/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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:28:51,471 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:28:51,555 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 11:28:51,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:28:51,584 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:28:51,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:28:51,585 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:28:51,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:28:51,586 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:28:51,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:28:51,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:28:51,587 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:28:51,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:28:51,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:28:51,588 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:28:51,588 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:28:51,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:28:51,589 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:28:51,589 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:28:51,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:28:51,589 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:28:51,594 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:28:51,594 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:28:51,594 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:28:51,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:28:51,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:28:51,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:28:51,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:28:51,599 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:28:51,599 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:28:51,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:28:51,600 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:28:51,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:28:51,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:28:51,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:28:51,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:28:51,889 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:28:51,890 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:28:51,891 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 11:28:53,172 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:28:53,431 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:28:53,432 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 11:28:53,448 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76e4b55eb/0da78b7bf8d445f0b9078fae2dbc8395/FLAGbe6689fe2 [2023-11-17 11:28:53,461 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76e4b55eb/0da78b7bf8d445f0b9078fae2dbc8395 [2023-11-17 11:28:53,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:28:53,466 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:28:53,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:28:53,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:28:53,471 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:28:53,472 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:28:53" (1/1) ... [2023-11-17 11:28:53,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8c8172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:53, skipping insertion in model container [2023-11-17 11:28:53,473 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:28:53" (1/1) ... [2023-11-17 11:28:53,525 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:28:53,675 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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-17 11:28:53,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:28:53,834 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:28:53,851 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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-17 11:28:53,904 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:28:53,937 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:28:53,937 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:28:53,944 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:28:53,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:53 WrapperNode [2023-11-17 11:28:53,946 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:28:53,947 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:28:53,947 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:28:53,947 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:28:53,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:53" (1/1) ... [2023-11-17 11:28:53,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:53" (1/1) ... [2023-11-17 11:28:54,014 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-17 11:28:54,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:28:54,015 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:28:54,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:28:54,016 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:28:54,024 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:53" (1/1) ... [2023-11-17 11:28:54,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:53" (1/1) ... [2023-11-17 11:28:54,041 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:53" (1/1) ... [2023-11-17 11:28:54,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:53" (1/1) ... [2023-11-17 11:28:54,046 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:53" (1/1) ... [2023-11-17 11:28:54,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:53" (1/1) ... [2023-11-17 11:28:54,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:53" (1/1) ... [2023-11-17 11:28:54,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:53" (1/1) ... [2023-11-17 11:28:54,052 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:28:54,053 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:28:54,053 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:28:54,053 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:28:54,054 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:53" (1/1) ... [2023-11-17 11:28:54,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:28:54,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:28:54,098 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 11:28:54,124 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 11:28:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:28:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:28:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:28:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:28:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:28:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 11:28:54,133 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 11:28:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 11:28:54,133 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 11:28:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 11:28:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 11:28:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:28:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:28:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:28:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:28:54,136 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 11:28:54,284 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:28:54,286 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:28:54,423 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:28:54,552 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:28:54,552 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:28:54,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:28:54 BoogieIcfgContainer [2023-11-17 11:28:54,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:28:54,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:28:54,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:28:54,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:28:54,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:28:53" (1/3) ... [2023-11-17 11:28:54,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e442117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:28:54, skipping insertion in model container [2023-11-17 11:28:54,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:53" (2/3) ... [2023-11-17 11:28:54,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e442117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:28:54, skipping insertion in model container [2023-11-17 11:28:54,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:28:54" (3/3) ... [2023-11-17 11:28:54,561 