/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:28:48,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:28:48,389 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:28:48,405 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:28:48,406 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:28:48,406 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:28:48,406 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:28:48,406 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:28:48,407 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:28:48,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:28:48,407 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:28:48,407 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:28:48,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:28:48,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:28:48,408 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:28:48,408 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:28:48,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:28:48,412 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:28:48,412 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:28:48,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:28:48,413 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:28:48,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:28:48,414 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:28:48,414 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:28:48,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:28:48,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:28:48,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:28:48,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:28:48,415 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:28:48,415 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:28:48,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:28:48,415 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:28:48,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:28:48,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:28:48,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:28:48,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:28:48,594 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:28:48,594 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:28:48,595 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.i [2023-11-17 11:28:49,660 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:28:49,886 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:28:49,886 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.i [2023-11-17 11:28:49,902 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b514d9ab/c6ca522edf484ae18fcb41d3bb4ee22d/FLAG89b7a8b47 [2023-11-17 11:28:49,913 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b514d9ab/c6ca522edf484ae18fcb41d3bb4ee22d [2023-11-17 11:28:49,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:28:49,916 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:28:49,920 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:28:49,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:28:49,924 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:28:49,925 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:28:49" (1/1) ... [2023-11-17 11:28:49,925 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184b039c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:49, skipping insertion in model container [2023-11-17 11:28:49,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:28:49" (1/1) ... [2023-11-17 11:28:49,965 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:28:50,111 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.i[945,958] [2023-11-17 11:28:50,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:28:50,237 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:28:50,247 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.i[945,958] [2023-11-17 11:28:50,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:28:50,304 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:28:50,305 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:28:50,309 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:28:50,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:50 WrapperNode [2023-11-17 11:28:50,311 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:28:50,312 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:28:50,312 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:28:50,312 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:28:50,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:50" (1/1) ... [2023-11-17 11:28:50,329 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:50" (1/1) ... [2023-11-17 11:28:50,342 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-11-17 11:28:50,343 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:28:50,343 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:28:50,343 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:28:50,343 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:28:50,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:50" (1/1) ... [2023-11-17 11:28:50,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:50" (1/1) ... [2023-11-17 11:28:50,354 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:50" (1/1) ... [2023-11-17 11:28:50,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:50" (1/1) ... [2023-11-17 11:28:50,358 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:50" (1/1) ... [2023-11-17 11:28:50,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:50" (1/1) ... [2023-11-17 11:28:50,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:50" (1/1) ... [2023-11-17 11:28:50,361 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:50" (1/1) ... [2023-11-17 11:28:50,363 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:28:50,363 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:28:50,363 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:28:50,363 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:28:50,364 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:50" (1/1) ... [2023-11-17 11:28:50,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:28:50,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:28:50,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 11:28:50,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 11:28:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:28:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:28:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:28:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:28:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:28:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 11:28:50,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 11:28:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 11:28:50,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 11:28:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 11:28:50,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 11:28:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:28:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:28:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:28:50,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:28:50,429 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:28:50,536 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:28:50,538 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:28:50,831 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:28:50,925 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:28:50,925 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:28:50,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:28:50 BoogieIcfgContainer [2023-11-17 11:28:50,927 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:28:50,928 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:28:50,928 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:28:50,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:28:50,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:28:49" (1/3) ... [2023-11-17 11:28:50,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4044d01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:28:50, skipping insertion in model container [2023-11-17 11:28:50,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:50" (2/3) ... [2023-11-17 11:28:50,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4044d01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:28:50, skipping insertion in model container [2023-11-17 11:28:50,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:28:50" (3/3) ... [2023-11-17 11:28:50,949 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_tso.i [2023-11-17 11:28:50,973 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:28:50,974 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:28:50,974 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:28:51,036 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:28:51,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2023-11-17 11:28:51,095 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2023-11-17 11:28:51,095 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:28:51,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-17 11:28:51,100 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2023-11-17 11:28:51,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2023-11-17 11:28:51,110 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:28:51,125 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 32 transitions, 73 flow [2023-11-17 11:28:51,127 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 32 transitions, 73 flow [2023-11-17 11:28:51,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 32 transitions, 73 flow [2023-11-17 11:28:51,151 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2023-11-17 11:28:51,151 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:28:51,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 32 events. 