/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_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 15:18:57,191 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:18:57,265 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 15:18:57,289 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:18:57,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:18:57,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:18:57,292 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:18:57,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:18:57,292 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:18:57,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:18:57,296 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:18:57,296 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:18:57,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:18:57,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:18:57,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:18:57,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:18:57,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:18:57,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:18:57,298 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:18:57,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:18:57,298 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:18:57,298 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:18:57,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:18:57,299 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:18:57,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:18:57,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:18:57,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:18:57,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:18:57,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:18:57,300 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:18:57,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:18:57,301 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:18:57,301 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:18:57,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:18:57,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:18:57,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:18:57,506 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:18:57,508 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:18:57,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 15:18:58,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:18:58,907 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:18:58,909 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 15:18:58,918 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d56403032/6727fb0b8eac4e469bd12bab27086f5c/FLAG60da39f4e [2023-11-17 15:18:58,933 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d56403032/6727fb0b8eac4e469bd12bab27086f5c [2023-11-17 15:18:58,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:18:58,935 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:18:58,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:18:58,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:18:58,939 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:18:58,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:18:58" (1/1) ... [2023-11-17 15:18:58,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d31eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:58, skipping insertion in model container [2023-11-17 15:18:58,940 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:18:58" (1/1) ... [2023-11-17 15:18:58,971 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:18:59,063 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/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-17 15:18:59,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:18:59,141 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:18:59,148 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/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-17 15:18:59,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:18:59,188 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:18:59,188 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:18:59,193 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:18:59,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:59 WrapperNode [2023-11-17 15:18:59,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:18:59,194 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:18:59,195 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:18:59,195 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:18:59,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:59" (1/1) ... [2023-11-17 15:18:59,224 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:59" (1/1) ... [2023-11-17 15:18:59,239 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2023-11-17 15:18:59,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:18:59,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:18:59,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:18:59,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:18:59,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:59" (1/1) ... [2023-11-17 15:18:59,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:59" (1/1) ... [2023-11-17 15:18:59,259 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:59" (1/1) ... [2023-11-17 15:18:59,259 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:59" (1/1) ... [2023-11-17 15:18:59,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:59" (1/1) ... [2023-11-17 15:18:59,263 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:59" (1/1) ... [2023-11-17 15:18:59,264 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:59" (1/1) ... [2023-11-17 15:18:59,265 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:59" (1/1) ... [2023-11-17 15:18:59,266 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:18:59,267 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:18:59,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:18:59,267 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:18:59,267 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:59" (1/1) ... [2023-11-17 15:18:59,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:18:59,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:18:59,322 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 15:18:59,343 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 15:18:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:18:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:18:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:18:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:18:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:18:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 15:18:59,349 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 15:18:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 15:18:59,349 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 15:18:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 15:18:59,349 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 15:18:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-17 15:18:59,349 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-17 15:18:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:18:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:18:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:18:59,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:18:59,350 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 15:18:59,454 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:18:59,456 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:18:59,610 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:18:59,617 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:18:59,617 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:18:59,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:18:59 BoogieIcfgContainer [2023-11-17 15:18:59,618 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:18:59,620 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:18:59,620 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:18:59,622 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:18:59,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:18:58" (1/3) ... [2023-11-17 15:18:59,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79169ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:18:59, skipping insertion in model container [2023-11-17 15:18:59,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:59" (2/3) ... [2023-11-17 15:18:59,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79169ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:18:59, skipping insertion in model container [2023-11-17 15:18:59,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:18:59" (3/3) ... [2023-11-17 15:18:59,623 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 15:18:59,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:18:59,634 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:18:59,634 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:18:59,690 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:18:59,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 107 transitions, 230 flow [2023-11-17 15:18:59,772 INFO L124 PetriNetUnfolderBase]: 2/103 cut-off events. [2023-11-17 15:18:59,772 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:18:59,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 103 events. 