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 11:28:54,577 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:28:54,577 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:28:54,577 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:28:54,630 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:28:54,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2023-11-17 11:28:54,682 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2023-11-17 11:28:54,683 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:28:54,687 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 11:28:54,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2023-11-17 11:28:54,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2023-11-17 11:28:54,693 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:28:54,711 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 32 transitions, 73 flow [2023-11-17 11:28:54,714 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 32 transitions, 73 flow [2023-11-17 11:28:54,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 32 transitions, 73 flow [2023-11-17 11:28:54,733 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2023-11-17 11:28:54,733 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:28:54,733 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 11:28:54,734 INFO L119 LiptonReduction]: Number of co-enabled transitions 576 [2023-11-17 11:28:55,289 INFO L134 LiptonReduction]: Checked pairs total: 936 [2023-11-17 11:28:55,289 INFO L136 LiptonReduction]: Total number of compositions: 15 [2023-11-17 11:28:55,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:28:55,324 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;@8c072af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:28:55,324 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 11:28:55,330 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:28:55,330 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-17 11:28:55,330 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:28:55,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:55,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:55,332 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 11:28:55,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:55,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1489345267, now seen corresponding path program 1 times [2023-11-17 11:28:55,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:55,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802122269] [2023-11-17 11:28:55,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:55,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:55,848 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 11:28:55,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:55,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802122269] [2023-11-17 11:28:55,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802122269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:55,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:55,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:28:55,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504559435] [2023-11-17 11:28:55,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:55,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:28:55,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:55,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:28:55,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:28:55,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2023-11-17 11:28:55,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 11:28:55,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:55,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2023-11-17 11:28:55,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:56,082 INFO L124 PetriNetUnfolderBase]: 574/920 cut-off events. [2023-11-17 11:28:56,083 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-17 11:28:56,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1897 conditions, 920 events. 574/920 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4032 event pairs, 208 based on Foata normal form. 41/961 useless extension candidates. Maximal degree in co-relation 1886. Up to 559 conditions per place. [2023-11-17 11:28:56,093 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 25 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-11-17 11:28:56,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-11-17 11:28:56,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:28:56,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:28:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2023-11-17 11:28:56,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408805031446541 [2023-11-17 11:28:56,105 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 86 transitions. [2023-11-17 11:28:56,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 86 transitions. [2023-11-17 11:28:56,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:56,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 86 transitions. [2023-11-17 11:28:56,112 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 11:28:56,119 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 11:28:56,119 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 11:28:56,121 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 86 transitions. [2023-11-17 11:28:56,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-11-17 11:28:56,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:28:56,126 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-11-17 11:28:56,128 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-11-17 11:28:56,131 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-17 11:28:56,132 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-11-17 11:28:56,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 11:28:56,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:56,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:56,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:28:56,133 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 11:28:56,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:56,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1074937021, now seen corresponding path program 1 times [2023-11-17 11:28:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:56,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844617413] [2023-11-17 11:28:56,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:56,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:56,269 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 11:28:56,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:56,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844617413] [2023-11-17 11:28:56,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844617413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:56,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:56,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:28:56,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830020490] [2023-11-17 11:28:56,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:56,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:56,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:56,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:56,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:56,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2023-11-17 11:28:56,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 11:28:56,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:56,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2023-11-17 11:28:56,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:56,408 INFO L124 PetriNetUnfolderBase]: 482/815 cut-off events. [2023-11-17 11:28:56,408 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2023-11-17 11:28:56,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2112 conditions, 815 events. 