0/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-17 11:28:51,154 INFO L119 LiptonReduction]: Number of co-enabled transitions 576 [2023-11-17 11:28:51,519 INFO L134 LiptonReduction]: Checked pairs total: 919 [2023-11-17 11:28:51,519 INFO L136 LiptonReduction]: Total number of compositions: 15 [2023-11-17 11:28:51,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:28:51,552 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;@c457e5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:28:51,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 11:28:51,558 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:28:51,558 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-17 11:28:51,558 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:28:51,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:51,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:51,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:28:51,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:51,564 INFO L85 PathProgramCache]: Analyzing trace with hash -531137979, now seen corresponding path program 1 times [2023-11-17 11:28:51,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:51,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811954452] [2023-11-17 11:28:51,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:51,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:51,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:28:51,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:51,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811954452] [2023-11-17 11:28:51,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811954452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:51,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:51,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:28:51,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334270404] [2023-11-17 11:28:51,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:51,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:28:51,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:52,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:28:52,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:28:52,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2023-11-17 11:28:52,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:52,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:52,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2023-11-17 11:28:52,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:52,154 INFO L124 PetriNetUnfolderBase]: 263/464 cut-off events. [2023-11-17 11:28:52,154 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-17 11:28:52,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 464 events. 263/464 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1966 event pairs, 55 based on Foata normal form. 16/480 useless extension candidates. Maximal degree in co-relation 912. Up to 341 conditions per place. [2023-11-17 11:28:52,161 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 25 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-11-17 11:28:52,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 125 flow [2023-11-17 11:28:52,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:28:52,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:28:52,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2023-11-17 11:28:52,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911949685534591 [2023-11-17 11:28:52,173 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 94 transitions. [2023-11-17 11:28:52,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 94 transitions. [2023-11-17 11:28:52,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:52,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 94 transitions. [2023-11-17 11:28:52,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:52,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:52,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:52,186 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 94 transitions. [2023-11-17 11:28:52,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 125 flow [2023-11-17 11:28:52,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 120 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:28:52,190 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2023-11-17 11:28:52,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-11-17 11:28:52,194 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-11-17 11:28:52,195 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2023-11-17 11:28:52,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:52,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:52,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:52,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:28:52,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:28:52,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:52,197 INFO L85 PathProgramCache]: Analyzing trace with hash 714591910, now seen corresponding path program 1 times [2023-11-17 11:28:52,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:52,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675458193] [2023-11-17 11:28:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:52,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:52,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:28:52,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:52,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675458193] [2023-11-17 11:28:52,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675458193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:52,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:52,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:28:52,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464180845] [2023-11-17 11:28:52,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:52,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:52,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:52,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:52,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:52,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2023-11-17 11:28:52,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:52,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:52,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2023-11-17 11:28:52,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:52,456 INFO L124 PetriNetUnfolderBase]: 354/559 cut-off events. [2023-11-17 11:28:52,457 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-17 11:28:52,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 559 events. 354/559 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1885 event pairs, 111 based on Foata normal form. 12/571 useless extension candidates. Maximal degree in co-relation 1274. Up to 400 conditions per place. [2023-11-17 11:28:52,462 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-11-17 11:28:52,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 24 transitions, 113 flow [2023-11-17 11:28:52,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:28:52,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:28:52,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2023-11-17 11:28:52,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345911949685535 [2023-11-17 11:28:52,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 85 transitions. [2023-11-17 11:28:52,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 85 transitions. [2023-11-17 11:28:52,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:52,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 85 transitions. [2023-11-17 11:28:52,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:52,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:52,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:52,470 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states and 85 transitions. [2023-11-17 11:28:52,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 24 transitions, 113 flow [2023-11-17 11:28:52,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 24 transitions, 107 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:28:52,472 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 52 flow [2023-11-17 11:28:52,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-11-17 