow [2023-11-17 12:38:09,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 66 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 12:38:09,119 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 150 flow [2023-11-17 12:38:09,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=150, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2023-11-17 12:38:09,120 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2023-11-17 12:38:09,120 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 150 flow [2023-11-17 12:38:09,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:09,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:38:09,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:38:09,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 12:38:09,120 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:38:09,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:38:09,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1715613291, now seen corresponding path program 7 times [2023-11-17 12:38:09,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:38:09,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481018717] [2023-11-17 12:38:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:38:09,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:38:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:38:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:38:09,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:38:09,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481018717] [2023-11-17 12:38:09,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481018717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:38:09,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:38:09,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 12:38:09,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371519993] [2023-11-17 12:38:09,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:38:09,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:38:09,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:38:09,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:38:09,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:38:09,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2023-11-17 12:38:09,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:09,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:38:09,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2023-11-17 12:38:09,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:38:09,295 INFO L124 PetriNetUnfolderBase]: 91/240 cut-off events. [2023-11-17 12:38:09,296 INFO L125 PetriNetUnfolderBase]: For 184/204 co-relation queries the response was YES. [2023-11-17 12:38:09,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 240 events. 91/240 cut-off events. For 184/204 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 951 event pairs, 25 based on Foata normal form. 10/244 useless extension candidates. Maximal degree in co-relation 456. Up to 128 conditions per place. [2023-11-17 12:38:09,297 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 21 selfloop transitions, 3 changer transitions 10/40 dead transitions. [2023-11-17 12:38:09,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 233 flow [2023-11-17 12:38:09,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:38:09,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:38:09,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2023-11-17 12:38:09,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-11-17 12:38:09,298 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 99 transitions. [2023-11-17 12:38:09,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 99 transitions. [2023-11-17 12:38:09,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:38:09,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 99 transitions. [2023-11-17 12:38:09,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:09,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:09,299 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:09,299 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 150 flow. Second operand 5 states and 99 transitions. [2023-11-17 12:38:09,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 233 flow [2023-11-17 12:38:09,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 207 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-11-17 12:38:09,300 INFO L231 Difference]: Finished difference. Result has 43 places, 26 transitions, 101 flow [2023-11-17 12:38:09,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2023-11-17 12:38:09,301 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2023-11-17 12:38:09,301 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 101 flow [2023-11-17 12:38:09,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:09,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:38:09,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:38:09,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 12:38:09,301 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:38:09,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:38:09,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1440643665, now seen corresponding path program 8 times [2023-11-17 12:38:09,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:38:09,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956858596] [2023-11-17 12:38:09,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:38:09,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:38:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:38:09,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:38:09,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:38:09,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956858596] [2023-11-17 12:38:09,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956858596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:38:09,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:38:09,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 12:38:09,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658558594] [2023-11-17 12:38:09,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:38:09,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:38:09,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:38:09,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:38:09,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:38:09,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2023-11-17 12:38:09,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 26 transitions, 101 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:09,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:38:09,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2023-11-17 12:38:09,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:38:09,427 INFO L124 PetriNetUnfolderBase]: 29/72 cut-off events. [2023-11-17 12:38:09,427 INFO L125 PetriNetUnfolderBase]: For 40/48 co-relation queries the response was YES. [2023-11-17 12:38:09,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 72 events. 