/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/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_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 15:17:54,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:17:54,278 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 15:17:54,297 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:17:54,297 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:17:54,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:17:54,298 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:17:54,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:17:54,298 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:17:54,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:17:54,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:17:54,299 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:17:54,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:17:54,300 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:17:54,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:17:54,300 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:17:54,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:17:54,300 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:17:54,301 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:17:54,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:17:54,301 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:17:54,304 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:17:54,304 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:17:54,304 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:17:54,304 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:17:54,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:17:54,305 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:17:54,305 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:17:54,305 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:17:54,305 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:17:54,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:17:54,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:17:54,306 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:17:54,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:17:54,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:17:54,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:17:54,488 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:17:54,488 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:17:54,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 15:17:55,514 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:17:55,726 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:17:55,727 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 15:17:55,736 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edb72fdd0/afe23971984f49f89a31ff9f0fa7d8bf/FLAG767c0577e [2023-11-17 15:17:55,746 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edb72fdd0/afe23971984f49f89a31ff9f0fa7d8bf [2023-11-17 15:17:55,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:17:55,749 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:17:55,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:17:55,750 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:17:55,753 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:17:55,753 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:17:55" (1/1) ... [2023-11-17 15:17:55,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ef8a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:55, skipping insertion in model container [2023-11-17 15:17:55,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:17:55" (1/1) ... [2023-11-17 15:17:55,795 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:17:55,903 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/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] [2023-11-17 15:17:56,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:17:56,039 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:17:56,049 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/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] [2023-11-17 15:17:56,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:17:56,103 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:17:56,103 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:17:56,108 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:17:56,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:56 WrapperNode [2023-11-17 15:17:56,109 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:17:56,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:17:56,110 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:17:56,110 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:17:56,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:56" (1/1) ... [2023-11-17 15:17:56,125 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:56" (1/1) ... [2023-11-17 15:17:56,141 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-11-17 15:17:56,142 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:17:56,142 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:17:56,142 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:17:56,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:17:56,150 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:56" (1/1) ... [2023-11-17 15:17:56,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:56" (1/1) ... [2023-11-17 15:17:56,152 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:56" (1/1) ... [2023-11-17 15:17:56,153 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:56" (1/1) ... [2023-11-17 15:17:56,156 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:56" (1/1) ... [2023-11-17 15:17:56,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:56" (1/1) ... [2023-11-17 15:17:56,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:56" (1/1) ... [2023-11-17 15:17:56,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:56" (1/1) ... [2023-11-17 15:17:56,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:17:56,161 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:17:56,161 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:17:56,161 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:17:56,162 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:56" (1/1) ... [2023-11-17 15:17:56,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:17:56,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:17:56,194 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 15:17:56,210 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 15:17:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:17:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:17:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:17:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:17:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:17:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 15:17:56,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 15:17:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 15:17:56,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 15:17:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 15:17:56,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 15:17:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:17:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:17:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:17:56,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:17:56,218 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 15:17:56,336 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:17:56,338 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:17:56,482 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:17:56,489 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:17:56,489 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:17:56,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:17:56 BoogieIcfgContainer [2023-11-17 15:17:56,490 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:17:56,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:17:56,492 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:17:56,494 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:17:56,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:17:55" (1/3) ... [2023-11-17 15:17:56,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c4a15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:17:56, skipping