11:28:52,473 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-17 11:28:52,473 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 52 flow [2023-11-17 11:28:52,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:52,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:52,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:52,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:28:52,476 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:28:52,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:52,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1662095492, now seen corresponding path program 1 times [2023-11-17 11:28:52,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:52,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994643497] [2023-11-17 11:28:52,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:52,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:28:52,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:52,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994643497] [2023-11-17 11:28:52,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994643497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:52,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:52,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:28:52,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373874260] [2023-11-17 11:28:52,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:52,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:52,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:52,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:52,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:52,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2023-11-17 11:28:52,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:52,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:52,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2023-11-17 11:28:52,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:52,703 INFO L124 PetriNetUnfolderBase]: 488/777 cut-off events. [2023-11-17 11:28:52,704 INFO L125 PetriNetUnfolderBase]: For 222/222 co-relation queries the response was YES. [2023-11-17 11:28:52,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1792 conditions, 777 events. 488/777 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3362 event pairs, 63 based on Foata normal form. 36/813 useless extension candidates. Maximal degree in co-relation 1780. Up to 301 conditions per place. [2023-11-17 11:28:52,708 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 38 selfloop transitions, 9 changer transitions 2/49 dead transitions. [2023-11-17 11:28:52,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 49 transitions, 237 flow [2023-11-17 11:28:52,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:28:52,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:28:52,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2023-11-17 11:28:52,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509433962264151 [2023-11-17 11:28:52,712 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 146 transitions. [2023-11-17 11:28:52,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 146 transitions. [2023-11-17 11:28:52,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:52,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 146 transitions. [2023-11-17 11:28:52,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:52,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:52,716 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:52,716 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 52 flow. Second operand 5 states and 146 transitions. [2023-11-17 11:28:52,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 49 transitions, 237 flow [2023-11-17 11:28:52,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 49 transitions, 227 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:28:52,719 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 111 flow [2023-11-17 11:28:52,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=111, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2023-11-17 11:28:52,720 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-11-17 11:28:52,720 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 111 flow [2023-11-17 11:28:52,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:52,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:52,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:52,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:28:52,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:28:52,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:52,721 INFO L85 PathProgramCache]: Analyzing trace with hash 677513766, now seen corresponding path program 2 times [2023-11-17 11:28:52,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:52,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546230555] [2023-11-17 11:28:52,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:52,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:28:52,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:52,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546230555] [2023-11-17 11:28:52,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546230555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:52,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:52,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:28:52,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264439275] [2023-11-17 11:28:52,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:52,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:52,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:52,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:52,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:52,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2023-11-17 11:28:52,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:52,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:52,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2023-11-17 11:28:52,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:52,999 INFO L124 PetriNetUnfolderBase]: 518/825 cut-off events. [2023-11-17 11:28:52,999 INFO L125 PetriNetUnfolderBase]: For 774/774 co-relation queries the response was YES. [2023-11-17 11:28:53,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2415 conditions, 825 events. 518/825 cut-off events. For 774/774 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3415 event pairs, 57 based on Foata normal form. 12/837 useless extension candidates. Maximal degree in co-relation 2400. Up to 449 conditions per place. [2023-11-17 11:28:53,004 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 46 selfloop transitions, 11 changer transitions 1/58 dead transitions. [2023-11-17 11:28:53,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 58 transitions, 374 flow [2023-11-17 11:28:53,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:28:53,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:28:53,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2023-11-17 11:28:53,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2023-11-17 11:28:53,006 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 140 transitions. [2023-11-17 11:28:53,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 140 transitions. [2023-11-17 11:28:53,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:53,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 140 transitions. [2023-11-17 11:28:53,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,008 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,008 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 111 flow. Second operand 5 states and 140 transitions. [2023-11-17 11:28:53,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 58 transitions, 374 flow [2023-11-17 11:28:53,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 58 transitions, 374 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:28:53,012 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 207 flow [2023-11-17 11:28:53,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=207, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2023-11-17 11:28:53,013 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-11-17 11:28:53,013 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 207 flow [2023-11-17 11:28:53,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:53,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:53,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:28:53,014 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:28:53,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:53,014 INFO L85 PathProgramCache]: Analyzing trace with hash 660230080, now seen corresponding path program 1 times [2023-11-17 11:28:53,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:53,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484795784] [2023-11-17 11:28:53,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:53,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:28:53,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:53,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484795784] [2023-11-17 11:28:53,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484795784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:53,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:53,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:28:53,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446561627] [2023-11-17 11:28:53,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:53,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:28:53,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:53,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:28:53,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:28:53,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2023-11-17 11:28:53,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:53,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2023-11-17 11:28:53,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:53,222 INFO L124 PetriNetUnfolderBase]: 466/753 cut-off events. [2023-11-17 11:28:53,223 INFO L125 PetriNetUnfolderBase]: For 1765/1765 co-relation queries the response was YES. [2023-11-17 11:28:53,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2630 conditions, 753 events. 