/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/safe008_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:28:31,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:28:31,943 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 11:28:31,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:28:31,975 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:28:31,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:28:31,976 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:28:31,976 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:28:31,977 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:28:31,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:28:31,981 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:28:31,981 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:28:31,982 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:28:31,983 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:28:31,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:28:31,983 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:28:31,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:28:31,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:28:31,984 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:28:31,984 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:28:31,984 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:28:31,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:28:31,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:28:31,986 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:28:31,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:28:31,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:28:31,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:28:31,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:28:31,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:28:31,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:28:31,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:28:31,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:28:31,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:28:32,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:28:32,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:28:32,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:28:32,229 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:28:32,229 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:28:32,230 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.i [2023-11-17 11:28:33,444 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:28:33,680 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:28:33,695 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.i [2023-11-17 11:28:33,716 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30a5b175a/d8c908e2e1ae483e96047342f6db7c63/FLAGabecfc693 [2023-11-17 11:28:33,737 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30a5b175a/d8c908e2e1ae483e96047342f6db7c63 [2023-11-17 11:28:33,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:28:33,742 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:28:33,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:28:33,745 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:28:33,749 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:28:33,750 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:28:33" (1/1) ... [2023-11-17 11:28:33,751 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f9280c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:33, skipping insertion in model container [2023-11-17 11:28:33,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:28:33" (1/1) ... [2023-11-17 11:28:33,807 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:28:33,967 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/safe008_tso.i[945,958] [2023-11-17 11:28:34,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:28:34,158 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:28:34,170 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/safe008_tso.i[945,958] [2023-11-17 11:28:34,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:28:34,240 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:28:34,240 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:28:34,247 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:28:34,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:34 WrapperNode [2023-11-17 11:28:34,248 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:28:34,249 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:28:34,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:28:34,249 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:28:34,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:34" (1/1) ... [2023-11-17 11:28:34,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:34" (1/1) ... [2023-11-17 11:28:34,309 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-17 11:28:34,309 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:28:34,310 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:28:34,310 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:28:34,310 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:28:34,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:34" (1/1) ... [2023-11-17 11:28:34,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:34" (1/1) ... [2023-11-17 11:28:34,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:34" (1/1) ... [2023-11-17 11:28:34,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:34" (1/1) ... [2023-11-17 11:28:34,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:34" (1/1) ... [2023-11-17 11:28:34,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:34" (1/1) ... [2023-11-17 11:28:34,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:34" (1/1) ... [2023-11-17 11:28:34,346 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:34" (1/1) ... [2023-11-17 11:28:34,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:28:34,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:28:34,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:28:34,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:28:34,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:34" (1/1) ... [2023-11-17 11:28:34,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:28:34,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:28:34,388 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 11:28:34,403 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 11:28:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:28:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:28:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:28:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:28:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:28:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 11:28:34,425 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 11:28:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 11:28:34,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 11:28:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 11:28:34,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 11:28:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:28:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:28:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:28:34,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:28:34,428 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 11:28:34,587 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:28:34,589 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:28:34,785 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:28:34,925 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:28:34,925 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:28:34,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:28:34 BoogieIcfgContainer [2023-11-17 11:28:34,927 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:28:34,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:28:34,929 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:28:34,932 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:28:34,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:28:33" (1/3) ... [2023-11-17 11:28:34,933 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224b5b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:28:34, skipping insertion