/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:28:02,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:28:02,235 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:28:02,269 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:28:02,270 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:28:02,270 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:28:02,271 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:28:02,271 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:28:02,272 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:28:02,272 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:28:02,272 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:28:02,273 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:28:02,273 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:28:02,273 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:28:02,273 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:28:02,274 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:28:02,274 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:28:02,274 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:28:02,275 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:28:02,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:28:02,275 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:28:02,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:28:02,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:28:02,279 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:28:02,279 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:28:02,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:28:02,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:28:02,280 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:28:02,280 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:28:02,280 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:28:02,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:28:02,280 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:28:02,281 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:28:02,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:28:02,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:28:02,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:28:02,538 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:28:02,538 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:28:02,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 11:28:03,717 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:28:03,950 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:28:03,951 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 11:28:03,965 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfc5f4ce8/b8c5aa70c85f4ed89320428450d32b3a/FLAGdcde0c42e [2023-11-17 11:28:03,977 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfc5f4ce8/b8c5aa70c85f4ed89320428450d32b3a [2023-11-17 11:28:03,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:28:03,980 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:28:03,981 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:28:03,981 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:28:03,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:28:03,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:28:03" (1/1) ... [2023-11-17 11:28:03,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d631880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:03, skipping insertion in model container [2023-11-17 11:28:03,988 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:28:03" (1/1) ... [2023-11-17 11:28:04,046 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:28:04,215 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/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-17 11:28:04,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:28:04,398 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:28:04,411 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/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-17 11:28:04,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:28:04,485 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:28:04,486 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:28:04,492 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:28:04,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:04 WrapperNode [2023-11-17 11:28:04,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:28:04,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:28:04,494 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:28:04,494 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:28:04,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:04" (1/1) ... [2023-11-17 11:28:04,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:04" (1/1) ... [2023-11-17 11:28:04,564 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-17 11:28:04,564 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:28:04,565 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:28:04,565 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:28:04,565 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:28:04,571 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:04" (1/1) ... [2023-11-17 11:28:04,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:04" (1/1) ... [2023-11-17 11:28:04,588 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:04" (1/1) ... [2023-11-17 11:28:04,589 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:04" (1/1) ... [2023-11-17 11:28:04,593 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:04" (1/1) ... [2023-11-17 11:28:04,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:04" (1/1) ... [2023-11-17 11:28:04,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:04" (1/1) ... [2023-11-17 11:28:04,596 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:04" (1/1) ... [2023-11-17 11:28:04,598 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:28:04,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:28:04,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:28:04,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:28:04,611 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:04" (1/1) ... [2023-11-17 11:28:04,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:28:04,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:28:04,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 11:28:04,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 11:28:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:28:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:28:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:28:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:28:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:28:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 11:28:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 11:28:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 11:28:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 11:28:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 11:28:04,702 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 11:28:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:28:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:28:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:28:04,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:28:04,703 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:28:04,820 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:28:04,822 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:28:04,961 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:28:05,071 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:28:05,071 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:28:05,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:28:05 BoogieIcfgContainer [2023-11-17 11:28:05,073 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:28:05,075 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:28:05,075 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:28:05,078 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:28:05,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:28:03" (1/3) ... [2023-11-17 11:28:05,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7a3a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:28:05, skipping insertion in model container [2023-11-17 11:28:05,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:04" (2/3) ... [2023-11-17 11:28:05,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7a3a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:28:05, skipping insertion in model container [2023-11-17 11:28:05,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:28:05" (3/3) ... [2023-11-17 11:28:05,080 INFO L112 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 11:28:05,101 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:28:05,101 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:28:05,101 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:28:05,163 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:28:05,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2023-11-17 11:28:05,242 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2023-11-17 11:28:05,242 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:28:05,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-17 11:28:05,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2023-11-17 11:28:05,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2023-11-17 11:28:05,259 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:28:05,271 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 32 transitions, 73 flow [2023-11-17 11:28:05,273 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 32 transitions, 73 flow [2023-11-17 11:28:05,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 32 transitions, 73 flow [2023-11-17 11:28:05,284 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2023-11-17 11:28:05,285 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:28:05,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 32 events. 