466/753 cut-off events. For 1765/1765 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3099 event pairs, 143 based on Foata normal form. 32/785 useless extension candidates. Maximal degree in co-relation 2610. Up to 282 conditions per place. [2023-11-17 11:28:53,228 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 29 selfloop transitions, 6 changer transitions 16/51 dead transitions. [2023-11-17 11:28:53,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 420 flow [2023-11-17 11:28:53,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:28:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:28:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2023-11-17 11:28:53,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235849056603774 [2023-11-17 11:28:53,229 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 111 transitions. [2023-11-17 11:28:53,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 111 transitions. [2023-11-17 11:28:53,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:53,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 111 transitions. [2023-11-17 11:28:53,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,231 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,231 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 207 flow. Second operand 4 states and 111 transitions. [2023-11-17 11:28:53,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 420 flow [2023-11-17 11:28:53,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 401 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-17 11:28:53,237 INFO L231 Difference]: Finished difference. Result has 44 places, 26 transitions, 181 flow [2023-11-17 11:28:53,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2023-11-17 11:28:53,239 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-11-17 11:28:53,240 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 181 flow [2023-11-17 11:28:53,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:53,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:53,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:28:53,241 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:28:53,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:53,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1627441480, now seen corresponding path program 1 times [2023-11-17 11:28:53,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:53,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752422930] [2023-11-17 11:28:53,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:53,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:28:53,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:53,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752422930] [2023-11-17 11:28:53,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752422930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:53,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:53,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:28:53,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842440103] [2023-11-17 11:28:53,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:53,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:28:53,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:53,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:28:53,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:28:53,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2023-11-17 11:28:53,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:53,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2023-11-17 11:28:53,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:53,405 INFO L124 PetriNetUnfolderBase]: 239/408 cut-off events. [2023-11-17 11:28:53,406 INFO L125 PetriNetUnfolderBase]: For 1450/1450 co-relation queries the response was YES. [2023-11-17 11:28:53,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 408 events. 239/408 cut-off events. For 1450/1450 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1373 event pairs, 111 based on Foata normal form. 18/426 useless extension candidates. Maximal degree in co-relation 1444. Up to 212 conditions per place. [2023-11-17 11:28:53,407 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 19 selfloop transitions, 3 changer transitions 13/35 dead transitions. [2023-11-17 11:28:53,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 35 transitions, 285 flow [2023-11-17 11:28:53,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:28:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:28:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2023-11-17 11:28:53,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49528301886792453 [2023-11-17 11:28:53,409 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 105 transitions. [2023-11-17 11:28:53,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 105 transitions. [2023-11-17 11:28:53,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:53,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 105 transitions. [2023-11-17 11:28:53,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,410 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,410 INFO L175 Difference]: Start difference. First operand has 44 places, 26 transitions, 181 flow. Second operand 4 states and 105 transitions. [2023-11-17 11:28:53,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 35 transitions, 285 flow [2023-11-17 11:28:53,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 35 transitions, 238 flow, removed 15 selfloop flow, removed 5 redundant places. [2023-11-17 11:28:53,413 INFO L231 Difference]: Finished difference. Result has 44 places, 17 transitions, 94 flow [2023-11-17 11:28:53,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=44, PETRI_TRANSITIONS=17} [2023-11-17 11:28:53,413 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-11-17 11:28:53,413 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 17 transitions, 94 flow [2023-11-17 11:28:53,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:53,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:53,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:28:53,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:28:53,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:53,414 INFO L85 PathProgramCache]: Analyzing trace with hash 365926349, now seen corresponding path program 1 times [2023-11-17 11:28:53,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:53,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104612767] [2023-11-17 11:28:53,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:53,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:28:53,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:53,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104612767] [2023-11-17 11:28:53,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104612767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:53,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:53,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:28:53,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523819169] [2023-11-17 11:28:53,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:53,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:28:53,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:53,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:28:53,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:28:53,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2023-11-17 11:28:53,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 17 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:53,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2023-11-17 11:28:53,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:53,490 INFO L124 PetriNetUnfolderBase]: 45/97 cut-off events. [2023-11-17 11:28:53,490 INFO L125 PetriNetUnfolderBase]: For 264/270 co-relation queries the response was YES. [2023-11-17 11:28:53,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 97 events. 