in model container [2023-11-17 11:28:34,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:34" (2/3) ... [2023-11-17 11:28:34,933 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224b5b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:28:34, skipping insertion in model container [2023-11-17 11:28:34,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:28:34" (3/3) ... [2023-11-17 11:28:34,936 INFO L112 eAbstractionObserver]: Analyzing ICFG safe008_tso.i [2023-11-17 11:28:34,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:28:34,949 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:28:34,949 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:28:35,003 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:28:35,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2023-11-17 11:28:35,091 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2023-11-17 11:28:35,092 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:28:35,097 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 59 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 11:28:35,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2023-11-17 11:28:35,102 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2023-11-17 11:28:35,106 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:28:35,129 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 32 transitions, 73 flow [2023-11-17 11:28:35,133 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 32 transitions, 73 flow [2023-11-17 11:28:35,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 32 transitions, 73 flow [2023-11-17 11:28:35,152 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2023-11-17 11:28:35,152 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:28:35,152 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 54 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 11:28:35,154 INFO L119 LiptonReduction]: Number of co-enabled transitions 576 [2023-11-17 11:28:35,654 INFO L134 LiptonReduction]: Checked pairs total: 936 [2023-11-17 11:28:35,654 INFO L136 LiptonReduction]: Total number of compositions: 15 [2023-11-17 11:28:35,673 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:28:35,681 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;@6d63401a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:28:35,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 11:28:35,688 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:28:35,688 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-17 11:28:35,689 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:28:35,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:35,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:35,690 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 11:28:35,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:35,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1489345267, now seen corresponding path program 1 times [2023-11-17 11:28:35,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:35,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701222126] [2023-11-17 11:28:35,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:35,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:36,168 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 11:28:36,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:36,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701222126] [2023-11-17 11:28:36,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701222126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:36,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:36,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:28:36,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24288890] [2023-11-17 11:28:36,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:36,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:28:36,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:36,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:28:36,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:28:36,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2023-11-17 11:28:36,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:36,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:36,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2023-11-17 11:28:36,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:36,422 INFO L124 PetriNetUnfolderBase]: 379/653 cut-off events. [2023-11-17 11:28:36,422 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-17 11:28:36,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 653 events. 379/653 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3110 event pairs, 161 based on Foata normal form. 25/678 useless extension candidates. Maximal degree in co-relation 1302. Up to 459 conditions per place. [2023-11-17 11:28:36,433 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 23 selfloop transitions, 5 changer transitions 0/29 dead transitions. [2023-11-17 11:28:36,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 129 flow [2023-11-17 11:28:36,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:28:36,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:28:36,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2023-11-17 11:28:36,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408805031446541 [2023-11-17 11:28:36,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 86 transitions. [2023-11-17 11:28:36,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 86 transitions. [2023-11-17 11:28:36,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:36,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 86 transitions. [2023-11-17 11:28:36,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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 11:28:36,455 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 11:28:36,455 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 11:28:36,456 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 86 transitions. [2023-11-17 11:28:36,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 129 flow [2023-11-17 11:28:36,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 124 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:28:36,461 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 69 flow [2023-11-17 11:28:36,466 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=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-11-17 11:28:36,470 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-11-17 11:28:36,471 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 69 flow [2023-11-17 11:28:36,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:36,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:36,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:36,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:28:36,471 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 11:28:36,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:36,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1074937021, now seen corresponding path program 1 times [2023-11-17 11:28:36,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:36,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30910687] [2023-11-17 11:28:36,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:36,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:36,668 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 11:28:36,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:36,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30910687] [2023-11-17 11:28:36,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30910687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:36,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:36,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:28:36,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915748476] [2023-11-17 11:28:36,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:36,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:36,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:36,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:36,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:36,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2023-11-17 11:28:36,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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 11:28:36,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:36,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2023-11-17 11:28:36,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:36,785 INFO L124 PetriNetUnfolderBase]: 353/608 cut-off events. [2023-11-17 11:28:36,785 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2023-11-17 11:28:36,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 608 events. 