0/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-17 11:28:05,286 INFO L119 LiptonReduction]: Number of co-enabled transitions 576 [2023-11-17 11:28:05,775 INFO L134 LiptonReduction]: Checked pairs total: 936 [2023-11-17 11:28:05,776 INFO L136 LiptonReduction]: Total number of compositions: 15 [2023-11-17 11:28:05,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:28:05,810 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;@3aac459b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:28:05,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 11:28:05,818 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:28:05,821 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-17 11:28:05,821 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:28:05,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:05,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:05,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:28:05,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:05,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1489345267, now seen corresponding path program 1 times [2023-11-17 11:28:05,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:05,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788585855] [2023-11-17 11:28:05,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:05,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:06,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:28:06,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:06,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788585855] [2023-11-17 11:28:06,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788585855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:06,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:06,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:28:06,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755724253] [2023-11-17 11:28:06,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:06,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:28:06,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:06,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:28:06,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:28:06,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2023-11-17 11:28:06,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:06,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:06,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2023-11-17 11:28:06,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:06,579 INFO L124 PetriNetUnfolderBase]: 576/924 cut-off events. [2023-11-17 11:28:06,579 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-17 11:28:06,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1907 conditions, 924 events. 576/924 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4028 event pairs, 212 based on Foata normal form. 41/965 useless extension candidates. Maximal degree in co-relation 1896. Up to 581 conditions per place. [2023-11-17 11:28:06,593 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 25 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-11-17 11:28:06,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-11-17 11:28:06,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:28:06,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:28:06,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2023-11-17 11:28:06,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408805031446541 [2023-11-17 11:28:06,607 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 86 transitions. [2023-11-17 11:28:06,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 86 transitions. [2023-11-17 11:28:06,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:06,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 86 transitions. [2023-11-17 11:28:06,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:06,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:06,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:06,622 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 86 transitions. [2023-11-17 11:28:06,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-11-17 11:28:06,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:28:06,626 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-11-17 11:28:06,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-11-17 11:28:06,632 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-17 11:28:06,632 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-11-17 11:28:06,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:06,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:06,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:06,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:28:06,633 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:28:06,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:06,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1074937021, now seen corresponding path program 1 times [2023-11-17 11:28:06,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:06,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358882755] [2023-11-17 11:28:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:06,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:28:06,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:06,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358882755] [2023-11-17 11:28:06,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358882755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:06,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:06,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:28:06,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723541073] [2023-11-17 11:28:06,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:06,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:06,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:06,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:06,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:06,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2023-11-17 11:28:06,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:06,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:06,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2023-11-17 11:28:06,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:06,995 INFO L124 PetriNetUnfolderBase]: 513/830 cut-off events. [2023-11-17 11:28:06,995 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2023-11-17 11:28:06,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2222 conditions, 830 events. 513/830 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3403 event pairs, 91 based on Foata normal form. 14/844 useless extension candidates. Maximal degree in co-relation 2210. Up to 419 conditions per place. [2023-11-17 11:28:07,001 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2023-11-17 11:28:07,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 238 flow [2023-11-17 11:28:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:28:07,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:28:07,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2023-11-17 11:28:07,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188679245283019 [2023-11-17 11:28:07,007 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 110 transitions. [2023-11-17 11:28:07,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 110 transitions. [2023-11-17 11:28:07,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:07,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 110 transitions. [2023-11-17 11:28:07,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,012 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,012 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 110 transitions. [2023-11-17 11:28:07,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 238 flow [2023-11-17 11:28:07,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 42 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:28:07,018 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 138 flow [2023-11-17 11:28:07,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-17 11:28:07,019 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-11-17 11:28:07,020 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 138 flow [2023-11-17 11:28:07,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:07,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:07,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:28:07,022 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:28:07,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:07,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1036660078, now seen corresponding path program 1 times [2023-11-17 11:28:07,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:07,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095112362] [2023-11-17 11:28:07,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:07,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:28:07,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:07,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095112362] [2023-11-17 11:28:07,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095112362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:07,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:07,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:28:07,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118923888] [2023-11-17 11:28:07,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:07,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:07,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:07,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:07,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:07,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2023-11-17 11:28:07,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:07,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2023-11-17 11:28:07,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:07,322 INFO L124 PetriNetUnfolderBase]: 491/796 cut-off events. [2023-11-17 11:28:07,322 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2023-11-17 11:28:07,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2335 conditions, 796 events. 