45/97 cut-off events. For 264/270 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 253 event pairs, 19 based on Foata normal form. 6/99 useless extension candidates. Maximal degree in co-relation 332. Up to 75 conditions per place. [2023-11-17 11:28:53,491 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 20 selfloop transitions, 4 changer transitions 0/25 dead transitions. [2023-11-17 11:28:53,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 25 transitions, 183 flow [2023-11-17 11:28:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:28:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:28:53,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2023-11-17 11:28:53,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345911949685535 [2023-11-17 11:28:53,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 85 transitions. [2023-11-17 11:28:53,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 85 transitions. [2023-11-17 11:28:53,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:53,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 85 transitions. [2023-11-17 11:28:53,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,493 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,493 INFO L175 Difference]: Start difference. First operand has 44 places, 17 transitions, 94 flow. Second operand 3 states and 85 transitions. [2023-11-17 11:28:53,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 25 transitions, 183 flow [2023-11-17 11:28:53,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 122 flow, removed 9 selfloop flow, removed 15 redundant places. [2023-11-17 11:28:53,494 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 78 flow [2023-11-17 11:28:53,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-11-17 11:28:53,495 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-11-17 11:28:53,495 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 78 flow [2023-11-17 11:28:53,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:53,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:53,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:28:53,495 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:28:53,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:53,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1602948371, now seen corresponding path program 1 times [2023-11-17 11:28:53,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:53,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099128680] [2023-11-17 11:28:53,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:53,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:28:53,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:53,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099128680] [2023-11-17 11:28:53,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099128680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:53,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:53,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:28:53,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387039671] [2023-11-17 11:28:53,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:53,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:53,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:53,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:53,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:53,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2023-11-17 11:28:53,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:53,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2023-11-17 11:28:53,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:53,639 INFO L124 PetriNetUnfolderBase]: 25/65 cut-off events. [2023-11-17 11:28:53,639 INFO L125 PetriNetUnfolderBase]: For 19/25 co-relation queries the response was YES. [2023-11-17 11:28:53,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 65 events. 25/65 cut-off events. For 19/25 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 121 event pairs, 7 based on Foata normal form. 9/72 useless extension candidates. Maximal degree in co-relation 198. Up to 32 conditions per place. [2023-11-17 11:28:53,640 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 21 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2023-11-17 11:28:53,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 165 flow [2023-11-17 11:28:53,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:28:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:28:53,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2023-11-17 11:28:53,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141509433962265 [2023-11-17 11:28:53,641 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 109 transitions. [2023-11-17 11:28:53,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 109 transitions. [2023-11-17 11:28:53,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:53,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 109 transitions. [2023-11-17 11:28:53,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,642 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,642 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 78 flow. Second operand 4 states and 109 transitions. [2023-11-17 11:28:53,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 165 flow [2023-11-17 11:28:53,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:28:53,643 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 114 flow [2023-11-17 11:28:53,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-11-17 11:28:53,643 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-11-17 11:28:53,643 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 114 flow [2023-11-17 11:28:53,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:53,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:53,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:28:53,644 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:28:53,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:53,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1848204375, now seen corresponding path program 1 times [2023-11-17 11:28:53,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:53,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413600041] [2023-11-17 11:28:53,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:53,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:28:53,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:53,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413600041] [2023-11-17 11:28:53,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413600041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:53,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:53,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:28:53,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759448839] [2023-11-17 11:28:53,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:53,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:28:53,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:53,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:28:53,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:28:53,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2023-11-17 11:28:53,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 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 11:28:53,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:53,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2023-11-17 11:28:53,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:53,735 INFO L124 PetriNetUnfolderBase]: 17/49 cut-off events. [2023-11-17 11:28:53,735 INFO L125 PetriNetUnfolderBase]: For 54/66 co-relation queries the response was YES. [2023-11-17 11:28:53,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 49 events. 17/49 cut-off events. For 54/66 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 4 based on Foata normal form. 8/56 useless extension candidates. Maximal degree in co-relation 167. Up to 22 conditions per place. [2023-11-17 11:28:53,735 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 18 selfloop transitions, 10 changer transitions 0/29 dead transitions. [2023-11-17 11:28:53,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 189 flow [2023-11-17 11:28:53,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:28:53,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:28:53,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2023-11-17 11:28:53,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867924528301887 [2023-11-17 11:28:53,736 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 129 transitions. [2023-11-17 11:28:53,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 129 transitions. [2023-11-17 11:28:53,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:53,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 129 transitions. [2023-11-17 11:28:53,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,738 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,738 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 114 flow. Second operand 5 states and 129 transitions. [2023-11-17 11:28:53,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 189 flow [2023-11-17 