353/608 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2735 event pairs, 77 based on Foata normal form. 11/615 useless extension candidates. Maximal degree in co-relation 1491. Up to 309 conditions per place. [2023-11-17 11:28:36,789 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 26 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-11-17 11:28:36,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 169 flow [2023-11-17 11:28:36,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:28:36,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:28:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2023-11-17 11:28:36,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-17 11:28:36,794 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 106 transitions. [2023-11-17 11:28:36,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 106 transitions. [2023-11-17 11:28:36,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:36,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 106 transitions. [2023-11-17 11:28:36,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.5) internal successors, (106), 4 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 11:28:36,796 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 11:28:36,796 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 11:28:36,796 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 69 flow. Second operand 4 states and 106 transitions. [2023-11-17 11:28:36,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 169 flow [2023-11-17 11:28:36,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 33 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:28:36,800 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 96 flow [2023-11-17 11:28:36,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-11-17 11:28:36,801 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-11-17 11:28:36,801 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 96 flow [2023-11-17 11:28:36,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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 11:28:36,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:36,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:36,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:28:36,802 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 11:28:36,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:36,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1074937083, now seen corresponding path program 1 times [2023-11-17 11:28:36,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:36,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779462273] [2023-11-17 11:28:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:36,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:36,892 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 11:28:36,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:36,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779462273] [2023-11-17 11:28:36,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779462273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:36,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:36,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:28:36,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894189368] [2023-11-17 11:28:36,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:36,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:36,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:36,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:36,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:36,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2023-11-17 11:28:36,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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 11:28:36,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:36,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2023-11-17 11:28:36,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:36,991 INFO L124 PetriNetUnfolderBase]: 338/590 cut-off events. [2023-11-17 11:28:36,992 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2023-11-17 11:28:36,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1581 conditions, 590 events. 338/590 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2661 event pairs, 105 based on Foata normal form. 3/592 useless extension candidates. Maximal degree in co-relation 1567. Up to 379 conditions per place. [2023-11-17 11:28:36,996 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 29 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2023-11-17 11:28:36,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 37 transitions, 216 flow [2023-11-17 11:28:36,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:28:36,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:28:36,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2023-11-17 11:28:36,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188679245283019 [2023-11-17 11:28:36,998 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 110 transitions. [2023-11-17 11:28:36,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 110 transitions. [2023-11-17 11:28:36,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:36,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 110 transitions. [2023-11-17 11:28:37,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:37,001 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 11:28:37,001 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 11:28:37,001 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 96 flow. Second operand 4 states and 110 transitions. [2023-11-17 11:28:37,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 37 transitions, 216 flow [2023-11-17 11:28:37,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:28:37,004 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 119 flow [2023-11-17 11:28:37,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2023-11-17 11:28:37,005 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-11-17 11:28:37,005 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 119 flow [2023-11-17 11:28:37,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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 11:28:37,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:37,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:37,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:28:37,006 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 11:28:37,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:37,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1036690613, now seen corresponding path program 1 times [2023-11-17 11:28:37,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:37,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803132117] [2023-11-17 11:28:37,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:37,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:37,104 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 11:28:37,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:37,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803132117] [2023-11-17 11:28:37,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803132117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:37,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:37,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:28:37,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328293694] [2023-11-17 11:28:37,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:37,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:37,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:37,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:37,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:37,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2023-11-17 11:28:37,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 119 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 11:28:37,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:37,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2023-11-17 11:28:37,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:37,210 INFO L124 PetriNetUnfolderBase]: 310/555 cut-off events. [2023-11-17 11:28:37,210 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-11-17 11:28:37,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1539 conditions, 555 events. 