482/815 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3656 event pairs, 142 based on Foata normal form. 57/858 useless extension candidates. Maximal degree in co-relation 2100. Up to 305 conditions per place. [2023-11-17 11:28:56,412 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 24 selfloop transitions, 4 changer transitions 9/39 dead transitions. [2023-11-17 11:28:56,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 39 transitions, 224 flow [2023-11-17 11:28:56,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:28:56,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:28:56,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2023-11-17 11:28:56,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377358490566038 [2023-11-17 11:28:56,417 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 114 transitions. [2023-11-17 11:28:56,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 114 transitions. [2023-11-17 11:28:56,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:56,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 114 transitions. [2023-11-17 11:28:56,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 11:28:56,422 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 11:28:56,422 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 11:28:56,422 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 114 transitions. [2023-11-17 11:28:56,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 39 transitions, 224 flow [2023-11-17 11:28:56,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:28:56,427 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 91 flow [2023-11-17 11:28:56,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-11-17 11:28:56,428 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-11-17 11:28:56,429 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 91 flow [2023-11-17 11:28:56,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 11:28:56,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:56,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:56,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:28:56,432 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 11:28:56,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:56,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2072585034, now seen corresponding path program 1 times [2023-11-17 11:28:56,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:56,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711999100] [2023-11-17 11:28:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:56,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:56,577 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 11:28:56,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:56,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711999100] [2023-11-17 11:28:56,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711999100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:56,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:56,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:28:56,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448114510] [2023-11-17 11:28:56,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:56,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:56,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:56,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:56,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:56,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2023-11-17 11:28:56,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 91 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 11:28:56,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:56,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2023-11-17 11:28:56,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:56,666 INFO L124 PetriNetUnfolderBase]: 191/334 cut-off events. [2023-11-17 11:28:56,666 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-11-17 11:28:56,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 334 events. 191/334 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1192 event pairs, 40 based on Foata normal form. 2/336 useless extension candidates. Maximal degree in co-relation 890. Up to 177 conditions per place. [2023-11-17 11:28:56,669 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 31 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-11-17 11:28:56,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 38 transitions, 220 flow [2023-11-17 11:28:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:28:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:28:56,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2023-11-17 11:28:56,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188679245283019 [2023-11-17 11:28:56,673 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 110 transitions. [2023-11-17 11:28:56,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 110 transitions. [2023-11-17 11:28:56,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:56,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 110 transitions. [2023-11-17 11:28:56,675 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 11:28:56,675 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 11:28:56,676 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 11:28:56,676 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 91 flow. Second operand 4 states and 110 transitions. [2023-11-17 11:28:56,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 38 transitions, 220 flow [2023-11-17 11:28:56,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 208 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:28:56,679 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 125 flow [2023-11-17 11:28:56,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-11-17 11:28:56,680 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-11-17 11:28:56,680 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 125 flow [2023-11-17 11:28:56,681 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 11:28:56,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:56,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:56,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:28:56,682 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 11:28:56,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:56,682 INFO L85 PathProgramCache]: Analyzing trace with hash 169959555, now seen corresponding path program 1 times [2023-11-17 11:28:56,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:56,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744889979] [2023-11-17 11:28:56,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:56,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:56,803 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 11:28:56,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:56,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744889979] [2023-11-17 11:28:56,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744889979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:56,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:56,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:28:56,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085185196] [2023-11-17 11:28:56,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:56,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:28:56,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:56,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:28:56,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:28:56,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2023-11-17 11:28:56,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 11:28:56,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:56,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2023-11-17 11:28:56,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:56,870 INFO L124 PetriNetUnfolderBase]: 182/319 cut-off events. [2023-11-17 11:28:56,870 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-11-17 11:28:56,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 319 events. 182/319 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1097 event pairs, 119 based on Foata normal form. 2/321 useless extension candidates. Maximal degree in co-relation 976. Up to 243 conditions per place. [2023-11-17 11:28:56,872 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 28 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2023-11-17 11:28:56,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 219 flow [2023-11-17 11:28:56,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:28:56,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:28:56,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2023-11-17 11:28:56,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2023-11-17 11:28:56,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2023-11-17 11:28:56,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2023-11-17 11:28:56,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:56,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2023-11-17 11:28:56,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 11:28:56,876 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 11:28:56,877 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 11:28:56,877 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 125 flow. Second operand 3 states and 84 transitions. [2023-11-17 11:28:56,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 219 flow [2023-11-17 