11:28:53,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 162 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-17 11:28:53,739 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 118 flow [2023-11-17 11:28:53,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2023-11-17 11:28:53,739 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-11-17 11:28:53,739 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 118 flow [2023-11-17 11:28:53,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 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 11:28:53,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:53,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:53,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:28:53,740 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:28:53,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:53,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1993062726, now seen corresponding path program 1 times [2023-11-17 11:28:53,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:53,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415043982] [2023-11-17 11:28:53,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:53,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:53,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:28:53,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:53,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415043982] [2023-11-17 11:28:53,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415043982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:53,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:53,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:28:53,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129639128] [2023-11-17 11:28:53,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:53,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:53,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:53,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:53,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:53,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2023-11-17 11:28:53,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:53,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2023-11-17 11:28:53,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:53,862 INFO L124 PetriNetUnfolderBase]: 21/55 cut-off events. [2023-11-17 11:28:53,862 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2023-11-17 11:28:53,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 55 events. 21/55 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 5 based on Foata normal form. 1/56 useless extension candidates. Maximal degree in co-relation 189. Up to 32 conditions per place. [2023-11-17 11:28:53,862 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-11-17 11:28:53,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 208 flow [2023-11-17 11:28:53,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:28:53,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:28:53,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2023-11-17 11:28:53,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49528301886792453 [2023-11-17 11:28:53,864 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 105 transitions. [2023-11-17 11:28:53,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 105 transitions. [2023-11-17 11:28:53,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:53,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 105 transitions. [2023-11-17 11:28:53,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,865 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,865 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 118 flow. Second operand 4 states and 105 transitions. [2023-11-17 11:28:53,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 208 flow [2023-11-17 11:28:53,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 176 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-17 11:28:53,866 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2023-11-17 11:28:53,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2023-11-17 11:28:53,867 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-11-17 11:28:53,868 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2023-11-17 11:28:53,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:53,870 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 11:28:53,870 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 11:28:53,870 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 11:28:53,870 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 11:28:53,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 11:28:53,871 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:53,873 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:28:53,873 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:28:53,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:28:53 BasicIcfg [2023-11-17 11:28:53,878 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:28:53,878 INFO L158 Benchmark]: Toolchain (without parser) took 3962.11ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 135.8MB in the beginning and 198.9MB in the end (delta: -63.1MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-11-17 11:28:53,878 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 176.2MB. Free memory is still 128.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:28:53,878 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.16ms. Allocated memory is still 176.2MB. Free memory was 135.8MB in the beginning and 115.5MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 11:28:53,879 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.80ms. Allocated memory is still 176.2MB. Free memory was 115.2MB in the beginning and 113.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:28:53,879 INFO L158 Benchmark]: Boogie Preprocessor took 19.41ms. Allocated memory is still 176.2MB. Free memory was 113.4MB in the beginning and 111.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:28:53,879 INFO L158 Benchmark]: RCFGBuilder took 563.71ms. Allocated memory is still 176.2MB. Free memory was 111.7MB in the beginning and 90.4MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-17 11:28:53,879 INFO L158 Benchmark]: TraceAbstraction took 2949.48ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 89.7MB in the beginning and 198.9MB in the end (delta: -109.2MB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:28:53,880 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 176.2MB. Free memory is still 128.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 391.16ms. Allocated memory is still 176.2MB. Free memory was 135.8MB in the beginning and 115.5MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.80ms. Allocated memory is still 176.2MB. Free memory was 115.2MB in the beginning and 113.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.41ms. Allocated memory is still 176.2MB. Free memory was 113.4MB in the beginning and 111.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 563.71ms. Allocated memory is still 176.2MB. Free memory was 111.7MB in the beginning and 90.4MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2949.48ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 89.7MB in the beginning and 198.9MB in the end (delta: -109.2MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4s, 42 PlacesBefore, 27 PlacesAfterwards, 32 TransitionsBefore, 17 TransitionsAfterwards, 576 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 15 TotalNumberOfCompositions, 919 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 571, independent: 524, independent conditional: 0, independent unconditional: 524, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 394, independent: 369, independent conditional: 0, independent unconditional: 369, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 394, independent: 360, independent conditional: 0, independent unconditional: 360, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 34, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 73, independent: 23, independent conditional: 0, independent unconditional: 23, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 571, independent: 155, independent conditional: 0, independent unconditional: 155, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 394, unknown conditional: 0, unknown unconditional: 394] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 65, Positive conditional cache size: 0, Positive unconditional cache size: 65, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 62 locations, 4 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: 2.8s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 363 IncrementalHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 6 mSDtfsCounter, 363 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=207occurred in iteration=4, InterpolantAutomatonStates: 40, 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, 1.1s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 357 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 11:28:53,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...