310/555 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2500 event pairs, 64 based on Foata normal form. 9/564 useless extension candidates. Maximal degree in co-relation 1524. Up to 298 conditions per place. [2023-11-17 11:28:37,216 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 32 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2023-11-17 11:28:37,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 258 flow [2023-11-17 11:28:37,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:28:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:28:37,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2023-11-17 11:28:37,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2023-11-17 11:28:37,220 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 108 transitions. [2023-11-17 11:28:37,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 108 transitions. [2023-11-17 11:28:37,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:37,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 108 transitions. [2023-11-17 11:28:37,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:37,223 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 11:28:37,224 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 11:28:37,224 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 119 flow. Second operand 4 states and 108 transitions. [2023-11-17 11:28:37,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 258 flow [2023-11-17 11:28:37,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:28:37,229 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 173 flow [2023-11-17 11:28:37,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2023-11-17 11:28:37,230 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-11-17 11:28:37,230 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 173 flow [2023-11-17 11:28:37,231 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 11:28:37,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:37,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:37,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:28:37,231 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 11:28:37,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:37,232 INFO L85 PathProgramCache]: Analyzing trace with hash -34714630, now seen corresponding path program 1 times [2023-11-17 11:28:37,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:37,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731628800] [2023-11-17 11:28:37,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:37,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:37,369 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 11:28:37,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:37,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731628800] [2023-11-17 11:28:37,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731628800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:37,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:37,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:28:37,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140748749] [2023-11-17 11:28:37,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:37,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:37,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:37,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:37,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:37,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2023-11-17 11:28:37,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:37,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:37,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2023-11-17 11:28:37,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:37,494 INFO L124 PetriNetUnfolderBase]: 392/687 cut-off events. [2023-11-17 11:28:37,494 INFO L125 PetriNetUnfolderBase]: For 1293/1293 co-relation queries the response was YES. [2023-11-17 11:28:37,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 687 events. 392/687 cut-off events. For 1293/1293 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3440 event pairs, 78 based on Foata normal form. 22/707 useless extension candidates. Maximal degree in co-relation 2058. Up to 219 conditions per place. [2023-11-17 11:28:37,500 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 38 selfloop transitions, 19 changer transitions 2/60 dead transitions. [2023-11-17 11:28:37,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 60 transitions, 448 flow [2023-11-17 11:28:37,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:28:37,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:28:37,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2023-11-17 11:28:37,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2023-11-17 11:28:37,502 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 140 transitions. [2023-11-17 11:28:37,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 140 transitions. [2023-11-17 11:28:37,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:37,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 140 transitions. [2023-11-17 11:28:37,502 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 11:28:37,503 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 11:28:37,503 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 11:28:37,504 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 173 flow. Second operand 5 states and 140 transitions. [2023-11-17 11:28:37,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 60 transitions, 448 flow [2023-11-17 11:28:37,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:28:37,509 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 323 flow [2023-11-17 11:28:37,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=323, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2023-11-17 11:28:37,510 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-11-17 11:28:37,510 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 323 flow [2023-11-17 11:28:37,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:37,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:37,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:37,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:28:37,511 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 11:28:37,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:37,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1352101922, now seen corresponding path program 2 times [2023-11-17 11:28:37,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:37,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966003229] [2023-11-17 11:28:37,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:37,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:37,611 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 11:28:37,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:37,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966003229] [2023-11-17 11:28:37,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966003229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:37,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:37,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:28:37,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87302958] [2023-11-17 11:28:37,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:37,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:28:37,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:37,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:28:37,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:28:37,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2023-11-17 11:28:37,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 323 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 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 11:28:37,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:37,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2023-11-17 11:28:37,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:37,752 INFO L124 PetriNetUnfolderBase]: 427/776 cut-off events. [2023-11-17 11:28:37,753 INFO L125 PetriNetUnfolderBase]: For 1991/1991 co-relation queries the response was YES. [2023-11-17 11:28:37,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2670 conditions, 776 events. 