11:28:56,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:28:56,880 INFO L231 Difference]: Finished difference. Result has 36 places, 24 transitions, 136 flow [2023-11-17 11:28:56,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2023-11-17 11:28:56,882 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-11-17 11:28:56,882 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 136 flow [2023-11-17 11:28:56,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 11:28:56,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:56,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:56,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:28:56,883 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 11:28:56,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:56,883 INFO L85 PathProgramCache]: Analyzing trace with hash 893257611, now seen corresponding path program 1 times [2023-11-17 11:28:56,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:56,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840577993] [2023-11-17 11:28:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:56,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:57,000 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 11:28:57,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:57,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840577993] [2023-11-17 11:28:57,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840577993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:57,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:57,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:28:57,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764350029] [2023-11-17 11:28:57,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:57,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:57,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:57,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:57,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:57,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2023-11-17 11:28:57,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 136 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 11:28:57,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:57,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2023-11-17 11:28:57,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:57,087 INFO L124 PetriNetUnfolderBase]: 160/316 cut-off events. [2023-11-17 11:28:57,088 INFO L125 PetriNetUnfolderBase]: For 670/672 co-relation queries the response was YES. [2023-11-17 11:28:57,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 316 events. 160/316 cut-off events. For 670/672 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1331 event pairs, 24 based on Foata normal form. 13/328 useless extension candidates. Maximal degree in co-relation 1013. Up to 130 conditions per place. [2023-11-17 11:28:57,090 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 44 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2023-11-17 11:28:57,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 51 transitions, 376 flow [2023-11-17 11:28:57,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:28:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:28:57,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2023-11-17 11:28:57,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518867924528302 [2023-11-17 11:28:57,092 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 117 transitions. [2023-11-17 11:28:57,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 117 transitions. [2023-11-17 11:28:57,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:57,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 117 transitions. [2023-11-17 11:28:57,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 11:28:57,093 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 11:28:57,093 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 11:28:57,093 INFO L175 Difference]: Start difference. First operand has 36 places, 24 transitions, 136 flow. Second operand 4 states and 117 transitions. [2023-11-17 11:28:57,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 51 transitions, 376 flow [2023-11-17 11:28:57,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 360 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:28:57,097 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 166 flow [2023-11-17 11:28:57,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-11-17 11:28:57,097 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-11-17 11:28:57,098 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 166 flow [2023-11-17 11:28:57,098 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 11:28:57,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:57,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:57,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:28:57,098 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 11:28:57,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:57,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1946018149, now seen corresponding path program 1 times [2023-11-17 11:28:57,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:57,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996638438] [2023-11-17 11:28:57,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:57,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:57,200 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 11:28:57,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:57,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996638438] [2023-11-17 11:28:57,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996638438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:57,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:57,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:28:57,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855679334] [2023-11-17 11:28:57,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:57,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:28:57,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:57,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:28:57,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:28:57,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2023-11-17 11:28:57,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 166 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 11:28:57,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:57,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2023-11-17 11:28:57,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:57,307 INFO L124 PetriNetUnfolderBase]: 146/304 cut-off events. [2023-11-17 11:28:57,308 INFO L125 PetriNetUnfolderBase]: For 715/717 co-relation queries the response was YES. [2023-11-17 11:28:57,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 304 events. 146/304 cut-off events. For 715/717 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1323 event pairs, 20 based on Foata normal form. 11/314 useless extension candidates. Maximal degree in co-relation 1180. Up to 130 conditions per place. [2023-11-17 11:28:57,310 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 41 selfloop transitions, 8 changer transitions 1/52 dead transitions. [2023-11-17 11:28:57,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 400 flow [2023-11-17 11:28:57,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:28:57,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:28:57,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2023-11-17 11:28:57,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5358490566037736 [2023-11-17 11:28:57,311 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 142 transitions. [2023-11-17 11:28:57,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 142 transitions. [2023-11-17 11:28:57,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:57,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 142 transitions. [2023-11-17 11:28:57,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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 11:28:57,313 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 11:28:57,313 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 11:28:57,313 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 166 flow. Second operand 5 states and 142 transitions. [2023-11-17 11:28:57,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 400 flow [2023-11-17 11:28:57,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 397 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:28:57,318 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 218 flow [2023-11-17 11:28:57,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-11-17 11:28:57,318 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-11-17 