insertion in model container [2023-11-17 15:17:56,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:56" (2/3) ... [2023-11-17 15:17:56,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c4a15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:17:56, skipping insertion in model container [2023-11-17 15:17:56,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:17:56" (3/3) ... [2023-11-17 15:17:56,495 INFO L112 eAbstractionObserver]: Analyzing ICFG safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 15:17:56,506 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:17:56,506 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:17:56,506 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:17:56,541 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:17:56,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 198 flow [2023-11-17 15:17:56,606 INFO L124 PetriNetUnfolderBase]: 2/90 cut-off events. [2023-11-17 15:17:56,607 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:17:56,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-11-17 15:17:56,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 198 flow [2023-11-17 15:17:56,614 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2023-11-17 15:17:56,616 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:17:56,631 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 75 transitions, 159 flow [2023-11-17 15:17:56,638 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 75 transitions, 159 flow [2023-11-17 15:17:56,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 75 transitions, 159 flow [2023-11-17 15:17:56,659 INFO L124 PetriNetUnfolderBase]: 1/75 cut-off events. [2023-11-17 15:17:56,659 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:17:56,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 1/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-11-17 15:17:56,661 INFO L119 LiptonReduction]: Number of co-enabled transitions 1344 [2023-11-17 15:17:58,402 INFO L134 LiptonReduction]: Checked pairs total: 2077 [2023-11-17 15:17:58,402 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-11-17 15:17:58,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:17:58,423 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;@4686d368, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:17:58,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:17:58,430 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:17:58,431 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-17 15:17:58,431 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:17:58,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:58,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:58,432 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 15:17:58,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:58,435 INFO L85 PathProgramCache]: Analyzing trace with hash -183896116, now seen corresponding path program 1 times [2023-11-17 15:17:58,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:58,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858030019] [2023-11-17 15:17:58,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:58,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:58,791 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 15:17:58,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:58,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858030019] [2023-11-17 15:17:58,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858030019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:58,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:58,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:17:58,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269098611] [2023-11-17 15:17:58,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:58,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:17:58,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:58,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:17:58,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:17:58,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 157 [2023-11-17 15:17:58,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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 15:17:58,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:58,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 157 [2023-11-17 15:17:58,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:58,982 INFO L124 PetriNetUnfolderBase]: 274/438 cut-off events. [2023-11-17 15:17:58,983 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-17 15:17:58,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 438 events. 274/438 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1771 event pairs, 55 based on Foata normal form. 12/449 useless extension candidates. Maximal degree in co-relation 901. Up to 370 conditions per place. [2023-11-17 15:17:58,988 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 22 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-17 15:17:58,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 110 flow [2023-11-17 15:17:58,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:17:58,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:17:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2023-11-17 15:17:59,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5923566878980892 [2023-11-17 15:17:59,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2023-11-17 15:17:59,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2023-11-17 15:17:59,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:59,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2023-11-17 15:17:59,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 15:17:59,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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 15:17:59,019 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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 15:17:59,021 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 279 transitions. [2023-11-17 15:17:59,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 110 flow [2023-11-17 15:17:59,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 106 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:17:59,025 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2023-11-17 15:17:59,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-11-17 15:17:59,032 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-11-17 15:17:59,032 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2023-11-17 15:17:59,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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 15:17:59,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:59,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:59,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:17:59,033 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 15:17:59,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:59,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1405813447, now seen corresponding path program 1 times [2023-11-17 15:17:59,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:59,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425345932] [2023-11-17 15:17:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:59,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:59,198 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 15:17:59,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:59,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425345932] [2023-11-17 15:17:59,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425345932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:59,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:59,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:17:59,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900493457] [2023-11-17 15:17:59,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:59,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:59,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:59,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:59,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:59,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 157 [2023-11-17 15:17:59,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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 15:17:59,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:59,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 157 [2023-11-17 15:17:59,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:59,268 INFO L124 PetriNetUnfolderBase]: 253/408 cut-off events. [2023-11-17 15:17:59,269 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-11-17 15:17:59,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 408 events. 