491/796 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3297 event pairs, 114 based on Foata normal form. 8/804 useless extension candidates. Maximal degree in co-relation 2320. Up to 455 conditions per place. [2023-11-17 11:28:07,330 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 40 selfloop transitions, 11 changer transitions 0/51 dead transitions. [2023-11-17 11:28:07,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 51 transitions, 340 flow [2023-11-17 11:28:07,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:28:07,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:28:07,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2023-11-17 11:28:07,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2023-11-17 11:28:07,334 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 112 transitions. [2023-11-17 11:28:07,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 112 transitions. [2023-11-17 11:28:07,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:07,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 112 transitions. [2023-11-17 11:28:07,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,337 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,337 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 138 flow. Second operand 4 states and 112 transitions. [2023-11-17 11:28:07,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 51 transitions, 340 flow [2023-11-17 11:28:07,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:28:07,342 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 238 flow [2023-11-17 11:28:07,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-11-17 11:28:07,344 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-11-17 11:28:07,344 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 238 flow [2023-11-17 11:28:07,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:07,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:07,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:28:07,345 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:28:07,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:07,346 INFO L85 PathProgramCache]: Analyzing trace with hash -2071686654, now seen corresponding path program 1 times [2023-11-17 11:28:07,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:07,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115414397] [2023-11-17 11:28:07,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:07,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:28:07,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:07,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115414397] [2023-11-17 11:28:07,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115414397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:07,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:07,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:28:07,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905800099] [2023-11-17 11:28:07,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:07,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:28:07,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:07,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:28:07,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:28:07,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2023-11-17 11:28:07,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:07,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2023-11-17 11:28:07,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:07,634 INFO L124 PetriNetUnfolderBase]: 607/996 cut-off events. [2023-11-17 11:28:07,634 INFO L125 PetriNetUnfolderBase]: For 1782/1782 co-relation queries the response was YES. [2023-11-17 11:28:07,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3242 conditions, 996 events. 607/996 cut-off events. For 1782/1782 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4331 event pairs, 142 based on Foata normal form. 24/1020 useless extension candidates. Maximal degree in co-relation 3222. Up to 382 conditions per place. [2023-11-17 11:28:07,641 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 33 selfloop transitions, 10 changer transitions 13/56 dead transitions. [2023-11-17 11:28:07,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 56 transitions, 432 flow [2023-11-17 11:28:07,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:28:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:28:07,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2023-11-17 11:28:07,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2023-11-17 11:28:07,643 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 135 transitions. [2023-11-17 11:28:07,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 135 transitions. [2023-11-17 11:28:07,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:07,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 135 transitions. [2023-11-17 11:28:07,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,645 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,645 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 238 flow. Second operand 5 states and 135 transitions. [2023-11-17 11:28:07,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 56 transitions, 432 flow [2023-11-17 11:28:07,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 56 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:28:07,651 INFO L231 Difference]: Finished difference. Result has 42 places, 28 transitions, 211 flow [2023-11-17 11:28:07,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=211, PETRI_PLACES=42, PETRI_TRANSITIONS=28} [2023-11-17 11:28:07,652 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-11-17 11:28:07,652 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 28 transitions, 211 flow [2023-11-17 11:28:07,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:07,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:07,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:28:07,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:28:07,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:07,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1854682128, now seen corresponding path program 1 times [2023-11-17 11:28:07,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:07,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040562258] [2023-11-17 11:28:07,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:07,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:07,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:28:07,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:07,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040562258] [2023-11-17 11:28:07,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040562258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:07,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:07,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:28:07,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462691611] [2023-11-17 11:28:07,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:07,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:28:07,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:07,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:28:07,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:28:07,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2023-11-17 11:28:07,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 28 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:07,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2023-11-17 11:28:07,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:07,840 INFO L124 PetriNetUnfolderBase]: 292/501 cut-off events. [2023-11-17 11:28:07,840 INFO L125 PetriNetUnfolderBase]: For 1536/1536 co-relation queries the response was YES. [2023-11-17 11:28:07,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1728 conditions, 501 events. 