2/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-11-17 15:18:59,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 107 transitions, 230 flow [2023-11-17 15:18:59,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 86 transitions, 184 flow [2023-11-17 15:18:59,783 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:18:59,794 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 86 transitions, 184 flow [2023-11-17 15:18:59,795 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 86 transitions, 184 flow [2023-11-17 15:18:59,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 86 transitions, 184 flow [2023-11-17 15:18:59,811 INFO L124 PetriNetUnfolderBase]: 1/86 cut-off events. [2023-11-17 15:18:59,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:18:59,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 1/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-11-17 15:18:59,813 INFO L119 LiptonReduction]: Number of co-enabled transitions 2002 [2023-11-17 15:19:01,688 INFO L134 LiptonReduction]: Checked pairs total: 3004 [2023-11-17 15:19:01,688 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-11-17 15:19:01,708 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:19:01,713 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;@4a7c103f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:19:01,714 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 15:19:01,718 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:19:01,719 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-11-17 15:19:01,719 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:19:01,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:01,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:01,719 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 2 more)] === [2023-11-17 15:19:01,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1793564291, now seen corresponding path program 1 times [2023-11-17 15:19:01,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:01,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124258394] [2023-11-17 15:19:01,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:01,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:02,054 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 15:19:02,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:02,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124258394] [2023-11-17 15:19:02,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124258394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:02,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:02,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:19:02,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148182039] [2023-11-17 15:19:02,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:02,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:19:02,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:02,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:19:02,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:19:02,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 178 [2023-11-17 15:19:02,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 15:19:02,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:02,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 178 [2023-11-17 15:19:02,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:02,421 INFO L124 PetriNetUnfolderBase]: 1747/2539 cut-off events. [2023-11-17 15:19:02,421 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-17 15:19:02,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5250 conditions, 2539 events. 1747/2539 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11288 event pairs, 696 based on Foata normal form. 75/2614 useless extension candidates. Maximal degree in co-relation 5238. Up to 1811 conditions per place. [2023-11-17 15:19:02,453 INFO L140 encePairwiseOnDemand]: 170/178 looper letters, 30 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2023-11-17 15:19:02,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 165 flow [2023-11-17 15:19:02,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:19:02,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:19:02,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-11-17 15:19:02,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5786516853932584 [2023-11-17 15:19:02,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-11-17 15:19:02,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-11-17 15:19:02,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:02,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-11-17 15:19:02,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 15:19:02,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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 15:19:02,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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 15:19:02,505 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 309 transitions. [2023-11-17 15:19:02,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 165 flow [2023-11-17 15:19:02,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 158 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 15:19:02,511 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 84 flow [2023-11-17 15:19:02,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-11-17 15:19:02,516 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2023-11-17 15:19:02,516 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 84 flow [2023-11-17 15:19:02,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 15:19:02,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:02,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:02,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:19:02,532 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 2 more)] === [2023-11-17 15:19:02,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:02,533 INFO L85 PathProgramCache]: Analyzing trace with hash -234082685, now seen corresponding path program 1 times [2023-11-17 15:19:02,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:02,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588864700] [2023-11-17 15:19:02,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:02,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:02,783 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 15:19:02,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:02,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588864700] [2023-11-17 15:19:02,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588864700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:02,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:02,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:19:02,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778080847] [2023-11-17 15:19:02,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:02,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:19:02,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:02,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:19:02,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:19:02,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 178 [2023-11-17 15:19:02,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 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 15:19:02,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:02,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 178 [2023-11-17 15:19:02,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:02,949 INFO L124 PetriNetUnfolderBase]: 1630/2377 cut-off events. [2023-11-17 15:19:02,949 INFO L125 PetriNetUnfolderBase]: For 536/536 co-relation queries the response was YES. [2023-11-17 15:19:02,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5993 conditions, 2377 events. 1630/2377 cut-off events. For 536/536 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10194 event pairs, 243 based on Foata normal form. 21/2398 useless extension candidates. Maximal degree in co-relation 5982. Up to 1396 conditions per place. [2023-11-17 15:19:02,958 INFO L140 encePairwiseOnDemand]: 172/178 looper letters, 37 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2023-11-17 15:19:02,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 237 flow [2023-11-17 15:19:02,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:19:02,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:19:02,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2023-11-17 15:19:02,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5660112359550562 [2023-11-17 15:19:02,960 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2023-11-17 15:19:02,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2023-11-17 15:19:02,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:02,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2023-11-17 15:19:02,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 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 15:19:02,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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 15:19:02,963 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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 15:19:02,963 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 84 flow. Second operand 4 states and 403 transitions. [2023-11-17 15:19:02,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 237 flow [2023-11-17 15:19:02,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:19:02,965 