427/776 cut-off events. For 1991/1991 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4221 event pairs, 111 based on Foata normal form. 18/792 useless extension candidates. Maximal degree in co-relation 2646. Up to 316 conditions per place. [2023-11-17 11:28:37,758 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 34 selfloop transitions, 6 changer transitions 15/56 dead transitions. [2023-11-17 11:28:37,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 56 transitions, 505 flow [2023-11-17 11:28:37,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:28:37,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:28:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2023-11-17 11:28:37,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2023-11-17 11:28:37,760 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 130 transitions. [2023-11-17 11:28:37,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 130 transitions. [2023-11-17 11:28:37,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:37,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 130 transitions. [2023-11-17 11:28:37,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:37,762 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 11:28:37,762 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 11:28:37,762 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 323 flow. Second operand 5 states and 130 transitions. [2023-11-17 11:28:37,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 56 transitions, 505 flow [2023-11-17 11:28:37,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 505 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:28:37,772 INFO L231 Difference]: Finished difference. Result has 50 places, 25 transitions, 216 flow [2023-11-17 11:28:37,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=50, PETRI_TRANSITIONS=25} [2023-11-17 11:28:37,775 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-11-17 11:28:37,776 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 25 transitions, 216 flow [2023-11-17 11:28:37,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 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 11:28:37,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:37,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:37,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:28:37,777 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 11:28:37,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:37,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1076147815, now seen corresponding path program 1 times [2023-11-17 11:28:37,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:37,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667848756] [2023-11-17 11:28:37,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:37,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:37,896 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 11:28:37,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:37,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667848756] [2023-11-17 11:28:37,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667848756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:37,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:37,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:28:37,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261511406] [2023-11-17 11:28:37,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:37,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:28:37,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:37,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:28:37,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:28:37,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2023-11-17 11:28:37,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 25 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:37,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:37,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2023-11-17 11:28:37,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:37,991 INFO L124 PetriNetUnfolderBase]: 231/412 cut-off events. [2023-11-17 11:28:37,991 INFO L125 PetriNetUnfolderBase]: For 1666/1666 co-relation queries the response was YES. [2023-11-17 11:28:37,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1494 conditions, 412 events. 231/412 cut-off events. For 1666/1666 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1586 event pairs, 85 based on Foata normal form. 18/430 useless extension candidates. Maximal degree in co-relation 1466. Up to 188 conditions per place. [2023-11-17 11:28:37,994 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 22 selfloop transitions, 4 changer transitions 14/40 dead transitions. [2023-11-17 11:28:37,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 40 transitions, 363 flow [2023-11-17 11:28:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:28:37,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:28:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2023-11-17 11:28:37,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4679245283018868 [2023-11-17 11:28:37,995 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 124 transitions. [2023-11-17 11:28:37,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 124 transitions. [2023-11-17 11:28:37,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:37,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 124 transitions. [2023-11-17 11:28:37,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:37,997 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 11:28:37,997 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 11:28:37,997 INFO L175 Difference]: Start difference. First operand has 50 places, 25 transitions, 216 flow. Second operand 5 states and 124 transitions. [2023-11-17 11:28:37,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 40 transitions, 363 flow [2023-11-17 11:28:38,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 272 flow, removed 15 selfloop flow, removed 11 redundant places. [2023-11-17 11:28:38,002 INFO L231 Difference]: Finished difference. Result has 45 places, 17 transitions, 97 flow [2023-11-17 11:28:38,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=45, PETRI_TRANSITIONS=17} [2023-11-17 11:28:38,003 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2023-11-17 11:28:38,003 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 17 transitions, 97 flow [2023-11-17 11:28:38,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:38,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:38,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:38,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:28:38,007 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 11:28:38,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:38,008 INFO L85 PathProgramCache]: Analyzing trace with hash 747669801, now seen corresponding path program 1 times [2023-11-17 11:28:38,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:38,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647171072] [2023-11-17 11:28:38,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:38,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:38,134 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 11:28:38,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:38,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647171072] [2023-11-17 11:28:38,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647171072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:38,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:38,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:28:38,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093344223] [2023-11-17 11:28:38,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:38,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:38,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:38,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:38,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:38,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2023-11-17 11:28:38,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 17 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:38,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:38,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2023-11-17 11:28:38,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:38,210 INFO L124 PetriNetUnfolderBase]: 83/174 cut-off events. [2023-11-17 11:28:38,210 INFO L125 PetriNetUnfolderBase]: For 376/376 co-relation queries the response was YES. [2023-11-17 11:28:38,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 174 events. 