292/501 cut-off events. For 1536/1536 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1989 event pairs, 80 based on Foata normal form. 36/537 useless extension candidates. Maximal degree in co-relation 1706. Up to 212 conditions per place. [2023-11-17 11:28:07,843 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 20 selfloop transitions, 4 changer transitions 22/46 dead transitions. [2023-11-17 11:28:07,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 395 flow [2023-11-17 11:28:07,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:28:07,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:28:07,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2023-11-17 11:28:07,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45660377358490567 [2023-11-17 11:28:07,844 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 121 transitions. [2023-11-17 11:28:07,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 121 transitions. [2023-11-17 11:28:07,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:07,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 121 transitions. [2023-11-17 11:28:07,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,846 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,846 INFO L175 Difference]: Start difference. First operand has 42 places, 28 transitions, 211 flow. Second operand 5 states and 121 transitions. [2023-11-17 11:28:07,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 395 flow [2023-11-17 11:28:07,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 350 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-17 11:28:07,850 INFO L231 Difference]: Finished difference. Result has 42 places, 17 transitions, 97 flow [2023-11-17 11:28:07,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=42, PETRI_TRANSITIONS=17} [2023-11-17 11:28:07,851 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-11-17 11:28:07,851 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 17 transitions, 97 flow [2023-11-17 11:28:07,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:28:07,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:28:07,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:28:07,852 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:28:07,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:28:07,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1969486334, now seen corresponding path program 1 times [2023-11-17 11:28:07,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:28:07,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050901301] [2023-11-17 11:28:07,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:28:07,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:28:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:28:07,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:28:07,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:28:07,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050901301] [2023-11-17 11:28:07,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050901301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:28:07,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:28:07,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:28:07,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76473982] [2023-11-17 11:28:07,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:28:07,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:28:07,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:28:07,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:28:07,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:28:07,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2023-11-17 11:28:07,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 17 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:28:07,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2023-11-17 11:28:07,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:28:07,967 INFO L124 PetriNetUnfolderBase]: 51/100 cut-off events. [2023-11-17 11:28:07,967 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-11-17 11:28:07,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 100 events. 51/100 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 212 event pairs, 31 based on Foata normal form. 4/104 useless extension candidates. Maximal degree in co-relation 304. Up to 90 conditions per place. [2023-11-17 11:28:07,968 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2023-11-17 11:28:07,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 17 transitions, 121 flow [2023-11-17 11:28:07,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:28:07,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:28:07,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2023-11-17 11:28:07,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44339622641509435 [2023-11-17 11:28:07,969 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 94 transitions. [2023-11-17 11:28:07,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 94 transitions. [2023-11-17 11:28:07,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:28:07,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 94 transitions. [2023-11-17 11:28:07,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,970 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,970 INFO L175 Difference]: Start difference. First operand has 42 places, 17 transitions, 97 flow. Second operand 4 states and 94 transitions. [2023-11-17 11:28:07,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 17 transitions, 121 flow [2023-11-17 11:28:07,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 17 transitions, 77 flow, removed 4 selfloop flow, removed 15 redundant places. [2023-11-17 11:28:07,972 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-11-17 11:28:07,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-11-17 11:28:07,972 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-11-17 11:28:07,973 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-11-17 11:28:07,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:28:07,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 11:28:07,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 11:28:07,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 11:28:07,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 11:28:07,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:28:07,976 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-17 11:28:07,979 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:28:07,979 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:28:07,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:28:07 BasicIcfg [2023-11-17 11:28:07,982 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:28:07,983 INFO L158 Benchmark]: Toolchain (without parser) took 4002.55ms. Allocated memory was 174.1MB in the beginning and 265.3MB in the end (delta: 91.2MB). Free memory was 113.7MB in the beginning and 82.2MB in the end (delta: 31.5MB). Peak memory consumption was 123.8MB. Max. memory is 8.0GB. [2023-11-17 11:28:07,987 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:28:07,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 511.93ms. Allocated memory is still 174.1MB. Free memory was 113.5MB in the beginning and 93.1MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-17 11:28:07,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.27ms. Allocated memory is still 174.1MB. Free memory was 93.1MB in the beginning and 91.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:28:07,988 INFO L158 Benchmark]: Boogie Preprocessor took 33.81ms. Allocated memory is still 174.1MB. Free memory was 91.0MB in the beginning and 89.6MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:28:07,989 INFO L158 Benchmark]: RCFGBuilder took 463.99ms. Allocated memory was 174.1MB in the beginning and 265.3MB in the end (delta: 91.2MB). Free memory was 89.4MB in the beginning and 212.3MB in the end (delta: -122.9MB). Peak memory consumption was 6.9MB. Max. memory is 8.0GB. [2023-11-17 11:28:07,989 INFO L158 Benchmark]: TraceAbstraction took 2907.43ms. Allocated memory is still 265.3MB. Free memory was 211.2MB in the beginning and 82.2MB in the end (delta: 129.0MB). Peak memory consumption was 129.5MB. Max. memory is 8.0GB. [2023-11-17 11:28:07,990 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 511.93ms. Allocated memory is still 174.1MB. Free memory was 113.5MB in the beginning and 93.1MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 70.27ms. Allocated memory is still 174.1MB. Free memory was 93.1MB in the beginning and 91.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.81ms. Allocated memory is still 174.1MB. Free memory was 91.0MB in the beginning and 89.6MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 463.99ms. Allocated memory was 174.1MB in the beginning and 265.3MB in the end (delta: 91.2MB). Free memory was 89.4MB in the beginning and 212.3MB in the end (delta: -122.9MB). Peak memory consumption was 6.9MB. Max. memory is 8.0GB. * TraceAbstraction took 2907.43ms. Allocated memory is still 265.3MB. Free memory was 211.2MB in the beginning and 82.2MB in the end (delta: 129.0MB). Peak memory consumption was 129.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5s, 42 PlacesBefore, 27 PlacesAfterwards, 32 TransitionsBefore, 17 TransitionsAfterwards, 576 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 15 TotalNumberOfCompositions, 936 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 570, independent: 521, independent conditional: 0, independent unconditional: 521, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 383, independent: 359, independent conditional: 0, independent unconditional: 359, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 383, independent: 347, independent conditional: 0, independent unconditional: 347, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 36, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 104, independent: 40, independent conditional: 0, independent unconditional: 40, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 570, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 383, unknown conditional: 0, unknown unconditional: 383] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 62 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 123 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 123 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 230 IncrementalHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 7 mSDtfsCounter, 230 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=238occurred in iteration=3, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 322 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 11:28:08,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...