253/408 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1465 event pairs, 79 based on Foata normal form. 9/416 useless extension candidates. Maximal degree in co-relation 928. Up to 292 conditions per place. [2023-11-17 15:17:59,273 INFO L140 encePairwiseOnDemand]: 154/157 looper letters, 20 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2023-11-17 15:17:59,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 23 transitions, 107 flow [2023-11-17 15:17:59,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:17:59,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:17:59,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2023-11-17 15:17:59,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583864118895966 [2023-11-17 15:17:59,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2023-11-17 15:17:59,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2023-11-17 15:17:59,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:59,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2023-11-17 15:17:59,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 15:17:59,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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 15:17:59,279 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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 15:17:59,279 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states and 263 transitions. [2023-11-17 15:17:59,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 23 transitions, 107 flow [2023-11-17 15:17:59,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 101 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:17:59,280 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 52 flow [2023-11-17 15:17:59,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-11-17 15:17:59,281 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-17 15:17:59,282 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 52 flow [2023-11-17 15:17:59,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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 15:17:59,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:59,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:59,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:17:59,283 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 15:17:59,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:59,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1807817629, now seen corresponding path program 1 times [2023-11-17 15:17:59,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:59,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319568852] [2023-11-17 15:17:59,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:59,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:59,385 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 15:17:59,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:59,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319568852] [2023-11-17 15:17:59,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319568852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:59,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:59,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:17:59,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357186952] [2023-11-17 15:17:59,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:59,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:59,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:59,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:59,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:59,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 157 [2023-11-17 15:17:59,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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 15:17:59,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:59,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 157 [2023-11-17 15:17:59,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:59,467 INFO L124 PetriNetUnfolderBase]: 354/586 cut-off events. [2023-11-17 15:17:59,467 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2023-11-17 15:17:59,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 586 events. 354/586 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2726 event pairs, 37 based on Foata normal form. 27/613 useless extension candidates. Maximal degree in co-relation 1330. Up to 245 conditions per place. [2023-11-17 15:17:59,471 INFO L140 encePairwiseOnDemand]: 151/157 looper letters, 35 selfloop transitions, 7 changer transitions 1/44 dead transitions. [2023-11-17 15:17:59,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 44 transitions, 209 flow [2023-11-17 15:17:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:17:59,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:17:59,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 435 transitions. [2023-11-17 15:17:59,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.554140127388535 [2023-11-17 15:17:59,473 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 435 transitions. [2023-11-17 15:17:59,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 435 transitions. [2023-11-17 15:17:59,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:59,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 435 transitions. [2023-11-17 15:17:59,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 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 15:17:59,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 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 15:17:59,476 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 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 15:17:59,476 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 52 flow. Second operand 5 states and 435 transitions. [2023-11-17 15:17:59,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 44 transitions, 209 flow [2023-11-17 15:17:59,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 44 transitions, 201 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:17:59,477 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 97 flow [2023-11-17 15:17:59,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-11-17 15:17:59,478 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-11-17 15:17:59,478 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 97 flow [2023-11-17 15:17:59,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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 15:17:59,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:59,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:59,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:17:59,479 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 15:17:59,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:59,480 INFO L85 PathProgramCache]: Analyzing trace with hash -631222549, now seen corresponding path program 2 times [2023-11-17 15:17:59,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:59,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423916970] [2023-11-17 15:17:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:59,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:59,551 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 15:17:59,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:59,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423916970] [2023-11-17 15:17:59,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423916970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:59,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:59,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:17:59,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807303530] [2023-11-17 15:17:59,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:59,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:59,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:59,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:59,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:59,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 157 [2023-11-17 15:17:59,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 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 15:17:59,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:59,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 157 [2023-11-17 15:17:59,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:59,643 INFO L124 PetriNetUnfolderBase]: 589/962 cut-off events. [2023-11-17 15:17:59,644 INFO L125 PetriNetUnfolderBase]: For 910/910 co-relation queries the response was YES. [2023-11-17 15:17:59,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2633 conditions, 962 events. 