29/72 cut-off events. For 40/48 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 170 event pairs, 2 based on Foata normal form. 8/80 useless extension candidates. Maximal degree in co-relation 164. Up to 26 conditions per place. [2023-11-17 12:38:09,427 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2023-11-17 12:38:09,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 25 transitions, 134 flow [2023-11-17 12:38:09,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:38:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:38:09,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2023-11-17 12:38:09,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37337662337662336 [2023-11-17 12:38:09,428 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 115 transitions. [2023-11-17 12:38:09,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 115 transitions. [2023-11-17 12:38:09,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:38:09,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 115 transitions. [2023-11-17 12:38:09,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:09,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:09,430 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:09,430 INFO L175 Difference]: Start difference. First operand has 43 places, 26 transitions, 101 flow. Second operand 7 states and 115 transitions. [2023-11-17 12:38:09,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 25 transitions, 134 flow [2023-11-17 12:38:09,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 113 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-11-17 12:38:09,430 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-11-17 12:38:09,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-11-17 12:38:09,431 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-11-17 12:38:09,431 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-11-17 12:38:09,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:38:09,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 12:38:09,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 12:38:09,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 12:38:09,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 12:38:09,434 INFO L445 BasicCegarLoop]: Path program histogram: [8] [2023-11-17 12:38:09,436 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 12:38:09,436 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 12:38:09,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:38:09 BasicIcfg [2023-11-17 12:38:09,438 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 12:38:09,439 INFO L158 Benchmark]: Toolchain (without parser) took 3436.74ms. Allocated memory was 234.9MB in the beginning and 294.6MB in the end (delta: 59.8MB). Free memory was 184.3MB in the beginning and 143.9MB in the end (delta: 40.4MB). Peak memory consumption was 101.2MB. Max. memory is 8.0GB. [2023-11-17 12:38:09,439 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 192.9MB. Free memory was 145.1MB in the beginning and 145.0MB in the end (delta: 136.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:38:09,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.83ms. Allocated memory is still 234.9MB. Free memory was 184.0MB in the beginning and 172.7MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-11-17 12:38:09,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.85ms. Allocated memory is still 234.9MB. Free memory was 172.7MB in the beginning and 170.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:38:09,440 INFO L158 Benchmark]: Boogie Preprocessor took 25.07ms. Allocated memory is still 234.9MB. Free memory was 170.8MB in the beginning and 169.6MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 12:38:09,440 INFO L158 Benchmark]: RCFGBuilder took 408.56ms. Allocated memory is still 234.9MB. Free memory was 169.6MB in the beginning and 198.5MB in the end (delta: -28.9MB). Peak memory consumption was 24.0MB. Max. memory is 8.0GB. [2023-11-17 12:38:09,440 INFO L158 Benchmark]: TraceAbstraction took 2735.18ms. Allocated memory was 234.9MB in the beginning and 294.6MB in the end (delta: 59.8MB). Free memory was 197.5MB in the beginning and 143.9MB in the end (delta: 53.5MB). Peak memory consumption was 112.8MB. Max. memory is 8.0GB. [2023-11-17 12:38:09,441 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 192.9MB. Free memory was 145.1MB in the beginning and 145.0MB in the end (delta: 136.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 229.83ms. Allocated memory is still 234.9MB. Free memory was 184.0MB in the beginning and 172.7MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.85ms. Allocated memory is still 234.9MB. Free memory was 172.7MB in the beginning and 170.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.07ms. Allocated memory is still 234.9MB. Free memory was 170.8MB in the beginning and 169.6MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 408.56ms. Allocated memory is still 234.9MB. Free memory was 169.6MB in the beginning and 198.5MB in the end (delta: -28.9MB). Peak memory consumption was 24.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2735.18ms. Allocated memory was 234.9MB in the beginning and 294.6MB in the end (delta: 59.8MB). Free memory was 197.5MB in the beginning and 143.9MB in the end (delta: 53.5MB). Peak memory consumption was 112.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.3s, 39 PlacesBefore, 30 PlacesAfterwards, 32 TransitionsBefore, 23 TransitionsAfterwards, 374 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 1091 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 761, independent: 689, independent conditional: 0, independent unconditional: 689, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 364, independent: 322, independent conditional: 0, independent unconditional: 322, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 364, independent: 314, independent conditional: 0, independent unconditional: 314, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 50, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 105, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 761, independent: 367, independent conditional: 0, independent unconditional: 367, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 364, unknown conditional: 0, unknown unconditional: 364] , Statistics on independence cache: Total cache size (in pairs): 166, Positive cache size: 146, Positive conditional cache size: 0, Positive unconditional cache size: 146, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 116]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 62 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 347 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 347 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 928 IncrementalHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 4 mSDtfsCounter, 928 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=2, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 522 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 12:38:09,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...