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 125 flow [2023-11-17 15:19:02,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-11-17 15:19:02,966 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-11-17 15:19:02,966 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 125 flow [2023-11-17 15:19:02,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 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 15:19:02,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:02,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:02,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:19:02,967 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 2 more)] === [2023-11-17 15:19:02,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:02,967 INFO L85 PathProgramCache]: Analyzing trace with hash -234083057, now seen corresponding path program 1 times [2023-11-17 15:19:02,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:02,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280354595] [2023-11-17 15:19:02,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:02,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:03,040 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 15:19:03,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:03,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280354595] [2023-11-17 15:19:03,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280354595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:03,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:03,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:19:03,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600928866] [2023-11-17 15:19:03,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:03,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:19:03,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:03,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:19:03,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:19:03,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 178 [2023-11-17 15:19:03,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 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 15:19:03,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:03,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 178 [2023-11-17 15:19:03,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:03,177 INFO L124 PetriNetUnfolderBase]: 1540/2251 cut-off events. [2023-11-17 15:19:03,178 INFO L125 PetriNetUnfolderBase]: For 1069/1069 co-relation queries the response was YES. [2023-11-17 15:19:03,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6200 conditions, 2251 events. 1540/2251 cut-off events. For 1069/1069 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 9711 event pairs, 433 based on Foata normal form. 24/2275 useless extension candidates. Maximal degree in co-relation 6186. Up to 1438 conditions per place. [2023-11-17 15:19:03,187 INFO L140 encePairwiseOnDemand]: 172/178 looper letters, 44 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2023-11-17 15:19:03,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 52 transitions, 308 flow [2023-11-17 15:19:03,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:19:03,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:19:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 405 transitions. [2023-11-17 15:19:03,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688202247191011 [2023-11-17 15:19:03,189 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 405 transitions. [2023-11-17 15:19:03,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 405 transitions. [2023-11-17 15:19:03,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:03,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 405 transitions. [2023-11-17 15:19:03,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 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 15:19:03,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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 15:19:03,191 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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 15:19:03,191 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 125 flow. Second operand 4 states and 405 transitions. [2023-11-17 15:19:03,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 52 transitions, 308 flow [2023-11-17 15:19:03,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 308 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:19:03,194 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 187 flow [2023-11-17 15:19:03,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2023-11-17 15:19:03,195 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-11-17 15:19:03,195 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 187 flow [2023-11-17 15:19:03,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 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 15:19:03,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:03,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:03,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:19:03,196 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 2 more)] === [2023-11-17 15:19:03,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:03,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1333370127, now seen corresponding path program 1 times [2023-11-17 15:19:03,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:03,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896829408] [2023-11-17 15:19:03,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:03,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:03,275 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 15:19:03,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:03,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896829408] [2023-11-17 15:19:03,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896829408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:03,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:03,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:19:03,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769575704] [2023-11-17 15:19:03,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:03,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:19:03,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:03,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:19:03,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:19:03,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 178 [2023-11-17 15:19:03,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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 15:19:03,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:03,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 178 [2023-11-17 15:19:03,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:03,415 INFO L124 PetriNetUnfolderBase]: 1489/2182 cut-off events. [2023-11-17 15:19:03,415 INFO L125 PetriNetUnfolderBase]: For 2527/2527 co-relation queries the response was YES. [2023-11-17 15:19:03,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6743 conditions, 2182 events. 1489/2182 cut-off events. For 2527/2527 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9375 event pairs, 201 based on Foata normal form. 18/2200 useless extension candidates. Maximal degree in co-relation 6724. Up to 1239 conditions per place. [2023-11-17 15:19:03,426 INFO L140 encePairwiseOnDemand]: 171/178 looper letters, 38 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2023-11-17 15:19:03,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 338 flow [2023-11-17 15:19:03,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:19:03,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:19:03,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2023-11-17 15:19:03,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5646067415730337 [2023-11-17 15:19:03,427 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 402 transitions. [2023-11-17 15:19:03,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 402 transitions. [2023-11-17 15:19:03,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:03,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 402 transitions. [2023-11-17 15:19:03,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 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 15:19:03,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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 15:19:03,430 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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 15:19:03,430 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 187 flow. Second operand 4 states and 402 transitions. [2023-11-17 15:19:03,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 338 flow [2023-11-17 15:19:03,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 333 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:19:03,436 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 210 flow [2023-11-17 15:19:03,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2023-11-17 15:19:03,437 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2023-11-17 15:19:03,437 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 210 flow [2023-11-17 15:19:03,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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 