83/174 cut-off events. For 376/376 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 592 event pairs, 17 based on Foata normal form. 4/176 useless extension candidates. Maximal degree in co-relation 571. Up to 80 conditions per place. [2023-11-17 11:28:38,212 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 24 selfloop transitions, 4 changer transitions 5/34 dead transitions. [2023-11-17 11:28:38,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 34 transitions, 247 flow [2023-11-17 11:28:38,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:28:38,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:28:38,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2023-11-17 11:28:38,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424528301886793 [2023-11-17 11:28:38,214 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 115 transitions. [2023-11-17 11:28:38,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 115 transitions. [2023-11-17 11:28:38,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:38,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 115 transitions. [2023-11-17 11:28:38,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:38,218 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 11:28:38,219 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 11:28:38,219 INFO L175 Difference]: Start difference. First operand has 45 places, 17 transitions, 97 flow. Second operand 4 states and 115 transitions. [2023-11-17 11:28:38,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 34 transitions, 247 flow [2023-11-17 11:28:38,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 180 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-11-17 11:28:38,220 INFO L231 Difference]: Finished difference. Result has 38 places, 19 transitions, 86 flow [2023-11-17 11:28:38,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=38, PETRI_TRANSITIONS=19} [2023-11-17 11:28:38,223 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-11-17 11:28:38,223 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 19 transitions, 86 flow [2023-11-17 11:28:38,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:38,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:38,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:38,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:28:38,224 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 11:28:38,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:38,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1680604355, now seen corresponding path program 1 times [2023-11-17 11:28:38,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:38,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993171586] [2023-11-17 11:28:38,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:38,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:38,353 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 11:28:38,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:38,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993171586] [2023-11-17 11:28:38,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993171586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:38,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:38,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:28:38,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601531149] [2023-11-17 11:28:38,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:38,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:28:38,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:38,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:28:38,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:28:38,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2023-11-17 11:28:38,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 19 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:38,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:38,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2023-11-17 11:28:38,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:38,445 INFO L124 PetriNetUnfolderBase]: 53/122 cut-off events. [2023-11-17 11:28:38,445 INFO L125 PetriNetUnfolderBase]: For 105/111 co-relation queries the response was YES. [2023-11-17 11:28:38,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 122 events. 53/122 cut-off events. For 105/111 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 347 event pairs, 14 based on Foata normal form. 9/131 useless extension candidates. Maximal degree in co-relation 417. Up to 47 conditions per place. [2023-11-17 11:28:38,446 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 22 selfloop transitions, 6 changer transitions 10/39 dead transitions. [2023-11-17 11:28:38,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 248 flow [2023-11-17 11:28:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:28:38,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:28:38,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2023-11-17 11:28:38,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2023-11-17 11:28:38,448 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 140 transitions. [2023-11-17 11:28:38,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 140 transitions. [2023-11-17 11:28:38,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:38,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 140 transitions. [2023-11-17 11:28:38,449 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 11:28:38,449 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 11:28:38,450 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 11:28:38,450 INFO L175 Difference]: Start difference. First operand has 38 places, 19 transitions, 86 flow. Second operand 5 states and 140 transitions. [2023-11-17 11:28:38,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 248 flow [2023-11-17 11:28:38,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 239 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 11:28:38,451 INFO L231 Difference]: Finished difference. Result has 42 places, 19 transitions, 104 flow [2023-11-17 11:28:38,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=42, PETRI_TRANSITIONS=19} [2023-11-17 11:28:38,452 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-11-17 11:28:38,452 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 19 transitions, 104 flow [2023-11-17 11:28:38,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:38,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:38,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:38,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:28:38,457 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 11:28:38,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:38,457 INFO L85 PathProgramCache]: Analyzing trace with hash 550193109, now seen corresponding path program 1 times [2023-11-17 11:28:38,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:38,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12703406] [2023-11-17 11:28:38,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:38,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:38,578 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 11:28:38,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:38,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12703406] [2023-11-17 11:28:38,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12703406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:38,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:38,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:28:38,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052997743] [2023-11-17 11:28:38,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:38,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:28:38,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:38,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:28:38,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:28:38,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2023-11-17 11:28:38,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 19 transitions, 104 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:38,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:38,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2023-11-17 11:28:38,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:38,659 INFO L124 PetriNetUnfolderBase]: 36/86 cut-off events. [2023-11-17 11:28:38,659 INFO L125 PetriNetUnfolderBase]: For 159/165 co-relation queries the response was YES. [2023-11-17 11:28:38,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 86 events. 