589/962 cut-off events. For 910/910 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4510 event pairs, 150 based on Foata normal form. 36/998 useless extension candidates. Maximal degree in co-relation 2618. Up to 352 conditions per place. [2023-11-17 15:17:59,647 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 30 selfloop transitions, 4 changer transitions 13/47 dead transitions. [2023-11-17 15:17:59,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 285 flow [2023-11-17 15:17:59,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:17:59,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:17:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2023-11-17 15:17:59,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5843949044585988 [2023-11-17 15:17:59,649 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2023-11-17 15:17:59,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2023-11-17 15:17:59,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:59,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2023-11-17 15:17:59,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 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 15:17:59,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 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 15:17:59,651 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 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 15:17:59,651 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 97 flow. Second operand 4 states and 367 transitions. [2023-11-17 15:17:59,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 285 flow [2023-11-17 15:17:59,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 47 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:17:59,656 INFO L231 Difference]: Finished difference. Result has 37 places, 19 transitions, 95 flow [2023-11-17 15:17:59,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=37, PETRI_TRANSITIONS=19} [2023-11-17 15:17:59,657 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-11-17 15:17:59,657 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 19 transitions, 95 flow [2023-11-17 15:17:59,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 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 15:17:59,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:59,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:59,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:17:59,658 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 15:17:59,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:59,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1036481212, now seen corresponding path program 1 times [2023-11-17 15:17:59,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:59,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019332245] [2023-11-17 15:17:59,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:59,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:59,758 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 15:17:59,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:59,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019332245] [2023-11-17 15:17:59,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019332245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:59,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:59,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:17:59,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588159743] [2023-11-17 15:17:59,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:59,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:59,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:59,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:59,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:59,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 157 [2023-11-17 15:17:59,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 19 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 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 15:17:59,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:59,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 157 [2023-11-17 15:17:59,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:59,819 INFO L124 PetriNetUnfolderBase]: 221/393 cut-off events. [2023-11-17 15:17:59,820 INFO L125 PetriNetUnfolderBase]: For 759/760 co-relation queries the response was YES. [2023-11-17 15:17:59,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 393 events. 221/393 cut-off events. For 759/760 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1520 event pairs, 97 based on Foata normal form. 18/410 useless extension candidates. Maximal degree in co-relation 1157. Up to 144 conditions per place. [2023-11-17 15:17:59,822 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 16 selfloop transitions, 3 changer transitions 12/32 dead transitions. [2023-11-17 15:17:59,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 211 flow [2023-11-17 15:17:59,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:17:59,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:17:59,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2023-11-17 15:17:59,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5700636942675159 [2023-11-17 15:17:59,823 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 358 transitions. [2023-11-17 15:17:59,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 358 transitions. [2023-11-17 15:17:59,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:59,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 358 transitions. [2023-11-17 15:17:59,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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 15:17:59,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 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 15:17:59,826 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 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 15:17:59,826 INFO L175 Difference]: Start difference. First operand has 37 places, 19 transitions, 95 flow. Second operand 4 states and 358 transitions. [2023-11-17 15:17:59,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 211 flow [2023-11-17 15:17:59,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 189 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-17 15:17:59,829 INFO L231 Difference]: Finished difference. Result has 36 places, 17 transitions, 78 flow [2023-11-17 15:17:59,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=17} [2023-11-17 15:17:59,831 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-11-17 15:17:59,831 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 17 transitions, 78 flow [2023-11-17 15:17:59,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 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 15:17:59,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:59,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:59,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:17:59,832 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 15:17:59,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1385818268, now seen corresponding path program 1 times [2023-11-17 15:17:59,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:59,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160639804] [2023-11-17 15:17:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:59,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:59,920 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 15:17:59,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:59,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160639804] [2023-11-17 15:17:59,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160639804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:59,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:59,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:17:59,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19490699] [2023-11-17 15:17:59,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:59,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:17:59,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:59,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:17:59,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:17:59,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 157 [2023-11-17 15:17:59,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 17 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 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 15:17:59,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:59,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 157 [2023-11-17 15:17:59,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:59,949 INFO L124 PetriNetUnfolderBase]: 47/96 cut-off events. [2023-11-17 15:17:59,949 INFO L125 PetriNetUnfolderBase]: For 191/191 co-relation queries the response was YES. [2023-11-17 15:17:59,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 96 events. 