15:19:03,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:03,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:03,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:19:03,438 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 2 more)] === [2023-11-17 15:19:03,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:03,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1680073163, now seen corresponding path program 1 times [2023-11-17 15:19:03,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:03,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067153611] [2023-11-17 15:19:03,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:03,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:03,499 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 15:19:03,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:03,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067153611] [2023-11-17 15:19:03,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067153611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:03,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:03,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:19:03,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964136965] [2023-11-17 15:19:03,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:03,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:19:03,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:03,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:19:03,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:19:03,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 178 [2023-11-17 15:19:03,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 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 15:19:03,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:03,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 178 [2023-11-17 15:19:03,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:03,670 INFO L124 PetriNetUnfolderBase]: 1703/2579 cut-off events. [2023-11-17 15:19:03,670 INFO L125 PetriNetUnfolderBase]: For 5046/5194 co-relation queries the response was YES. [2023-11-17 15:19:03,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8551 conditions, 2579 events. 1703/2579 cut-off events. For 5046/5194 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 13305 event pairs, 293 based on Foata normal form. 160/2721 useless extension candidates. Maximal degree in co-relation 8530. Up to 1080 conditions per place. [2023-11-17 15:19:03,682 INFO L140 encePairwiseOnDemand]: 174/178 looper letters, 44 selfloop transitions, 4 changer transitions 14/66 dead transitions. [2023-11-17 15:19:03,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 546 flow [2023-11-17 15:19:03,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:19:03,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:19:03,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 419 transitions. [2023-11-17 15:19:03,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5884831460674157 [2023-11-17 15:19:03,684 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 419 transitions. [2023-11-17 15:19:03,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 419 transitions. [2023-11-17 15:19:03,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:03,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 419 transitions. [2023-11-17 15:19:03,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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 15:19:03,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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 15:19:03,687 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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 15:19:03,687 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 210 flow. Second operand 4 states and 419 transitions. [2023-11-17 15:19:03,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 546 flow [2023-11-17 15:19:03,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 504 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:19:03,693 INFO L231 Difference]: Finished difference. Result has 47 places, 31 transitions, 205 flow [2023-11-17 15:19:03,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=47, PETRI_TRANSITIONS=31} [2023-11-17 15:19:03,693 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2023-11-17 15:19:03,694 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 31 transitions, 205 flow [2023-11-17 15:19:03,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 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 15:19:03,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:03,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:03,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:19:03,694 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 2 more)] === [2023-11-17 15:19:03,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:03,695 INFO L85 PathProgramCache]: Analyzing trace with hash -120201394, now seen corresponding path program 1 times [2023-11-17 15:19:03,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:03,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157830328] [2023-11-17 15:19:03,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:03,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:03,772 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 15:19:03,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:03,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157830328] [2023-11-17 15:19:03,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157830328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:03,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:03,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:19:03,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415096532] [2023-11-17 15:19:03,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:03,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:19:03,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:03,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:19:03,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:19:03,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 178 [2023-11-17 15:19:03,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 31 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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 15:19:03,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:03,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 178 [2023-11-17 15:19:03,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:03,920 INFO L124 PetriNetUnfolderBase]: 1333/2026 cut-off events. [2023-11-17 15:19:03,920 INFO L125 PetriNetUnfolderBase]: For 3694/3694 co-relation queries the response was YES. [2023-11-17 15:19:03,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6535 conditions, 2026 events. 1333/2026 cut-off events. For 3694/3694 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8969 event pairs, 321 based on Foata normal form. 44/2070 useless extension candidates. Maximal degree in co-relation 6512. Up to 888 conditions per place. [2023-11-17 15:19:03,929 INFO L140 encePairwiseOnDemand]: 172/178 looper letters, 38 selfloop transitions, 8 changer transitions 12/58 dead transitions. [2023-11-17 15:19:03,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 58 transitions, 430 flow [2023-11-17 15:19:03,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:19:03,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:19:03,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 500 transitions. [2023-11-17 15:19:03,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5617977528089888 [2023-11-17 15:19:03,931 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 500 transitions. [2023-11-17 15:19:03,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 500 transitions. [2023-11-17 15:19:03,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:03,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 500 transitions. [2023-11-17 15:19:03,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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 15:19:03,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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 15:19:03,933 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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 15:19:03,933 INFO L175 Difference]: Start difference. First operand has 47 places, 31 transitions, 205 flow. Second operand 5 states and 500 transitions. [2023-11-17 15:19:03,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 58 transitions, 430 flow [2023-11-17 15:19:03,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 406 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-17 15:19:03,939 INFO L231 Difference]: Finished difference. Result has 48 places, 28 transitions, 182 flow [2023-11-17 15:19:03,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=48, PETRI_TRANSITIONS=28} [2023-11-17 15:19:03,939 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2023-11-17 15:19:03,939 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 28 transitions, 182 flow [2023-11-17 15:19:03,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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 15:19:03,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:03,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:03,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:19:03,940 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 2 more)] === [2023-11-17 