11:28:57,319 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 218 flow [2023-11-17 11:28:57,319 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 11:28:57,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:57,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:57,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:28:57,319 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 11:28:57,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:57,320 INFO L85 PathProgramCache]: Analyzing trace with hash -894179256, now seen corresponding path program 1 times [2023-11-17 11:28:57,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:57,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659105524] [2023-11-17 11:28:57,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:57,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:57,414 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 11:28:57,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:57,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659105524] [2023-11-17 11:28:57,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659105524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:57,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:57,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:28:57,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956381670] [2023-11-17 11:28:57,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:57,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:28:57,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:57,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:28:57,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:28:57,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2023-11-17 11:28:57,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 218 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 11:28:57,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:57,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2023-11-17 11:28:57,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:57,519 INFO L124 PetriNetUnfolderBase]: 141/295 cut-off events. [2023-11-17 11:28:57,520 INFO L125 PetriNetUnfolderBase]: For 970/972 co-relation queries the response was YES. [2023-11-17 11:28:57,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337 conditions, 295 events. 141/295 cut-off events. For 970/972 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1287 event pairs, 20 based on Foata normal form. 6/300 useless extension candidates. Maximal degree in co-relation 1314. Up to 122 conditions per place. [2023-11-17 11:28:57,522 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 24 selfloop transitions, 11 changer transitions 11/47 dead transitions. [2023-11-17 11:28:57,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 399 flow [2023-11-17 11:28:57,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:28:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:28:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2023-11-17 11:28:57,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937106918238994 [2023-11-17 11:28:57,523 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 157 transitions. [2023-11-17 11:28:57,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 157 transitions. [2023-11-17 11:28:57,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:57,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 157 transitions. [2023-11-17 11:28:57,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 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 11:28:57,524 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 11:28:57,525 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 11:28:57,525 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 218 flow. Second operand 6 states and 157 transitions. [2023-11-17 11:28:57,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 399 flow [2023-11-17 11:28:57,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 386 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 11:28:57,528 INFO L231 Difference]: Finished difference. Result has 49 places, 28 transitions, 223 flow [2023-11-17 11:28:57,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=49, PETRI_TRANSITIONS=28} [2023-11-17 11:28:57,529 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-11-17 11:28:57,529 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 28 transitions, 223 flow [2023-11-17 11:28:57,529 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 11:28:57,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:57,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:57,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:28:57,530 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 11:28:57,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:57,530 INFO L85 PathProgramCache]: Analyzing trace with hash -787729519, now seen corresponding path program 1 times [2023-11-17 11:28:57,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:57,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504420539] [2023-11-17 11:28:57,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:57,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:57,612 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 11:28:57,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:57,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504420539] [2023-11-17 11:28:57,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504420539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:57,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:57,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:28:57,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586523108] [2023-11-17 11:28:57,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:57,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:57,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:57,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:57,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:57,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2023-11-17 11:28:57,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 28 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 11:28:57,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:57,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2023-11-17 11:28:57,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:57,669 INFO L124 PetriNetUnfolderBase]: 58/140 cut-off events. [2023-11-17 11:28:57,670 INFO L125 PetriNetUnfolderBase]: For 592/592 co-relation queries the response was YES. [2023-11-17 11:28:57,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 140 events. 58/140 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 481 event pairs, 9 based on Foata normal form. 1/141 useless extension candidates. Maximal degree in co-relation 718. Up to 92 conditions per place. [2023-11-17 11:28:57,671 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 22 selfloop transitions, 3 changer transitions 25/50 dead transitions. [2023-11-17 11:28:57,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 500 flow [2023-11-17 11:28:57,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:28:57,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:28:57,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2023-11-17 11:28:57,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188679245283019 [2023-11-17 11:28:57,672 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 110 transitions. [2023-11-17 11:28:57,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 110 transitions. [2023-11-17 11:28:57,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:57,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 110 transitions. [2023-11-17 11:28:57,673 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 11:28:57,673 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 11:28:57,673 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 11:28:57,673 INFO L175 Difference]: Start difference. First operand has 49 places, 28 transitions, 223 flow. Second operand 4 states and 110 transitions. [2023-11-17 11:28:57,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 500 flow [2023-11-17 11:28:57,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 50 transitions, 319 flow, removed 22 selfloop flow, removed 16 redundant places. [2023-11-17 11:28:57,676 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 110 flow [2023-11-17 11:28:57,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2023-11-17 11:28:57,677 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-11-17 11:28:57,677 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 110 flow [2023-11-17 11:28:57,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 