36/86 cut-off events. For 159/165 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 200 event pairs, 10 based on Foata normal form. 7/93 useless extension candidates. Maximal degree in co-relation 319. Up to 31 conditions per place. [2023-11-17 11:28:38,660 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-11-17 11:28:38,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 30 transitions, 201 flow [2023-11-17 11:28:38,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:28:38,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:28:38,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2023-11-17 11:28:38,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2023-11-17 11:28:38,662 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 150 transitions. [2023-11-17 11:28:38,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 150 transitions. [2023-11-17 11:28:38,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:38,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 150 transitions. [2023-11-17 11:28:38,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:38,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:38,664 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:38,664 INFO L175 Difference]: Start difference. First operand has 42 places, 19 transitions, 104 flow. Second operand 6 states and 150 transitions. [2023-11-17 11:28:38,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 30 transitions, 201 flow [2023-11-17 11:28:38,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 30 transitions, 174 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-17 11:28:38,665 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-11-17 11:28:38,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-11-17 11:28:38,667 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-11-17 11:28:38,667 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-11-17 11:28:38,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:38,669 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 11:28:38,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 11:28:38,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 11:28:38,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 11:28:38,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 11:28:38,671 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:38,673 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:28:38,674 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:28:38,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:28:38 BasicIcfg [2023-11-17 11:28:38,677 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:28:38,677 INFO L158 Benchmark]: Toolchain (without parser) took 4935.70ms. Allocated memory was 304.1MB in the beginning and 371.2MB in the end (delta: 67.1MB). Free memory was 251.3MB in the beginning and 245.5MB in the end (delta: 5.8MB). Peak memory consumption was 73.8MB. Max. memory is 8.0GB. [2023-11-17 11:28:38,677 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 225.4MB. Free memory was 179.9MB in the beginning and 179.7MB in the end (delta: 190.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:28:38,678 INFO L158 Benchmark]: CACSL2BoogieTranslator took 502.90ms. Allocated memory is still 304.1MB. Free memory was 251.3MB in the beginning and 231.0MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 11:28:38,678 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.29ms. Allocated memory is still 304.1MB. Free memory was 231.0MB in the beginning and 228.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:28:38,678 INFO L158 Benchmark]: Boogie Preprocessor took 38.69ms. Allocated memory is still 304.1MB. Free memory was 228.8MB in the beginning and 227.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:28:38,678 INFO L158 Benchmark]: RCFGBuilder took 577.70ms. Allocated memory is still 304.1MB. Free memory was 227.2MB in the beginning and 267.6MB in the end (delta: -40.4MB). Peak memory consumption was 23.4MB. Max. memory is 8.0GB. [2023-11-17 11:28:38,678 INFO L158 Benchmark]: TraceAbstraction took 3747.95ms. Allocated memory was 304.1MB in the beginning and 371.2MB in the end (delta: 67.1MB). Free memory was 267.1MB in the beginning and 245.5MB in the end (delta: 21.6MB). Peak memory consumption was 89.2MB. Max. memory is 8.0GB. [2023-11-17 11:28:38,680 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 225.4MB. Free memory was 179.9MB in the beginning and 179.7MB in the end (delta: 190.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 502.90ms. Allocated memory is still 304.1MB. Free memory was 251.3MB in the beginning and 231.0MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.29ms. Allocated memory is still 304.1MB. Free memory was 231.0MB in the beginning and 228.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.69ms. Allocated memory is still 304.1MB. Free memory was 228.8MB in the beginning and 227.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 577.70ms. Allocated memory is still 304.1MB. Free memory was 227.2MB in the beginning and 267.6MB in the end (delta: -40.4MB). Peak memory consumption was 23.4MB. Max. memory is 8.0GB. * TraceAbstraction took 3747.95ms. Allocated memory was 304.1MB in the beginning and 371.2MB in the end (delta: 67.1MB). Free memory was 267.1MB in the beginning and 245.5MB in the end (delta: 21.6MB). Peak memory consumption was 89.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5s, 42 PlacesBefore, 27 PlacesAfterwards, 32 TransitionsBefore, 17 TransitionsAfterwards, 576 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 15 TotalNumberOfCompositions, 936 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 636, independent: 587, independent conditional: 0, independent unconditional: 587, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 403, independent: 378, independent conditional: 0, independent unconditional: 378, 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: 403, independent: 368, independent conditional: 0, independent unconditional: 368, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 35, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 116, independent: 31, independent conditional: 0, independent unconditional: 31, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 636, independent: 209, independent conditional: 0, independent unconditional: 209, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 403, unknown conditional: 0, unknown unconditional: 403] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, 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: 3.6s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 226 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 226 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 417 IncrementalHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 1 mSDtfsCounter, 417 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323occurred in iteration=5, InterpolantAutomatonStates: 45, 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, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 474 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 11:28:38,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...