15:19:03,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:03,940 INFO L85 PathProgramCache]: Analyzing trace with hash 124380719, now seen corresponding path program 1 times [2023-11-17 15:19:03,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:03,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655278176] [2023-11-17 15:19:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:03,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:04,006 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 15:19:04,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:04,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655278176] [2023-11-17 15:19:04,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655278176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:04,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:04,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:19:04,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878362440] [2023-11-17 15:19:04,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:04,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:19:04,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:04,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:19:04,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:19:04,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 178 [2023-11-17 15:19:04,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 28 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 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 15:19:04,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:04,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 178 [2023-11-17 15:19:04,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:04,097 INFO L124 PetriNetUnfolderBase]: 770/1195 cut-off events. [2023-11-17 15:19:04,097 INFO L125 PetriNetUnfolderBase]: For 2062/2062 co-relation queries the response was YES. [2023-11-17 15:19:04,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3732 conditions, 1195 events. 770/1195 cut-off events. For 2062/2062 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4995 event pairs, 134 based on Foata normal form. 36/1231 useless extension candidates. Maximal degree in co-relation 3710. Up to 600 conditions per place. [2023-11-17 15:19:04,102 INFO L140 encePairwiseOnDemand]: 173/178 looper letters, 33 selfloop transitions, 7 changer transitions 1/41 dead transitions. [2023-11-17 15:19:04,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 297 flow [2023-11-17 15:19:04,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:19:04,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:19:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2023-11-17 15:19:04,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5589887640449438 [2023-11-17 15:19:04,103 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2023-11-17 15:19:04,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2023-11-17 15:19:04,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:04,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2023-11-17 15:19:04,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 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 15:19:04,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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 15:19:04,105 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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 15:19:04,105 INFO L175 Difference]: Start difference. First operand has 48 places, 28 transitions, 182 flow. Second operand 4 states and 398 transitions. [2023-11-17 15:19:04,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 297 flow [2023-11-17 15:19:04,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 264 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-11-17 15:19:04,109 INFO L231 Difference]: Finished difference. Result has 45 places, 27 transitions, 161 flow [2023-11-17 15:19:04,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=45, PETRI_TRANSITIONS=27} [2023-11-17 15:19:04,110 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2023-11-17 15:19:04,110 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 27 transitions, 161 flow [2023-11-17 15:19:04,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 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 15:19:04,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:04,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:04,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:19:04,111 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 2 more)] === [2023-11-17 15:19:04,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:04,111 INFO L85 PathProgramCache]: Analyzing trace with hash -529576068, now seen corresponding path program 2 times [2023-11-17 15:19:04,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:04,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853083478] [2023-11-17 15:19:04,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:04,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:04,177 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 15:19:04,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:04,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853083478] [2023-11-17 15:19:04,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853083478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:04,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:04,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:19:04,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123013600] [2023-11-17 15:19:04,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:04,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:19:04,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:04,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:19:04,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:19:04,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 178 [2023-11-17 15:19:04,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 27 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 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 15:19:04,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:04,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 178 [2023-11-17 15:19:04,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:04,274 INFO L124 PetriNetUnfolderBase]: 714/1168 cut-off events. [2023-11-17 15:19:04,275 INFO L125 PetriNetUnfolderBase]: For 1895/1905 co-relation queries the response was YES. [2023-11-17 15:19:04,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3384 conditions, 1168 events. 714/1168 cut-off events. For 1895/1905 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5605 event pairs, 238 based on Foata normal form. 45/1207 useless extension candidates. Maximal degree in co-relation 3365. Up to 801 conditions per place. [2023-11-17 15:19:04,278 INFO L140 encePairwiseOnDemand]: 171/178 looper letters, 38 selfloop transitions, 5 changer transitions 32/77 dead transitions. [2023-11-17 15:19:04,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 77 transitions, 595 flow [2023-11-17 15:19:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:19:04,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:19:04,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 508 transitions. [2023-11-17 15:19:04,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5707865168539326 [2023-11-17 15:19:04,280 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 508 transitions. [2023-11-17 15:19:04,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 508 transitions. [2023-11-17 15:19:04,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:04,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 508 transitions. [2023-11-17 15:19:04,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 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 15:19:04,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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 15:19:04,283 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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 15:19:04,283 INFO L175 Difference]: Start difference. First operand has 45 places, 27 transitions, 161 flow. Second operand 5 states and 508 transitions. [2023-11-17 15:19:04,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 77 transitions, 595 flow [2023-11-17 15:19:04,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 77 transitions, 509 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-17 15:19:04,285 INFO L231 Difference]: Finished difference. Result has 48 places, 31 transitions, 177 flow [2023-11-17 15:19:04,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=48, PETRI_TRANSITIONS=31} [2023-11-17 15:19:04,286 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2023-11-17 15:19:04,286 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 31 transitions, 177 flow [2023-11-17 15:19:04,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 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 15:19:04,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:04,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:04,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:19:04,286 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 2 more)] === [2023-11-17 15:19:04,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:04,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1548919536, now seen corresponding path program 1 times [2023-11-17 