47/96 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 208 event pairs, 23 based on Foata normal form. 12/108 useless extension candidates. Maximal degree in co-relation 240. Up to 52 conditions per place. [2023-11-17 15:17:59,950 INFO L140 encePairwiseOnDemand]: 154/157 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-11-17 15:17:59,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 19 transitions, 108 flow [2023-11-17 15:17:59,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:17:59,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:17:59,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-11-17 15:17:59,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286624203821656 [2023-11-17 15:17:59,951 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-11-17 15:17:59,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-11-17 15:17:59,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:59,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-11-17 15:17:59,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 15:17:59,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 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 15:17:59,953 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 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 15:17:59,953 INFO L175 Difference]: Start difference. First operand has 36 places, 17 transitions, 78 flow. Second operand 4 states and 332 transitions. [2023-11-17 15:17:59,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 19 transitions, 108 flow [2023-11-17 15:17:59,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 80 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-11-17 15:17:59,955 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-11-17 15:17:59,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, 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=26, PETRI_TRANSITIONS=0} [2023-11-17 15:17:59,956 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2023-11-17 15:17:59,957 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-11-17 15:17:59,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 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 15:17:59,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 15:17:59,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 15:17:59,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 15:17:59,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 15:17:59,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:17:59,959 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-11-17 15:17:59,961 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:17:59,961 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:17:59,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:17:59 BasicIcfg [2023-11-17 15:17:59,964 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:17:59,965 INFO L158 Benchmark]: Toolchain (without parser) took 4214.89ms. Allocated memory is still 347.1MB. Free memory was 293.7MB in the beginning and 245.2MB in the end (delta: 48.6MB). Peak memory consumption was 50.0MB. Max. memory is 8.0GB. [2023-11-17 15:17:59,965 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 230.7MB. Free memory is still 181.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:17:59,966 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.33ms. Allocated memory is still 347.1MB. Free memory was 293.5MB in the beginning and 273.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-17 15:17:59,966 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.85ms. Allocated memory is still 347.1MB. Free memory was 273.2MB in the beginning and 271.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:17:59,966 INFO L158 Benchmark]: Boogie Preprocessor took 18.62ms. Allocated memory is still 347.1MB. Free memory was 271.0MB in the beginning and 269.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 15:17:59,966 INFO L158 Benchmark]: RCFGBuilder took 329.33ms. Allocated memory is still 347.1MB. Free memory was 269.7MB in the beginning and 309.4MB in the end (delta: -39.7MB). Peak memory consumption was 15.1MB. Max. memory is 8.0GB. [2023-11-17 15:17:59,966 INFO L158 Benchmark]: TraceAbstraction took 3471.76ms. Allocated memory is still 347.1MB. Free memory was 308.9MB in the beginning and 245.2MB in the end (delta: 63.7MB). Peak memory consumption was 64.3MB. Max. memory is 8.0GB. [2023-11-17 15:17:59,968 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 230.7MB. Free memory is still 181.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 359.33ms. Allocated memory is still 347.1MB. Free memory was 293.5MB in the beginning and 273.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.85ms. Allocated memory is still 347.1MB. Free memory was 273.2MB in the beginning and 271.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.62ms. Allocated memory is still 347.1MB. Free memory was 271.0MB in the beginning and 269.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 329.33ms. Allocated memory is still 347.1MB. Free memory was 269.7MB in the beginning and 309.4MB in the end (delta: -39.7MB). Peak memory consumption was 15.1MB. Max. memory is 8.0GB. * TraceAbstraction took 3471.76ms. Allocated memory is still 347.1MB. Free memory was 308.9MB in the beginning and 245.2MB in the end (delta: 63.7MB). Peak memory consumption was 64.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 84 PlacesBefore, 27 PlacesAfterwards, 75 TransitionsBefore, 18 TransitionsAfterwards, 1344 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 64 TotalNumberOfCompositions, 2077 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1530, independent: 1457, independent conditional: 0, independent unconditional: 1457, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 944, independent: 911, independent conditional: 0, independent unconditional: 911, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 944, independent: 902, independent conditional: 0, independent unconditional: 902, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 42, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 92, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1530, independent: 546, independent conditional: 0, independent unconditional: 546, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 944, unknown conditional: 0, unknown unconditional: 944] , Statistics on independence cache: Total cache size (in pairs): 94, Positive cache size: 82, Positive conditional cache size: 0, Positive unconditional cache size: 82, 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 7 procedures, 119 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 104 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 104 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 209 IncrementalHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 1 mSDtfsCounter, 209 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=97occurred in iteration=3, InterpolantAutomatonStates: 23, 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, 0.7s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 198 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 15:17:59,987 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...