11:28:57,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:57,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:57,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:28:57,678 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 11:28:57,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:57,678 INFO L85 PathProgramCache]: Analyzing trace with hash -587995645, now seen corresponding path program 2 times [2023-11-17 11:28:57,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:57,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154380069] [2023-11-17 11:28:57,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:57,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:57,764 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 11:28:57,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:57,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154380069] [2023-11-17 11:28:57,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154380069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:57,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:57,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:28:57,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625008047] [2023-11-17 11:28:57,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:57,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:57,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:57,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:57,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:57,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2023-11-17 11:28:57,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 11:28:57,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:57,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2023-11-17 11:28:57,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:57,835 INFO L124 PetriNetUnfolderBase]: 17/50 cut-off events. [2023-11-17 11:28:57,835 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-17 11:28:57,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 50 events. 17/50 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 5 based on Foata normal form. 1/51 useless extension candidates. Maximal degree in co-relation 167. Up to 17 conditions per place. [2023-11-17 11:28:57,835 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2023-11-17 11:28:57,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 31 transitions, 203 flow [2023-11-17 11:28:57,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:28:57,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:28:57,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2023-11-17 11:28:57,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4490566037735849 [2023-11-17 11:28:57,837 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 119 transitions. [2023-11-17 11:28:57,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 119 transitions. [2023-11-17 11:28:57,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:57,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 119 transitions. [2023-11-17 11:28:57,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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 11:28:57,838 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 11:28:57,838 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 11:28:57,838 INFO L175 Difference]: Start difference. First operand has 37 places, 23 transitions, 110 flow. Second operand 5 states and 119 transitions. [2023-11-17 11:28:57,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 31 transitions, 203 flow [2023-11-17 11:28:57,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 165 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-11-17 11:28:57,839 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-11-17 11:28:57,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-11-17 11:28:57,840 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-11-17 11:28:57,840 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-11-17 11:28:57,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 11:28:57,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 11:28:57,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 11:28:57,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 11:28:57,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 11:28:57,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:28:57,844 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:57,846 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:28:57,847 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:28:57,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:28:57 BasicIcfg [2023-11-17 11:28:57,850 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:28:57,850 INFO L158 Benchmark]: Toolchain (without parser) took 4384.68ms. Allocated memory was 178.3MB in the beginning and 276.8MB in the end (delta: 98.6MB). Free memory was 129.9MB in the beginning and 240.6MB in the end (delta: -110.7MB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:28:57,850 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 178.3MB. Free memory is still 128.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:28:57,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 479.09ms. Allocated memory is still 178.3MB. Free memory was 129.5MB in the beginning and 109.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-17 11:28:57,851 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.83ms. Allocated memory is still 178.3MB. Free memory was 109.2MB in the beginning and 107.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:28:57,851 INFO L158 Benchmark]: Boogie Preprocessor took 36.78ms. Allocated memory is still 178.3MB. Free memory was 107.1MB in the beginning and 105.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:28:57,851 INFO L158 Benchmark]: RCFGBuilder took 500.95ms. Allocated memory was 178.3MB in the beginning and 276.8MB in the end (delta: 98.6MB). Free memory was 105.8MB in the beginning and 239.6MB in the end (delta: -133.8MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-17 11:28:57,851 INFO L158 Benchmark]: TraceAbstraction took 3294.34ms. Allocated memory is still 276.8MB. Free memory was 238.5MB in the beginning and 240.6MB in the end (delta: -2.1MB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:28:57,853 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 178.3MB. Free memory is still 128.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 479.09ms. Allocated memory is still 178.3MB. Free memory was 129.5MB in the beginning and 109.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 67.83ms. Allocated memory is still 178.3MB. Free memory was 109.2MB in the beginning and 107.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.78ms. Allocated memory is still 178.3MB. Free memory was 107.1MB in the beginning and 105.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 500.95ms. Allocated memory was 178.3MB in the beginning and 276.8MB in the end (delta: 98.6MB). Free memory was 105.8MB in the beginning and 239.6MB in the end (delta: -133.8MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 3294.34ms. Allocated memory is still 276.8MB. Free memory was 238.5MB in the beginning and 240.6MB in the end (delta: -2.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6s, 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: 589, independent: 540, independent conditional: 0, independent unconditional: 540, 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: 388, independent: 362, independent conditional: 0, independent unconditional: 362, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 388, independent: 352, independent conditional: 0, independent unconditional: 352, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 36, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 121, independent: 35, independent conditional: 0, independent unconditional: 35, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 589, independent: 178, independent conditional: 0, independent unconditional: 178, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 388, unknown conditional: 0, unknown unconditional: 388] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: 3.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 170 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 170 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 366 IncrementalHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 6 mSDtfsCounter, 366 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=223occurred in iteration=7, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 443 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 11:28:57,872 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...