15:19:04,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:04,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412475090] [2023-11-17 15:19:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:04,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:04,345 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 15:19:04,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:04,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412475090] [2023-11-17 15:19:04,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412475090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:04,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:04,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:19:04,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42925252] [2023-11-17 15:19:04,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:04,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:19:04,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:04,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:19:04,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:19:04,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 178 [2023-11-17 15:19:04,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 31 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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 15:19:04,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:04,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 178 [2023-11-17 15:19:04,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:04,445 INFO L124 PetriNetUnfolderBase]: 516/880 cut-off events. [2023-11-17 15:19:04,445 INFO L125 PetriNetUnfolderBase]: For 1817/1846 co-relation queries the response was YES. [2023-11-17 15:19:04,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3470 conditions, 880 events. 516/880 cut-off events. For 1817/1846 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4204 event pairs, 54 based on Foata normal form. 45/919 useless extension candidates. Maximal degree in co-relation 3450. Up to 567 conditions per place. [2023-11-17 15:19:04,448 INFO L140 encePairwiseOnDemand]: 171/178 looper letters, 47 selfloop transitions, 9 changer transitions 30/88 dead transitions. [2023-11-17 15:19:04,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 88 transitions, 655 flow [2023-11-17 15:19:04,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:19:04,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:19:04,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 610 transitions. [2023-11-17 15:19:04,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5711610486891385 [2023-11-17 15:19:04,450 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 610 transitions. [2023-11-17 15:19:04,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 610 transitions. [2023-11-17 15:19:04,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:04,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 610 transitions. [2023-11-17 15:19:04,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 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 15:19:04,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 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 15:19:04,453 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 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 15:19:04,453 INFO L175 Difference]: Start difference. First operand has 48 places, 31 transitions, 177 flow. Second operand 6 states and 610 transitions. [2023-11-17 15:19:04,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 88 transitions, 655 flow [2023-11-17 15:19:04,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 88 transitions, 638 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-17 15:19:04,456 INFO L231 Difference]: Finished difference. Result has 51 places, 35 transitions, 236 flow [2023-11-17 15:19:04,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=51, PETRI_TRANSITIONS=35} [2023-11-17 15:19:04,457 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2023-11-17 15:19:04,457 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 35 transitions, 236 flow [2023-11-17 15:19:04,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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 15:19:04,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:04,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:04,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:19:04,457 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 15:19:04,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:04,458 INFO L85 PathProgramCache]: Analyzing trace with hash -771874061, now seen corresponding path program 1 times [2023-11-17 15:19:04,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:04,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140784101] [2023-11-17 15:19:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:04,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:04,525 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 15:19:04,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:04,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140784101] [2023-11-17 15:19:04,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140784101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:04,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:04,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:19:04,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511483436] [2023-11-17 15:19:04,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:04,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:19:04,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:04,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:19:04,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:19:04,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 178 [2023-11-17 15:19:04,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 35 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 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 15:19:04,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:04,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 178 [2023-11-17 15:19:04,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:04,644 INFO L124 PetriNetUnfolderBase]: 329/587 cut-off events. [2023-11-17 15:19:04,644 INFO L125 PetriNetUnfolderBase]: For 1520/1570 co-relation queries the response was YES. [2023-11-17 15:19:04,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2830 conditions, 587 events. 329/587 cut-off events. For 1520/1570 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2618 event pairs, 18 based on Foata normal form. 39/620 useless extension candidates. Maximal degree in co-relation 2808. Up to 367 conditions per place. [2023-11-17 15:19:04,647 INFO L140 encePairwiseOnDemand]: 171/178 looper letters, 52 selfloop transitions, 13 changer transitions 26/93 dead transitions. [2023-11-17 15:19:04,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 93 transitions, 771 flow [2023-11-17 15:19:04,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:19:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:19:04,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 710 transitions. [2023-11-17 15:19:04,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698234349919743 [2023-11-17 15:19:04,649 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 710 transitions. [2023-11-17 15:19:04,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 710 transitions. [2023-11-17 15:19:04,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:04,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 710 transitions. [2023-11-17 15:19:04,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.42857142857143) internal successors, (710), 7 states have internal predecessors, (710), 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 15:19:04,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 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 15:19:04,652 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 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 15:19:04,653 INFO L175 Difference]: Start difference. First operand has 51 places, 35 transitions, 236 flow. Second operand 7 states and 710 transitions. [2023-11-17 15:19:04,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 93 transitions, 771 flow [2023-11-17 15:19:04,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 93 transitions, 709 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-11-17 15:19:04,658 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 280 flow [2023-11-17 15:19:04,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=280, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2023-11-17 15:19:04,659 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2023-11-17 15:19:04,659 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 280 flow [2023-11-17 15:19:04,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 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 15:19:04,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:04,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:04,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 15:19:04,660 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 15:19:04,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:04,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1520544210, now seen corresponding path program 1 times [2023-11-17 15:19:04,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:04,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163011725] [2023-11-17 15:19:04,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:04,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:04,735 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 15:19:04,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:04,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163011725] [2023-11-17 15:19:04,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163011725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:04,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:04,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:19:04,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860420010] [2023-11-17 15:19:04,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:04,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:19:04,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:04,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:19:04,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:19:04,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 178 [2023-11-17 15:19:04,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 280 flow. Second operand has 5 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:19:04,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:04,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 178 [2023-11-17 15:19:04,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:04,808 INFO L124 PetriNetUnfolderBase]: 283/506 cut-off events. [2023-11-17 15:19:04,809 INFO L125 PetriNetUnfolderBase]: For 1629/1629 co-relation queries the response was YES. [2023-11-17 15:19:04,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2390 conditions, 506 events. 283/506 cut-off events. For 1629/1629 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1960 event pairs, 32 based on Foata normal form. 6/512 useless extension candidates. Maximal degree in co-relation 2367. Up to 227 conditions per place. [2023-11-17 15:19:04,810 INFO L140 encePairwiseOnDemand]: 172/178 looper letters, 41 selfloop transitions, 6 changer transitions 45/92 dead transitions. [2023-11-17 15:19:04,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 92 transitions, 907 flow [2023-11-17 15:19:04,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:19:04,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:19:04,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 590 transitions. [2023-11-17 15:19:04,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552434456928839 [2023-11-17 15:19:04,812 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 590 transitions. [2023-11-17 15:19:04,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 590 transitions. [2023-11-17 15:19:04,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:04,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 590 transitions. [2023-11-17 15:19:04,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.33333333333333) internal successors, (590), 6 states have internal predecessors, (590), 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 15:19:04,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 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 15:19:04,815 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 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 15:19:04,815 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 280 flow. Second operand 6 states and 590 transitions. [2023-11-17 15:19:04,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 92 transitions, 907 flow [2023-11-17 15:19:04,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 92 transitions, 725 flow, removed 59 selfloop flow, removed 5 redundant places. [2023-11-17 15:19:04,820 INFO L231 Difference]: Finished difference. Result has 53 places, 36 transitions, 228 flow [2023-11-17 15:19:04,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=53, PETRI_TRANSITIONS=36} [2023-11-17 15:19:04,820 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2023-11-17 15:19:04,820 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 36 transitions, 228 flow [2023-11-17 15:19:04,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:19:04,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:04,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:04,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 15:19:04,821 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 15:19:04,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:04,821 INFO L85 PathProgramCache]: Analyzing trace with hash 975659098, now seen corresponding path program 2 times [2023-11-17 15:19:04,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:04,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655337690] [2023-11-17 15:19:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:04,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:19:04,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:04,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655337690] [2023-11-17 15:19:04,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655337690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:04,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:04,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:19:04,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99216712] [2023-11-17 15:19:04,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:04,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:19:04,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:04,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:19:04,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:19:04,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 178 [2023-11-17 15:19:04,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 36 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 93.42857142857143) internal successors, (654), 7 states have internal predecessors, (654), 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 15:19:04,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:04,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 178 [2023-11-17 15:19:04,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:04,968 INFO L124 PetriNetUnfolderBase]: 146/281 cut-off events. [2023-11-17 15:19:04,968 INFO L125 PetriNetUnfolderBase]: For 577/618 co-relation queries the response was YES. [2023-11-17 15:19:04,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 281 events. 146/281 cut-off events. For 577/618 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1043 event pairs, 9 based on Foata normal form. 25/302 useless extension candidates. Maximal degree in co-relation 1113. Up to 93 conditions per place. [2023-11-17 15:19:04,969 INFO L140 encePairwiseOnDemand]: 171/178 looper letters, 29 selfloop transitions, 17 changer transitions 19/66 dead transitions. [2023-11-17 15:19:04,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 530 flow [2023-11-17 15:19:04,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:19:04,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:19:04,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 788 transitions. [2023-11-17 15:19:04,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5533707865168539 [2023-11-17 15:19:04,971 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 788 transitions. [2023-11-17 15:19:04,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 788 transitions. [2023-11-17 15:19:04,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:04,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 788 transitions. [2023-11-17 15:19:04,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 98.5) internal successors, (788), 8 states have internal predecessors, (788), 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 15:19:04,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 178.0) internal successors, (1602), 9 states have internal predecessors, (1602), 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 15:19:04,974 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 178.0) internal successors, (1602), 9 states have internal predecessors, (1602), 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 15:19:04,974 INFO L175 Difference]: Start difference. First operand has 53 places, 36 transitions, 228 flow. Second operand 8 states and 788 transitions. [2023-11-17 15:19:04,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 530 flow [2023-11-17 15:19:04,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 66 transitions, 480 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-17 15:19:04,977 INFO L231 Difference]: Finished difference. Result has 55 places, 32 transitions, 222 flow [2023-11-17 15:19:04,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=222, PETRI_PLACES=55, PETRI_TRANSITIONS=32} [2023-11-17 15:19:04,977 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2023-11-17 15:19:04,978 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 32 transitions, 222 flow [2023-11-17 15:19:04,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 93.42857142857143) internal successors, (654), 7 states have internal predecessors, (654), 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 15:19:04,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:04,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:04,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 15:19:04,978 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 15:19:04,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:04,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1693333906, now seen corresponding path program 1 times [2023-11-17 15:19:04,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:04,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787716376] [2023-11-17 15:19:04,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:04,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:19:05,042 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 15:19:05,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:19:05,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787716376] [2023-11-17 15:19:05,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787716376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:19:05,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:19:05,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:19:05,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333215845] [2023-11-17 15:19:05,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:19:05,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:19:05,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:19:05,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:19:05,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:19:05,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 178 [2023-11-17 15:19:05,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 32 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 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 15:19:05,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:19:05,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 178 [2023-11-17 15:19:05,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:19:05,083 INFO L124 PetriNetUnfolderBase]: 66/135 cut-off events. [2023-11-17 15:19:05,084 INFO L125 PetriNetUnfolderBase]: For 329/329 co-relation queries the response was YES. [2023-11-17 15:19:05,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 135 events. 66/135 cut-off events. For 329/329 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 328 event pairs, 13 based on Foata normal form. 1/136 useless extension candidates. Maximal degree in co-relation 569. Up to 80 conditions per place. [2023-11-17 15:19:05,084 INFO L140 encePairwiseOnDemand]: 175/178 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2023-11-17 15:19:05,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 375 flow [2023-11-17 15:19:05,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:19:05,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:19:05,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2023-11-17 15:19:05,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5646067415730337 [2023-11-17 15:19:05,085 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 402 transitions. [2023-11-17 15:19:05,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 402 transitions. [2023-11-17 15:19:05,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:19:05,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 402 transitions. [2023-11-17 15:19:05,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 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 15:19:05,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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 15:19:05,087 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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 15:19:05,087 INFO L175 Difference]: Start difference. First operand has 55 places, 32 transitions, 222 flow. Second operand 4 states and 402 transitions. [2023-11-17 15:19:05,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 375 flow [2023-11-17 15:19:05,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 298 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-11-17 15:19:05,089 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2023-11-17 15:19:05,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2023-11-17 15:19:05,089 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2023-11-17 15:19:05,089 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2023-11-17 15:19:05,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 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 15:19:05,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-17 15:19:05,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-11-17 15:19:05,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-17 15:19:05,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-17 15:19:05,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-17 15:19:05,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 15:19:05,092 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:05,094 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:19:05,094 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:19:05,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:19:05 BasicIcfg [2023-11-17 15:19:05,096 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:19:05,096 INFO L158 Benchmark]: Toolchain (without parser) took 6160.83ms. Allocated memory was 234.9MB in the beginning and 339.7MB in the end (delta: 104.9MB). Free memory was 188.1MB in the beginning and 295.3MB in the end (delta: -107.1MB). Peak memory consumption was 193.9MB. Max. memory is 8.0GB. [2023-11-17 15:19:05,096 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 195.0MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:19:05,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.77ms. Allocated memory is still 234.9MB. Free memory was 188.1MB in the beginning and 167.6MB in the end (delta: 20.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 15:19:05,096 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.60ms. Allocated memory is still 234.9MB. Free memory was 167.6MB in the beginning and 165.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:19:05,097 INFO L158 Benchmark]: Boogie Preprocessor took 25.76ms. Allocated memory is still 234.9MB. Free memory was 165.6MB in the beginning and 164.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:19:05,097 INFO L158 Benchmark]: RCFGBuilder took 351.48ms. Allocated memory is still 234.9MB. Free memory was 164.0MB in the beginning and 149.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-11-17 15:19:05,097 INFO L158 Benchmark]: TraceAbstraction took 5476.07ms. Allocated memory was 234.9MB in the beginning and 339.7MB in the end (delta: 104.9MB). Free memory was 148.8MB in the beginning and 295.3MB in the end (delta: -146.4MB). Peak memory consumption was 155.1MB. Max. memory is 8.0GB. [2023-11-17 15:19:05,098 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 195.0MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 257.77ms. Allocated memory is still 234.9MB. Free memory was 188.1MB in the beginning and 167.6MB in the end (delta: 20.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.60ms. Allocated memory is still 234.9MB. Free memory was 167.6MB in the beginning and 165.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.76ms. Allocated memory is still 234.9MB. Free memory was 165.6MB in the beginning and 164.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 351.48ms. Allocated memory is still 234.9MB. Free memory was 164.0MB in the beginning and 149.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 5476.07ms. Allocated memory was 234.9MB in the beginning and 339.7MB in the end (delta: 104.9MB). Free memory was 148.8MB in the beginning and 295.3MB in the end (delta: -146.4MB). Peak memory consumption was 155.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 98 PlacesBefore, 33 PlacesAfterwards, 86 TransitionsBefore, 21 TransitionsAfterwards, 2002 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 71 TotalNumberOfCompositions, 3004 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1852, independent: 1763, independent conditional: 0, independent unconditional: 1763, dependent: 89, dependent conditional: 0, dependent unconditional: 89, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1357, independent: 1319, independent conditional: 0, independent unconditional: 1319, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1357, independent: 1300, independent conditional: 0, independent unconditional: 1300, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 57, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 125, independent: 37, independent conditional: 0, independent unconditional: 37, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1852, independent: 444, independent conditional: 0, independent unconditional: 444, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 1357, unknown conditional: 0, unknown unconditional: 1357] , Statistics on independence cache: Total cache size (in pairs): 74, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, 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 9 procedures, 140 locations, 5 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: 5.4s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 305 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 305 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 855 IncrementalHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 7 mSDtfsCounter, 855 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=280occurred in iteration=10, InterpolantAutomatonStates: 64, 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, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 737 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 15:19:05,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...